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In a closed system, if 500 J of heat is added and 200 J of work is done by the s
In a closed system, if 500 J of heat is added and 200 J of work is done by the system, what is the change in internal energy?
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Practice Questions
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Q1
In a closed system, if 500 J of heat is added and 200 J of work is done by the system, what is the change in internal energy?
300 J
500 J
700 J
200 J
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According to the first law of thermodynamics, ΔU = Q - W. Here, ΔU = 500 J - 200 J = 300 J.
Questions & Step-by-step Solutions
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Q
Q: In a closed system, if 500 J of heat is added and 200 J of work is done by the system, what is the change in internal energy?
Solution:
According to the first law of thermodynamics, ΔU = Q - W. Here, ΔU = 500 J - 200 J = 300 J.
Steps: 6
Show Steps
Step 1: Identify the amount of heat added to the system. In this case, it is 500 J.
Step 2: Identify the amount of work done by the system. Here, it is 200 J.
Step 3: Recall the formula from the first law of thermodynamics: ΔU = Q - W.
Step 4: Substitute the values into the formula: ΔU = 500 J - 200 J.
Step 5: Perform the calculation: 500 J - 200 J = 300 J.
Step 6: Conclude that the change in internal energy (ΔU) is 300 J.
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