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July 7, 2015

Homework Help: chemistry

Posted by tal on Thursday, May 15, 2014 at 12:03am.

Given the thermochemical equation:

2 Al(s) + 3/2 O2(g) > Al2O3(s) ΔH = -95.7 kJ

find the heat of reaction, ΔH, for the following reaction:

2 Al2O3(s)> 4 Al(s) + 3 O2(g)
Select one:
a. -95.7 kJ
b. +95.7 kJ
c. -47.8 kJ
d. +47.8 kJ
e. +191.4 kJ

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