The heat of solution of `NH_(4)NO_(3)` in water was determined by measuring the amount of electrical work needed to compensate for the cooling which the `NH_(4)NO_(3)` was added to the water, electrical energy was provided by passage of current through a resistance coil until the temperature of the solution reached the value it had prior to the addition of salt. In a typical experiment, `4.4g` of `NH_(4)NO_(3)` was added to `200g` water. A current of `0.75` ampere was provided through the heater coil , and the voltage across the terminals was `6.0V`. The current was applied for `5.2` minute. Calculate `DeltaH` for the solution of `1.0 mol e NH_(4)NO_(3)` in enough water to give same concentration as was attained in the above experiment.

Answer

`25.45xx10^(3)J;`