Chemical formulae, equations and calculations

Question 1

Mole

Answer 1

The unit for amount of substance

Question 2

Mass

Answer 2

Number of mols*mass of 1 mol

Question 3

Empirical formula

Answer 3

Gives the simplest whole-number ratio of atoms present in a compound. It can be worked out from experimental data

Question 4

Molecular formula

Answer 4

Gives the actual number of each type of atom present in a molecule (covalent compound) or formula unit (ionic compound)