Calculate the change in internal energy of the following system: A balloon is co

Question

Calculate the change in internal energy of the following system: A balloon is cooled by removing 0.659 kJ of heat. It shrinks on cooling, and the atmosphere does 383 J of work on the balloon. Express your answer to three significant figures and include the appropriate units. Submit Part B Calculate the change in internal energy of the following system: A 100.0-g bar of gold is heated from 25 degree C to 50 degree C during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant. Express your answer to three significant figures and include the appropriate units. Submit Part C

Explanation / Answer

A) The heat loss should be q = - 0.659 KJ = -659 J
    The work gain should be w = +383 J
    The change in internal energy E = w + q

                                                       = 383 + (-659)

                                                       = -276 J

B) It indicates that gold bar absorbs 322 J of heat, therefore the internal energy changed by 322 J.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.