The heat of combustion of CxHy , carbon and hydrogen are a, b and c cal respectively. The heat of formation of CxHy will be?
a]. -(xb+(yc/2)+(a/2)) cal
b]. -(xb+(yc/2)-a) cal
c]. (xb-(yc/2)+(a/2)) cal
d]. (xb-(yc/2)-(a/2)) cal
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Answer:cxhy kya hai
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