Question

Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following 1) What is the final pressure of the gas in A and B? 2) What is the change in internal energy of the gas? 3) What is the change in the temperature of the gas?

Answer 1

The cylinder is completely insulated from its surroundings. As a result, no heat is exchanged between the system