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A+3/2 O(2) rarr AO(3) = 3x KJ AO(2)+1/...

`A+3/2 O_(2) rarr AO_(3) = 3x KJ`
`AO_(2)+1/2 O_(2) rarr AO_(3) = 2y kJ`
The heat of formation of `AO_(2)` is

A

`2y-3x`

B

`2x+3y`

C

`2y+y`

D

`3x//2y`

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