If at anytime during the semester you show up for laboratory and the TA does not. You do not leave until told to leave by Dr. Cruz or myself. You are to contact Dr. Cruz (PS243) or me as soon as it is evident the TA is AWOL.
After reviewing the answers to Problem Set #4 I changed the answer to PS4.3e. If you have already obtained a copy of the PS4 answers you might want to update this page. Scroll down to the page to get to the problem set section.
If you have a WEB page which you would like to share click here to contact the StudentWEBMASTER.
I've been working on the grades which I have received from the TAs. I do not have all of the TAs reporting yet, but of those I do have the inclusion of the Homework and Laboratory scores effect the course average. The first exam average was 53 (which is a high D). When the other grades earned to date are included the class average moves up to approximately (4 sections are not included) 61 which is right in the middle of the C range. As soon as the remaining grades are transmitted to me I will be able to post grades. This will probably be on Wednesday, October 1.
To estimate your current grade sum your problem set scores, your lab scores and your exam score and divide by the total possible. For an even better estimate of your grade do the following; find the percentage of your homework, laboratory and exam scores. Multiply the homework and lab scores by 0.22 and the exam score by .55 and add those three numbers together. That is the best estimate of your current grade. Check out the sample calculation for Joe Student on how to determine your percentage in the class.
Laboratory next week (Experiment #11: Quantitative Determination of Phosphorus in Plant Food). There is a change in the laboratory procedure. On p. 11-5 it tells you to dry the precipitate on a paper towel under a heat lamp, scrape the dried precipitate into a tared dish and weigh. Instead, you should pre-weigh both a piece of filter paper and a watch glass. Then you can place the precipitate and filter paper on the watch glass and dry them under the heat lamp, cool and weigh.
Remember if your performance is not what you anticipated and
you would like to talk to me drop by my office or see me after class
to set an appointment.
A link to the answers to our first examination is located at
the bottom of this page.
No more mr. niceguy...when it comes to Problem Sets. If your
problem set is not turned in at the beginning of class it will
NOT be accepted. No ifs, ands or buts.
How do you tell if a reaction is an oxidation-reduction
reaction??? If the elemental form of a substance dissappears or
appears in the reaction, or there is a change in the number of oxygen
atoms around another element the reaction is an oxidation-reduction
reaction.
Examples of Oxidation-reduction reactions;
Zn(s) + H2SO4(aq) ----> ZnSO4(aq) + H2(g)
2SO2(g) + O2(g) ----> 2SO3(g)
Examples of reactions that are NOT Oxidation-reduction;
AgNO3(aq) + NaCl(aq) ----> AgCl(s) + NaNO3(aq)
HCl(aq) + NaOH(aq) ----> NaCl(aq) + H2O(l)
Return Examination Policy: Exams will be returned in
laboratory next week. You will have your laboratory period to review
the examination to see if any problems require re-grading. To have
your examination re-graded return to your TA (not to Dr. G) while you
are still in laboratory! Your exam will be check to be sure the
question(s) were graded properly. Check the WEB to view the key and
for comments on how exam was grade.
Problem Set #4 due on Wednesday, October 1st.
Important links for Fall 1997 CHEM 1314
- Announcements for Friday, October
3, 1997
- Announcements for Wednesday, October
1, 1997
- Announcements for Monday, September
29, 1997
- Announcements for Friday,
September 26, 1997
- Announcements for Wednesday,
September 24, 1997
- Announcements for Monday,
September 22, 1997
- Announcements for Friday,
September 19, 1997
- Announcements for Wednesday,
September 17, 1997
- Announcements for Monday,
September 15, 1997
- Announcements for Friday,
September 12, 1997
- Announcements for Wednesday,
September 10, 1997
- Announcements for Friday, September
5, 1997
- Announcements for Wednesday,
September 3, 1997
- Announcements for Friday, August
29, 1997
- Lecture
Notes for Monday, September 29, 1997
- Lecture
Notes for Friday, September 26, 1997
- Lecture
Notes for Wednesday, September 24, 1997
- Lecture
Notes for Monday, September 22, 1997
- Lecture
Notes for Wednesday, September 17, 1997
- Lecture
Notes for Monday, September 15, 1997
- Lecture
Notes for Friday, September 5, 1997, Wednesday, September 10,
1997 and Friday, September 12, 1997
- Lecture
Notes for Wednesday, September 3, 1997
- Lecture
Notes for Friday, August 29, 1997
- Lecture
Notes for Wednesday, August 27, 1997
- The course
syllabus can be found on the Chemistry Department HomePage.
Here are pdf versions of the problem sets. You will need a version of
the
Adobe
Acrobat Reader to read/print these files.
Problem Set #4 Grading Information
Answers to Problem Set #4 Update
Problem Set #5 Grading Information
Answers to Problem Set #5
Here are the answers to the questions on our first examination. Along
with the answers are notes which describe how each question was
graded.
Here is the pdf file for one of my sample CHEM 1314 examination.