Stoichiometry/Mole ratio he..

It gives it as a word problem.. ( please help with which ever letter u can its 3 questions using the same given things) ( or at least explain how to do them not sure what to do after getting mole ratio would really appreciate it

1. Given the balanced equation:

2 N2H4 + N2O4 => 3N2+4H2O

A. how many moles of dinitrogen tetrahydride are required to produce 57 moles of nitrogen?

B. How many moles of water are produced when 57 moles of nitrogen are made?

C. How many moles of dinitrogen tetroxide are required to produce 57 moles of nitrogen?

A.3moles nitrogen are given by 2moles dinitrogen tetrahydride

=>1mole nitrogen is given by 2/3moles dinitrogen tetrahydride

=>57moles nitrogen are given by 2/3*57=38 moles dinitrogen tetrahydride

B.when 3 moles of nitrogen are made 4 moles of water are produced

=>when 1 mole of nitrogen is made 4/3 moles of water are produced

=>when 57 moles of nitrogen are made 4/3*57=76 moles of water are produced

C.when 3 moles of nitrogen are made 1 mole of dinitrogen tetroxide are used

=>when 1 moles of nitrogen are made 1/3 moles of dinitrogen tetroxide are used

=>when 57 moles of nitrogen are made 1/3*57=19 moles of dinitrogen tetroxide are used