Question 23M.1.HL.TZ1.3

What is the molar mass of a gas according to the following experimental data?

Ideal gas constant = 8.31 J K⁻¹ mol⁻¹
PV = nRT

A.  $\frac{40.0\times 8.31\times 290}{98\times 0.220}$

B.  $\frac{98\times 0.220}{40.0\times 8.31\times 290}$

C.  $\frac{40.0\times 8.31\times 17}{98\times 0.220}$

D.  $\frac{98\times 0.220}{40.0\times 8.31\times 17}$