Answer:
The molar mass of the gas is 31.9 g/mol
Explanation:
Step 1: Data given
Mass of the gas = 0.311 grams
Volume = 0.225 L
Temperature = 55.0 °C
Pressure = 1.166 atm
Step 2: Calculate moles
p*V = n*R*T
⇒ p = the pressure of the gas = 1.166 atm
⇒ V = the volume of the gas = 0.225L
⇒ n= the number of moles of gas = TO BE DETERMINED
⇒ R = the ideal gas constant = 0.08206 L*atm/K*mol
⇒ T = the temperature = 55.0 °C = 328 Kelvin
n = (p*V)/(R*T)
n = (1.166*0.225)/(0.08206*328)
n = 0.009747
Step 3: Calculate the molar mass
Molar mass = mass / moles
Molar mass = 0.311 grams / 0.009747
Molar mass = 31.9 g/mol
The molar mass of the gas is 31.9 g/mol
