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Unformatted text preview: Cheung, Anthony – Homework 10 – Due: Nov 18 2006, midnight – Inst: McCord 1 This print-out should have 22 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points Work is 1. potential energy. 2. organized molecular motion. 3. chaotic molecular motion. 4. kinetic energy. 5. heat. 002 (part 1 of 1) 10 points On January 1, 2001, a bookstore had 266,478 booksinstock. OnFebruary1, 2001, thesame bookstore had 257,814 books in stock. What is the value of Δ(books) for the bookstore during that period? Answer in units of books. 003 (part 1 of 1) 10 points A rubber ball resting on a table has energy by virtue of its height above the ground ( E = g m h where g is gravitational acceleration, m is mass and h is height in meters). When the ball falls off of the table, its potential energy is converted to kinetic energy until it hits the floor and stops bouncing. If the first law of thermodynamics is true, where did the energy go? 1. The energy was lost to friction with the air and converted to heat every time it hit the floor. 2. It was converted to kinetic energy and lost. 3. No energy was lost, the ball has the same amount of energy as when it began. 4. The energy was converted back to poten- tial energy. 004 (part 1 of 1) 10 points A property that determines the direction of heat flow is 1. temperature. 2. calorie. 3. combustion. 4. entropy. 005 (part 1 of 1) 10 points If the products of a reaction have a higher energy than the reactants, then the reaction 1. must be spontaneous....
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This note was uploaded on 11/11/2010 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas.
- Fall '07