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# STOICHIOMETRY

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by

## Kim Richardson

on 30 January 2015

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#### Transcript of STOICHIOMETRY

STOICHIOMETRY
Defined
Mole Ratios
Problems
Essential Question:
What is stoichiometry?
Word Origin:
Stoichiometry comes from the Greek words stoikheion, which means element, and metron, which means to measure.
"To measure elements"
The study of the relationships between the amounts of reactants and products in chemical reactions.
For example:
Notes optional
The Haber Process
Using stoichiometry we can:
Figure out how much reactant is needed to produce a certain amount of product.
28.00 g of N2 react with 6.00 g of H2 to yield 34.00 g of NH3.
Mole Ratio: the relationship between the number of moles of reactants and products in a chemical equation.
Mole ratios are important in "stoich":
Used as conversion factors.
Allow us to convert from one chemical to another.

Similar to mole problems.
Difference: We convert from one substance to another using the mole ratio from the balanced chemical equation.
"Stoy-key-ahm-et-ry"
Notes Optional
Lets practice identifying mole ratios.
Full transcript