Answer to Question #323102 in General Chemistry for Penny

General Chemistry

Question #323102

How much energy in KJ is needed to raise the temperature of a 55g sample with a specific heat 0.897 J/gk from 22.4* C to 94*C?

Expert's answer

∆H= MC∆T

M= 55g

C= 0.897J/g/K

∆T=94-22.4= 71.6K

∆H= 55×0.897×71.6

= 3532.386J

=3532.386÷1000 kJ

= 3.532386kJ

= 3.532kJ

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