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March 26, 2017

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How many moles of bromine are there in a 0.35 mL dichloromethane solution of 10% bromine?

Density of Bromine = 3.10g/mL
Density of dichloromethane = 1.33g/mL

  • Chemistry - ,

    I assume this is percent w/v.
    10% bromine means 10g Br2 in 100 mL soln.
    How much is in 0.35 mL soln =
    10 g x (0.35/100) = 0.035 g Br2.
    Then mols = grams/molar mass.

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