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

3771 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

Describe the bonding present in a piece of sodium metal.


How do you calculate the number of moles of CO2 molecules if the mass is 22g


Calculate the percentage, by mass, of carbon in sodium hydrogencarbonate (NaHCO3)


What is the difference between an ionic and a covalent bond?


We're here to help

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

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning