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OpenStudy (anonymous):

The enthalpy change for the reaction, 2CO (g) + O2 (g) arrow 2 CO2 (g), can be calculated from ΔHf values for each reactant and product. Which substance or substances in this equation have a ΔHf value equal to 0.0 kilojoules? O2 (g) CO (g) O2 (g) and CO (g) CO2 (g)

OpenStudy (aaronq):

which one do you think?

OpenStudy (anonymous):

O2 g?

OpenStudy (aaronq):

yep

OpenStudy (anonymous):

Thanks!

OpenStudy (aaronq):

no prob!

OpenStudy (aaronq):

lol i didn't really do much

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