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What volumes of ethyl alcohol and water must be mixed together to prepare 250 mL of 60 percent volume by volume solution of alcohol in water?

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150mL

50mL

100mL

200mL

answer is A.

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Detailed Solution

Volume percent = Volume of alcohol /Volume of solution ×100

60 = Volume of alcohol (x)(250 mL)×100

x =60×(250 mL)100=150 mL

Volume of water =(250-150)=100 mL

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