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You begin with 10 ml of 2% acetic acid, and you add 90 ml of water. We will call the resulting solution "dilution#1". What is its concentration?



You then repeat the dilution exactly, using 10ml of Dilution #1, adding 90 ml of water. We will call the resulting solution "Dilution #2". What's it concentration?



You then repeat the dilution exactly, using 10 ml of Dilution #1, adding 90 ml of water. We will call the resulting solution "Dilution#3" What's it concentration?



WHat is this progression called?

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