SOLUTION: Lara, a pharmacist, has 60 mL of an 8% alcohol solution. How Much water should be evaporated so that the solution that remains is 10% alcohol?
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Question 377481: Lara, a pharmacist, has 60 mL of an 8% alcohol solution. How Much water should be evaporated so that the solution that remains is 10% alcohol?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let water evaporated be x ml
...
acid 8% ------60 ml
...
final quantity = 10% ----(60-x)
..
60*8 = 10(60-x)
480=600-10x
10x=600-480
10x= 120
/10
x=12 ml should be evaporated.
...
m.ananth@hotmail.ca
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