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19 June, 23:14

How many moles of oxygen atoms are contained in the following?

(a) 2.41 mol KMnO4

(b) 46.8 mol CO2

(c) 1.10 10-2 mol CuSO4·5 H2O

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  1. 19 June, 23:51
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    How many moles of oxygen atoms are contained in the following? (a) 2.41 mol KMnO4

    2.41 mol KMnO4 (4 mol O / 1 mol KMnO4) (6.022 x 10^23 atoms / mol) = 5.81 x 10^24 atoms O

    (b) 46.8 mol CO2

    46.8 mol CO2 (2 mol O / 1 mol CO2) (6.022 x 10^23 atoms / mol) = 5.64 x 10^25 atoms O

    (c) 1.10 x 10-2 mol CuSO4·5 H2O

    1.10 x 10-2 mol CuSO4·5 H2O (5 mol O / 1 mol CuSO4·5 H2O) (6.022 x 10^23 atoms / mol) = 3.31 x 10^22 atoms O
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