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20.0 g of ammonium nitrate (NH(4)NO(3)) ...

`20.0 g` of ammonium nitrate `(NH_(4)NO_(3))` is dissolved In `125 g` of water in a coffee-cup calorimeter, the temperature falls from `296.5 K` to `286.4 K`. Find the value of `q` for the calorimeter. (Hint: heat capacity of water as the heat capacity of the calorimeter and its content)

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The correct Answer is:
`-5.28 kJ`
As heat capacity of water `=` heat ( capacity of calorimeter , the heat gained by water `=` heat lost by the calorimeter
`125xx ( 296.5 - 286.4) xx 4.18 J = 5282J = 5.282J`
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