Calculating mole fraction in a gas mixture

Question

A 6.00 L tank at 9.9 C is filled with 8.35 g of carbon monoxide gas and 13.0 g of sulfur hexafluoride gas. You can assume both gasses behave as ideal gasses under these conditions. Calculate the mole fraction of each gas.

Answer 1

Carbon monoxide = CO

Sulfur hexafluoride = SF6

Moles CO = 8.35/molar mass CO

Moles SF6 = 13.0 g/molar mass SF6

After calculating moles of each gas, add the moles together to get total moles of gas in the mixture.

Divide moles of each by the total to find mole fraction of each gas.

 

NOTE: I've done 2 of these for you in previous questions.  Just follow that same procedure.