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24 August, 11:53

A certain amount of a monatomic gas is maintained at constant volume as it is cooled by 50K. This feat is accomplished by removing 400 J of energy from the gas. How much work is done by the gas?

a) 400 J

b) - 400 J

c) zero

d) none of the above

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Answers (1)
  1. 24 August, 15:10
    0
    The correct answer is option a. 400J

    Explanation:

    Hello!

    Let's solve this!

    To know if the work is positive or negative we have to know the following:

    The work is positive when the gas performs (expansion)

    The work is negative when done outside on the gas (compression)

    In this case the work is done by the gas, so it is positive.

    The correct answer is option a. 400J
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