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If Kepler had not discovered that the planets orbit around the sun in an elliptical orbit, I would have thought for a long time but that the planets rotate in around the sun circular.
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If Antonie van Leeuwenhoek had not had the interest to see beyond the eye seen, the first protozoo would not have discovered.
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If Edmund Halley had not observed the sky would not have discovered the periodicity of comets with Halley's Comet
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If Joseph Gay-Lussac had not studied the behavior of gases, you would not have the law by which a gas is proportional expands its temperature (absolute) if the pressure is kept constant (Charles Law) and proportionally increased their pressure if volume remains constant (Gay-Lussac's Law).
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If Humphry Davy had not made a study of the electrolysis of various compounds, would not have discovered and named several pure chemical elements found on the periodic table
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If the synthesis of urea would not carry out would not have been one of the first compounds synthesizing an organic compound through an inorganic compound
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If Kekule had not dreamed of the snake biting its tail, there would be a representative model for the structure of benzene
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If Mendeleev had not posted the periodic table of the elements discovered, it would have taken to discover the order of the elements according to his or their orbital electronegativity.
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If Ernest Rutherford and Marie and Pierre Curie had not investigated radioactive elements, now would not have the use of them for different raw materials and utilization as an energy source.
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If Lewis had not created the atomic model of bonds between electrons, there would be no concept Complexometry
