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2Co2(g) O2(g) = 2CO2(g) Given that ∆H(Co) is -110.4kjmol-1 and ∆H (Co2) is -393.0kjmol-1 the...

2Co2(g) O2(g) = 2CO2(g)

Given that ∆H(Co) is -110.4kjmol-1 and ∆H (Co2) is -393.0kjmol-1 the energy change for the reaction above is
A)-503.7kj
B)-282.6kj
C) 282.6kj
D) 503.7kj

pls show your working?

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