The molar mass of ethane, which is represented by the chemical formula C2H6, is about 30.06 grams per mole. The molar mass can be derived from the sum atomic weight of each atom contained in the compound.
The atomic mass of carbon, represented by the chemical symbol C, is 12.01 grams per mole. Since there are two atoms of carbon in a single molecule of ethane, the total mass of carbon in the compound is 24.02 grams per mole. The atomic mass of hydrogen, represented by the chemical symbol H, is about 1 gram per mole, for a total of 6 grams per mole of hydrogen in ethane.