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If 1000 J of heat is added to a gas and it expands doing 400 J of work, what is
If 1000 J of heat is added to a gas and it expands doing 400 J of work, what is the change in internal energy? (2023)
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If 1000 J of heat is added to a gas and it expands doing 400 J of work, what is the change in internal energy? (2023)
600 J
400 J
1000 J
200 J
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Using the first law of thermodynamics: ΔU = Q - W = 1000 J - 400 J = 600 J.
Questions & Step-by-step Solutions
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Q
Q: If 1000 J of heat is added to a gas and it expands doing 400 J of work, what is the change in internal energy? (2023)
Solution:
Using the first law of thermodynamics: ΔU = Q - W = 1000 J - 400 J = 600 J.
Steps: 5
Show Steps
Step 1: Identify the amount of heat added to the gas, which is 1000 J. This is represented as Q.
Step 2: Identify the amount of work done by the gas during expansion, which is 400 J. This is represented as W.
Step 3: Use the first law of thermodynamics formula: ΔU = Q - W, where ΔU is the change in internal energy.
Step 4: Substitute the values into the formula: ΔU = 1000 J - 400 J.
Step 5: Calculate the result: ΔU = 600 J.
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