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Safari File Edit View History Bookmarks Window Help ezto.mheducation.com mcgraw hill connect- Yahoo Search Resuits Yahoo Search Results Question 4 (of 14) value 10.00 points 3 atempts letft Check my work Enter your answer in the provided box The combustion of coal with oxygen forms CO, and releases 94 kcal of energy. AH-94 kcal/mol How much energy is released when 8.0 mol of C reacts? kcal of energy released Report answer to appropriate number of significant figures. References eBook & Resources WWTB Question

Explanation / Answer

when 1 mol of C reacts, energy released = 94 kcal
So,
for 8 moles of C, energy released = 8*94 kcal
= 752 kcal

Answer: 7.5*10^2 kcal
Updating it to 2 significant figures

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