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9 February, 04:41

How many oxygen atoms are in 0.25 calcium nitrate

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Answers (2)
  1. 9 February, 04:57
    0
    The question is Incomplete.

    How many oxygen atoms are in 0.25 mol calcium nitrate?

    Answer:-

    9.0345 x 10^23

    Explanation:-

    The chemical formula for Calcium Nitrate is Ca (NO3) 2

    From the formula we find there are a total of 3 x 2 = 6 Oxygen O atoms in 1 molecule of Calcium nitrate.

    We know from Avogadro's Law that 1 mol of a compound has 6.023 x 10^ 23 molecules.

    Number of moles of calcium nitrate = 0.25

    Number of molecules of Ca (NO3) 2 = 0.25 x 6.023 x 10^23

    = 1.5075 x 10^23

    Number of atoms of O = 6 x 1.5075 x 10^23

    = 9.0345 x 10^23
  2. 9 February, 05:07
    0
    I guess I don't know
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