Heap-leach extraction involves piling crushed ore into large piles and spraying it with ________________.
A) an alkaline-cyanide solution
B) concentrated salt water
C) high-pressure steam
D) giant sandblasters
E) none of these are correct.
Answer: A) an alkaline-cyanide solution
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If you saw the label "phenylephrine HCl" on a decongestant, would you worry that consuming it would expose you to the strong acid hydrochloric acid, HCl?
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