3.1 Amount of Substance

Question 1

What is the amount of substance measured in

Answer 1

Moles (n)

Question 2

What is a mole

Answer 2

One mole is the amount of substance that contains 6.02*10^23 particles

Question 3

What is the avogadro constant

Answer 3

6.02*10^23mol-1

The number of particles in each mole of carbon- 12

Question 4

The mass of 1 mole of atoms of an element equals the…

Answer 4

…relative atomic mass in grams

Question 5

What is molar mass?

Answer 5

M - gives the mass in grams in each mole of the substance
The mass per mole of a substance
Units - g mol^-1

Question 6

Equation to link amount of substance (n), mass (m) and molar mass (M)

Answer 6

n=m/M

Where:
n= number of moles/amount of substance
m= mass
M=Molar mass