# HW1 - HW1...

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HW1 (Homework) BARAKAT FARRIS CH101, section 003, Fall 2008 Instructor: Lori Petrovich Web Assign Current Score: 4.89 out of 5 Due: Wednesday, August 27, 2008 11:59 PM EDT Description Title: Stoichiometry Chapter 1 Early Experiments Sections 1.4-1.5 Periodic Table Dr. Petrovich's Stochiometry Worksheet (An attempt to explain stoichiometry in 4,000 words or less) 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. 0.38/0.38 points | 1/5 submissions How many moles of molecules and atoms are in a 2.7 g sample of CH 4 ? Use the following atomic masses: C=12, H=1 .16875 0.169 mol molecules .84375 0.845 mol atoms 2. 0.38/0.38 points | 2/5 submissions HW1 http://www.webassign.net/v4cgifbaraka@ncsu/student.pl?v=20. .. 1 of 6 12/14/08 3:02 AM

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How many moles and grams of carbon are present in 19.7 g of aspirin, C 9 H 8 O 4 . Use the following atomic masses: C=12, H=1, O=16 .985 0.99 mol C 11.82 11.88 g C 3. 0.38/0.38 points | 2/5 submissions A sample of N
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## This note was uploaded on 01/25/2011 for the course CH 101 taught by Professor Bigham during the Spring '08 term at N.C. State.

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HW1 - HW1...

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