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One mole of an ideal monatomic gas is he...

One mole of an ideal monatomic gas is heated at a constant pressure from `0^(@)C` to `100^(@)C`. Then the change in the internal energy of the gas is (given `R = 8.32 J cdot mol cdot k^(-1))`

A

`0.83 xx 10^(3) J`

B

`4.6 xx 10^(3) J`

C

`2.08 xx 10^(3) J`

D

`1.25 xx 10^(3) J`

Text Solution

Verified by Experts

The correct Answer is:
D
Change in internal energy,
`Delta U = nC_(v)(T_(f) - T_(i)) = 1 xx 3/2 R xx 100`
`= 1 xx 3/2 xx 8.32 xx 100 = 1.25 xx 10^(3) J`.
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Knowledge Check

  • A sample of ideal gas (gamma=1.4) is heated at constant pressure. If an amount of 100 J heat is supplied to the gas, the work done by the gas is

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