Question

A sample of hydrogen, H2, effuses through a small hole at a rate of 9.00×10-6 mol/h. An unknown gas, under the same conditions, effuses at a rate of 1.11×10-6 mol/h. Calculate the molar mass of the unknown gas.

__________ g/mol

Answer 1

9.00×10-6 / 1.11×10-6 = sqrt(2x)

x= 32 g/mol and it is oxygen