Enter the moles of a substance and the total moles in the mixture into the calculator to determine the mole percentage. This calculator helps in finding the composition of a mixture in terms of mole percentage.

Mole Percentage Formula

The following formula is used to calculate the mole percentage:

Mole Percentage = \left(\frac{Moles of Substance}{Total Moles in Mixture}\right) \times 100%

Variables:

  • Moles of Substance is the number of moles of the specific substance in the mixture.
  • Total Moles in Mixture is the sum of the moles of all substances in the mixture.

To calculate the mole percentage, divide the moles of the substance by the total moles in the mixture and then multiply by 100 to get the percentage.

What is Mole Percentage?

Mole percentage is a way of expressing the concentration of a component in a mixture. It is the ratio of the moles of a particular substance to the total moles of all substances in the mixture, multiplied by 100 to give a percentage. This measurement is useful in chemistry for representing the composition of mixtures and solutions.

How to Calculate Mole Percentage?

The following steps outline how to calculate the Mole Percentage.


  1. First, determine the moles of the substance in the mixture.
  2. Next, determine the total moles of all substances in the mixture.
  3. Use the formula to calculate the Mole Percentage.
  4. Finally, calculate the Mole Percentage.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Moles of Substance = 2 mol

Total Moles in Mixture = 8 mol