SOLUTION: How many milliliters of water must be added to 10 milliliter of a 30% sulfuric acid solution to make a 15% sulfuric acid solution?

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Question 312540: How many milliliters of water must be added to 10 milliliter of a 30% sulfuric acid solution to make a 15% sulfuric acid solution?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Water is a 0% acid solution.
Let x be the ml of water added.
0%28x%29%2B30%2810%29=15%2810%2Bx%29
150%2B15x=300
15x=150
highlight%28x=10%29
10 ml of water will double the volume and halve the concentration.