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A gas expands isothermally at 300 K and absorbs 600 J of heat. What is the work

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Question: A gas expands isothermally at 300 K and absorbs 600 J of heat. What is the work done by the gas? (2023)

Options:

  1. 600 J
  2. 300 J
  3. 900 J
  4. 0 J

Correct Answer: 600 J

Solution: 

In an isothermal process, the work done by the gas is equal to the heat absorbed. Therefore, work done = 600 J.

A gas expands isothermally at 300 K and absorbs 600 J of heat. What is the work

Practice Questions

Q1
A gas expands isothermally at 300 K and absorbs 600 J of heat. What is the work done by the gas? (2023)
  1. 600 J
  2. 300 J
  3. 900 J
  4. 0 J

Questions & Step-by-Step Solutions

A gas expands isothermally at 300 K and absorbs 600 J of heat. What is the work done by the gas? (2023)
  • Step 1: Understand that an isothermal process means the temperature remains constant.
  • Step 2: Recall that in an isothermal expansion, the work done by the gas is equal to the heat absorbed by the gas.
  • Step 3: Note that the problem states the gas absorbs 600 J of heat.
  • Step 4: Since the work done by the gas is equal to the heat absorbed, we conclude that the work done is also 600 J.
  • Isothermal Process – In an isothermal process, the temperature remains constant, and the internal energy change is zero, meaning the heat absorbed by the gas is equal to the work done by the gas.
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