The solution of the problem 1.70 кр 1 from the problem

The solution of the problem 1.70 кр 1 from the problem

Task 1.70
In the isothermal expansion of one mole of hydrogen, heat of 4 kJ was expended, while the volume of hydrogen increased fivefold. At what temperature does the process take place? What is the change in the internal energy of the gas, what kind of work does the gas do?