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Litcyb

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## Homework Statement

What is the heat capacity of water in J*g*°C

## Homework Equations

A 74.8 sample of copper at 143.2gis added to an insulated vessel containing 165ml of water, Density of water = 1.00 at 25.0 °C.

The final temperature is 29.7° C

The specific heat of copper is 0.385 J*g*°C.

## The Attempt at a Solution

g of water =165g

quantity of heat= mass of substance * specific heat* temperature change

heat capacity = C (mass of substance * specific heat)

quantity of heat of copper = 74.5g*0.3858(29.7-143) =-3.268*10^-3

so, isn't this the same quantity of heat of water? if so, this how i tried to do it

165g of h2o* specific heat*(29.7-25)= 3.268*10^-3

specific heat =4.2147

so, 165*4.21= 700...

but that's wrong, the right answer is 74.5g HELP PLEASE!