What is a mole?

A mole is a name given to a certain number of particles. Amounts of various substances are measured in a unit known as the mole (known as mol for short, symbol n). 

One mole is approximate 6.02 x 1023 particles (this number is known as the Avogadro constant, NA)

Number of moles  = Number of particles you have ÷ Number of particles in a mole

For example: I have 1.5 x 1024 C atoms - how many moles of carbon do I have? 

Number of moles = (1.5 x 1024) ÷ (6.02 x 1023)

                            = 2.49 moles

MB
Answered by Meenakkhi B. Chemistry tutor

3636 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

Explain the reactivity of group 1 metals


Why does increasing the concentration of a reactant increase the rate of reaction?


Nitrogen reacts with hydrogen to produce ammonia. Calculate the mass of ammonia made from 84.0g of nitrogen.


Explain the significance of atomic number and mass number in determining atomic properties. Which of these changes in isotopes?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences