Question

In a thermodynamic process, the pressure of a fixed mass of gas is changed in such a manner that gas molecules give out fifty joules of heat and twenty joules of work is done on the gas .Then final internal energy becomes thirty joules , what was initial internal energy of gas in joules​

Answer 1

Answer:

the initial internal energy is 40 joules

by using formula first find the change in internal energy and then find initial internal energy