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23 July, 15:10

Classify each process according to direction of heat flow.

Evaporation of alcohol from skin: liquid C3H2O + 5.2 kJ → vaporized C3H30

Burning of propane in a gas grill: C3H8 + 502 - 3CO2 + 4H2O + 1652 kJ

Oxidation of iron to form rust: 4Fe + 302 → 2Fe2O3 + 2221 kJ

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Answers (2)
  1. 23 July, 15:49
    0
    Answer: heat flows in

    heat flows out

    heat flows out
  2. 23 July, 18:23
    0
    heat flows in

    heat flows out

    heat flows out
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