Dilluting math problem?

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Dilluting math problem?

How many liters of water must be added to 100 L of 30% acid solution to make a 20% acid solution

2007-02-02 10:26:18 · 4 answers · asked by mike 1 in Science & Mathematics ➔ Mathematics

4 answers

I could be mistaken, but I think the person who answered 10 is incorrect. If you have 100L of 30% acid solution, it must contain 30 liters of acid, which would mean you would need a total of 150 liters of fluid to make a 20% solution with 30L of acid. that would require you to add 50L of water.

2007-02-02 10:34:48 · answer #1 · answered by Anonymous · 0⤊ 0⤋

10 L

2007-02-02 10:30:22 · answer #2 · answered by chellebug 1 · 0⤊ 0⤋

100*.3 /(100+x)=.2
30=20+.2x
10=.2x
x=50 leters

2007-02-02 10:35:23 · answer #3 · answered by bruinfan 7 · 0⤊ 0⤋

Math? That is chemistry. I always hated chemistry.

2007-02-02 10:30:26 · answer #4 · answered by Anonymous · 0⤊ 0⤋