homework_9_answers - Grodin, Micah Homework 9 Due: Nov 8...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

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

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

Unformatted text preview: Grodin, Micah Homework 9 Due: Nov 8 2005, 11:00 pm Inst: Sara Sutcliffe 1 This print-out should have 15 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 Consider the graph of the temperature change of the earth. 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 2000 2020 2040 2060 2080 2100 Year Temperaturechange( C) If the average temperature of earth is 15 C in 2000, what does the NOAA model (the line in the graph) predict for the average global temperature in 2080? 1. 17.4 C correct 2. 15.0 C 3. 12.6 C 4. 2.4 C Explanation: 002 (part 1 of 1) 10 points A solid melts. This process is 1. an exothermic chemical change. 2. an exothermic phase change. 3. neither endothermic nor exothermic. 4. an endothermic chemical change. 5. an endothermic phase change. correct Explanation: A liquid has more kinetic energy than a solid; for a solid to melt energy must be added. Melting is an endothermic phase change. 003 (part 1 of 1) 10 points The combustion of a certain amount of methane produces 100 kJ of energy....
View Full Document

This homework help was uploaded on 04/07/2008 for the course CH 304k/305k taught by Professor Sutcliffe during the Fall '05 term at University of Texas at Austin.

Page1 / 4

homework_9_answers - Grodin, Micah Homework 9 Due: Nov 8...

This preview shows document pages 1 - 2. Sign up to view the full document.

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