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OpenStudy (anonymous):
How much heat is absorbed during production of 139g of NO by the combination of nitrogen and oxygen? N2(g)+O2(g)→2NO(g), ΔH = + 43.0 kcal
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OpenStudy (dtan5457):
Find out how many moles of NO there is from 139 grams. 2NO=60 grams 139/60=2.31 moles now just multiply 2.31 by 43kcal
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