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Hi, Experts. I need help in this question. ======================== A balloonist is preparing to make a...

Hi, Experts. I need help in this question.
========================

A balloonist is preparing to make a trip in a helium-filled balloon. The trip begins in the early morning when the temperature is 15 ̊C. By midafternoon, the temperature has increased to 30 ̊C. detail calculations in questions below.

Assuming the pressure remains constant at 1.00 bar, for each mole of helium, calculate:

(a) the initial and final volumes

(b) the change in internal energy, ∆E [Hint: Helium behaves like an ideal gas]

(c) the work (w) done by the helium (in J)

(d) the heat (q) transferred (in J)

(e) ∆H and ∆S for the process (in J)

(f) Explain the relationship between the answers to (d) and (e)

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Answer #1

-74 = 30 3 K. Pi 8, 314x288 lo -2-39X10 レ 3 x 8.314イ15

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