Gen Chem

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1 Mole equals 602 billion trillion things, it's also called...

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Avogadro’s number

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Law of definite proportions

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A compound always consists of the same elements in the
same proportion by mass

Front

Steps for finding Empirical Formula:

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1. convert the % to grams

1. 2. convert grams to mole

2. 3. Divide all by the smallest value

3. 4. Multiply the results until whole

4. 5. Final results are the subscripts

Front

How to determine Molecular Formula:

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Law of conservation of mass

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States that the mass of the reactants must be equal to the mass of the products in a chemical reactions (facts)

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Theoretical Yield

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amount of product obtained when limiting reagent has reacted

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Actual Yield

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amount of product actually obtained by experiment from a chemical reaction

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Percentage Yield

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Limiting & Excess Reagent

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Limiting - substance that was consumed completely

Excess - substance that was not completely used up

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Organic Compounds

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contains carbon atoms covalently bonded to hydrogen atoms. Also called

"Functional Groups"