20 What is the molar mass of a gas according to the following experimental data?
Mass of gas
Volume
Temperature
Pressure
40.0 g
220 cm3
17 °C
98 kPa
Ideal gas constant = 8.31 JK-1 mol-1
PV = nRT
A. 40.0x8.31×290
98220 = (831)17
8.31 (1)
98×0.220
B.
98x0.220
40.0x8.31x290
C. 40.0×8.31×17
98×0.220
98×0.220
40.0x8.31×17