Question

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 litre the change in internal energy Delta u of the gas in joule will be

Answer 1

for insulated system
w=-∆u that is q=0.
∆u=-[2.5*10.13*(10)⁴ pas.(4.50-2.50)] jul

Answer 2

"Given:

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 litre.

According to question, we will solve in below manner

For insulated system

w=-∆u that is q=0.

∆u=-[2.5*10.13*(10)⁴ pas.(4.50-2.50)] jul.

Therefore, answer the change in internal energy Delta u of the gas in joule will be -[2.5*10.13*(10)⁴ pas.(4.50-2.50)]."