Find and fix each mistake in the following equilibrium constant expressions.
Part A
2H2S(g)?2H2(g)+S2(g)
Keq=[H2][S2][H2S]
a. Keq=[H2S]^2/[H2]2[S2]
b. Keq=[H2S]/[H2][S2]
c. Keq=[H2]^2[S2]/[H2S]^2
Part B
CO(g)+Cl2(g)?COCl2(g)
Keq=[CO][Cl2][COCl2]
a. Keq=[CO][Cl2]^2/[COCl2]^2
b. Keq=[COCl2]/[CO][Cl2]
c. Keq=[COCl2]^2/[CO][Cl2]^2

Answer:

a. 13.5 mL

b. 4.01 g and 112.0 mL

c. 22.3 mL

d. 2.62 g/mL

e. it will float on bromine and mercury

Explanation:

a. 13.534=10/x

b. 8.920=x/0.45 and 8.920= 1000/x. the reason its 1000 is because 1 kg is converted to grams, same unit for the density.

c. 0.789=17.6/x

d. 68.2-56.3 is the volume of the quartz. so 31.18/11.9 is the density

e. 33.93/12.5 gives you the density which is 2.7144. so in order to float, it has to be in a substance with a greater density such as bromine with a 3.119 density.

Hope that helped!

Answer:

The answer to your question is given below.

Explanation:

Sodium (Na) is a group 1 element because it has 1 electron in it's outermost shell.

Sodium ion (Na+) is formed when sodium atom (Na) lose it's outermost electron to attain the octet configuration of the noble gas element.

This can further be seen from the equation given below:

Na —> Na+ + e

Thus, we can represent the above in electronic configuration form as follow:

Na (11) => 1s² 2s²2p⁶ 3s¹

Na+ (10) => 1s² 2s²2p⁶

Answer:

A- conjugate acid

B- conjugate base

C- conjugate base

D- conjugate acid

Explanation:

According to the Brownstead-Lowry definition of acids, an acid donates a proton while a base accepts the proton.

If we look at the species ABCD, species A and D donate protons while species B and C accept protons.

C is the conjugate base of A while D is the conjugate acid of B, hence the answer.

Answer:

There will be 3 peaks.

Relative height of the atomic peaks would be; 158, 160 and 162

Explanation:

We are told that Bromine has two isotopes namely 79Br and 81Br in a 1 : 1 ratio (50 : 50).

This means that a compound which contains 1 bromine atom will have two peaks in the molecular ion region but it depends on which bromine isotope is contained in the molecular ion.

Thus;

Relative height of atomic peaks is given by;

m/z = 79Br¯ 79Br+ = 158

79Br¯ 81Br+ = 160

81Br¯ 81Br+ = 162

Answer:

The solution is not ideal and shows a positive deviation from Raoult’s law since Psolution (experimental) > Psolution (actual).

Explanation:

Number of moles of CS2 = 3.95g/76.13gmol-1 = 0.0519 moles

Number of moles of acetone = 2.43g/58.08gmol-1 = 0.0418 moles

Total number of moles = 0.0937 moles

Mole fraction of CS2 = 0.0519/0.0937 = 0.5538

Mole fraction of acetone = 0.0418/0.0937 = 0.4461

From Raoult’s law;

PCS2 = 0.5538 × 515 torr = 285.207 torr

Pacetone = 0.4461 × 332 torr = 148.1052 torr

Total pressure = 285.207 torr + 148.1052 torr = 433.3 torr

Answer:

The density in g/cm3 is 1.9333(put a line above the 3's to show it's repeating).

And no it is not gold because the density of gold in g/cm3 is 19.3.

Explanation:

Divide the mass by the volume in order to get an object's Density.

so, 23.2 divided by 1.20 mm3

=1.93333333 g/cm3

That is the density then you find out the density of gold in grams per cubic centimeter, that is 19.3 g/cm3

For example, gold will always have a density of 19.3 g/cm3; if a mineral has a density other than that, it isn't gold.

Answer: Copper

Explanation: did it on Edgenuity 2020

Answer:

first is copper

second is gold

Answer:

H₃O⁺.

Explanation:

Hello,

In this case, ionization of ethanol yields hydrogen cations and ethoxide anions as follows:

[tex]CH_3COOH+H_2O\rightleftharpoons H_3O^++CH_3COO^-[/tex]

Which is at equilibrium as ethanol is a weak acid. Thus, since the conjugate acid is formed by the outgoing H⁺ and the water, we say that the conjugate acid is then the hydroxonium ion, H₃O⁺ whereas the conjugate base is the remaining anion CH₃COO⁻.

Best regards.

Answer:

[tex]2.0 \times 10^{2} cm^{3}[/tex]

Explanation:

Step 1: Given data

Step 2: Calculate the initial volume

We will use the following expression.

V = 4/3 × π × r³

V = 4/3 × π × (2.5 cm)³

V = 65 cm³

Step 3: Calculate the final volume

Assuming ideal behavior, we can calculate the final volume of the bubble using the combined gas law.

[tex]\frac{P_1 \times V_1 }{T_1} = \frac{P_2 \times V_2 }{T_2}\\V_2 = \frac{P_1 \times V_1 \times T_2 }{T_1 \times P_2} = \frac{3.2atm \times 65cm^{3} \times 298K }{305K \times 1atm} = 2.0 \times 10^{2} cm^{3}[/tex]

Answer:

a. 473mL.

b. 79.38kg

c. 24.47lb of fat

d. 42.5g of N.

Explanation:

a. A qt is equal to 946mL. 0.500qt are:

0.500qt * (946mL / 1qt) = 473mL

b. 1lb is equal to 0.4536kg, 175lb are:

175lb *(0.4536kg / 1lb) = 79.38kg

c. The fat in kg of the athlete is:

74kg * 15% = 11.1kg of fat. In pounds:

11.1kg * (1lb / 0.4536kg) = 24.47lb of fat

d. The mass of nitrogen in the fertilizer is:

10.0oz * 15% = 1.5oz of N

1 oz is equal to 28.35g. 1.5oz are:

1.5oz * (28.35g / 1oz) = 42.5g of N

Answer:

A. 1 J=1kg•m^2/s^2

Explanation:

Energy refers to the capacity to do work. According to the International System of units (SI units), energy is measured in Joules.

Energy is represented by the force applied over a distance. Force is measured in Newton (N) and distance in metres (m). Hence, energy is Newton × metre (N.m)

Newton is derived from the SI units of mass (Kilograms), and acceleration (metres per seconds^2) i.e Kg.m/s^2, since Force = mass × acceleration.

Since; Energy = Newton × metres

If Newton = Kg.m/s^2 and metres = m

Energy (J) will therefore be; Kg.m/s^2 × m

1J = Kg.m^2/s^2

Answer: An atom is the sub-component of a molecule, or the smallest unit of matter. It is the smallest part an element can divide into. A molecule is made up of atoms that are bound by ionic, covalent or metallic bond.

Answer:

veryy help ful

Explanation:

An atom is the sub-component of a molecule, or the smallest unit of matter. It is the smallest part an element can divide into. A molecule is made up of atoms that are bound by ionic, covalent or metallic bond.

Answer:

Explanation:

These statements accurately describe the Doppler Effect: It indicates galaxy motion through light wavelengths. It indicates a galaxy moving toward Earth through red shift. I hope this helps.

All living organisms are composed of one or more cells. The cell is the basic unit of structure and organization in organisms. Cells arise from pre-existing cells.

Answer:

c. The atomic number of the daughter isotope is one more than the parent; the mass numbers are the same

Explanation:

Radioactive decay by beta particle emission involves the emission of an electron.

An electron is a very light particle and its emission does not reflect a loss in mass of the parent molecule. However, the atomic number of the parent molecule increase by one due to the retention of a proton.

Therefore, the daughter isotope has the same mass number as the parent molecule but its atomic number increases by one unit.

An example of beta particle emission is given below;

Th₀(234) ---> Pa₉₁(234) + e₋₁(0)

Thorium₉₀(234) emits a beta particle, e₋₁(0) to give Protactinium₉₁(234)

Answer:

c

Explanation:

Answer:

The two objects have different volumes.

Explanation:

The density of an object measures how closely packed the mass in the object is. Density of an object is obtained by taking the ratio of the mass of an object and its volume.

Density = mass/volume

The mass present in an object is constant, but the volume may vary with temperature. The volume of substances generally increases with temperature, therefore, density decreases with increase in volume.

Two objects at the same temperature having equal masses may or may not have the same density depending on the volume each object occupy.

If two substances are at the same temperature and have equal masses but different densities, then they must have different volumes.

Answer:

Not sure ask Estellia

Explanation:

Answer:

h= 4.9

Explanation:

l x w x h = a

7.66 x 3.75 x h = 141

28.725h = 141

Divide both sides by 28.725 to solve for h.

Answer:

I believe it's because density is how dense something is. So even if the volume(how much space it takes up in an object) is greater, if the densitity of the object is greater then the density of the water it will sink.

Explanation:

Answer:

Methyl Alcohol.

Acetate

Heptane

Dioxane

Explanation:

The boiling point of liquids are measure by observing the gas pressure or vapors temperature. There are few liquids whose boiling point is difficult to measure. The gas pressure differs for every liquid. It is important to observe the vapor pressure also to identify the boiling point. The most difficult boiling point identification is for Methyl alcohol as it has ability to absorb different level of pressure.

The liquids are Methyl Alcohol, Acetate, Heptane,Dioxane

Information regarding the liquids:

Find out more information about the pressure here: https://brainly.com/question/356585?referrer=searchResults

Answer:

can you provide a picture?

Answer:

Explanation:

Growing Peas

Planting depth should be roughly 2 inches with a spacing of about 2 inches apart. Water well at planting and provide at least 1 inch of water per week, particularly during the flowering and pod production stages. As the temperature rises, the vines may need to be deeply watered almost every day.

Make sure to moniter it and change the water depending on how dry or overwatered it looks like. :)

Answer:

9.744g of monosodium succinate.

4.925g of disodium succinate.

Explanation:

To find pH of the buffer produced by the mixture of monosodium succinate-Disodium succinate is obtained from H-H equation:

pH = pKa + log ([Na₂Suc] / [NaHSuc])

As you want a pH of 5.28 and pKa is 5.64:

5.28 = 5.64 + log ([Na₂Suc] / [NaHSuc])

-0.36 = log ([Na₂Suc] / [NaHSuc])

0.4365 = ([Na₂Suc] / [NaHSuc]) (1)

As total concentration of the buffer is 100mM = 0.100M:

0.100M = [Na₂Suc] + [NaHSuc] (2)

Replacing (2) in (1):

0.4365 = (0.100M - [NaHSuc] / [NaHSuc])

0.4365 = (0.100M - [NaHSuc] / [NaHSuc])

0.4365 [NaHSuc] = 0.100M - [NaHSuc]

1.4365 [NaHSuc] = 0.100M

[NaHSuc] = 0.0696M

And:

[Na₂Suc] = 0.0304M

As volume of the buffer is 1L:

[NaHSuc] = 0.0696 moles

[Na₂Suc] = 0.0304 moles

Using molar mass of both substances:

Mass of monosodium succinate:

0.0696moles * (140g / 1mol) = 9.744g of monosodium succinate.

Mass of disodium succinate:

0.0304moles * (162g / 1mol) = 4.925g of disodium succinate.

Answer:

True

Explanation:

Answer:

have the same number of atoms of each element in the reactants and in the products

Explanation:

The basic principle in balancing a chemical equation would simply be to have the same number of atoms of each element in the reactants and in the products.

A balanced chemical equation is one that has the same number of atoms of each element on the reactant and the product's side of the equation. For example, consider the equation below:

                     [tex]H_2 + O_2 --> H_2O[/tex]

On the reactant's side, there are 2 atoms of H and O while there are 2 atoms of H and 1 atom of O on the product's side. This is an imbalanced equation. In order for it to be balanced, the number of atoms of H and O on the reactant side must be equal to the number of H and O on the product side as below.

                        [tex]2H_2 + O_2 --> 2H_2O[/tex]

Answer:

114450

Explanation:

2*109 = 218

5*105 = 525

218*525 = 114450

Answer:

Explanation:

There is no way to measure the absolute value of the enthalpy of a substance. Only values relative to an arbitrary reference can be determined.

The reference point for all enthalpy expressions is called the standard enthalpy of formation (ΔHºf). Substances are said to be in the standard state at 1 atm, hence the term “standard enthalpy.” The superscript “°” represents standard-state conditions (1 atm), and the subscript “f” stands for formation. By convention, the standard enthalpy of formation of any element in its most stable form is zero.

For instance, molecular oxygen (O₂) is more stable than the other allotropic form of oxygen, ozone (O₃), at 1 atm and 25°C. Thus, we can write ΔHºf (O₂) 5 0, but ΔHºf (O₃) 5 142.2 kJ/mol.

Based on this reference for elements, we can define the standard enthalpy of formation of a compound as the heat change that results when 1 mole of the compound is formed from its elements at a pressure of 1 atm.

Answer:

This is the enthalpy change that occurs when a compound is formed from its component elements.

Explanation:

This is the enthalpy change that occurs when a compound is formed from its component elements.

Hello. This question is incomplete. The full question is:

A chemist must prepare 500.0mL of hydrobromic acid solution with a pH of 0.50 at 25°C. He will do this in three steps: Fill a 500.0mL volumetric flask about halfway with distilled water. Measure out a small volume of concentrated (5.0M) stock hydrobromic acid solution and add it to the flask. Fill the flask to the mark with distilled water. Calculate the volume of concentrated hydrobromic acid that the chemist must measure out in the second step. Round your answer to significant digits.

Answer:

31.62 mL

Explanation:

To achieve this result, you must start by calculating the H + concentration. You will do this using the following formula:

pH = -log [H +]

0.50 = -log [H +]

[H +] = 10 ^ -0.50

[H +] = 0.31623 mol / L

After that you must consider that hydrobromic acid will have a weak capacity to disassociate, since it has a strong nature. In this case, we can consider that [HBr] = [H +] = 0.31623 mol / L.

After reaching this reason, it is necessary that you dilute the stock solution, using the formula:

C1V1 = C2V2

5.0 * V1 = 0.31623 * 500.0

V1 = 31.62 mL

And so you finish the answer.

Answer:

the increasing mass number