Question

DESPERATE!!!!! What is the molar mass of an unknown gas that has a density of 2.29 g/L at a pressure of 0.75 atm and a temperature of 88. degrees Celsius?

Answer 1

The molar mass of the gas is 90.4g/mol

Step-by-step explanation:

To solve this question we have to use the equation:

d = PM / RT

Where d is density of the gas = 2.29g/L

P is pressure = 0.75atm

M is molar mass of the gas = ??

R is gas constant = 0.082atmL/molK

T is absolute temperature = 88°C + 273.15 = 361.15K

Solving for M:

dRT / P = M

2.29L*0.082atmL/molK*361.15K / 0.75atm = M

90.4g/mol = M

The molar mass of the gas is 90.4g/mol