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What volume of 75% alcohol by mass (d=0....

What volume of 75% alcohol by mass (d=0.8 g/`cm^(3)`) must be used to prepare 150cc. Of 30% alcohol by mass `(d=0.9g//cm^(3))`?

A

44.44mL

B

56.25mL

C

67.5mL

D

33.56mL

Text Solution

Verified by Experts

The correct Answer is:
C
Let v mL of alcohol was used.
`(75)/(100)xxVxx0.8=(30)/(100)xx150xx0.9`
V=67.5mL
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