1.

The combustion equations of carbon and carbon monoxide are as follows:C + O = CO, ΔH = - 394 kJ/kg . mole CO + 1/2 O = CO, ΔH = - 284.5 kJ/kg. mole. The heat of formation of CO is __________ kJ/kg. mole.

A. -109.5
B. +109.5
C. +180
D. +100
Answer» B. +109.5


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