C4 Chemical Calculations

Question 1

Avogadro constant

Answer 1

The number of atoms, molecules, or ions in a mole of any substance (6.02x10^-23 per mole)

Question 2

Concentration

Answer 2

The amount of substance dissolved in a given volume of liquid

Question 3

Limiting reactant

Answer 3

The reactant in a chemical reaction that when used up causes the reaction to stop

Question 4

Mole

Answer 4

The amount of substance in the relative atomic or formula mass of a substance in grams

Question 5

Relative atomic mass a

Answer 5

the average mass of the atoms of an element compared with carbon-12 (which is given a mass of exactly 12). The
average mass must take into account the proportions of the naturally occurring isotopes of the element

Question 6

Relative formula mass M

Answer 6

The total relative atomic masses, sdded up in the ratio shown in the chemical formula of a substance