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23-02-2017
Chemistry

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A flask contains 0.450 mol of liquid bromine, br2. determine the number of bromine molecules present in the flask.

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23-02-2017

So number molecules in the sample = moles x 6.022x10^23 molecules/mole
= 0.450 mol x 6.022x10^23
= 2.71x10^23 molecules

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