Enter the mass of the substance (g) and the total number of moles of substance into the Molar Mass Calculator. The calculator will evaluate and display the Molar Mass.

## Molar Mass Formula

The following formula is used to calculate the Molar Mass.

MM = m / n

• Where MM is the Molar Mass (g/mole)
• m is the mass of the substance (g)
• n is the total number of moles of substance

## How to Calculate Molar Mass?

The following example problems outline how to calculate Molar Mass.

Example Problem #1:

1. First, determine the mass of the substance (g).
• The mass of the substance (g) is given as: 100.
2. Next, determine the total number of moles of substance.
• The total number of moles of substance is provided as: 25.
3. Finally, calculate the Molar Mass using the equation above:

MM = m / n

The values given above are inserted into the equation below and the solution is calculated:

MM =100 / 25 = 4.00 (g/mole)

Example Problem #2:

For this problem, the variables needed are provided below:

mass of the substance (g) = 60

total number of moles of substance = 302

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer.

MM = m / n = ?