8. Using the standard heats of formation, what is the enthalpy change per mole of CO₂ for the following reaction? 2CO(g) + O₂(g) → 2CO₂(g) a. -506 kJ b. -284 kJ C. +284 kJ d. e. +506 kJ -617 kJ

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8. Using the standard heats of formation, what is the enthalpy change per mole of CO₂ for the following
reaction?
2CO(g) + O₂(g) → 2CO₂(g)
a. -506 kJ
b. -284 kJ
C.
+284 kJ
C.
d.
e.
9. A small 2.0-g candle is consumed in heating 100 g of water from 25°C to 75°C. If you ignore loss of heat to
the air, the energy produced per gram of the candle would be:
a.
8.56 kJ
d.
2.62 kJ
b. 5.23 kJ
e.
20.65 kJ
10.46 kJ
+506 kJ
-617 kJ
Transcribed Image Text:8. Using the standard heats of formation, what is the enthalpy change per mole of CO₂ for the following reaction? 2CO(g) + O₂(g) → 2CO₂(g) a. -506 kJ b. -284 kJ C. +284 kJ C. d. e. 9. A small 2.0-g candle is consumed in heating 100 g of water from 25°C to 75°C. If you ignore loss of heat to the air, the energy produced per gram of the candle would be: a. 8.56 kJ d. 2.62 kJ b. 5.23 kJ e. 20.65 kJ 10.46 kJ +506 kJ -617 kJ
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