Question

A sample of CO₂ gas at 25 ºC has a volume of 15 L and exerts a pressuer of 15.6 psi. How many grams of gas are in the sample?

Answer 1

$$PV=nRT=(m/M)RT$$

$$15.6 psi=1.08*10^5 K$$

$m=MPV/(RT)=44*1.08*10^5*0.015/(8.314*298)=28.77g$