Question

Hydrazine is used as ecofreiendly rocket fuel beacause its reaction with oxygen is highly exothermic and produces nitrogen and water vapour as final products. The reaction is N2H4(g) + O2 (g) → N2 (g) + 2H2O (g). At 273K the entropies of nitrogen N2 (g), oxygen O2 (g), water H2O (g) and hydrazine N2H4 (g) are 109 J/K-mol, 205 J/K-mol, 153.3 J/K-mol, and 121.5 J/K-mol respectively. Calculate the effeciency of hydrazine fuel if the standard enthalpy of combustion of hydrazine is 94.2 kJ/mol.

Answer 1

$\rm\huge\underline{Answer}$

Chemistry is a branch of natural science that deals principally with the properties of substances, the changes they undergo, and the natural laws that describe these changes.