Question

Calculate the number of kj of heat necessary to raise the temperature of 60 g of aluminium from 35°C to 55°C. Molar heat capacity of Al is 24 J mol​

Answer 1

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No. of moles of Al (m) = (60g)/(27 g mol

Molar heat capacity (C) = 24  J mol

Rise in temperature (∆T) = 55 – 35 = 20°C = 20 K

Heat evolved (q) = C x m x T = (24 J mol

) x (2.22 mol) x (20 K)

= 1065.6 J = 1.067 kj.

❣️☺️hope this helps uh☺️❣️

Answer 2

No. of moles of Al (m) = (60g)/(27 g mol

Molar heat capacity (C) = 24  J mol

Rise in temperature (∆T) = 55 – 35 = 20°C = 20 K

Heat evolved (q) = C x m x T = (24 J mol

) x (2.22 mol) x (20 K)

= 1065.6 J = 1.067 kj