My Colleagues in the TRiO Program asked me to post the following announcement.
Tonight is our Marino’s Night for TRiO at Jackson College. We will receive 10% of the proceeds from orders placed between 5 – 8 if you say Jackson College. Marino’s is on Horton Road, phone # 783-1433. Please spread the word!
You can get more information about the TRiO program at JC here.
There is a new problem set for Chapter 6 posted on the CEM131 page. This set deals with balancing, redox, and molar mass conversions. The answers are posted outside my office.
I got the first set of problems ready for you on the Course Page.
My apologies. I have to take our family dog in for an emergency. I will not make morning office hours. Class will be as scheduled.
I apologize, I am still working on the practice page. Unfortunately my disease flared after my flu vaccine late last week and I have spent the weekend in bed. Again, my apologies.
I do have the exams graded, but need something at my office to make the PDF. The median was 68.5% and the high was a 93%, so the curve was 6%.
The grades for Exam 2 are done, along with class grades. The morning section (CEM131-01) had a class median of 70.5%, so got a 4 point curve. The afternoon section (CEM131-04) had a class median of 79% and therefore no curve. Having said that, the scores were much more widely distributed in the morning section than the afternoon section. There are some other factors that may be resulting in the afternoon section having a higher median that I may need to address on the next exam.
Be sure and start reading through the next chapter in the text, Compounds and their Bonds.
The grades for the CEM131 exam are delayed a bit. I noticed an error in how the scantron was reading the forms, so I have to go back to originals and check them by hand. They should be done this evening.
So the radiation question got to everyone. Hopefully you saw that there were two questions in there. The first (two points) was a simple decay equation for Iodine-131. The second had a problem. I went back through the second problem and noticed that the wording was kind of poor and led to some unclear meanings, which is where the issue happened. Of course the first few times I looked at it I read it like I intended it to sound and it was only as I was working it out on the answer key I noticed the issue. I’ll give everyone the three points for that part of the problem.
I thought I mentioned this in both classes but I guess I didn’t. The problems for this unit are pretty much like the material in the book, so I didn’t post any practice problems.