Enter the molar masses and masses of two elements into the calculator to determine their atom ratio. The calculator will provide the ratio of the number of atoms of Element 1 to Element 2.

## Atom Ratio Formula

The following formula is used to calculate the atom ratio between two elements:

Atom Ratio = (Mass1 / Molar Mass1) / (Mass2 / Molar Mass2)

Variables:

- Mass1 is the mass of Element 1 (g)
- Molar Mass1 is the molar mass of Element 1 (g/mol)
- Mass2 is the mass of Element 2 (g)
- Molar Mass2 is the molar mass of Element 2 (g/mol)

To calculate the atom ratio, divide the mass of each element by its molar mass to find the number of moles, then divide the moles of Element 1 by the moles of Element 2.

## What is an Atom Ratio?

An atom ratio is a way to express the relative number of atoms of different elements in a chemical substance. It is calculated based on the mass of each element present and its molar mass. This ratio is important in stoichiometry and chemical analysis to understand the composition of compounds and reactions.

## How to Calculate Atom Ratio?

The following steps outline how to calculate the Atom Ratio.

- First, determine the molar mass of Element 1 (Molar Mass1) in grams per mole.
- Next, determine the mass of Element 1 (Mass1) in grams.
- Then, determine the molar mass of Element 2 (Molar Mass2) in grams per mole.
- Next, determine the mass of Element 2 (Mass2) in grams.
- Use the formula to calculate the Atom Ratio.
- Finally, compare your result with the calculator above to verify your calculation.

**Example Problem:**

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

Element 1 Molar Mass (Molar Mass1) = 12 g/mol (e.g., Carbon)

Element 1 Mass (Mass1) = 24 g

Element 2 Molar Mass (Molar Mass2) = 16 g/mol (e.g., Oxygen)

Element 2 Mass (Mass2) = 32 g