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April 20, 2014

Homework Help: chemistry

Posted by Walter on Monday, January 23, 2012 at 9:49pm.

For the reaction Al (s) + 3 HCl (aq) -> AlCl3 (s) + ₃/₂ H2 (g), it was observed
that when 4.00 g of aluminum reacted with excess HCl, exactly 30.0 kJ of heat
were released. The delta H for this reaction is

a) 91.3 kJ
b) 120 kJ
c) 202 kJ
d) 7.50 kJ

I really need some assistance

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