Any changes?

Classical Mechanics Level 4

1.0 kg 1.0 ~ \text{kg} helium stored in a container under pressure 10 MPa 10 ~ \text{MPa} is allowed to expand isothermally at temperature 20 20 ∘ C. ^\circ \text{C.} until its pressure drops to the atmospheric pressure 101325 Pa 101325 ~ \text{Pa} . Find the change in entropy for the gas. Assume the helium gas as ideal.

Note: Choose the approximate option.

No change 3400 JK − 1 3400~ \text{JK}^{-1} . 4670 JK − 1 4670~ \text{JK}^{-1} . 10700 JK − 1 10700~ \text{JK}^{-1} . 9500 JK − 1 9500~ \text{JK}^{-1} . 8200 JK − 1 8200~ \text{JK}^{-1} . 6455 JK − 1 6455~ \text{JK}^{-1} . 12000 JK − 1 12000~ \text{JK}^{-1} .

Munem Shahriar by Munem Shahriar , 18, Bangladesh

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