List the three major atomic particles from lightest to heaviest. 2
Answers
Lightest: Proton
Middlest: Neutron
Heavyest: Electron
Related Questions
how many moles are there in 5.5x10^24 atoms of iron
Answers
Answer: 95.8 I hope this helps U :)
Explanation: Therefore 0.552 moles will have 0.552 moles X 6.022 X10 23 atoms/mole... are present in 1.52 mol of sulfur dioxide a) 2.29 x 10^23 b) 1.83 x 10^24 c) ... Mass of 1 H atom: 1.008 amu x 1.661 x10-24 g/amu = 1.674 x10-24 g. Mass of 1 mole of H ... many iron atoms are present in a piece of iron weighing 95.8 g?
identify the functional group present in the following compound, 3-methylbutyl acetate.
Answers
The functional group present in the compound 3-methylbutyl acetate is an ester.
An ester is a compound that consists of a carbonyl group (C=O) bonded to an oxygen atom, which is then bonded to an alkyl or aryl group. In 3-methylbutyl acetate, the "acetate" portion represents the ester functional group. The carbonyl group is part of the acetate moiety (CH3COO-), while the alkyl group "3-methylbutyl" is attached to the oxygen atom.
The presence of the ester functional group imparts specific chemical properties to the compound. Esters often have pleasant odors and are commonly found in various fragrances and flavors. They are also used in the production of solvents, plasticizers, and pharmaceuticals. The ester functional group is characterized by its distinctive carbonyl stretching vibration in infrared spectroscopy and can undergo hydrolysis or esterification reactions.
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Common indoor air contaminants include all of the following EXCEPT:
a)formaldehyde
b)ozone
c)sulfur oxides
d)carbon monoxide
e)radon
Answers
Answer:
Formaldehyde, ozone, carbon monoxide, and radon are common indoor air contaminants. Formaldehyde can come from building materials and household products, ozone can be produced by electronic devices, carbon monoxide can be produced by gas appliances, and radon can seep into homes from the ground. Sulfur oxides, on the other hand, are more commonly found in outdoor air pollution, particularly from industrial emissions and fossil fuel combustion.
Calculate the number of moles of NaCl contained in 5L of a 2.2M solution.
Answers
The number of moles of NaCl contained in 5 L of a 2.2 M solution is 11 moles
How do i determine the number of moles?The molarity of a solution gives a relationship between volume and mole of substance. The mathematical relationship is given below:
Molarity = number of mole / Volume
With the above formula, we can determine the number of mole of NaCl in the solution. Details below:
Volume of solution = 5 LMolarity of solution = 2.2 MNumber of mole of NaCl =?Molarity = number of mole / Volume
Cross multiply
Number of mole = molarity × volume
Number of mole of NaCl = 2.2 × 5
Number of mole of NaCl = 11 moles
Thus, the number of moles of NaCl is 11 moles
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Design a course of action for the development of a building project in
or highway, that provides for the maintenance of biodiversity in the plan,
Answers
Answer:
A, B & C form the vertices of a triangle.
∠ CAB = 90°, ∠ ABC = 73° and AB = 9.4.
Calculate the length of BC rounded to 3 SF
Describe the initial conditions. A beaker with 150 milliliters of solution. A tube is floating at the top of the solution. The tubing contains. The beakercontains.
Answers
The initial conditions are -The tubing contains-starch solution,lugol's solution,starch solution and lugol's solution.
In math and especially in unique frameworks, an initial condition, in certain settings called a seed value,[1]: pp. 160 is a worth of a developing variable sooner or later in time assigned as the underlying time (normally signified t = 0). For an arrangement of request k (the quantity of delays in discrete time, or the request for the biggest subordinate in consistent time) and aspect n (that is, with n different developing factors, which together can be signified by a n-layered coordinate vector), by and large nk starting circumstances are required to follow the framework's factors forward through time.
In both differential conditions in constant time and distinction conditions in discrete time, starting circumstances influence the worth of the powerful factors (state factors) at any future time. In nonstop time, the issue of tracking down a shut structure answer for the state factors as an element of time and of the underlying circumstances is known as the underlying worth issue. A comparing issue exists for discrete time circumstances. While a shut structure arrangement isn't generally imaginable to get, future upsides of a discrete time framework can be found by emphasizing forward one time span for each emphasis, however adjusting mistake might make this unrealistic over lengthy skylines.
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(Complete question) is:
Describe initial conditions of any experiment conducted in chemistry labs.
Answer: The CORRECT answer on edge is:
INITIAL conditions --
The tubing contains STARCH SOLUTION
The beaker contains LUGOL'S SOLUTION
FINAL conditions --
The tubing contains STARCH solution AND LUGOL'S solution
The beaker contains ONLY LUGOL'S solution
Explanation: I did the lab,
Consider the gas phase system below at a high temperature. The form of the expression for the equilibrium constant, K c, ____.
4NH3 + 5O2 --> 4NO + 6H2O
A. is Kc = [NO]4 [H2O]6 / [NH3]4 [O2]5
B. is Kc = [NH3]4 [O2]5 / [NO]4 [H2O]6
C. is Kc = [NH3] [O2] / [NO] [H2O]
D. is Kc = [NO]4[H2O]6 / [NH3]4[O2]5
E. cannot be determined without rate data
Answers
The correct answer is B. The expression for the equilibrium constant, Kc, is given by Kc = [NH3]^4 [O2]^5 / [NO]^4 [H2O]^6.
This expression is determined by the stoichiometric coefficients of the balanced equation. The equilibrium constant expression is obtained by raising the concentrations of the products to the power of their respective stoichiometric coefficients and dividing them by the concentrations of the reactants raised to their respective stoichiometric coefficients. The coefficients in the balanced equation indicate the ratio of moles of each substance involved, and the equilibrium constant reflects the ratio of concentrations at equilibrium.
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which of the following substance is usted up during photosynthesis
Answers
what is saturated solution?12
Answers
Answer:
A solution in which the maximum amount of solvent has been dissolved
Explanation:
For example, 36g of salt in 100g of water.
(a) (0) A drinking water treatment plant has a tank containing 100 m3 of untreated water. At time zero, a disinfectant-water solution containing 0.4 kg of Chlorine per m3 enters the tank at a rate of 20 m3 per minute. Simultaneously, a drain is opened at the bottom of the tank allowing the water to leave the tank at 10 m3 per minute. Assume that the solution in the tank is kept perfectly mixed at all times. Determine the Chlorine content as a function of time. [6 marks] (ii) What will be the Chlorine content in the tank after 20 minutes? [2 marks] (iii) How long will it take the Chlorine content in the tank to reach 180 kg?
Answers
It is not possible to determine the concentration of chlorine in the tank after 20 minutes. It takes approximately 2.96 minutes for the concentration of chlorine in the tank to reach 180 kg/m³.
The concentration of chlorine in a water treatment plant is to be determined as a function of time, as well as its concentration after 20 minutes and the time it takes to reach a concentration of 180 kg.
(a) (i) Using a mass balance equation, let C be the chlorine concentration in the tank and t be time. The mass of chlorine in the tank at any time, M(t), is M(t) = VC where V is the volume of water in the tank, which is initially 100 m3. The rate of change of chlorine concentration in the tank, dC/dt, is given by dC/dt = (1/V) dM/dt. Using the given values of the inlet and outlet rates, the rate at which chlorine enters the tank is dM/dt = 0.4 kg/m3 × 20 m3/min = 8 kg/min. The rate at which chlorine leaves the tank is given by the product of the concentration and the outlet rate. When the tank is initially filled with untreated water, the concentration of chlorine is zero.
Therefore, the rate at which chlorine leaves the tank initially is dM/dt = C × 10 m3/min = 0.This means that the concentration of chlorine in the tank remains zero until chlorine begins to enter the tank. Therefore, for t > 0, the differential equation is dC/dt = 8/(100 − 10t)Solving this differential equation gives C = ln(100 − 10t) + K where K is the constant of integration. The value of K can be found using the initial condition that the concentration of chlorine is zero when t = 0:C = ln(100 − 10t) − 2.3026
(ii) The concentration of chlorine in the tank after 20 minutes is C = ln(100 − 10(20)) − 2.3026= ln(−100) − 2.3026The value of the natural logarithm is undefined for negative numbers. Therefore, it is not possible to determine the concentration of chlorine in the tank after 20 minutes.
(iii) To find the time at which the concentration of chlorine in the tank reaches 180 kg/m3, set C equal to 180 kg/m³ and solve for t:180 = ln(100 − 10t) − 2.3026182.3026 = ln(100 − 10t)10t = 29.6493t = 2.9649 min. Therefore, it takes approximately 2.96 minutes for the concentration of chlorine in the tank to reach 180 kg/m³.
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What should scientists do when they see that the data collection or analysis
from their experiment has limitations?
O A. Ignore the limitations when they draw conclusions.
O B. Repeat the experiment to see if it still has limitations.
C. Decide not to report any of the experimental results.
O D. Describe the limitations in detail in their final report.
Answers
Answer:
D. Describe the limitations in detail in their final report.
Explanation:
Answer:
D. Describe the limitations in detail in their final report.
What is the control group? What is the independent variable? What is the dependent variable? What should Smithers’ conclusion be?
Answers
Answer:
It says it in the text
Explanation:
An unknown atom has 5
protons, 7 electrons and 12
neutrons.
What is........
A. The atomic mass =
Answers
Answer:
17
Explanation:
the atomic mass is away protons + neutrons, electrons are neglatable.
PLEASE HELP ASAP
Barney was a very inventive scientist and tried to perform the same experiments as those by famous scientists from long ago. One of the most challenging experiments was to roll out a very thin film of gold and put X-ray film in a circle around it. The difficult part was to get ahold of some radioactivity that he could shoot at the thin film for gold. One day, he ran into The Great Gazoo and told him his goal. The Great Gazoo said he had the perfect substance for him that was radioactive and should work. The element was named after him and had the symbol Gz. Barney quickly went back to his lab to run the experiment. What Barney noticed is that all the radioactive particles went through the gold film and none of them ricocheted back, but all went straight through the gold. Being puzzled, he quickly went to the lab to analyze this unknown radioactive substance. He found that the atomic number was 119, the mass number was 305. After a few more tests, Barney realized what was wrong with Gz. Your task is to figure out what was wrong with Gz by answering the following questions:
Whose experiment was Barney trying to imitate?
Where would Gz be located on Earth’s periodic table, column and row?
Give as many details on Gz that you could predict based on its location on the periodic table: type of chemical (metal, metalloid, or nonmetal), reactivity, ionization energy, electronegativity, and size of element.
What would the elements electron configuration end in?
Why did all the radioactive particles go straight through the gold film?
What would the daughter product be for Gz? Give all details for the atomic number, mass number, number of protons, neutrons and electrons.
If Gz had worked correctly, like Barney intended, what type of decay should Gz have had?
If Gz had worked correctly, what would the daughter product be? Give all details for the atomic number, mass number, number of protons, neutrons and electrons.
If Gz had worked correctly, what element would it become?
Answers
Answer:
a) Barney wants to repeat the rutheford experiment
b) the element will be in row 8 column 1 being an alkali metal
c) it should be a radioactive element, with a lot of mass
Explanation:
n this exercise they indicate that the particle Gz has atomic number 119 and atomic mass 305 amu, when reviewing the element periodicity table with this atomic number it has not yet been discovered, it should be in row 8 column 1 therefore it should be an alkali metal .
Therefore, it has only one electron in its last orbit.
a) Barney wants to repeat the rutheford experiment
b) the element will be in row 8 column 1 being an alkali metal
c) it should be a radioactive element, with a lot of mass
what would be the final concentration if you added the two 2 l of distilled water to the 0.5 l of 12 m kcl?
Answers
The final concentration after adding 2L of water to a 0.50 L volume of 12 M KCl is 2.4 M.
The concentration of a solute in terms of molarity is expressed as the number of moles of solute per liter of solution. The problem is regarding the dilution process of KCl. The molarity can be calculated using the dilution formula, expressed as (initial concentration of 1st solution)(initial volume)=(final concentration)(final volume). This formula shows that the number of moles remained the same throughout the process.
(12 M KCl) * ( 0.50 L) = (final concentration) ( 0.50 L + 2.0 L)
final concentration = 2.4 M KCl
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In an
The mass of a small stone was 27 g.
. The reading of the level of water in the graduated cylinder was 10 cm before the
stone was placed into the overflow can.
The reading of the level of water was 19 cm after the stone was placed into the
overflow can
(a) Calculate the volume of the stone.
(b) Calculate the density of the stone.
Answers
Answer:
d = 3 g/cm³
Explanation:
Given data:
Mass of stone = 27 g
Volume of water = 10 cm³
Volume of water+ stone = 19 cm³
Volume of stone = ?
Density of stone = ?
Solution:
Volume of stone = total volume - volume of water
Volume of stone = 19 cm³ - 10 cm³
Volume of stone = 9 cm³
Density of stone:
d = m/v
d = 27 g/ 9 cm³
d = 3 g/cm³
What is the stoichiometric relationship between ammonium hydroxide,
NH4OH, and phosphoric acid, H3PO4, in the acid/base reaction
below?
3NH4OH (aq) + H3PO4 (aq) → (NH4)3PO4 (aq) + 3H₂0 (1)
Answers
In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.
What is Ammonium Hydroxide?NH₄OH is the chemical formula of ammonia which is present in water.When ammonia is to be dissolved in water, the water molecules gives a proton to the NH₃ molecule.This will leads to the formation of an ammonium cation.The solubility of ammonia decreases down as we increase the temperature of water solvent. It is observed that this property of ammonia is quite similar to that of other natural gases.What is Phosphoric Acid?it contains one atom of phosphorus, four atoms of oxygen whereas three atoms of hydrogen.Orthophosphoric acid is one of the important chemicals in the family of phosphoric acid as it has myraid which is used in several industries, agriculture, and products that we use in our daily lives.Among the various types of acids, phosphoric acid is generally used in the removal of rust from metals like iron, steel, etc.In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.
Thus, from the above conclusion we can say that,In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.
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please help me on this question plizzźzz
what is the green colouring matter found in plants called
Answers
Answer:
the answer is chlorophyll....
Explanation:
if u need it's purpose just let me know
Explanation:
the green colouring matter found in plants is called chlorophyll.
Uranium has three common isotopes. If the abundance of Uranium-234 is 0.01%, the abundance of Uranium-235 is 0.71%, and the abundance of Uranium-238 is 99.28%, what is the average atomic mass of uranium?
Answers
Answer:
238 amu
Explanation:
(234 * 0.0001) + (235 * 0.0071) + (238 * 0.9928) = 238
The average atomic mass of uranium is 237.98 amu.
Given:
Three isotopes of uranium element.
To find:
The average atomic mass of uranium.
Solution:
Uranium-234Mass of uranium-234 isotope = 234 amu
Percentage of the abundance of uranium-234 isotope = 0.01%
Fractional abundance of uranium-234 isotope = 0.0001
Uranium-235Mass of uranium-235 isotope = 235 amu
Percentage of the abundance of uranium-235 isotope = 0.71%
Fractional abundance of uranium-235 isotope = 0.0071
Uranium-238Mass of uranium-238 isotope = 238 amu
Percentage of the abundance of uranium-238 isotope = 99.28%
Fractional abundance of uranium-238 isotope = 0.9928
The average atomic mass of uranium will be given by:
\(M=\sum [\text{Mass of an that isotope}\times \text{Fractional abundance of isotope}]\\\\=234amu\times 0.0001+235amu\times 0.0071+238amu\times 0.9928\\\\=237.9783 amu\approx 237.98 amu\)
The average atomic mass of uranium is 237.98 amu.
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What is the strongest force that exists between molecules of nitrogen
monoxide (NO)?
Answers
Answer:
Hydrogen Bonding (H-Bonding)
How many atoms of hydrogen are in 0.25 moles of carbon tetrahydride? ***Use scientific notation***
Answers
carbon tetrahydride: CH₄
there are 4 atoms H in 1 mole CH₄
N = n x No
No = avogadro's = 6.02 x 10²³
number of molecules CH₄:
= 0.25 x 6.02 x 10²³
= 1.505 x 10²³ molecules
for 4 atoms of H:
= 4 atoms/molecules x 1.505 x 10²³ molecules
= 6.02 x 10²³ atoms
What are the 5 chemical bonds?
Answers
There are five chemical bonds that you can learn about in chemistry. These chemical bonds include: Covalent bond, Ionic bond, Polar covalent bond, Metallic bond, and Hydrogen bond.
What are chemical bonds?
Covalent bond: It is the bond formed by sharing electrons between two atoms. It is one of the most powerful chemical bonds that holds molecules together. This bond can be formed between atoms of the same or different elements.
Ionic bond: It is the bond formed by the transfer of electrons from one atom to another. This bond is formed between metals and non-metals.
Polar covalent bond: It is the bond formed between two atoms that have different electronegativity values. The electrons in this bond are shared unequally between the two atoms. This bond is intermediate between the covalent and ionic bond.
Metallic bond: It is the bond formed between metal atoms. In this bond, electrons move freely between metal atoms.
Hydrogen bond: It is the bond formed between a hydrogen atom and an electronegative atom. This bond is responsible for many of the unique properties of water.
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A 12.66 g sample of a compound containing oxygen, hydrogen, and carbon is analyzed and found to contain 7.13 g of carbon and 1.25 g of hydrogen. Calculate the percent composition of the compound.
Answers
Mass of hydrogen = 1.25 g
Mass of carbon = 7.13 g
Mass of oxygen = 12.66 g - (1.25 g + 7.13 g) = 4.28 g
Next, we can calculate the mass percent of each element:
Mass percent of hydrogen = (1.25 g / 12.66 g) * 100% = 9.87%
Mass percent of carbon = (7.13 g / 12.66 g) * 100% = 56.41%
Mass percent of oxygen = (4.28 g / 12.66 g) * 100% = 33.72%
So the percent composition of the compound is 9.87% hydrogen, 56.41% carbon, and 33.72% oxygen
Escoge un problema en tu entorno, puede ser con un producto de cerámica, metal , tejido, madera, vidrio, plástico, etc. Que quieras elaborar materiales propios de tu región?
Answers
La respuesta correcta a esta pregunta abierta es la siguiente.
Al parecer, la pregunta está incompleta y no incluye ninguna referencia. A pesar de eso, lo que podemos decir es que el problema en mi entorno, puede ser con un producto de cerámica, metal , tejido, madera, vidrio, plástico, etc., al elaborar materiales propios de mi región, es la fabricación de muebles de madera pero desafortunadamente el problema que se presenta es la tala ilegal de árboles que sólo causan deforestación y daño a la ecología de mi región y al medio ambiente.
Un porcentaje importante de la economía de la región gira en toro a la fabricación de muebles de madera. Mucha gente trabaja en ello. El problema es que gran parte de esa actividad no está regulada y eso hace que organizaciones delictivas talen árboles en zonas protegidas, lo que provoca graves daños al ecosistema.
Why is the Sun's lifespan primarily based on its initial mass?
Answers
Answer:
Probably because there is more helium to burn. After billions of years there's only gonna be helium so no more of that firey energy.
I think....
What would be the likely pH of a weak dilute base?
Answers
a sample of co2 gas has a pressure of 48.7 mm hg in a 125-ml flask. the sample is transferred to a new flask, where it has a pressure of 76.0 mm hg at the same temperature. what is the volume of the new flask?
Answers
The volume of the new flask of CO2 gas is 164.4 mL.
Calculate the volume of the original flask.
Volume of the original flask = Pressure (P) x Volume (V) / Temperature (T)
P = 48.7 mm Hg
V = 125 mL
T = constant
The volume of the original flask = 48.7 mm Hg x 125 mL/constant
Calculate the volume of the new flask.
Volume of the new flask = Pressure (P) x Volume (V) / Temperature (T)
P = 76.0 mm Hg
V = unknown
T = constant
The volume of the new flask = 76.0 mm Hg x V / constant
Substitute the value of the volume of the original flask into the equation for the volume of the new flask.
76.0 mm Hg x V / constant = 48.7 mm Hg x 125 mL / constant
76.0 mm Hg x V = 48.7 mm Hg x 125 mL
V = 48.7 mm Hg x 125 mL / 76.0 mm Hg
V = 164.4 mL
Therefore, the volume of the new flask is 164.4 mL.
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How much space does 2 x 10^22 atoms of copper take up?
Answers
Answer:
2.35mL
Explanation:
The amount of space a substance holds is its volume.
Density = mass (g) /volume (L)
Where;
mole = mass/molar mass
Since 1 mol of Cu contains 6.022 × 10^22 atoms.
There are 2 x 10^22/6.022 × 10^22 moles in 2 x 10^22 atoms of copper
2 x 10^22/6.022 × 10^22
2/6.022 × 10^(22-22)
0.332 × 10^0
0.332mol
Mole = mass/molar mass
0.332 = mass/63.5
mass = 63.5 × 0.332
mass = 21.08g
Density = mass/volume
Density of copper (Cu) is 8.96 g/cm³
8.96 = 21.08/v
V = 21.08/8.96
V = 2.35mL or cm³
A reaction is progressing, and the g (initial) is 593 kcal/mol. the g (final) is 593 kcal/mol. this reaction can be characterized as:__________
Answers
The reaction can be characterized as an equilibrium reaction.
In a chemical reaction, the difference between the initial Gibbs free energy (ΔG(initial)) and the final Gibbs free energy (ΔG(final)) provides information about the spontaneity and direction of the reaction. The Gibbs free energy is a thermodynamic property that indicates the maximum work that can be obtained from a system at constant temperature and pressure.
When the initial Gibbs free energy (ΔG(initial)) is equal to the final Gibbs free energy (ΔG(final)), it suggests that the reaction has reached a state of equilibrium. In an equilibrium reaction, the forward and reverse reactions occur at the same rate, resulting in no net change in the concentrations of the reactants and products over time. At equilibrium, the reaction is balanced, and the system is stable.
The fact that the initial and final Gibbs free energies are the same (ΔG(initial) = ΔG(final) = 593 kcal/mol) indicates that the reaction has reached equilibrium. This implies that the reaction has achieved a balance between the forward and reverse reactions, with no further net change in the concentrations of the reactants and products.
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Which expression describes the heat evolved in a chemical reaction when the reaction is carried out at constant pressure?
ae represents internal energy, which can also be symbolized as au. the symbols w and q represent work and heat,
respectively.
ο δε - w
ο δε - q
ο δε
Answers
The expression that describes the heat evolved in a chemical reaction when carried out at constant pressure is ΔH = ΔE - w. Here, ΔH represents the enthalpy change, ΔE represents the internal energy change (also symbolized as ΔU), and w represents the work done.
Enthalpy is the sum of the internal energy of a system and the product of its pressure and volume. At constant pressure, the change in enthalpy is equal to the heat evolved or absorbed in the reaction. This is because any work done during the reaction is accounted for in the change in volume term of enthalpy, and at constant pressure, this term is constant. Therefore, the heat evolved or absorbed in the reaction is solely responsible for the change in enthalpy.
When a chemical reaction is carried out at constant pressure, the heat evolved in the reaction can be described using the symbol q, which represents heat. This is because, at constant pressure, the change in internal energy (symbolized by ΔE or ΔU) is equal to the heat absorbed or released in the reaction (represented by q) minus any work done (represented by w). Therefore, to explain the heat evolved in a chemical reaction at constant pressure, we would use the symbol q.
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