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Dalton's atomic theory: Page 1 2 3 4 5 6 >>

The law of fixed composition

1 atom C @ 12 u each = 12 u C
2 atoms O @ 16 u each = 32 u O
} 12/32 = 0.375 u C / u O
4 atoms C @ 12 u each = 48 u C
8 atoms O @ 16 u each = 128 u O
} 48/128 = 0.375 u C / u O
8 atoms C @ 12 u each = 96 u C
16 atoms O @ 16 u each = 256 u O
} 96/256 = 0.375 u C / u O
 

Dalton's Atomic Theory
Page 1: Introduction
Page 2: Dalton's assumptions Five steps forward and one step back.
Page 3: Atoms in compounds An "invisible hand" fixes atom ratios in compounds
Page 4: Atoms in reactions Dance of the atoms
Page 5: Learning check Take a quiz on Dalton's Atomic Theory
Page 6: References and resources

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General Chemistry Online! Atoms in compounds

Copyright © 1997-2005 by Fred Senese
Comments & questions to fsenese@frostburg.edu
Last Revised 07/25/05.URL: http://antoine.frostburg.edu/chem/senese/101/atoms/dalton-compounds.shtml