See also Ksp constants based solubility at:
https://www.chm.uri.edu/weuler/chm112/refmater/KspTable.html
https://www.solubilityofthings.com/water/ions_solubility/ksp_chart.php
Examples: 5.4 x 10-13 is not soluble and 4.9 x 10-5 is soluble.
https://en.wikipedia.org/wiki/Solubility_chart
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