Chemistry

8 July, 01:27

Consider the following reactions. (Note: (s) = solid, (l) = liquid, and (g) = gas.)

Mg (s) + ½O2 (g) → MgO (s) + 146 kcal/mole

H2 (g) + ½O2 (g) → H2O (g), ΔH = - 57.82 kcal/mole

The temperature of the surroundings will:

increase

decrease

+4

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