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(a) Calculate the energy needed to rais...

`(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)` ?

Text Solution

Verified by Experts

(a) Energy needed `(q)=mxxcxxDeltaT`
`10.0xx0.45xx(500-25)J=2137.5J`
(b) `q=mxxcxxDeltaT`,
`2137.5=mxx0.13xx(500-25)`
`m=34.6g`
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