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8 March, 02:40

How many atoms of oxygen (O) are in one formula unit of Mg (NO3) 2?

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  1. 8 March, 03:30
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    The molecular formula indicates the number of atoms of each element in the molecule.

    Oxygen exists as molecules (diatomic molecules). T he fundamental particles that make up a sample of Oxygen are pairs of atoms, rather than individual atoms.

    You can count the number of atoms of each element in a chemical formula by multiplying the coefficient by the subscript, recognizing that those coefficients and subscripts that are not shown are equal to 1. So, in our case there are 6 atoms of oxygen.
  2. 8 March, 05:52
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    We may use the molecular formula of the compound to determine the number of oxygen atoms in one formula unit. The formula unit is:

    Mg (NO₃) ₂

    Here, we can see that there are two nitrate ions in each mole, and each mole of nitrate ion contains three oxygen atoms. Thus, there are 6 oxygen atoms in each formula unit of magnesium nitrate.
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