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If 100 J of heat is added to a system and 40 J of work is done by the system, wh
If 100 J of heat is added to a system and 40 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
If 100 J of heat is added to a system and 40 J of work is done by the system, what is the change in internal energy?
60 J
40 J
100 J
140 J
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According to the First Law of Thermodynamics, ΔU = Q - W. Here, ΔU = 100 J - 40 J = 60 J.
Questions & Step-by-step Solutions
1 item
Q
Q: If 100 J of heat is added to a system and 40 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 = 100 J - 40 J = 60 J.
Steps: 5
Show Steps
Step 1: Identify the amount of heat added to the system, which is 100 J. This is represented as Q.
Step 2: Identify the amount of work done by the system, which is 40 J. This is represented as W.
Step 3: Use the First Law of Thermodynamics formula, which is ΔU = Q - W.
Step 4: Substitute the values into the formula: ΔU = 100 J - 40 J.
Step 5: Calculate the result: ΔU = 60 J.
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