A sample of hydrogen (2.02 g/mol) effuses through a porous container about 5.37 times faster than an unknown gas

molar-mass

#1

A sample of hydrogen (2.02 g/mol) effuses through a porous container about 5.37 times faster than an unknown gas. Estimate the molar mass of the unknown gas.
Answer in units of g/mol.

Answer:

the rate is inversely proportional to the √ of the molar mass (Graham’s law)

5.37 * √2.02 = √mm