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ludmilkaskok [199]
3 years ago
8

At constant temperature and pressure, 2.05 g of oxygen gas O2 is added to a 1.0 L balloon containing 1.00 g of O2. What is the n

ew volume of the balloon?
Chemistry
1 answer:
leonid [27]3 years ago
5 0

Answer:

1.50 L.

Explanation:

  • From the general gas law:

<em>PV = nRT,</em>

Where, P is the pressure if the gas,

V is the volume if the gas container,

n is the no. of gas moles,

R is the general gas constant,

T is the temperature of the gas.

  • At constant P and T:

n₁V₂ = n₂V₁.

V₁ = 1.0 L, V₂ = ??? L.

n₁ = mass/molar mass = (2.05 g)/(32.0 g/mol) = 0.064 mol.

  • n₂ is the no. of moles of the total gas (2.05 g + 1.0 g).

n₂ = n₁ + (1.00 g)/(32.0 g/mol) = 0.0953 mol.

<em>∴ V₂ = n₂V₁/n₁ </em>= (0.0953 mol)(1.0 L)/(0.064 mol) = <em>1.489 L ≅ 1.50 L.</em>

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