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sdas [7]
3 years ago
12

Calculate the work, w, gained or lost by the system when a gas expands from 15 L to 45 L against a constant external pressure of

1.5 atm. 1 L × atm = 101 J.
Chemistry
1 answer:
marta [7]3 years ago
6 0

Answer:

Work done by the system = 4545 J

Explanation:

The expression for the calculation of work done is shown below as:

w=-P\times \Delta V

Where, P is the pressure

\Delta V is the change in volume

From the question,  

\Delta V = 45 - 15 L = 30 L

P = 1.5 atm

w=-1.5\times 30\ atmL

Also, 1 atmL = 101 J

So,  

w=-1.0\times0.75\times 101\ J=-4545\ J (negative sign implies work is done by the system)

<u>Work done by the system = 4545 J</u>

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