TCH 9.1 - Relative Mass • We know atoms react in whole number ratios with one another Ex C(s O 2(g CO 2(g • For the reaction to work you

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Unformatted text preview: Relative Mass • We know atoms react in whole number ratios with one another ▫ Ex C (s) + O 2(g) CO 2(g) • For the reaction to work you need 1 carbon atom for every 1 oxygen molecule • Since atoms and molecules are so small we need to react millions and millions of each to form a noticeable amount of product • Let’s look at some non atom examples • So an equal number of ping pong balls will weigh 1/20 th of an equal number of golf balls. • Problem: • Red jelly beans weigh twice as much as pink ones. If you want an equal number of each and you need 10g of the pink ones, how many grams must you get of the red ones? Atoms and Molecules • Replace the jelly beans with atoms now. • We know we need an equal amount of carbon atoms and oxygen molecules to make carbon dioxide • So how do we know the weight of a single carbon atom and two oxygen atoms? • 1 carbon atom per 2 oxygen atoms • Gives us CO 2 •...
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This note was uploaded on 04/14/2008 for the course CHEM 1305 taught by Professor Mason during the Spring '08 term at Texas Tech.

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TCH 9.1 - Relative Mass • We know atoms react in whole number ratios with one another Ex C(s O 2(g CO 2(g • For the reaction to work you

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