SOLUTION: How many grams of water must be added to 2 grams of a 65% iodine solution in order to produce a 42% iodine solution? Round your answer to the nearest tenth.

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Question 573115:
How many grams of water must be added to 2 grams of a 65% iodine solution in order to produce a 42% iodine solution? Round your answer to the nearest tenth.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!

How many grams of water must be added to 2 grams of a 65% iodine solution in order to produce a 42% iodine solution? Round your answer to the nearest tenth.
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2 gm of 65% = 1.3 gm of I
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1.3 gm = 42% of the solution
Total solution = 1.3/0.42 =~ 3.095 gm
Add 3.1 - 2 = 1.1 gm of water