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- Calculate ΔH ° for the process Co3O4(s) ⟶ 3 Co(s) + 2 O2(g)
- from the following information:
- Co(s) + (1/2) O2(g) ⟶ CoO(s) ΔH ° = −237.9kJ
- 3Co(s) + O2(g) ⟶ Co3O4(s) ΔH ° = −177.5kJ
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