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Calculate the amount of heat released at...

Calculate the amount of heat released at constant pressure when 10 moles of carbon react with 6 moles of `O_(2)` leaving none of the reactants.
`DeltaH_("combustion")C_(("graphite"))=-390KJ//"mole",`
`DeltaH_("combustion")CO(g)=-250KJ//"mole"`

A

1900KJ

B

750KJ

C

3900KJ

D

2450KJ

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The correct Answer is:
a
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