An electric furnace produce manganes (Mn) from (Mn304) by reaction with carbon. If 100 gram Mn304 reacts with 30 gram of carbon and produced 45 gram Mn, 20 gram MnO, CO (gas) and some reactants that have no reaction, calculate the standard heat of reaction. AH°F MnO = -92,000 cal/gmole, AHF CO= -26,414 cal/gmole, AH°F Mn304 = -331,400 cal/gmole, Atomic weight: C= 12, 0= 16, Mn= 55 Mn304 CO (g) C Electric furnace Mn MnO Mn304 C

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