Sunday, January 13, 2008

Monday January 14th

All right, so Marlia asked me at the end of class on Friday about how to determine the volume for the vinegar and baking soda experiment. At first I thought that I made an error in judgement about your experimental design, but then it dawned on me today. What we planned to do, and I apologize for not making this more clear, is to make an assumption about the volume amount from the gram amount you found. For example, if you found that you lost 0.1 grams of carbon dioxide and the molar weight of carbon dioxide is, for the example here, 44.0 grams, then all you would do is calculate the moles. In this example it is 0.002 moles. Given that an ideal gas has a molar volume of 22.4 L, you can perform dimensional analysis and find what would be the volume for the amount of gas we measured. I hope this makes sense and is not too late for your homework time...and I hope you read this before Monday. Happy calculating!