Question

A sealed container comtains 1.50 mol of nitrogen gas, 2.00 mol of oxygen gas and 3.50 mol of argon gas. If the total pressure is 900 kPa, what is the pressure of the nitrogen gas?

Answer 1

Add mols to obtain nTotal.
mole fraction N2 = XN2 = nN2/nTotal
pN2 = XN2*Ptotal