Question

(a) Calculate the energy needed to raise the temperature of10.0 g of iron from `25^(@)` to `500^(@)C` if specific heat capacity of iron is `0.45 J (^(@C) g^(-1)`.
(b) What mass of gold of specific heat capacity `0.13 J ( .^(@)C)^(-1) g^(-1)` can be heated through the same temperature difference when supplied with the same amount of energy as in (a) ?

Answer 1

(a) Energy needed `(q) = m xx c xx Delta T = 10.0 xx 0.45 xx ( 500 -25) J = 2137.5 J`
(b) `q= m xx c xx Delta T`
`2137.5 = m xx 0.13 xx ( 500 - 25) ` or ` m = 34.6 g`