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6. What is the mass, in grams, of 1.92 moles of Ca(OH),?

Answer:

1.03 x 10²³ atoms NaCl

Explanation:

To find the amount of table salt (NaCl) in atoms, you need to (1) convert grams to moles (using the molar mass) and then (2) convert moles to atoms (using Avogadro's Number). It is important to arrange the ratios/conversions in a way that allows for the cancellation of units.

(Step 1)

Molar Mass (NaCl): 22.99 g/mol + 35.45 g/mol

Molar Mass (NaCl): 58.44 g/mol

10 grams NaCl                1 mole
------------------------  x  -----------------------  =  0.17 moles NaCl
                                   58.44 grams

(Step 2)

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

0.17 moles NaCl           6.022 x 10²³ atoms
--------------------------  x  --------------------------------  =  1.03 x 10²³ atoms NaCl
                                                 1 mole

Answer: 0.27 moles of CO2 and 11.88 grams of CO2

Explanation: Use the Ideal Gas Law, PV = nRT, substitute the values given and solve.

I can't seem to upload procedure but:

P = 1.5atm

V = 4.5L

n = moles

R = 0.0821gr/mol (when using atm, kPa is 8.31)

T = 300K

Isolate what you don't have, in this case n. Change PV = nRT to PV/RT = n. Substitute the values to get moles. Once you have this, multiply the value by the molar mass of CO2 (44gr/mol) to get the mass of CO2 in grams.

The pOH of the 0.001 M NaOH solution is approximately 3.

To determine the pOH of a solution, we need to know the concentration of hydroxide ions (OH-) in the solution.

In the case of a 0.001 M NaOH solution, we can assume that all of the NaOH dissociates completely in water to form Na+ and OH- ions. Therefore, the concentration of hydroxide ions in the solution is also 0.001 M.

The pOH is calculated using the equation:

pOH = -log[OH-]

Substituting the concentration of hydroxide ions, we have:

pOH = -log(0.001)

Using a calculator, we can evaluate the logarithm:

pOH ≈ 3

Therefore, the pOH of the 0.001 M NaOH solution is approximately 3.

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Answer:

65.0 K

Explanation:

To find the temperature, you need to use the Ideal Gas Law:

PV = nRT

In this equation,

-----> P = pressure (pKa)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas Constant (8.31 L*kPa/mol*K)

-----> T = temperature (K)

You can plug the given values into the equation and simplify to find the temperature.

P = 202.65 pKa                          R = 8.31 L*kPa/mol*K

V = 2.0 L                                     T = ? K

n = 0.75 moles

PV = nRT

(202.65 pKa)(2.0 L) = (0.75 moles)(8.31 L*kPa/mol*K)T

405.3 = (6.2325)T

65.0 K = T

Answer:

The United Kingdom was a member of the Triple Entente, while Germany was a member of the Triple Alliance. c. The United Kingdom entered the war at the beginning, while Germany entered several years later. ... The United Kingdom engaged in trench warfare, while Germany refused to engage in any nontraditional tactics.

Answer:

Sodium oxide

Explanation:

Answer: Sodium oxide

Answer:

eyes makes the most sense to me

The new pressure of the gas in the syringe is 113 kPa

The new volume of the syringe will also increase if the syringe were warmed to 45°C and the pressure remains constant.

When we have a relation between the volume of a gas, the pressure, and the temperature participating together we can use the Combined Gas Law to solve the new pressure or volume.

The combined gas law shows the relation between Boyle's Law, Charles Law, and Gay-Lussac's Law and can be expressed by using the formula:

\(\mathbf{\dfrac{P_1V_1}{T_1}= \dfrac{P_2V_2}{T_2}}\)

From the parameters given:

\(\mathbf{\dfrac{105 \times 35 }{295 }= \dfrac{P_2 \times 35}{318}}\)

\(\mathbf{P_2= \dfrac{12.458 \times 318}{35}}\)

\(\mathbf{P_2= 113 \ kPa}\)

However, if the initial volume is increased let say to 50 mL and pressure is constant:

\(\mathbf{\dfrac{V_1}{T_1}= \dfrac{V_2}{T_2}}\)

\(\mathbf{\dfrac{ 50 }{295 }= \dfrac{ x}{318}}\)

\(\mathbf{x = \dfrac{ 318 \times 50 }{295 }}\)

x = 54 mL

Therefore, the new volume of the syringe will also increase if the syringe were warmed to 45°C and the pressure remains constant.

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The partial atmospheric pressure (atm) of hydrogen in the mixture is 0.59 atm.

Partial pressure of particular gas will be calculated as:

p = nP, where

Moles will be calculated as:

Moles of Hydrogen gas = 2.02g / 2.014g/mol = 1 mole

Moles of Chlorine gas = 35.90g / 70.9g/mol = 0.5 mole

Mole fraction of hydrogen = 1 / (1+0.5) = 0.6

Partial pressure of hydrogen = (0.6)(748) = 448.8 mmHg = 0.59 atm

Hence, required partial atmospheric pressure of hydrogen is 0.59 atm.

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Steel is produced from pig iron through a process known as steelmaking or iron and steel production.

The pig iron obtained from the blast furnace contains high amounts of carbon, impurities, and other elements. To convert pig iron into steel, the carbon content needs to be reduced to desired levels, and impurities must be removed.One common method of steelmaking is the basic oxygen process (BOP). In this process, pig iron is placed in a vessel called a converter, where oxygen is blown through the molten metal. The oxygen reacts with the carbon and impurities, causing them to oxidize and form gases that are released. Alloying elements and desired additives can be added at this stage to achieve specific steel properties. Another method is the electric arc furnace (EAF), where an electric arc is used to heat and melt the pig iron, allowing impurities to be oxidized and removed.The advantages of using steel are numerous. Steel is strong, durable, and versatile, making it suitable for a wide range of applications. It has high tensile strength, which means it can withstand heavy loads and pressures. Steel is also resistant to corrosion, making it ideal for construction, infrastructure, and transportation projects. It is a recyclable material, contributing to sustainability and reducing environmental impact. Additionally, steel can be fabricated into various shapes and sizes, allowing for customization and flexibility in design.References:

A. Ghosh and A. Chatterjee, Ironmaking and Steelmaking: Theory and Practice, PHI Learning, 2008.

R.H. Tupkary and V.R. Tupkary, An Introduction to Modern Iron Making, Khanna Publishers, 2010.

J.R. Davis, ed., ASM Specialty Handbook: Carbon and Alloy Steels, ASM International, 1995.

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Answer:

Explanation:

Interesting question - especially if you are afflicted by something like Leukemia where it pays to know everything you can about Hemoglobin.

Molecules

1 mole of anything has 6.02 * 10^23 in this case molecules

6.4*10^-3 moles has x number of molecules

Set up the proportion

1/6.4*10^-3   =  6.02 * 10^23 molecule / x          Cross Multiply

x = 6.4*10^-3 * 6.02 * 10^23

x = 3.853*10^21 molecules

Mass Hemoglobin

1 mol of hemoglobin is 64456 grams

6.4*10^-3 moles = x grams                                  Cross multiply

x = 64456 * 6.4*10^-3

x = 412.5 grams of hemoglobin in this woman's body.

If you are American and think in pounds, then this is roughly a pound of hemoglobin.

Considering that you need hemoglobin to carry oxygen around to various organs, it is not an awful lot. That's the miracle of the human body.

Based on the Law of Conservation of Mass, the mass of products form when baking soda decomposes is 168 g/mole.

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.

From the equation of NaHCO3 → Na₂CO3 + H₂O + CO₂ , we have

Mass of baking soda = 2 x molar mass

Molar mass of NaHCO₃ = 84.007 g/mole

Mass of baking soda = 2 x 84.007 g/mole

Mass of baking soda =  168.014 g/mole=  168 g/mole

Therefore, based on the Law of Conservation of Mass, the mass of products form when baking soda decomposes is 168 g/mole.

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Answer:

the motion of gravity

Explanation:

Answer:

its c

Explanation

advhuosijoklxcmnjdabsuhggggabciaciudeifweingivg eygerigsygfe97rsghisdcvhbsduigwiugfu9uigdgiurfgyisdgfsdgfegiygewifgsdygfewusgfuyesigf7wgfiesgfiusgdfies

Answer:

sugar

Explanation:

they are white, it pours easily and you can hold them up as grains

There are approximately 1.62 x 10^25 water molecules in the 499.8 mL bottle of water.

To determine the number of water molecules in the given volume of water, we need to use the relationship between mass, volume, and molar mass of water.

First, we need to find the mass of water in the bottle:

Mass = Density * Volume

Mass = 0.967 g/mL * 499.8 mL = 483.9 g

Next, we need to convert the mass of water to moles using the molar mass of water. The molar mass of water (H2O) is approximately 18.015 g/mol.

Moles = Mass / Molar mass

Moles = 483.9 g / 18.015 g/mol = 26.88 mol

Finally, we can calculate the number of water molecules using Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules = Moles * Avogadro's number

Number of molecules = 26.88 mol * (6.022 x 10^23 molecules/mol) = 1.62 x 10^25 molecules

Therefore, there are approximately 1.62 x 10^25 water molecules in the 499.8 mL bottle of water.

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The molarity of the ammonium nitrate solution is 2281 M.

Molarity is defined as the number of moles of solute per liter of solution. It is also known as molar concentration of the solution and is used to calculate amount of substances in the solution.

Molarity = n/M

n = m / MW

m = 2 lbs = 1000/2.2 = 909 g

V = 53 x 3.79/1 = 200.9

MW = 80.04 g

M = m/Mw / V

M = 909/80.04 /200.9

M = 2281 M

Thus, the molarity of the ammonium nitrate solution is 2281 M.

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Answer:

-  40.66

-  9.91

Explanation:

For the first question:

Our theoretical compound is MR₂

1 mol of MR₂ contains 1 mol of M and 2 moles of R

Let's find out the molar mass:

9.45 g/mol + 18.12 g/mol . 2 = 45.69 g/mol

We can solve this, by an easy rule of three:

1 mol of MR₂ weighs 45.69 grams

Then, 0.89 moles may weigh 40.66 g

For the second question:

Our theoretical compound is D₂G

Let's determine the molar mass:

11.45 g/mol . 2 + 44.57 g/mol = 67.47 g/mol

1 mol of anything contains 6.02×10²³ molecules. By this definition we can say that 6.02×10²³ molecules weigh 67.47 grams. Let's solve by the rule of three:

6.02×10²³ molecules weigh 67.47 g

8.84×10²² molecules may weigh (8.84×10²² . 67.47 ) / 6.02×10²³ = 9.91 g

Answer:

24 carbons

48 hydrogens

24 oxygen

Explanation:

Answer:

what the other dude said

Explanation:

i want him to get brainiest

Answer:

Not really, the chances you will get hurt are insignificant

Explanation:

Answer:

In inorganic chemistry, a ternary compound is a compound containing three different elements. An example is sodium phosphate, Na3PO4. The sodium ion has a charge of 1+ and the phosphate ion has a charge of 3-. Therefore, three sodium ions are needed to balance the charge of one phosphate ion

Explanation:

Answer:

Not all ionic compound are composed of only monatomic ionic a ternary ionic compound is an ionic compound composed of three element in a typical ternary ionic compound there is still one type of cation and one type of anion involved the cation the anion or both is a polyatomic ion

Answer: The TRUE statements about an ion includes:

a. Anions result when atoms gain an electron.

b. Cations have more protons than electrons.

Explanation:

The fundamental unit of matter is ATOM, which is the smallest particle of an element that can take part in a chemical reaction. The constituents of the atom are PROTON, NEUTRON and ELECTRONS.

The theory of the possible model of an atom and the position of each constituent within the atom was given by Lord Rutherford. The nucleus of an atom is made up of the protons and neutron while the electron revolves round it. IONS are formed when these atoms either gains or losses these electrons.

When an atom gains electrons to complete it's outermost shell, it acquires a negative charge. This is because the electrons are more than the protons. This type of atom is called an ANION

When an atom losses an electron, it in turn acquires a positive charge. This is because the proton are more than the electrons. This is called the CATION.

Therefore the true statement about ions is option a and b.

Option C is false because it is an electron that is either loss or gained to form an ion not Neurons. Option D is wrong because Na+ lost one electron to become positively charged.

MnO4- + 4e- → MnO2 + 2H2O Now the half-equation is balanced in alkaline medium.

To balance the half-equation MnO4- → MnO2 in alkaline medium, we need to follow the steps for balancing redox reactions in basic solution. The goal is to balance the number of atoms and charges on both sides of the equation.

Start by balancing the atoms other than oxygen and hydrogen. In this case, we only have manganese (Mn) atoms. There is one Mn atom on both sides, so the Mn atoms are already balanced.

Balance the oxygen atoms by adding water (H2O) molecules to the side that lacks oxygen. Since there are four oxygen atoms on the left side (MnO4-) and only two on the right side (MnO2), we need to add two water molecules to the right side:

MnO4- → MnO2 + 2H2O

Next, balance the hydrogen atoms by adding hydrogen ions (H+) to the side that lacks hydrogen. In this case, the left side (MnO4-) already has sufficient hydrogen atoms, so no hydrogen ions need to be added.

Balance the charges by adding electrons (e-) to the side that has a higher charge. MnO4- has a charge of -1, while MnO2 has no charge. Since the left side has a higher charge, we need to add electrons to the right side:

MnO4- + 4e- → MnO2 + 2H2O

Now the half-equation is balanced in alkaline medium. The Mn atoms, oxygen atoms, hydrogen atoms, and charges are all balanced. The addition of water and hydrogen ions helps balance the oxygen and hydrogen atoms, while the addition of electrons balances the charges.

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Answer:

Hydronium ion

The conjugate acid of water is the hydronium ion ; \(H_3O^+,\)

Explanation:

It is an ion formed by the association of a hydrogen ion with a water molecule.

We will follow the following steps during water quality study :

1. Onsite assessment

2. water collection

3. Measure samples and record

4. study and evaluate

The oder to follow will be :

• 4- onsite assessment ;

• 1; - collect water sample

• 3; - measure samples and collect

• 2; - study and evaluate, conclude

Answer:

3.60 moles de CO₂

Explanation:

2CO(g) + O₂(g) → 2CO₂(g)

Para convertir moles de CO en moles de CO₂ debemos usar un factor de conversión con los coeficientes estequiométricos de la reacción, dejando las moles de CO en el denominador y las moles de CO₂ en el numerador:

Answer:The mass of 12 M&Ms can be calculated by multiplying the average mass of an M&M (0.625 g) by the number of M&Ms (12):

0.625 g * 12 = 7.5 g

The answer should be reported to three significant figures, so it would be 7.5 g.

There are no significant figures associated with 12 M&Ms because it is a whole number and does not have any uncertainty. Significant figures are used to indicate the degree of accuracy or precision of a measurement, and whole numbers are considered to be exact values without any uncertainty.

Explanation:

HCH bond angle is ~110 degrees.