(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 energyas in (a) ?

(a) Calculate the energy needed to raise the temperature of10.0 g of i

1.	(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 energyas in (a) ?
Answer» SOLUTION :(a) Energy needed `(Q) =m XX C xx Delta T = 10.0xx 0.45xx ( 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`