chemistry

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5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius.

1)Calculate the heat of solution, DeltaHsolution.
2) calculate the heat of solution, DeltaHsolution, per mole of NaNO3.

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