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Unformatted text preview: HW2 (Homework) BARAKAT FARRIS CH101, section 003, Fall 2008 Instructor: Lori Petrovich Web Assign Current Score: 4.91 out of 5 Due: Friday, August 29, 2008 11:59 PM EDT Description Title: Atoms, Molecules, Particles, Periodicity, & Coulomb's Law Chapter 1 Early Experiments Sections 1.1 - 1.10 Periodic Table with Element Names Instructions The question submission scoring is as follows: Correct on first submission: full points Correct on second submission: full points Correct on third submission: full points Correct on fourth submission: 90% of points Correct on fifth submission: 80% of points Do NOT press 'submit all questions" when you are finished. This will do exactly as indicated, and submit all questions, reducing your score. The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. 0.33/0.33 points | 1/5 submissions Caffeine: C 8 H 10 N 4 O 2 Consider the molecular formula for caffeine above. Using only whole numbers with no decimal point, 4 mol of caffeine has 32 32 mol of carbon, 16 16 mol of nitrogen, 40 40 mol of hydrogen, and 8 8 mol of oxygen. HW2 http://www.webassign.net/v4cgifbaraka@ncsu/student.pl?m=2... 1 of 9 12/14/08 3:02 AM 2. 0.33/0.33 points | 1/5 submissions No Marks. To determine what portion of the question you have correct, click on question score at the top of the assignment. Be sure to refresh question score after each submission. Identify the type of substance for each the following....
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