Company A and B are suppliers of bottled water. Company A gets its water supply from Rio Cobre located near the Windalco Alumina Plant while Company B gets theirs from Rio Grande

in Portland. Researchers have concerns that the rivers are contaminated with chloride ions and

sulphate ions. Determine if their concerns are valid.

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Explanation:

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answer; i believe that the correct answer is (a) potassium(k)