limiting reactants

Question 1

explain in steps what you do to find the mass of a reactant/product ?

Answer 1

1. Cross out anything not in question
2. divide the num which is given in g in question by itself
3. x by the mass in the question

Question 2

Experiment for working out empirical fotmula

Answer 2

Crucible heat til its red hot
Leave c to cool weigh it with lid
Magnesium ribbon into c reweigh it reading now -
i reading
Heat c with lid on leave small gap to allow oxygen to enter c
Heat 4 10 mins
Allow c to cool reweigh mass +