Asked by rhonda
How much water should be added to 20oz of a 15% solution of alcohol to dilute it to s 10% alcohol solution?
Answers
Answered by
drwls
Let the number of oz of added H2O be x.
The mass of alcohol in the solution stays the same. Only H2O is added.
0.20*15 = 0.10(20 + x)
Solve for x.
3 = 2 + 0.1x
x = 1/0.1 = 10 oz
The mass of alcohol in the solution stays the same. Only H2O is added.
0.20*15 = 0.10(20 + x)
Solve for x.
3 = 2 + 0.1x
x = 1/0.1 = 10 oz
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