Question

3. A piece of iron of mass 2-0 kg has a heat capacity of 966 J K-1 Find : (i) heat energy needed to warm it by 15°C, and (ii) its specific heat capacity in S.I. unit.

Answer 1

Answer:

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Explanation:

We know that heat energy needed to raise the temperature by 15o is = heat capacity × change in temperature. Heat energy required = 966 J K-1 × 15 K = 14490 J.

(ii)We know that specific heat capacity is = heat capacity/ mass of substance So specific heat capacity is = 966 / 2 = 483 J kg