Today's Lesson: All about moles!

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Today we learned about how to use mole measurements to find other units of molecules. We used the mole road map to help us in example problems during class that dealt with mass, representative particles, and moles. We didn't learn how to convert to gas measurements yet, but so far I feel pretty good about this lesson. To solve a problem, you just have to figure out what you are coverting from and what you are trying to get to. Then, you just use metric conversions to move from one unit to the next.
Step 1: Figure out what unit you are in and what you have to convert to. (ex. moles--> mass)
Step 2: Convert
Step 3: Simplify looking at sig figs
For example:
How many atoms are in 1.20 x 10^25 moles of Phosphorous?
1) You are converting from moles to atoms
2) (1.20*10^25 mol P)*((6.02*10^23 atom P)/(1 mole P)
3) =7.22*10^48 atom P

*****Hints*******

• When simplifying conversions in a calculator, use the EE button instead of the carrot button. EX: If the problem was (8.9*10^-8g Au)*((1 mole Au)/196.97g Au) you would type (8.9*10[EE]-8)/196.97)
• Put the same unit on opposite sides when converting, so that they cancel EX: moles to grams (moles)*(grams/moles)= grams because the moles cancel out

Crescentok is a good website to help understand the concept of moles
Visionlearning is a quick quiz you can take to test your knowledge