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MassPercent

# MassPercent - Substance A” 2.1 Mass ratio • Substance B...

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2.1 Mass percent In a sample of carbon dioxide, 40.95 g are carbon and 109.05 g are oxygen Mass percent of carbon: 27.3% Mass percent of oxygen: 72.7% The mass percents of carbon dioxide are constant in all sample of carbon dioxide Law of Constant Composition

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2.1 Mass ratio Consider two substances, each made of entirely carbon and oxygen Substance A Has 3 g of carbon for every 4 g of oxygen Substance B Has 3 g of carbon for every 8 g of oxygen This suggests: “Substance B has twice the number of oxygen per carbon than

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Unformatted text preview: Substance A” 2.1 Mass ratio • Substance B has twice the number of oxygen per carbon than Substance A • Law of multiple proportions C O C O O This suggests: Particles are “discrete” A B 2.1 Dalton’s Atomic Theory 1. All matter consists of atoms 2. Atoms of one element cannot change into atoms of another element 3. Atoms of one element are all the same; atoms of different elements are different 4. Compounds are a specific ratio of different elements p. 43 in your text...
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MassPercent - Substance A” 2.1 Mass ratio • Substance B...

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