The volume of a gas at pressure `21xx10^(4)N//m^(2) and` temperature `27^(@)C` is 83L. If R=8.3 J/mol/K, then the quantity of gas in g-mol will be

Options

A. 15
B. 42
C. 7
D. 14

Answer

C

Explanation

`PV = muRTrArr mu = (PV)/(RT) = (21xx 10^(4)xx 83xx10^(-3))/(8.3 xx 300)=7`