06-07-2022
Chemistry

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How many H2O molecules are there in 4.5 g of water (see picture)

How many H2O molecules are there in 45 g of water see picture class=

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06-07-2022

answer is B.
number of mole of water = 4.5/18 = 0.25mol
number of h2o molecules = 0.25 x 6.02 x 10^23 to get option B

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