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| Internal Energy | 22 mins | 0 completed | Learn |
| Calorimetry | 39 mins | 0 completed | Learn |
| Thermochemical Equation | 6 mins | 0 completed | Learn Summary |
| Hess's Law | 17 mins | 0 completed | Learn |
| Enthalpy of Formation | 13 mins | 0 completed | Learn Summary |
| End of Chapter 6 Problems | 52 mins | 0 completed | Learn |
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| Units of Energy |
| Endothermic & Exothermic Reactions |
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| Enthalpy |
Use the following data to calculate the standard heat (enthalpy) of formation, ΔH °f, of manganese(IV) oxide, MnO2 (s).
2MnO2 (s) → 2MnO (s) + O2 (g) ΔH = 264 kJ
MnO2 (s) + Mn(s) → 2MnO (s) ΔH = -240 kJ
Select one:
(a) -504 kJ
(b) -372 kJ
(c) 24 kJ
(d) -24 kJ
(e) 504 kJ
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