Calculate the change in internal energy of the system and determine whether the process is exothermic or en...

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Calculate the change in internal energy of the system and determine whether the process is exothermic or en...

Calculate the change in internal energy of the system and determine whether the process is exothermic or endothermic...
a) a 50-g sample of water is cooled from 30C to 15C thereby losing approximately 3140 J of heat.
b) A chemical reaction releases 8.65 kJ of heat and does no work on the surroundings.

2007-06-04 12:25:16 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

1 answers

50*4.2*15 - 3140

8.65 kJ

2007-06-05 07:18:25 · answer #1 · answered by ag_iitkgp 7 · 0⤊ 0⤋