Calculate the standard enthalpy of reaction, ΔrH°, for the reaction below using the thermochemical equations given

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Calculate the standard enthalpy of reaction, ΔrH°, for the reaction below using the thermochemical equations given. Submit your answer with no units and to one decimal place.

2 MnO₂ (s) + CO (g)  → Mn₂O₃ (s) + CO₂ (g) ΔrH° = ?

 Thermochemical Equation

ΔrH° (kJ/mol)

MnO₂ (s) + CO (g)  → MnO (s) + CO₂ (g)

-166

Mn₃O₄ (s) + CO (g)  → 3 MnO (s) + CO₂ (g)

-46.6

3 Mn₂O₃ (s) + CO (g)  → 2 Mn₃O₄ (s) + CO₂ (g)

-142.4