5 mole of an ideal gas with gamma = 7/5 initially at STP are compressed adiabatically so that its temperature becomes 400^@C. The increase in the internal energy of gas in kJ is

5 mole of an ideal gas with gamma = 7/5 initially at STP are compresse

1.	5 mole of an ideal gas with gamma = 7/5 initially at STP are compressed adiabatically so that its temperature becomes 400^@C. The increase in the internal energy of gas in kJ is
Answer» 21.55 41.55 65.55 50.55 Solution :Here , n=5 , `GAMMA`=7/5 , `T_1=0^@C, T_2=400^@C` `dU=(nR DT)/(gamma-1)` `=(5xx8.31xx(400-0))/((7//5)-1)`= 41550 J = 41.55 kJ

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5 mole of an ideal gas with gamma = 7/5 initially at STP are compressed adiabatically so that its temperature becomes 400^@C. The increase in the internal energy of gas in kJ is

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