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Question
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
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Solution
Volume of alcohol = 5.6 ml
Volume of water = 75 ml
So, volume of solution = 75ml + 5.6 ml = 80.6 ml
`"concentration"= "volume of solute"/"volume of solute + volume of solvent"xx100`
`= 5.6/80.6xx100`
= 6.9%
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