About 750 cal of heat is added to a system that does 42 J of work, what is the change in the system...

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Tanong

About 750 cal of heat is added to a system that does 42 J of work, what is the change in the system internal energy in calories?​

Mga sagot sa #1 sa Tanong: About 750 cal of heat is added to a system that does 42 J of work, what is the change in the system internal energy in calories?​

Given:

Q = 750 cal

W = 42 J = 10.0 cal (divide by 4.184)

Find:

ΔU = ?

Use the formula:

ΔU = Q – W

ΔU = (750 cal) – (10.0 cal)

ΔU = 740 cal

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