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how much heat is liberated when 5kg of coal is burned if the coal is 96.2 % carbon by mass and the other materials in the coal do not react? Delta H of carbon is -394 KJ/mol
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ALL i wouls say is break down your question in 2 or 3 parts itd too long and i am sorry i am not a chemistry student i wish if i could help u:)
First you'll have to figure out the carbon compound formula. The rest of that 100% should be H. Find the number of moles of carbon and hydrogen. Then you can figure out the compound. Only then can you find the number of moles of the whole compound and multiply it with the delta H.
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