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 $\Delta U$ of the gas in joules will be :

Question

Dr. Abubacker · Accepted Answer

[Solution] Insulated: q = 0, so $\Delta U = w = -P\Delta V = -2.5 	imes 2 = -5$ L atm $= -505$ J. Answer (3).

Q. 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 $\Delta U$ of the gas in joules will be :

Explanation

Reviewed by Dr. Abubacker

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