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The hydroxide ion has the formula OH−. The solubility-product constants for three generic hydroxides are given...

The hydroxide ion has the formula OH−. The solubility-product constants for three generic hydroxides are given here.

Generic hydroxide Ksp
XOH 2.00×10−8
Y(OH)2 2.80×10−10
Z(OH)3 7.40×10−15

Use these values to answer the following questions.

Part A

The removal of an ion is sometimes considered to be complete when its concentration drops to 1.00×10−6  M. What concentration of hydroxide would cause Y2+ to "completely" precipitate from a solution?

Express your answer with the appropriate units.
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