SOLUTION: how many milliliters of water must be added to 10 milliliters of a 30 percent sulfuric acid solution to make a 15 percent sulfuric acid solution

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Question 1177862: how many milliliters of water must be added to 10 milliliters of a 30 percent sulfuric acid solution to make a 15 percent sulfuric acid solution
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
How do you mean, percent?
Weight per weight, or weight per volume, or volume per volume?
Have you the densities for sulfuric acid solutions?