If I have an unknown quantity of a gas at a pressure of 50.65 kPa, a volume of 25 liters, and a temperature of 300 K, how many miles of gas do I have?

0.51 moles of gas

Explanation:

Given data:

Pressure of gas = 50.65 kpa (50.65 /101 = 0.5 atm)

Volume of gas = 25 L

Temperature of gas = 300 K

Number of moles of gas = ?

Solution:

The given problem will be solve through ideal gas equation,

PV = nRT

P = pressure

V = volume

n = number of moles

R = general gas constant

T = temperature

Now we will put the values.

0.5 atm × 25 L = n × 0.0821 atm.L /mol.K × 300 K

12.5 atm. L =  n × 24.63 atm.L /mol

n = 12.5 atm. L /24.63 atm.L /mol

n = 0.51 mol

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