Question

What is the volume of 0.04 mol of a gas at 0.9 kPa and 20°C?

Answer 1

Answer:

The correct answer is option A.

Explanation:

Pressure of the gas ,P=  0.9 kPa = 0.008882 atm

1 kPa = 0.0098 atm

Number of moles gases = n  = 0.04 mol

Temperature of the gas ,T =20°C = 293 K

Volume of the gas = V

Using An Ideal gas equation:

PV=nRT

$V=\frac{nRT}{P}=\frac{0.04 mol\times 0.0820 atm L/mol K\times 293 K}{0.008882 atm}=108.20 L\approx 108 L$

Hence, the correct answer is option A.

Answer 2

A. 108 L is the winner!