The molar mass of CH4 is 16.04 grams per mole. The molar mass can be calculated by determining the atomic mass of each atom in the formula. The chemical formula CH4 represents methane.
The atomic weight of carbon is 12.01 grams per mole. Carbon comprises about 74.86 percent of the molar mass of each molecule of methane. The atomic mass of hydrogen is about one gram per mole. For the four hydrogen atoms in each molecule of methane, the total mass is about four grams per mole. The combined hydrogen atoms make up about 25.13 percent of the mass of methane.