Answer:
Molar Mass of the gas = 43.9g/mol
Explanation:
The following data were obtained from the question
Mass = 31.3g
P = 5.71 atm
V = 3.04 L
T = 297 K
To solve for the molar mass of the gas, we must first obtain the number of moles of using the ideal gas equation PV =nRT
Where The gas constant R = 0.082atm.L/mol /K
PV = nRT
n = PV /RT
n = (5.71 x 3.04)/(0.082 x 297)
n = 0.7128mol
Recall,
n = Mass /Molar Mass
Molar Mass = Mass / n
Molar Mass = 31.3/0.7128
Molar Mass of the gas = 43.9g/mol
