The isotope \left.\begin{array}{r}212 \\ 83\end{array}\right? Bi has a half-life of 1.01 yr. What mass (in mg) of a 2.00-mg sample will remain after 3.75X10³ h?

Answers

Answer 1

Half-life is the length of time it takes for half of the radioactive atoms of a specific radionuclide to decay. A good rule of thumb is that, after seven half-lives, you will have less than one percent of the original amount of radiation.

What do you mean by half-life?

half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive.

What affects the half-life of an isotope?

Since the chemical bonding between atoms involves the deformation of atomic electron wavefunctions, the radioactive half-life of an atom can depend on how it is bonded to other atoms. Simply by changing the neighboring atoms that are bonded to a radioactive isotope, we can change its half-life.

Learn more about half life of an isotope here:

https://brainly.com/question/13979590#SPJ4

Related Questions

what is the name of the high-energy compound that cells use to fuel chemical reactions?

Answers

Adenosine triphosphate, or ATP, is the primary carrier of energy in cells.

Two amino acids combine to form a dipeptide when the amino group of one reacts with the acid group of the other. Which structure is correct

Answers

The correct structure that shows two amino acids combine to form a dipeptide when the amino group of one reacts with the acid group of the other is structure A.

What happens in amino acids combination?

When two amino acids combine to form a dipeptide, a peptide bond is formed between the amino group of one amino acid and the carboxyl group of the other amino acid. This forms a long chain of amino acids, which is the basis for proteins.

The resulting structure can be represented as:

H₂N-CHR-CO-NH-CHR-COOH

Where R represents the side chain of the amino acid.

Find out more on amino acids here: https://brainly.com/question/28362783

#SPJ1

Complete question:

Two amino acids combine to form a dipeptide when the amino group of one reacts with the acid group of the other. Which structure is correct

Two amino acids combine to form a dipeptide when the amino group of one reacts with the acid group of

Can somebody plz help answer all these true and false questions CORRECT!!

WILL MARK BRAINLIEST :D

Can somebody plz help answer all these true and false questions CORRECT!! WILL MARK BRAINLIEST :D

Answers

Answer:

1-T

2-F

3-T

4-T

Explanation:

big brain

Danielle, a student in a science class, has been
asked to design an experiment to examine the
process of thermal equilibrium. She places two
objects that have the same mass but different
initial temperatures in contact with each other.
She records the final temperature in a table after
the heat has been transferred.
Mass Initial. Final
. Temp °C Temp °C
object A : 5g 55°C 40°C
Object B: 5g 25°C 40°C
What was Danielle's conclusion?

A. The two objects of varying temperatures have
thermal equilibrium and heat is maximum.
B. The two objects of varying temperatures have
thermal expansion and entropy is maximum.
C. The two objects of varying temperatures have
thermal expansion and heat is maximum.
D. The two objects of varying temperatures have
thermal equilibrium and entropy is maximum.

Answers

The two objects of varying temperatures have thermal equilibrium and entropy is maximum. Option D

What is thermal equilibrium?

When we talk about the term thermal equilibrium, we are talking about the fact that the two objects would have the same temperature. The two objects that are under consideration are substances that have different temperatures but a point would come that the two objects would now be at the same temperature. This point that the two objects are now at the same temperature is called the point of the thermal equilibrium of the object.

Having said this, we have to look at the table where the initial and the final temperatures of the objects have been shown, we can see that the thermal equilibrium was actually achieved for the objects and this would lead to a maximum value of the entropy.

Learn more about thermal equilibrium:https://brainly.com/question/14556352

#SPJ1

please help with the question tagged below

please help with the question tagged below

Answers

Answer:

It can lose it's electrion

Explanation:


What is the % yield if 20 grams of hydrogen is reacted with 32 grams
of oxygen and produces 9 grams of water?
H2 + O2 -> H2O

Answers

Answer:

12.5%

Explanation:

32/16 = 2 moles of oxygen

2 x 18.01 x 2/1 = 72.04 g of H2O

9/72.04 x 100 = 12.5%

balanced equation: 2H2 + O2 → 2H2O

limiting reactant is oxygen

If 20 g of hydrogen is reacted with 32 g of oxygen to produce 9 g of water, the percentage yield is 5%.

What is Percent yield?

Percent yield is the ratio of the actual yield times the theoretical yield to 100. When the actual and theoretical yield are equal, the percentage yield is 100%. So if the actual yield is less than the theoretical yield then the percentage yield is less than 100%. This situation may arise due to the incompleteness of the reaction or the loss of the sample during the recovery process.

According to the stoichiometry of reaction of formation of water,

4 g hydrogen gives 36 g water, thus, 20 g hydrogen gives 20×36/4=180 g water which is theoretical yield.

So, the percent yield=observed yield/theoretical yield×100

percent yield=9/180×100=5%.

Thus, if 20 g of hydrogen is reacted with 32 g of oxygen to produce 9 g of water, the percentage yield is 5%.

Learn more about Percent yield, here:

https://brainly.com/question/22178760

#SPJ2

how many grams of hno3 are needed to make 1.5m solution of acid in enough water to make 0.152 of solution

Answers

To make a 1.5 M solution of HNO3 with a volume of 0.152 L, you would need approximately 27.36 grams of HNO3.

To determine the grams of HNO3 needed, we can use the equation:

Molarity (M) = moles of solute / volume of solution (L)

Given that the desired molarity is 1.5 M and the volume of the solution is 0.152 L, we can rearrange the equation to solve for moles of HNO3:

moles of HNO3 = Molarity (M) * volume of solution (L)

Substituting the given values, we have:

moles of HNO3 = 1.5 M * 0.152 L = 0.228 moles

Finally, we can calculate the grams of HNO3 using its molar mass (63.01 g/mol):

grams of HNO3 = moles of HNO3 * molar mass of HNO3

grams of HNO3 = 0.228 moles * 63.01 g/mol ≈ 27.36 grams

Therefore, approximately 27.36 grams of HNO3 are needed to make a 1.5 M solution with a volume of 0.152 L.

To learn more about Molarity  click here

brainly.com/question/13386686

#SPJ11

PLZ HELP!!
Why do you think only one material is able to pass through the membrane? *think about what kind of materials can diffuse through the membrane*

Answers

Because the cell membrane (plasmamembrane) is a membrane. Very simply put, you can think of it like a piece of cloth. If you have a piece of cloth, water can move through the small holes, but something large, like e.g. a piece of cheese cannot.

Sana maka tulong

Here is a picture that might help :)

PLZ HELP!!Why do you think only one material is able to pass through the membrane? *think about what

How many molecules of sucrose are
in 205 g C12H22011?
(C12H22O11, 342.34 g/mol)
[?]
[? ]×10¹²] molecules C12H22O11
Coefficient (green) Exponent (yellow)
I
Enter

How many molecules of sucrose arein 205 g C12H22011?(C12H22O11, 342.34 g/mol)[?][? ]10] molecules C12H22O11Coefficient

Answers

To begin with, sucrose is C12H22O11. Additionally, we must determine how many moles of sucrose there are in a pound of sucrose:

The moles of sucrose are 454g, 342.30g, mol1, and 1.33mol.

Is sucrose a good sugar to use?

Brief Summary According to a University of California, Davis study that was published in the Journal of Clinical Endocrinology and Metabolism, sucrose, the more "natural form of sugar," may be just as harmful to your health as HFCS.

Is sugar a healthy food?

Your body only receives sugar when you consume sucrose like soda or candy, and typically too much of it. The threat is present here. You run the risk of major health problems if you consume too much added sugar (fructose or sucrose) in your diet.

To know more about sucrose visit:

https://brainly.com/question/3850162

#SPJ1

Atomic Mass is the ___________ of the mass numbers of all the isotopes of an element.

Answers

Answer:

Number of proton + No of electron

Explanation:

Mark me brainlist

Answer:

No of neutron + no of protons

Explanation:

Since atomic mass is the sum total of the neutron and mass number then we can say that, neutron number plus proton number is the mass number of all isotopes.


2 points
Stu Dent wants to create a salt water solution. He uses 0.614 moles of salt and 182 milliliters of water. What is the molarity of the solution?

Type your answer...

Answers

Answer: The molarity of solution is 3.37 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

\(Molarity=\frac{n\times 1000}{V_s}\)

where,

n = moles of solute = 0.614  

\(V_s\) = volume of solution in ml = 182 ml

Now put all the given values in the formula of molarity, we get

\(Molarity=\frac{0.614\times 1000}{182}=3.37M\)

Therefore, the molarity of solution is 3.37 M

Carbon cycle – What are the main reservoirs
of the carbon cycle? Where do the inorganic and organic carbon
cycles interact? What are the major differences and similarities
between the inorganic and organic carbon?

Answers

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

Learn more about Carbon Cycle

brainly.com/question/13729951

#SPJ11

Methane and water react to form hydrogen and carbon monoxide, like this: CH4(g)+H20(g) → 3 H,(g) + CO(g) The reaction is endothermic. Suppose a mixture of CH4, H20, H2 and CO has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left.

Answers

Answer is given in parts

Given equation: CH4(g)+H20(g) → 3 H2(g) + CO(g)

The given reaction is endothermic. It can be predicted that if there is an increase in temperature, the equilibrium will shift to the right as an endothermic reaction will favor the forward reaction to absorb more heat. If there is a decrease in temperature, the equilibrium will shift to the left.

Perturbations Effect on the composition of mixture Effect on the equilibrium

a. Removal of CH4 Decrease Decrease in CH4 will shift the equilibrium to the right.

b. Addition of CO Increase The addition of CO will shift the equilibrium to the left as the reaction will try to use up the excess CO.

c. Increase in Pressure No effect The increase in pressure will have no effect as the total number of moles of gases is the same on both sides of the equation.

d. Increase in temperature Increase Increase in temperature will shift the equilibrium to the right as it is an endothermic reaction and will favor the forward reaction to absorb more heat.

e. Addition of H2O No effect The addition of H2O will have no effect as there is already H2O present on the reactant side and the product side.

f. Removal of CO Decrease The removal of CO will shift the equilibrium to the right as the reaction will try to replace the lost CO.

learn more about endothermic Reaction here:

https://brainly.com/question/28909381

#SPJ11

How many electrons are there?

How many electrons are there?

Answers

Answer:

36

Explanation:

Se has a negative charge of -2

in order for that to be possible there has to be 2 more negative charges than positive chrages

in other words

34 protons 36 electrons

34+ 36-

briefly explain why the ratio of volume of gas produced to mass of reactants should remain constant.

Answers

The ratio of the volume of gas produced to the mass of reactants should remain constant because of the law of conservation of mass.

This law states that mass cannot be created or destroyed in a chemical reaction. Therefore, the mass of the reactants must equal the mass of the products. Since the volume of gas produced is directly related to the mass of the reactants, the ratio of volume to mass must remain constant in order to adhere to the law of conservation of mass.

In other words, if the mass of the reactants increases, the volume of gas produced must also increase in order to maintain the same ratio. Similarly, if the mass of the reactants decreases, the volume of gas produced must also decrease to maintain the constant ratio.

In summary, the ratio of volume of gas produced to mass of reactants should remain constant because it is a reflection of the law of conservation of mass, which states that mass cannot be created or destroyed in a chemical reaction.

To know more about mass of reactants click here:

https://brainly.com/question/15959704#

#SPJ11

With the knowledge of basic ideas of nuclear power, how it works, affects our environment, should the us government provide more or less funding per year to this technology. Should they invest more in this technology? The same or less? Why?

Answers

Answer:

CLEAN ENERGY SOURCE

Nuclear is the largest source of clean power in the United States. It generates nearly 800 billion kilowatt hours of electricity each year and produces more than half of the nation’s emissions-free electricity. This avoids more than 470 million metric tons of carbon each year, equivalent to removing 100 million cars off the road.

CREATES JOBS

The nuclear industry supports nearly half a million jobs in the United States and contributes an estimated $60 billion annually to the U.S. gross domestic product. U.S. nuclear plants can employ up to 700 workers with salaries that are 30% higher than the local average. They also contribute billions of dollars annually to local economies through federal and state tax revenues.

SUPPORTS NATIONAL SECURITY

A strong civilian nuclear sector is essential to U.S. national security and energy diplomacy. The United States must maintain its global leadership in this arena to influence the peaceful use of nuclear technologies. The U.S. government works with countries in this capacity to build relationships and develop new opportunities for the nation’s nuclear technologies.

Explanation:

For many purposes we can treat propane C3H8 as an ideal gas at temperatures above its boiling point of −42.°C Suppose the temperature of a sample of propane gas is raised from -28.0°C to 9.0°C, and at the same time the pressure is increased by 5.0%

Answers

The percent change in volume is 21 %.

given that :

temperature , T1 = 273 -28 = 245 K

temperature , T2 = 273 + 9 = 282 K

pressure P1 = P

pressure P2 = P - O.O5 P = 0.95 P

Volume V1 = V

volume V2 = ?

using ideal gas equation , we get :

P1 V1 / T1 = P2 V2 / T2

V2 = (P1 V1 T2 ) / P2 T1

V2 = ( P × V × 282 ) / ( 0.95 P × 245 P )

V2 = 1.211 V

change in volume is given as = V2 - V1

                                                 =  1.211 V - V

                                                 = 0.211 V

Percent change in volume is = (0.21 V)) / V ) × 100 %

                                                 = 21 %

Thus, For many purposes we can treat propane C3H8 as an ideal gas at temperatures above its boiling point of −42.°C Suppose the temperature of a sample of propane gas is raised from -28.0°C to 9.0°C, and at the same time the pressure is increased by 5.0% . the percent change in volume in 21 %.

To learn more ideal gas equation here

https://brainly.com/question/28837405

#SPJ1

i have an science question and i don’t know how to do it, Which math function can be used to find the time an object moved if you have the
speed?

Answers

speed = distance / time

v = d / t

If we simplify this and isolate t, then we get t = d / v

Students in a science class prepared flash cards so that they could quiz one another about the
arrangement of the periodic table. One of the flash cards contained information about two
elements, Element L and Element M.

Qualities:
-Atom of element M has two more balances electrons than element atoms of L
- atoms of element L are more reactive than atoms of element M
-both elements are metals

The students had to use the information on n the flash cards to determine possible positions of the two elements on a blank periodic table. Which periodic table has the elements placed in the locations that match the information on the flash cards?

Students in a science class prepared flash cards so that they could quiz one another about thearrangement

Answers

Answer:

the periodic table is G.

The periodic table has the elements placed in the locations that match the information on the flash cards is F.

What is periodic table?

The term "periodic table" refers to an arrangement of all known elements in order of increasing atomic number and recurrent chemical attributes. The periodic table is organized into 118 elements.

The term "periodic table" can also refer to a table that lists all known chemical elements in rows and columns.

In the F table, L is found in alkaline earth metals while M is found in transition metals. M has more valence electrons than L, while L is more reactive than M.

Thus, the  periodic table has the elements placed in the locations that match the information on the flash cards is F.

To learn more about periodic table, refer to the link below:

https://brainly.com/question/11155928

#SPJ5

to which grop and period do the following elements belong carbon,neon,aluminium,potassium ,calcium,sulphur​

Answers

Answer:

C:4A second period Ne:8A second period  Al:3A third period K:1A fourth period Ca:2A fourth S:6A third period

Explanation:

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Therefore, with the help of periodic table we can locate the element's position.

What is periodic table?

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet.

carbon belongs to period 2 and group 14

neon belongs to period 2 and group 18

aluminium belongs to period 3 and group 13

potassium belongs to period 4 and group 1

calcium belongs to period 4 and group 2

sulfur belongs to period 3 and group 16

Therefore, with the help of periodic table we can locate the element's position.

Learn more about periodic table, here:

https://brainly.com/question/11155928

#SPJ2

please help me
16 1 point What is the decay rate of a sample of Oxygen-21 if the sample has 8.31x1017 atoms and a decay constant of 0.203/s? 4.09x1018Bq 1.69x10¹7Bq 0.203Bq 2.44x10-1⁹Bq Previous

Answers

decay rate of approximately 1.69x10^17 Bq (becquerels),

The decay rate of a radioactive sample is determined by the number  of radioactive atoms present and the decay constant, which represents the probability of decay per unit of time.

To calculate the decay rate, we multiply the number of atoms in the sample by the decay constant. In this case, the sample has 8.31x10^17 atoms and a decay constant of 0.203/s. Multiplying these values gives a decay rate of approximately 1.69x10^17 Bq (becquerels), which represents the number of decays per second in the sample.

Learn more about Oxygen here : brainly.com/question/13905823

#SPJ11

What is the theoretical yield (mass of Al2O3 formed) for this reaction?
(answer is not 204)

What is the theoretical yield (mass of Al2O3 formed) for this reaction? (answer is not 204)

Answers

Answer:

102 g Al₂O₃

Explanation:

The theoretical yield is the mass of product calculated via the molar masses and balanced chemical equation.

The limiting reagent is the reactant that is completely reacted before the other reactant(s) are used up. Since Al produces the smaller amount of product, it appears that Al is the limiting reactant. You can only make as much product as the limiting reactant allows. As such, the theoretical yield is 102 grams Al₂O₃.

What is the chemical formula for the molecule in Figure 8.8?

What is the chemical formula for the molecule in Figure 8.8?

Answers

C3H7NO2

its an amino acid

its called

Alanine

Structure of : the carboxylic and amine groups are common to all amino acids. The central carbon atom is the Carbon atom

http://cmt.dur.ac.uk/sjc/thesis_prt/node8.html

https://www.chem.purdue.edu/jmol/molecules/alanin.html

Answer:

NH2C2H4COOH

Explanation:

for crude oil, if 150 pounds of co2 is released per million btus of energy, how much co2 is produced by each barrel of crude oil? (use information from the previous problem)

Answers

The amount of CO2 released by each barrel of crude oil is 150 pounds of CO2 per million BTUs multiplied by 5.8 million BTUs, which equals 870,000 pounds of CO2.

What is barrel?

Barrels are cylindrical containers used for storing and transporting materials such as oil, wine, beer, and other liquids. Barrels are usually made of metal, usually steel, or wood, which is often used for storing alcohol. Barrels come in many different sizes and shapes, with the most common being the 55 gallon drum. Barrels have been used for centuries for storing and transporting goods, and are still used today in many industries. Barrels are often used in wineries and breweries to store and age wine and beer. Barrels are also used to transport oil and other hazardous materials, and even as a form of storage for food and other items.

A barrel of crude oil contains approximately 5.8 million BTUs of energy. Therefore, the amount of CO2 released by each barrel of crude oil is 150 pounds of CO2 per million BTUs multiplied by 5.8 million BTUs, which equals 870,000 pounds of CO2.

To learn more about barrel

https://brainly.com/question/1523811

#SPJ4

Steel is an alloy that is used in making strong roofs because of its enhanced mechanical and chemical properties. Do you consider steel to be more or less malleable than the elements that make it? Explain your answer. Use in your answer the term lattice energy.

Answers

Answer:

Steel is less malleable.

Explanation:

Steel is less malleable than the elements that make it because of the presence of carbon in it. Steel is an alloy of iron and carbon which is harder than iron because of the presence of carbon. Iron in its pure form is softer that able the atoms slip over one another. If carbon is added, they stop the iron atoms from sliding apart so easily. This makes the metal stronger and harder.

You are compiling the temperature profile of a lake, which requires taking temperature readings at different depths. You collect the following data:

What depth range does the epilimnion occupy in this lake?

a. 0 to 3

b. 8 to 12

Answers

The depth range of the epilimnion in this lake is most likely a. 0 to 3 meters. Option A is correct.

To determine the depth range of the epilimnion, we need to identify the layer of the lake where the temperature change is most rapid, which indicates the transition between the warm surface layer and the colder deep layer.

Looking at the temperature readings, we can see that there is a significant temperature difference between the surface layer (0-3 meters) and the layer below (4-7 meters).

However, the temperature change between 4-7 meters and 8-12 meters is not as dramatic, indicating that the transition between the warm surface layer and the colder deep layer occurs somewhere between 3 and 8 meters.

Hence, A. 0 to 3 is the correct option.

To know more about depth range here

https://brainly.com/question/29103133

#SPJ4

what mass of gold is produced when 21.1 a of current are passed through a gold solution for 37.0 min ? express your answer with the appropriate units.

Answers

The mass of gold that is produced when 21.1 a of current are passed through a gold solution for 37.0 min is 31.87 g

Using the formula

m = atomic mass  × It /nF

Where m is the mass

n is the number of equivalents

F is the Faraday constant ( F = 96485 C)

I is the current

and t is the time

From the given information

I = 21.1 A

t = 37.0 min = 37.0 × 60

t = 2220 secs

For gold

Atomic mass = 196.97 g/mol

and n = 3

Putting these parameters into the formula, we get

m = 196.97 gmol⁻¹ × 21.1 A × 2220 sec / 3 × 96485

m= 9226468.74/ 289455

m= 31.87 g

Hence, the mass of gold that is produced is 31,87 g

To know more about mass of gold here

https://brainly.com/question/14312793

#SPJ4

What is the mass number of an atom that contains 80 electrons, 80
protons, and 100 neutrons?

Answers

Answer:

180

Explanation:

proton = 80

electron = 80

neutron = 100

Note:- the atomic number of an element is the number of protons/electrons in the atomic shell

(protons = electrons)

Mass number = number of protons/electrons + number of neutrons

MN= NP+ NN

MN = 80 + 100

MN= 180

I HOPE THIS HELPS

Using your knowledge of the Brønsted-Lowry theory of acids and bases, write equations for the following acid-base reactions
a) HNO3 + OH- 




b) CH3NH2 + H2O 




c) OH- + HPO4-2 





2) The compound NaOH is a base by the two of the theories we discussed in class. However, each of the ttwo theories describes what a base is in different terms. Use your knowledge of these ttwo theories to describe NaOH as an Arrhenius base, a Brønsted-Lowry base,











3) Write an equation for the reaction of potassium metal with hydrochloric acid.






4) Write the names for the following acids and bases:

a) KOH ____________________________________

b) H2¬Se ____________________________________

c) C2H3O2H ____________________________________

d) Fe(OH)2 ____________________________________

e) HCN ____________________________________

Answers

Using Bronsted - Lowry theory of acid and bases reaction :

a) HNO₃   +  OH⁻    -----> NO₃   +  H₂O

b) CH₃NH₂  +   H₂O ------>   CH₃NH₃⁺    +    OH⁻

c) OH⁻  +  HPO₄²⁻  ⇔    PO₄³⁻    +   H₂O

2) NaOH is an Arrhenius base as it dissociates in water to give OH⁻ (hydroxide) and Na⁺ (sodium) ions.

NaOH is Bronsted Lowry base as it accepts H⁺ ion in the given reaction :

HCl + NaOH --->    H₂O   +  NaCl

3)   potassium metal with hydrochloric acid:

2K  +    2HCl   ---->   2KCl    +   H₂

4)

a) KOH  =  potassium hydroxide is strong base

b) H₂Se =  hydrogen selenide is acid

c) C₂H₃O₂H = acetic acid

d) Fe(OH)₂ = iron(II)hydroxide is base

e) HCN = hydrogen cyanide is weak base.

T o learn more about acids and bases here

https://brainly.com/question/9936252

#SPJ1

What is the mass number of an isotope that has two neutrons

Answers

Answer:

mass number = 3

Explanation:

Hydrogen is the only chemical species that has an isotope with 2 neutrons. Since all hydrogen atoms only have 1 proton, the mass number of hydrogen isotope with 2 nuetrons would be 3. The mass number is equal to number of protons + neutrons (+ electrons but they have virtually no mass so they can be excluded).

Other Questions
Inequality Graphs (A)Write the inequality for each graph. Solve for x in the equation p(m+qx)=rx+n Explain why you believe Karl Marx and Joseph Stalin are so significant that they are deserving of "the most significant person in history award". give me a speech about it! When the prospective client has previously been audited, auditing standards require that the successor auditor make certain inquiries of the predecessor auditor before accepting the engagement. true or false? Which image shows triangle ABC dilated by a scale factor of 3 centered at the point B What is the rate of change for Y=29/5x What resources does the Christian faith give us which might help us think clearly about either your current personal economic situation or economics in general Personality Adjective (FORM 2)QUESTION1) I'm sure you'll get a reply soon. Just try to be _________ .2) She is trying to be _______ despite her problems.3) When I disagreed with him, he became ______ and started shouting.4) He is very _______ about his role in the success of the film.5) My aunt always gives me expensive presents. She's so _______!6) He is extremely _______ He wants to become prime minister one day.7) He was so ______ he thought he could not possibly lose.8) It was very ______ of you to offer to drive is to the airport.9) He is such a _______ driver that he has had two accidents over the past month.10) While he was ill, his ______ servant stayed at his bedside day and night.* please somebody to help me to do the homework ? THANKYOU ! whats are equivalents to 9y +5y +4y .Write the half-reactions and devise a galvanic cell (write a cell diagram) to study each of the following reactions:(a) AgBr(s) Ag+(aq) + Br-(aq), a solubility equilibrium(b) H+(aq) + OH-(aq) --> H2O(l), the Brnsted neutralization reaction(c) Cd(s) + 2 Ni(OH)3(s) --> Cd(OH)2(s) + 2 Ni(OH)2(s), the reaction in the nickelcadmium cell graph the linear equation y= -5x + 2. on graph paper The sound of Matt and Peters arguing is familiar to everyone in the office by now. In an effort to make the best use of space and ensure a free flow of discussion and ideas, the founder of Markay Design had decided to convert the one-floor office of the company to an open plan with no walls between workers.The goal of such a layout is to eliminate boundaries and enhance creativity. But for Matt and Peter, the new arrangement creates a growing sense of tension.Peter prefers to keep his desk completely clean and clear, and he keeps a stack of cleaning wipes in a drawer to eliminate any dust or dirt.Matt, on the other hand, likes to keep all his work visible on his desk, so sketches, plans, magazines, and photos are scattered everywhere, alongside boxes of crackers and coffee cups. Peter finds it hard to concentrate when he sees Matts piles of materials everywhere, while Matt feels he can be more creative and free flowing when hes not forced to clean and organize constantly. Many of Matt and Peters coworkers wish theyd just let the issue drop. The men enjoyed a good working relationship in the past, with Peters attention to detail and thorough planning serving to rein in some of Matts wild inspirations. But of late, their collaborations have been derailed in disputes.Everyone knows its not productive to engage in conflicts over every small irritant in the workplace. However, completely avoiding conflict can be equally negative.What kind of conflict they are engaged in? What could Peter and Matts manager do to help them resolving their conflict? Discuss them in light of your understanding of conflict process and conflict resolution techniques. $$ \sqrt{6\frac{1}{4}} $$ I want to know everything about myoglobin mammals You began a new job at a pizza shop 3 weeks ago. You worked 6 hours during the first week, 4 hours during the second week, and 10 hours during the third week. Which graph best represents the total hours you worked over these 3 weeks? Define the term negative amortization in yourown words. (respond in one paragraph). from The Somnambulistby George MacDonaldOne night I was sitting in my room, devouring an old romance which I had brought from the library. It was late. The fire blazed bright; but the candleswere nearly burnt out, and I grew sleepy.Suddenly I found myself on my feet, listening with agony. Whether I had heard anything I could not tell; but I felt as if I had. Yes; I was sure of it. Faraway, I heard a faint cry. Driven by some secret impulse, I flew, without a moment's reflection, to the door, and stood in the great echoing hall, amid thetouches, light and ghostly, of the cobwebs set afloat in the eddies occasioned by my sudden entrance.A faded moonbeam fell on the floor, and filled the place with an ancient dream-light, which wrought strangely on my brain, and filled it, as if it, too, werebut a deserted, sleepy house, haunted by old dreams and memories. Recollecting myself, I went back for a light; but the candles were both flickering in thesockets, and I was compelled to trust to the moon. I ascended the staircase. Old as it was, not a board creaked, not a banister shook-the whole felt solid asrock. Finding, at length, no more stair to ascend, I groped my way on; for here there was no direct light from the moon-only the light of the moonlit air. I wasin some trepidation, I confess; for how should I find my way back? At length, after wandering into several rooms and out again, my hand fell on a latcheddoor. I opened it, and entered a long corridor, with many windows on one side. Broad strips of moonlight lay slantingly across the narrow floor, divided byregular intervals of shade.I started, and my heart swelled; for I saw a movement somewhere I could neither tell where, nor of what I was only aware of motion. I stood in the firstshadow andthe light to thamain Ingkinaith fanced Fundaan at any and the forSelect ALL the correct answers.In which two ways does the author best create suspense in the story?through the interplay of thoughts, dreams, and memories of the narratorby suggesting the unfamiliarity of the narrator with his surroundingsthrough the descriptive elements of moonlight, shadow, movement, and formby setting the scene late at night in a large, dark house without lights0by focusing on the rooms of the house through which the story progresses0000 a nurse is assessing a client and suspects that the client may be experiencing premenstrual dysphoric disorder (pmdd). applying the american psychiatric association criteria, the nurse would assess which symptoms? select all that apply. If injections exceed leakages:a. unemployment will rise.b. the price level will rise.c. inventories will increase.d. real output will fall. Here are selected data for Sunny Sky Corporation: Beginning raw materials inventory $37,000 Beginning work in process inventory $62,200 Beginning finished goods inventory $58,300 Cost of materials purchased $151,000 Cost of direct materials requisitioned $91,300 Direct labor incurred $135,000 Actual manufacturing overhead $160,000 Cost of goods manufactured $287,000 Cost of goods sold $265,000 Manufacturing overhead rate (per dollar of direct labor cost) $1.25 What is the finished goods ending inventory