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8. It is known that 3.6 g of simple carbon is burned in 6.4 g of O2 until the reactants are exhausted, giving off XkJ of heat. The heat of complete combustion of simple carbon is Y kJ•mol-1 . What is the heat of reaction △H for the reaction of 1 mole of simple carbon with O2 to form CO?
(A) -YkJ•mol-1
(B) -(10X -Y) kJ•mol-1
(C) -(5.X- 0.5Y) kJ•mol-1
(D) +(10X-Y)kJ•mol-1
(E) +(5X -0.5Y) kJ•mol-1



8. It is known that 3.6 g of simple carb..-阿摩線上測驗