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What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 525 cal of work done on it

Sagot :

Answer:

1519.5 joules

Explanation:

What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 525 cal of work done on it

first, convert cal to joules

1 cal =4.18 joules

so 525 cal = 525 X 4.18 = 2194.5 joules

the system spent 675 joules heating the surroundings and was given

2194.5 joules by work done on it

so the net gain in energy is

2194.5 -675 = 1519.5 joules

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