Battery Factory

Chemistry help.. Identification of anions and cations?
a chemist collected water sampled, forgot to label:
desalination plant
battery factory
plant nursery
identify tests used to determine water quality.
with NaOH, AgNO3, HCl, NaCl, HNO3
Solve in relation to identification of anions and cations tests. using above solutions, also flame test, conformatory test, AAS
Cations are metals; everything to the left of the Metalloids
ANions are to the right
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