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10 December, 02:26

What is the simplest formula for a compound containing 0.50 mol na, 0.50 mol s, and 0.75 mol o?

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  1. 10 December, 02:31
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    We need to get the mole ratio between the elements. To do this, we will divide by the the smallest number of moles given as follows:

    0.5 mole of Na / 0.5 = 1

    0.5 mole of S / 0.5 = 1

    0.75 mole of O / 0.5 = 3/2

    Now, we need to get rid of the fractions. To do this, we will multiply all the ratios by 2:

    Na = 1 x 2 = 2

    S = 1 x 2 = 2

    O = 3/2 x 2 = 3

    So, in the simplest formula, the ratio Na:S:O is 2:2:3

    This can be written as: Na2S2O3 which is known as sodium thiosulphate.
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