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The DeltaH(f)^(@) of MgO is -602KJxxmol^...

The `DeltaH_(f)^(@)` of MgO is `-602KJxxmol^(-1)` .when 20.15g MgO is decomposed at constant pressure according to the equation below , how much heat will be transferred?
`2MgO(s)to 2MG(s)+O_(2)(g)`

A

`1.20xx10^(3)KJ"of heat is released "`

B

`6.02xx10^(2)KJ"of heat is absorbed "`

C

`6.02xx10^(2)KJ"of heat is released "`

D

`3.01xx10^(2)KJ"of heat is absorbed "`

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The correct Answer is:
d
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