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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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djnextlevel djnextlevel
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5 months ago

Using Hess's law, what is the standard enthalpy of formation, ΔH°fof manganese(II) oxide, MnO(s)?

 2MnO2(s) → 2MnO(s) + O2(g)

ΔH°rxn = +272.0 kJ/mol

 MnO2(s) + Mn(s) → 2MnO(s)

ΔH°rxn = –248.9 kJ/mol



▸ –520.9 kJ/mol

▸ –396.5 kJ/mol

▸ –384.9 kJ/mol

▸ –147.6 kJ/mol

▸ 24 kJ/mol
Textbook 
Chemistry: Atoms First

Chemistry: Atoms First


Edition: 4th
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nalsaidynalsaidy
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5 months ago
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djnextlevel Author
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5 months ago
Good timing, thanks!
deathDoUsPart
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This helped my grade so much Perfect
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Just got PERFECT on my quiz
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