How many kilocalories are required to heat 100.00 g of water from 34.2°c to 96.5°c?

Heat required in calories is given by product of mass in g and change in temperature in degree Celsius.

Formula is given by:

where, Q = heat required in calories

m = mass of substance in g

= change in temperature in degree Celsius

Insert the given vales of mass of water and temperature in above formula, we get:

 =

=

Now,

=

Thus, heat in kilocalories  =

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

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