Do it for the band!

For those of you that were in class today and those of you that were not, this post has something for all of you. First, a VodCast showing the solution to the problem given in class on Thursday, October 21st has a link and file on today's date on the AP Chemistry calendar. You are asked to view the solution to problem #2 from the 2007 AP Chemistry Test Form B. To offer up extra incentive to view the Vodcast, there will be a quiz given the last 20 minutes of class on Monday, October 25th over the material covered on the 1999 and 2007 test. The topics covered will be the Bohr model of the atom and calculations associated with the Bohr model. The topic of bond energy will also be incorperated. To give those of you a little prize for reading the blog, any student that writes "YABBA-DABBA-DOO" across the top of his or her quiz will get extra credit on the quiz.

Also on the calendar is a link and file for the Power Point for Chapter 6 if you would like to download it. I would suggest that everyone read sections 4 through 8 of Chapter 6. Hopefully everyone has some recall of electron configurations from the 1st year course.

Finally, I want everyone on Saturday to celebrate the greatest of little known holidays. On Saturday, October (10th month of the year) 23rd, from 6.02 a.m. to 6.02 p.m., please join me in celebrating MOLE DAY!! We will have a belated celebration on Monday. I will bring treats to class. Have a good weekend.

Gravimetric-Titration Lab

So you can solve for a percent error / difference on your lab, the concentration of barium hydroxide was 0.0723 M. Also, in case you forgot to write down the molarity of the sulfuric acid solution, the concentration was 0.119 M. Your lab reports will be due on Tuesday, October 19th, 2010. Remember, on Monday, October 18th, you will be having a quiz over the analysis and calculations associated with the lab.

Calorimetry Solution and Two More Problems

Below are the two problems (Calorimetry #1 and #2) that I would liked solved before class tomorrow, Thursday, October 7th, 2010. Below the two problems is the calorimetry problem presented in class and the solution to that problem.