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Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!