Generic reaction help plz

Question

Consider the generic reaction:

2A+3B→C ΔHrxn= −115kJ

Determine the amount of heat emitted when each amount of reactant completely reacts (assume that there is more than enough of the other reactant).

 |ΔH|=_________   kJ

Part A- 1 mol A

Part B- 7 mol A

Part C- 2 mol B

Part D- 9 mol B

Answer 1

2A + 3B→C ... ΔH_rxn = −115kJ

Part A: 1 mol A x -115 kJ / 2 mol A = -57.5 kJ

Part B: 7 mol A x -115 kJ / 2 mol A = -403 kJ

Part C: 2 mol B x -115 kJ / 3 mol B = -76.7 kJ

Part D: 9 mol B x -115 kJ / 3 mol B = -345 kJ