-Georgia K-
Homework:
Due today: Predicting Products sheet
Reactions lab (for those in class Thursday)
Due tomorrow: Mole-Mole Stoich sheet
What did we learn about today?
Stoichiometry
What is it?
- The calculation of the quantities of chemical elements or compounds involved in chemical reactions.
- The branch of chemistry dealing with relationships of combining elements, especially quantitatively.
Stoichiometry is basically the art of finding how much of an element to use in order to cause a chemical reaction, based on the ratios given in a balanced equation.
Application: Sample #1 (from notes)
Equation: CH4 + 2O2 > 2H2O + CO2Question: How many moles of CH4 are needed to make 13 moles of water?Set Up (it's just like a conversion- so easy!): 13 φ H20 x 1φCH4
---------- = 6.5 φ CH4
2 φ H2O
Remember.. molar ratio = φ wanted
-------------
φ given You get the information from given balanced equation!
Also in class today...
Mr. Lieberman shot a cannon using a chemical equation- science is cool! I don't have any footage though, sorry.
NEXT SCRIBE (DRUM ROLL PLEASE) .........
YASMEEN M.
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