Solutions to January Exam review #2

1. A
2. A
3. B ( use Q = mcDT)
4. C
5. D ( alcohol absorbs heat from the skin as it evaporates, leaving you with a cool sensation)
6. B
7. B
8. Reverse reaction 1 and multiply by 4: DH=47.7*4=191kJ

Then reverse reaction 2 and multiply by 6: DH=-241.8*6=-1450.8kJ

Answer = sum of above = -1260 kJ

9.

10.

11.

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