A system releases 255 cal of heat to the surroundings while delivering 428 cal of work. what is the change in internal energy of

Question

3 years ago

13

the system (in cal)?

1 answer:

vichka [17] · Answer 1 · 2022-01-11T03:00:46+03:00

7 0

Answer:-683 cal

Explanation:

Given

Heat released by system Q=-255 cal

as heat released is taken as negative and vice-versa

Work done by system W=428 cal

From First law of thermodynamics

$Q=\Delta +W , where \Delta U$ =change in internal Energy

$\Delta U=-255-428=-683$