# How to Calculate Moles in Plain English

Moles are a crucial concept in chemistry. They are used to measure the number of atoms or molecules in a substance. Calculating moles may seem challenging at first, but with a little practice, it can become an easy task. In this article, we will explain how to calculate moles in plain English.

## What Are Moles?

Before we dive into calculating moles, let's first understand what moles are. A mole is a unit of measurement that represents the amount of a substance. One mole is equal to 6.022 x 10^23 particles, which is also known as Avogadro's number.

## Calculating Moles

Calculating moles involves using the formula: Moles = Mass ÷ Molar mass The mass is the amount of substance in grams, and the molar mass is the mass of one mole of the substance.

### Example Calculation

Suppose you have 10 grams of sodium chloride (NaCl). The molar mass of NaCl is 58.44 g/mol. To calculate the number of moles in 10 grams of NaCl, we can use the formula: Moles = Mass ÷ Molar mass Moles = 10 g ÷ 58.44 g/mol Moles = 0.171 moles Therefore, 10 grams of NaCl is equal to 0.171 moles.