The Combined Gas Law

Answers to Yesterday's Homework

First thing in class today Mrs. Friedmann checked in our homework and went over the answers. The answers are as follows:

1) .75 L
2) 27 degrees Celsius
3) .12 moles
4) a) .021 moles
    b) 120 g/mole (divide the mass of freon by the number of moles of freon)
5) .0560 moles
6) 240 K or -33 degrees Celsius (either would be acceptable)
7) 58.1 moles
8) 1.88 moles
9) 3.42 minutes (this problem was just for fun and will not be on any exams)
    Work: 1.72 * 10^-4 moles O2 * 1 h             * 1000007 cockroaches = 2.01 moles O2
               1 cockroach * h               60 minutes

Combined Gas Law Notes

Next, we took notes on the combined gas law. Mrs. Fridmann's notes can be found here: http://gbs-moodle.glenbrook225.org/moodle/file.php/12015/1314_Unit_5/Unit_5_Notes/11.18_Class_Notes.pdf

Chemistry Demos

Finally, at the end of class we watched Ms. Friedmann show us some neat chemistry demos. It's too bad if you missed them, but (like videos of farting cats and Hollywood celebrities) they can both be found on the internet.

Homework

Tonight's homework is the "Gas Laws" handouts. We did the first one in class. It looks like this:

Good luck and have a good night!

The next blogger will be Lauren B.