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21 April, 01:07

If you wanted to make 12 grams of copper (II) bromide, how many molecules do you need?

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  1. 21 April, 04:44
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    Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles.

    12 g CuBr2 (1 mol / 223.37 g) (6.022 x 10^23 molecules / mole) = 3.24x10^22 molecules CuBr2
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