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20 February, 19:48

Determine the number of formula units of Cr (ClO2) 3 and moles of Oxygen contained in 6.85 moles of Cr (ClO2) 3

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  1. 20 February, 20:30
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    The formula units of Cr (ClO2) 3 that are in 6.85 moles of Cr (Clo203 is 4.1237 x10^24 formula units

    calculation

    the formula units are calculated using of Avogadro's law constant

    that is according to Avogadro's law 1 mole = 6.02 x10 ^23 formula units

    6.85 moles=? formula units

    by cross multiplication.

    = (6.85 moles x 6.02 x10^23 formula units) / 1 mole = 4.1237 x 10 ^24 formula units

    The moles of Oxygen contained in 6.85 moles of cr (ClO2) 3 is 41.1 moles

    calculation

    moles of oxygen = number of oxygen atom in Cr (ClO2) 3 x 6.85 (moles of Cr (ClO2) 3

    calculate the number of oxygen atoms that are in Cr (ClO2) 3

    that is 2 x 3 = 6 atoms of Oxygen.

    moles is therefore = 6 x 6.85 moles = 41.1 moles
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