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An ideal gas expands from the volume of ...

An ideal gas expands from the volume of `1xx10^(-3)m^3` to `1xx10^(-2) m^3` at 300K against a constant pressure at `1xx10^5 Nm^(-2)`. The work done is ___

A

`-900` J

B

900 J

C

270 kJ

D

`-900` kJ

Text Solution

Verified by Experts

The correct Answer is:
A
`w=-PDeltaV`
`w=-(1xx105 Nm^(-2))(1xx10^(-2) m^3 -1 xx10^(-3) m^3)`
`w=-10^5 (10^(-2) -10^(-3))`Nm
`w=-10^5 (10-1)10^(-3)` J
`w=-10^5 (9xx10^(-3))`J
`w=-9xx10^2` J
w=-900 J
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