22.4 L of a gas at a temperature of 0*C are at a pressure of 2.0 atm. How many moles of gas are contained in the sample?

The moles of gas are contained in the sample is 2 (two) moles

Explanation:

We will use the formula PV=nRT

R = Regnault constant

n=number of moles

We convert the temperature into Kelvin according to: 0°C = 273K. In this case, the temperature is 273L.

PV=nRT 2 atm x 22,4l = n 0,082 l atm/K mol x 273K

n = 2 atm x 22,4l/0,082 l atm/K mol x 273K = 2 moles