Molar mass is the weight of one mole of any chemical compounds.
How do you calculate molar mass of element (hydrogen)?
Molar mass for an element is simply the atomic mass of the element
Molar mass of hydrogen = atomic mass = 1.008 g/mol
How do you calculate molar mass of compound (water)?
Molar mass for a compound is the sum of atomic masses
Molar mass of water = H2O
2(1.008) + 15.999 = 18.015 g/mol
How do you calculate molar mass of sugar?
Example
Calculate the molar mass of sugar – C12H22O11
Solution:
The molar mass or molecular weight
12(12.0107) + 22(1.00794) + 11(15.99994) = 342.29648 g/mole
Atomic mass from the periodic table
| Elements | Symbol | Atomic Mass |
| Hydrogen | H | 1.00794 |
| Carbon | C | 12.0107 |
| Oxygen | O | 15.9994 |
