SOLUTION: I need to create a solution of 40% ethanol and I have 1000ml of 80% ethanol. What is the volume of the second solution ?

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Question 814055: I need to create a solution of 40% ethanol and I have 1000ml of 80% ethanol. What is the volume of the second solution ?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.4*(1000+x)=.8*1000
x=1000
add a thousand ml of something else