Enthalpy of formation of NH 3 is - 46 kJ/kg mole. The enthalpy change – McqOptions

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1.	Enthalpy of formation of NH 3 is - 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH 3 ? N 2 + 3H 2 , is equal to __________ kJ/kg. mole.
A.	46
B.	92
C.	-23
D.	-92
Answer» C. -23

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