Use the following information to find Hf of ethanol [CH3CH2OH(l)]. CH3CH2OH(l) + 3 O2(g) 2 CO2(g) + 3 H2O(g)

Hcomb = -1406.8
Hf of CO2(g) = -393.5 kJ/mol
Hf of H2O(g) = -241.8 kJ/mol

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.