Pages in this set

Page 1

Preview of page 1
The Mole

A mole is just a very large number of particles. Chemists often talk about `amount of substance'.
Basically all they mean is number of particles. Amount of substance is measured using a unit
called the mole (mol for short) and is given the symbol n. One mole is…

Page 2

Preview of page 2
Example 1: What mass of sodium hydroxide needs to be dissolved to make 50cm3 of a 2M
solution?

Number of moles = 2 x 50 = 0.1 moles of NaOH
1000
Molar mass of NaOH = 23 + 16 + 1 = 40 g mol-1
Mass = number of moles…

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »