Category Archives: CHM 110 Class Notes Sections 1 and 2 (Spring 2013)

CHM 110: Shared data for Experiment 3B (Section 1, Thursday)

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 72 and answer the questions on pages 73 and 74 This is data for the Thursday lab section (section 1)!

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

  • 0.84868
  • 0.84921
  • 0.84715
  • 0.84784
  • 0.84893
  • 0.85030

The write-up for Experiment 3B (pages 69-74) 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:  (It’s the same one that was on your desk when you came in to the lab.)

[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.

Warning:  There’s a possibly confusing typo on page 74 of the 10th edition lab manual.  In the chart in the middle of the page, barium chloride monohydrate is incorrectly given the formula BaCl2.H2O4. The correct formula is BaCl2.H2O

CHM 110: Shared data for Experiment 3B (Section 2, Wednesday)

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 72 and answer the questions on pages 73 and 74 This is data for the Wednesday lab section (section 2)!

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

  • 0.85349
  • 0.85005
  • 0.85093
  • 0.84916
  • 0.84966
  • 0.84975

The write-up for Experiment 3B (pages 69-74) 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:  (It’s the same one that was on your desk when you came in to the lab.)

[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.

Warning:  There’s a possibly confusing typo on page 74 of the 10th edition lab manual.  In the chart in the middle of the page, barium chloride monohydrate is incorrectly given the formula BaCl2.H2O4. The correct formula is BaCl2.H2O