How to Calculate Molar Mass Step by Step

If you want to get good at figuring out molar mass, just follow these easy steps:

1. Learn the Periodic Table
First, get to know the periodic table. This table shows symbols and atomic weights for each element.
For example:

• Carbon (C) has an atomic mass of about 12.01 g/mol.
• Oxygen (O) has an atomic mass of about 16.00 g/mol.

2. Write the Chemical Formula
Next, find out the chemical formula of the compound you want to calculate the molar mass for.
A common example is water, which is H₂O. You need to know how many atoms of each element are in it.

3. Calculate the Total Mass
Now, you will multiply the atomic mass of each element by the number of atoms.
For H₂O:

• For Hydrogen: 2 atoms × 1.01 g/mol = 2.02 g/mol
• For Oxygen: 1 atom × 16.00 g/mol = 16.00 g/mol

Now, add those numbers together for the total molar mass:
Molar mass of H₂O = 2.02 + 16.00 = 18.02 g/mol

By following these simple steps, you’ll feel more sure about how to calculate molar mass correctly!