The balloon portion of a dirigible contains 5000 moles of helium. Initially, the helium is at T

Question:

The balloon portion of a dirigible contains 5000 moles of helium. Initially, the helium is at T = 15°C and P = 0.95 atm, and is 500 m off the ground (where the atmospheric pressure is also 0.95 atm). The dirigible flies south at a constant height and a slow velocity, and gradually warms to T = 25°C (though the pressure remains constant) (Figure 3-12). How much heat was added to the balloon during the process? Initial Dirigible 5000 moles He; P = 0.95 atm; T = 15C T 500 m Final Dirigible 5000 moles He; P = 0.95atm; T