Question

A gas under a pressure of 74 mmHg and at a temperature of 75°C occupies a 500.0-L container. How many moles of gas are in the container?

Answer 1

Answer:

16.98 moles

Explanation:

Pressure = 74 mm Hg = 74/76 atm = 0.97 atm = 0.97 x 101325 Pa= 98285.25 Pa

Temperature = 75°C = 348 K

Volume of the container = 500 L = 500/1000 m³ = 0.5 m³

Using ideal gas equation:

PV = nRT

n = PV/RT

n = (98285.25 x 0.5)/(8.314 x 348) = 16.98 moles