Given the balanced equation: Ca+2 (aq) + 2 OH-1 (aq) —> Ca(OH)2 (s) If [Ca+2 (aq)] = 0.80 molar and [OH-1 (aq)] = 1.0 molar before precipitation, what is the concentration of the excess ion after precipitation?

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Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering