Law of Multiple Proportions
When two elements form more than one compound, the masses of one element combining with a fixed mass of the other are in ratios of small whole numbers.
Formula
Variables
Example
In CO vs CO₂, the oxygen combining with a fixed mass of carbon is in a 1:2 ratio.
Did You Know?
John Dalton used this law in 1803 as direct support for the existence of atoms.
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