Equations And Reactants

Question 1

Relative formula mass

Answer 1

1) Add up the relative masses of each element in the compound

Question 2

Empirical formula (smallest whole number ratio of the atoms of each element in a compound)

Answer 2

1) Divide grams by relative mass
2) Divide answer by the smallest of the answers

Question 3

Concentration (how much soluble substance is dissolved in a solvent)

Answer 3

Concentration (g/dm^3) = mass (g) / volume (dm^3)

Question 4

Limiting reactants

Answer 4

1) Divide the mass by the relative mass of the compound

Question 5

Why may mass not appear to be conserved?

Answer 5

-Reaction is incomplete
-Unexpected side reactions
-Some product left, instead of weighing
-Spillages