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30 September, 10:39

What makes up a water molecule?

A. two atoms of oxygen and one atom of hydrogen

B. one atom of oxygen and two atoms of helium

C. one atom of oxygen and one atom of hydrogen

D. one atom of oxygen and two atoms of hydrogen

E. two atoms of oxygen and two atoms of helium

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Answers (1)
  1. 30 September, 11:20
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    The answer is d. 2 hydrogen and 1 oxygen

    think about the formula h2o h2 means 2 hydrogen and the one o means one oxygen so that would make the answer d.
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