SOLUTION: A solution contains 15% hydrochloric acid. How much water should be added to 50 milliliters of this solution to dilute it to a 2% solution? I need how to solve this problem usi

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Question 995600: A solution contains 15% hydrochloric acid. How much water should be added to 50 milliliters of this solution to dilute it to a 2% solution?
I need how to solve this problem using a quantity rate table, I can solve it once I have the table filled out I'm just having issues determining where each piece of information goes in the table.

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
This is my method:
Let +x+ = ml of water to be added
You end up with the same amount of
acid as you started with
------------------------------
[ ml of acid in solution ] / [ total ml you end up with ] = [ final % of acid ]
+%28+.15%2A50+%29+%2F+%28+50+%2B+x+%29+=+.02+
+7.5+=+.02%2A%28+50+%2B+x+%29+
+7.5+=+1+%2B+.02x+
+.02x+=+6.5+
+x+=+325+
325 ml of water must be added
check:
+%28+.15%2A50+%29+%2F+%28+50+%2B+x+%29+=+.02+
+%28+.15%2A50+%29+%2F+%28+50+%2B+325+%29+=+.02+
+7.5%2F375+=+.02+
+.02+=+.02+
Hope this helps