Hwk III - earth’s atmosphere calculate the amount by...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 353 - Homework Set III (Due 10/18/07) Name: 1. (10 points) An inventor claims to have made a perpetual motion machine, and has applied to your firm for a patent. As part of the overall process, the machine is said to adiabatically convert an monatomic ideal gas from 5 atm and 500 K to 3 atm and 100 K. Your boss tells you that this is impossible, and therefore that your firm cannot issue a patent to this lunatic. It is your job to write a document stating the overall impossibility of the process. What should you write? 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2. (10 points) A spherical asteroid (radius 1 mile) comes crashing into the Pacific Ocean, causing massive tsunamis, volcanic eruptions and mass extinctions. Assuming that the as- teroid is made of pure iridium, and attains a uniform temperature of 2000 K in transiting the
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: earth’s atmosphere, calculate the amount by which the entropy of the universe is increased between the time the asteroid impacts the ocean (temperature 60 F) and comes to rest at the sea floor, in thermal and mechanical equilibrium with its surroundings. Make all reasonable assumptions, and look up any data that you might need to solve this problem. 2 3. (10 points) When are the constant pressure and constant volume heat capacities ( C p and C v ) of water precisely equal at 1 atm? 3 4. (10 points) What is the lowest final temperature obtainable when an ideal gas is expanded from 3 atm and 300 K to a final pressure of 1 atm if the heat discharged to the surroundings (which are maintained at room temperature) can be no greater than 200 J per mole of gas processed? 4...
View Full Document

This note was uploaded on 05/10/2008 for the course CH 354 taught by Professor Stanton during the Spring '08 term at University of Texas.

Page1 / 4

Hwk III - earth’s atmosphere calculate the amount by...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online