The three laws of thermodynamics are written in words below. The of the universe

Question

The three laws of thermodynamics are written in words below. The of the universe constant For any spontaneous process the of the universe increases. The of a perfect crystal at absolute zero (0 K) In equal to zero. Complete the sentenced above using the words energy and entropy where appropriate. Consider the transfer of energy that occurs when a hot marble is dropped into a pot of cold water. What happens when the marble touches the water? Energy is transferred from the marble to the water Energy is transferred from the water to the marble. Energy is not transferred In this process. Energy is transferred from the water to the marble and back to the water If the liquid sample is vaporized (process 1) and then allowed to condense back to a liquid (process 2). which of the following descriptions of the processes is correct? Process 1 is exothermic and process 2 is endothermic Process 1 is endothermic and process 2 is exothermic Process 1 is exothermic and process 2 is exothermic Process 1 is endothermic and process 2 is endothermic If the sample releases 55 kJ of heat and simultaneously does 39 kJ of work, what can we say about the change in energy of the sample? Delta E > 0 Delta E

Explanation / Answer

Q1

I --> the ENERGY of the universe is constnat

II --> fo any spontanous process, the ENTROPY increases

III --> the ENTROPY of a perfect crystal....

Q2

the marble will trasnfer heat to the water, since it is HIGH in temperature

so..

A is the best asnwer

Q3

process 1 --> requires energy to form vapor so it is endothermic... therefore the second process must be exothermic...

choose B

Q4

Q - W = U is the law

so

Q = -55 KJ loses

W = 39 kJ

so

-55 - 39 = U

U = is negative, its losing everywhere

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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