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If C(s) + O2(g) rarr CO2(g), Delta H = X...

If `C(s) + O_2(g) rarr CO_2(g), Delta H = X and CO(g) + 1/2 O_2(g)rarr CO_2(g) Delta H = Y` then the heat of formation of COis-

A

X + Y

B

X - Y

C

Y - X

D

XY

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