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08-09-2017
Chemistry

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A chemist weighed out 101. g of mercury. calculate the number of moles of mercury she weighed out

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20-09-2017

0.504 moles First look up the atomic weight of mercury. atomic weight of mercury = 200.59 Then divide the mass of the mercury you have by it's atomic weight 101 / 200.59 = 0.503515 So you have 0.503515 moles of mercury. Round the result to 3 significant digits giving you 0.504 moles.

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