Update for 4/17/08

To my students,

here is the update for today:

Regent Chemistry 2:
• HW #28 (Due tomorrow): Holt - Read pp. 626-631; Do p. 631 Problems #1, 2, 3, 9
• Unit Exam the week after spring break.

Earth Science 2:
• Here is today's lab data for plotting the graphs for your lab. #25 write-up (for all periods). Remember, Vertical axis is the dissolution time, Horizontal axis includes 3 different points: Tablet, 4-pieces, and Powders for today's experiment. For each group, plot the 3 points and draw a line through them. Use 1 color for room temp (18 oC - 24 oC), and a different color for higher temperature range (30 oC - 40 oC). If there is too much temperature difference (> 1 or 2 oC) within a group's data, I would suggest you drop that set of data (it would be difficult to interpret).
• Lab. #25 write-up is due tomorrow. Make sure you answer all the questions and do the plot.

Dr. Liu