A sample of sulfur dioxide , SO 2 , effuses through a small hole at a rate of 9.0010 -6 mol/h. An unknown gas, under the same conditions, effuses at…

A sample of sulfur dioxide, SO2, 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 7.80×10-6 mol/h. Calculate the molar mass of the unknown gas.
________ g/mol