Assuming That All The Heat Evolved Is Absorbed By 955 Grams Of Water In A Calorimeter, How Many Joules Of Energy Are Emitted By A Reaction In The Calorimeter That Increases The Water Temperature From 25.0C To 85.0C?

If all the heat evolved is absorbed in 955g of water and it has raised the temperature of water 60.0C i.e.(85C - 25C = 60C) and the specific heat of water in joules is 4.18J/g°C
so the heat evolved will be calculated by the following formula
Q = mass of water in grams x specific heat of water in J/g°C x [Final temperature in °C - initial temperature in °C]
Q = 955 x 4.18 x [85 - 25]
Q = 239514joules.
You don't have to convert anything in this problem.If you had water in kilograms,then you convert it to grams. Similarly if you need to show the answer in kilo joules,only then you need to convert joules to kilo joules.
(955 x 4.184 x (85 - 25) = 3815912.6 joules

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