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A gas at constant pressure of 4.5xx10^(5...

A gas at constant pressure of `4.5xx10^(5)Pa` to a gas it is compressed from 10 `m^(3)` to `3.0m^3` on givinig a heat of 800 kJ. The change in internal energy is

A

`5.25xx10^(5)J`

B

`6.75xx10^(5)J`

C

`1.25xx10^(5)J`

D

`3.25xx10^(5)J`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaW=+PDeltaV`
`=4.5xx10^(5)xx1.5`
`=6.75xx10^(5)`
`DeltaQ=800kJ`
`=8xx10^(5)J`
`DeltaU=8.0xx10^(5)-6.75xx10^(5)`
`DeltaU=1.25xx10^(5)J`.
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