Posted by Anonymous on Saturday, September 21, 2013 at 9:07pm.
Consider the following reaction:
2Fe2O3 --> 4Fe + 3O2
∆Hrxn° = +824.2 kJ
The decomposition of 29.0 g of Fe2O3 results in
a. the release of 150 kJ of heat
b. the release of 12000 kJ of heat
c. the absorption of 12000 kJ of heat
d. the absorption of 150 kJ of heat
e. the absorption of 74.8 kJ of heat
f. the release of 74.8 kJ of heat
Chemistry - DrBob222, Saturday, September 21, 2013 at 9:30pm
824.2 kJ x (29.0/2*molar mass Fe2O3) = ?+kJ energy.
The sign of dH is +; therefore, it must be an absorption of energy. Calculate how much. It should be one of c,d,or e.
Chemistry - Anonymous, Saturday, September 21, 2013 at 9:39pm
Thank you DrBob222
Chemistry - srth, Monday, January 25, 2016 at 8:27pm
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