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What is the work done by a gas during expansion against a constant external pres

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Question: What is the work done by a gas during expansion against a constant external pressure?

Options:

  1. PΔV
  2. ΔU
  3. Q
  4. 0

Correct Answer: PΔV

Solution: 

The work done by a gas during expansion against a constant external pressure is given by W = PΔV, where P is the pressure and ΔV is the change in volume.

What is the work done by a gas during expansion against a constant external pres

Practice Questions

Q1
What is the work done by a gas during expansion against a constant external pressure?
  1. PΔV
  2. ΔU
  3. Q
  4. 0

Questions & Step-by-Step Solutions

What is the work done by a gas during expansion against a constant external pressure?
  • Step 1: Understand that work done by a gas is related to how much it expands.
  • Step 2: Identify that the work done (W) is calculated when the gas expands against a constant external pressure (P).
  • Step 3: Recognize that ΔV represents the change in volume, which is the final volume minus the initial volume of the gas.
  • Step 4: Use the formula W = PΔV to calculate the work done, where you multiply the constant external pressure (P) by the change in volume (ΔV).
  • Step 5: Make sure to use the correct units for pressure and volume to get the work done in the right units.
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