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July 28, 2015

Homework Help: Chemistry

Posted by Hannah on Sunday, January 22, 2012 at 2:41pm.

For the reaction
Al(s) + 3 HCl(aq)->AlCl3(s) +3/2 H2(g) it was observed that when 4.00g of aluminum reacted with excess HCl, exactly 30,0 kJ of heat was released. What is the delta H for this reaction?

I do not understand how to get the delta H value.

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