Aniron bar of mass 869 g cools from 94°C to 5°C.Calculate

Step 1 of 2

The goal of the problem is to calculate the heat released (in kilojoules) by the metal.

Given:

Mass of iron bar = 869 g

(Initial temperature) = 94°C

(Final Temperature) = 5°C

To calculate the heat released by the metal in a process, the specific heat and the amount of a substance, and the change in the sample’s temperature () should be known. The formula for calculating this heat change is given by:

                q = ms

where  = change in temperature, given by  =

        m = mass of substance

        s = specific heat

        q = amount of heat

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