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    Question

    Which French chemist summarised his experiment in 1806,

    and proved that the mass ratio of elements in a chemical compound is always the same, regardless of the source of the compound?
    A Joseph Proust Correct Answer Incorrect Answer
    B Robert Boyle Correct Answer Incorrect Answer
    C Jacob Berzelius Correct Answer Incorrect Answer
    D John Dalton Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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