Here’s the shared data from CHM 110 Experiment 3B. These are the ratios of mass product / mass barium chloride dihydrate that you need to complete the table on page 74 and answer the questions on pages 75 and 76.  This is data for the Wednesday lab section (section 2)!

Ratio of (mass product / mass BaCl₂.2H₂O):

• 0.89152
• 0.84770
• 0.84425
• 0.84847

The write-up for Experiment 3B is due at our next lab meeting. If you have any questions about either the calculations or the rest of the write-up, either come by my office or ask here in comments.

Here’s a handout that describes the calculation procedure for this experiment:

[CHM 110 Experiment 3B calculation notes]

I recommend that you use your TI-83 calculator or a spreadsheet to find the standard deviation the lab manual asks you to calculate.

[This post will stay at the top of the page until 2/12/2010.  Scroll down to get current notes, assignments, and announcements!]

CHM 100

Your first test will be on Wednesday, February 10.  This test will cover chapters 1, 2,  and 3 in your textbook.

CHM 110

Your first test will be on Thursday, February 11.  This test will cover chapters 1 and most of 2 in your textbook.  The material at the end of the chapter about chemical equations and balancing will not be on the first test (it will appear on the second).

Note:  A list of polyatomic ions and Greek prefixes will be provided.

CHM 111

Your first test will be on Thursday, February 11.  This test will cover chapters 10, 11 and section 12.4 in your textbook.  In chapter 10, you are responsible for only sections 10.1 – 10.4.  The rest of chapter 12 will appear on the second test.