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miv72 [106K]
3 years ago
15

I need help with the 2nd part first gets brainlist

Chemistry
1 answer:
mixer [17]3 years ago
8 0

Answer:

7. 4H₂O

Elements: Hydrogen, Oxygen

Number of molecules: 4

Number of elements: 8 H, 4 O

Number of Atoms: 12

Explanation:

The elements are determined by the their symbol i.e. H = hydrogen.

The number of molecules is determined by the coefficient ( the number in front of everything, in this case 4).

The number of elements is determined by the coefficient and the subscripts. Multiply the coefficient by the subscript after each element. When there is no subscript, it is equal to 1.  4H₂ = 4x2 = 8;  4O = 4x1 = 4.

The number of atoms is all the individual elements added together. 8+4 = 12.

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Ammonium carbonate decomposes upon heating according to
BaLLatris [955]

The total volume of the gas produced, given the data from the question is 11.84 L

<h3>How to determine the mole of (NH₄)₂CO₃</h3>
  • Mass of (NH₄)₂CO₃ = 11.83 g
  • Molar mass of (NH₄)₂CO₃ = 96 g/mol
  • Mole of (NH₄)₂CO₃ =?

Mole = mass / molar mass

Mole of (NH₄)₂CO₃ = 11.83 / 96

Mole of (NH₄)₂CO₃ = 0.123 mole

<h3>How to determine the volume of NH₃</h3>

Balanced equation

(NH₄)₂CO₃ -> 2NH₃(g) + CO₂(g) + H₂O(g)

From the balanced equation above,

1 mole of (NH₄)₂CO₃ decomposed to produce 2 moles of NH₃

Therefore,

0.123 mole of (NH₄)₂CO₃ will decompose to produce = 0.123 × 2 = 0.246 mole of NH₃

Thus, we can determine the volume of NH₃ produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
  • Pressure (P) = 1.02 bar
  • Gas constant (R) = 0.08314 bar.L/Kmol
  • Number of mole (n) = 0.246 moles
  • Volume of NH₃ (V) =?

PV = nRT

Divide both side by P

V = nRT / P

V = (0.246 × 0.08314 × 295) / 1.02

Volume of NH₃ = 5.92 L

<h3>How to determine the volume of CO₂</h3>

Balanced equation

(NH₄)₂CO₃ -> 2NH₃(g) + CO₂(g) + H₂O(g)

From the balanced equation above,

1 mole of (NH₄)₂CO₃ decomposed to produce 1 moles of CO₂

Therefore,

0.123 mole of (NH₄)₂CO₃ will also decompose to produce = 0.123 mole of CO₂

Thus, we can determine the volume of CO₂ produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
  • Pressure (P) = 1.02 bar
  • Gas constant (R) = 0.08314 bar.L/Kmol
  • Number of mole (n) = 0.123 moles
  • Volume of CO₂ (V) =?

PV = nRT

Divide both side by P

V = nRT / P

V = (0.123 × 0.08314 × 295) / 1.02

Volume of CO₂ = 2.96 L

<h3>How to determine the volume of H₂O</h3>

Balanced equation

(NH₄)₂CO₃ -> 2NH₃(g) + CO₂(g) + H₂O(g)

From the balanced equation above,

1 mole of (NH₄)₂CO₃ decomposed to produce 1 moles of H₂O

Therefore,

0.123 mole of (NH₄)₂CO₃ will also decompose to produce = 0.123 mole of H₂O

Thus, we can determine the volume of H₂O produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
  • Pressure (P) = 1.02 bar
  • Gas constant (R) = 0.08314 bar.L/Kmol
  • Number of mole (n) = 0.123 moles
  • Volume of H₂O (V) =?

PV = nRT

Divide both side by P

V = nRT / P

V = (0.123 × 0.08314 × 295) / 1.02

Volume of H₂O = 2.96 L

<h3>How to determine the total volume of gas produced</h3>
  • Volume of NH₃ = 5.92 L
  • Volume of CO₂ = 2.96 L
  • Volume of H₂O = 2.96 L
  • Total volume of gas =?

Total volume = 5.92 + 2.96 + 2.96

Total volume of gas = 11.84 L

Learn more about ideal gas equation:

brainly.com/question/4147359

Learn more about stoichiometry:

brainly.com/question/14735801

#SPJ1

7 0
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Explain the importance of concentration as it pertains to a solution
julia-pushkina [17]
There it is, I hope it gets to be helpful

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3 years ago
How does the kinetic-molecular theory explain the following properties of liquids:
Tcecarenko [31]

Answer:

"Kinetic energy of the gas is more as compared to that of the liquids. But when compare it to the solid, kinetic energy of liquid is more."

Explanation:

a) Relatively high density : This happens as a result of the tight or packed or can be say close arrangement of the particles.

b) Ability to diffuse : As we know that in gases the constant and the random motion of the particles of the liquid leads to diffusion. But it is very slow as compared to the gases and also porque liquid particles are close together.

c) Ability to evaporate:This happens as a result of the molecules of the liquid having different kinetic energies with particles having higher than that of the average energies that move faster.

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3 years ago
Which two trials could be used to measure the surface area
OLEGan [10]

Answer:

Trials A and B

Explanation:

4 0
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A saturated hydrocarbon is an organic compound which contains hydrogen and carbon joined _____.
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B) with single bonds..... Hope it helps, Have a nice day :)
8 0
3 years ago
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