1.

Calculate the number of `kJ` of heat necessary to raise the temperature of `60.0 g` of aluminium from `35^(@)C` to `55^(@)C`. Molar heat capacity of `Al` is `24 J g m^(-1)`.

Answer» `q=nxxCxxDeltaT=(60/27 mol)(24 J mol^(-1)K^(-1))(55-35K)`
`=1066.7 J=1.07 kJ`


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