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14-07-2016
Chemistry

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A chemist prepares a solution of iron(II) bromide FeBr2 by measuring out 0.55kg of iron(II) bromide into a 500.mL volumetric flask and filling the flask to the mark with water.

Calculate the concentration in /molL of the chemist's iron(II) bromide solution.
Round your answer to 2 significant digits

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Lexdesex Lexdesex

15-07-2016

molar mass of ferrous bromide: 215.65
m(FeBr2): 550/215.65 = 2.55moles
this is dissolved in 500mL of water so in 1L of solution there will be 2.55x2 = 5.1mol/L

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