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Atoms and Molec...

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  • Question 1
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    The mass percentage of hydrogen (H) in water is

  • Question 2
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    The ratio of H:O by mass in water is

  • Question 3
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    The indivisibility of atom was proposed by

  • Question 4
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    Copper reacts with oxygen to form two oxides, Cu2O and CuO. The ratio between the masses of copper which react with a fixed mass of oxygen is

  • Question 5
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    The modern atomic symbols were proposed by

  • Question 6
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    The mass of one Avogadro’s number of N atoms is equal to

  • Question 7
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    An atom is the

  • Question 8
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    The mass of sulphur dioxide that will contain 6.023 x 1022 molecules is

  • Question 9
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    The number of gram-molecules of O2 in 6.023 x 1024 CO molecules is

  • Question 10
    1 / -0

    Which of the following is a binary compound?

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