A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 atm from an initial volume of 2.50 L to a final volume of 4.50 L. The change in internal energy of the gas in joules will be [2017]
−500 J
−505 J
+505 J
1136.25 J
(2)
As the container is insulated, thus
Hence,
