C4 STOICHIOMETRY

Question 1

One mole

Answer 1

is defined as the amount of substance having the same number of particles as there are atoms
in 12 g carbon-12.

Question 2

molar mass

Answer 2

is the mass of one mole of a substance measured in gmol-1

Question 3

concentration

Answer 3

is the number of moles of solute per cubic decimetre of solution.

Question 4

empirical formula

Answer 4

is the simplest whole-number ratio of atoms in a compound.

Question 5

molecular formula

Answer 5

is the formula that shows all the atoms in a compound.

Question 6

limiting reagent

Answer 6

is the reagent which is used up first during a chemical reaction.

Question 7

avagadros law

Answer 7

states that one mole of any gas occupies the same volume at the same temperature and
pressure.