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Estimate the amount of work done by an i...

Estimate the amount of work done by an isothermal expansion of an ideal gas at a temperature T, from a state of initial pressure `P_(1)` to final pressure `P_(2)` :

A

`n RT ln ( P _(1) // P _(2))`

B

`n RT l n ( P _(1) // P _(2))`

C

`n RT ( P _(2) // P _(1))`

D

Zero

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The correct Answer is:
A
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