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A certain gas in expanded from (1L, 10 a...

A certain gas in expanded from `(1L, 10 atm)` to `(4L, 5 atm)` against a constant external pressure of `1atm`. If the initial temperature of gas is `300K` and heat capacity for the process is `50J^(@)C^(-1)`, the enthalpy change during the process is: (use: `1L-atm = 100J)`

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