Overview
I'm working on a physics multi-part question and need an explanation and answer to help me learn.
QUESTIONS
- Find the change in entropy if 72.5 g of aluminum, originally at 225oC, is melted. (HINT you need the melting point of aluminum)
- Find the change of entropy of 2.00 mol of a monoatomic ideal gas if it undergoes a process from A to B where TB=TA/2, and VB=3VA.
- A freezer is a Carnot Refrigerator that makes ice at -4.00oC. Its coefficient of performance is 5.50. Also: 220.0 J of heat is extracted from the freezer every cycle.
(a) What is the room temperature outside the freezer?
(b) How much work does the freezer do in a cycle?
(c) How much energy is delivered to the room every cycle. - Assume you have 17 gas molecules in a box. What is the percent of time the box will spend with 7 particles on the left side? (see example at end of the Entropy Statistical Version video)