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If a system absorbs 100 J of heat and does 40 J of work, what is the change in i
If a system absorbs 100 J of heat and does 40 J of work, what is the change in internal energy?
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Q1
If a system absorbs 100 J of heat and does 40 J of work, what is the change in internal energy?
60 J
40 J
100 J
140 J
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Using the first law of thermodynamics, ΔU = Q - W = 100 J - 40 J = 60 J.
Questions & Step-by-step Solutions
1 item
Q
Q: If a system absorbs 100 J of heat and does 40 J of work, what is the change in internal energy?
Solution:
Using the first law of thermodynamics, ΔU = Q - W = 100 J - 40 J = 60 J.
Steps: 6
Show Steps
Step 1: Identify the amount of heat absorbed by the system. In this case, it is 100 J.
Step 2: Identify the amount of work done by the system. In this case, it is 40 J.
Step 3: Recall the formula from the first law of thermodynamics: ΔU = Q - W.
Step 4: Substitute the values into the formula: ΔU = 100 J - 40 J.
Step 5: Perform the subtraction: 100 J - 40 J = 60 J.
Step 6: Conclude that the change in internal energy (ΔU) is 60 J.
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