water from various source source wave ratio of hydrogen and oxygen example why is 2 ratio 1 which law is proved by the observation
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gussac law of combining volume
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In order to understand the composition of the compounds, it is necessary to have a theory which accounts for both qualitative and quantitative observations during chemical changes. Observations of chemical reactions were most significant in the development of a satisfactory theory of the nature of matter. These observations of chemical reactions are summarized in certain statements known as laws of chemical combination.
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