Friday #1

     I have completed the quiz 3 on UT! After completing the 2.5 notes, in class I worked through most of the balancing formula equations practice sheet. On a side note I got the highest grade in my history class on our unit test. This week I learned how learned to balance equations, I also learned Mrs. Gardner's Starbucks order. How to be better at sight reading, and some more vocab in spanish. I plan on studying this weekend in spanish and in chemistry. I've had a very stressful and hectic week. Other wise I need to stay on top of my classes, and just take it day by day.

http://tinyurl.com/9q4l44h

Guaca-Mole!

     I have learned so much about the mole! at first I just thought that it was a concentration of things! like a 6 molar Sulfuric acid.  However it turns out that a mole is simply a unit of measurement, but not in the way you think. More specifically it represents number like much like a dozen, decade or quire would. The number it represents is called Avogrado's  number which is equal to 6.0221415 × 10^23. It really surprised me that the "mole" dates back to the 1800's, and I always just kinda figured it was created by Avogrado in a dark room, but no! it took years of him stuying other scientist to finally come up with it.

Want to know more:
-What is a mole: http://chemistry.about.com/cs/generalchemistry/f/blmole.htm
- History: http://science.howstuffworks.com/avogadros-number.htm



http://youtu.be/zYWsOYOEH0g

Percent Compo-Wha!?!?

Percent composition in it basic form is Part/Whole. Its taking the ratio in a compound, using how much of a compound you have: converting it to g/mol and finally knowing the % of something in a compound.

Here is an example: you have 2.5 grams of H2O2 (Hydrogen Peroxide) find the % of Hydrogen then the weight in g

You need to multiply H2 and O2 by there weight on the periodic table: H2*1=2amu + O2*16=38amu
all together that makes 40amu

2amu/40amu = 0.05 amu * 100 = 5% Easy right? we have the first part of our answer.

2.5g * 0.05 = 0.125g

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