Question

How to find the molar mass of a substance?

Answer 1

The molar mass is the mass of all the atoms in a molecule in grams per mole. To calculate the molar mass of a molecule, we first obtain the atomic weights from the individual elements in a periodic table. We then count the number of atoms and multiply it by the individual atomic masses

Answer 2

Each element has its own molar mass noted at the bottom of its square in the periodic table.

For example, oxygen is about 15.999 grams per mole. You should write down each individual element's molar mass before continuing. This is especially helpful when you get into looking at the molar mass of more complex chemical compounds.