Unit 3 Sec. C Summary HW 2

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10)

11) a. C₅H₁₂ + 8 O₂ –––> 5 CO₂ + 6 H₂O + 3510 kJ

b. C₃H₈ + 5 O₂ –––> 3 CO₂ + 4 H₂O + 2200 kJ
c. 2 C₆H₁₄ + 19 O₂ –––> 12 CO₂ + 14 H₂O + 4141 kJ

Section C.3

1) a. It requires energy to break it apart.

b. Requires energy

c. It’s similar because it separates the product.

d. The chemical bonds attach to each other just like two magnets.

4) a. Exothermic because the burning fossil fuels releases energy.
b. The biomolecules of prehistoric plants and animals.