`(a)` Calculate the energy needed to raise the temperature of `10.0g` of iron from `25^(@)C` to `500^(@)C` if specific heat capacity of iron if `0.45J( .^(@)C)^(-1)g^(-1)`
`(b)` What mass of gold `(` of specific heat capacity `0.13J ( .^(@)C)^(-1)g^(-1)` can be heated can be heated through the same temperature difference when supplied with the same amount of energy as in `(a)` ?

Explanation

`(a)q=m.s.DeltaT=10xx0.45xx(773-298)J`
`=2137.5J`
`q=m.s.DeltaT`
`[`Given `=2137.5,T=(773-2980=475,s=0.13]`
`2137.5=mxx0.13xx475`
`m=34.61g`