**Contents**show

## Why are mole ratios important?

The mole ratio is the proportion of number of moles of any two chemical entities involved in a compound or a chemical reaction. Studying the mole ratio is important **to calculate the reaction yield**, determine the stoichiometry and monitor the reaction kinetics.

## What does molar ratio mean?

The molar ratios identify **how many moles of product are formed from a certain amount of reactant**, as well as the number of moles of a reactant needed to completely react with a certain amount of another reactant.

## How do I calculate moles?

**How to find moles?**

- Measure the weight of your substance.
- Use a periodic table to find its atomic or molecular mass.
- Divide the weight by the atomic or molecular mass.
- Check your results with Omni Calculator.

## What is the formula for moles to grams?

Moles to grams example problem

Solution: Find out the molar mass of the substance (hint: you can use Molar mass of the substance alone to calculate molar mass). The molar mass of KClO3 is 122.548 g/mol. **Multiply the given number of moles** (2.50 mol) by the molar mass (122.548 g/mol) to get the grams.

## How do you find the simplest molar ratio?

**To find the simplest whole number ratio, divide each number by the smallest number of moles:**

- Sn: 0.664 / 0.664 = 1.00.
- O: 1.33 / 0.664 = 2.00.

## Can you reduce mole ratios?

Write the molar ratios for (a) NH_{3} to N_{2} and (b) H_{2}O to O_{2}. Note that **both ratios can be reduced**. Eventually, ratios like the above will be used in calculations. You may use the unreduced ratio or the reduced ratio in the actual calculation.