Problem Set #9 is due Wednesday, October 28, 1998 at the beginning of class.
In our TA Meeting on Wednesday afternoon the TA's pointed out a small error in PS91.b. The phase for Zn should be (s) not (aq). Fix that.
Empirical formulas can be extremely varied. The approach is always the same, find the moles of all the elements in the compound and then determine their ratios. There are many different ratios possible and unless you have done many problems you may make some errors in your determination of an empirical formula. I strongly recommend you practice doing many problems so you feel comfortable with determining the empirical formula.
Be careful handling the nitric acid in laboratory this week.
The A&S WebMaster says the problems have been worked around. So the A&S Grades DataBase should be working. If you have problems let me know. Remember for the most recent, updated, grades check the Plan B link.
I'm having a number of students contacting me about missing class and wanting to turn in problem sets. I will not accept late problem sets! Since at least one problem set (hopefully more) will be dropped there are no exceptions. Problem Sets are due at the beginning of class. If you are going to miss class when a problem set is due, and you are out of town, I will accept a mailed problem set as long as the postmark is the same as the day the problem set is due. Also remember your problem set must be turned in during the lecture session you are enrolled in.
One of the TA's visited me this morning expressing concern about Problem Set #2 which he had completed grading. He asked what he was to do with a student who had copied the answers from another student and turned in the paper. I indicated copying someone else's work and submitting it with your name is a case of academic misconduct and to give BOTH students a zero on the Problem Set. Please...you are encouraged to work together, but write your own answers to the problem on the problem sets. If anyone has questions about this policy please see me.
I've got the Free Tutoring schedule linked. Check it out for times during the day/week when chemistry teaching assistants will be able to answer questions in B023 of the Physical Sciences building.
For information to help solve Problem 2.1 try using the Merck Index which is available in my office and in the Library. I've placed the Library's copy on Reserve. It should be available to checkout for no more than 2-hours beginning late Saturday or early Sunday. The Merck Index provides useful information arranged alphabetically by compound name. Each compound listing has information like physical properties, solubility and reactivity. Some of the information provided for each substance uses abbreviations. Check the front of the Index for a listing of the abbreviations.
I just talked with Barbara Miller in the Library and she indicates that the Internet computers in the Library should have the Shockwave plugin so that you will be able to run the animations which I run in class. However, students can not print from these computers. The PETE computers do not have the plugin for the animations. The best time to use the Library's Internet computers is before 10 a.m. or after 11 p.m.
Remember laboratories are meeting this week. If you missed laboratory last week you will need to view the safety videotape this week. This week is Check-in...do not lose your locker key!
Print your own copy of the CHEM 1215 Syllabus and General Information.
Need a periodic table link? Check this one out. Oh...BTW please memorize the spelling of the first twenty elements in the periodic table, plus some of the common elements with atomic numbers greater than 20.
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