Apiece of glass with a mass of 32.50 g specific heat of 0.840 j/g*°c and an initial temperature of 75 °c was dropped into a calorimeter containing 57 g of water (specific heat 4.184 j/g*°c). the final temperature of the glass and water in the calorimeter was 79.2 °c. what was the initial temperature of the water?

Answer : The initial temperature of water is,

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

where,

= specific heat of glass =

= specific heat of water =

= mass of glass = 32.50 g

= mass of water = 57 g

= final temperature of mixture =

= initial temperature of glass =

= initial temperature of water = ?

Now put all the given values in the above formula, we get:

Therefore, the initial temperature of water is,

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