an ion composed of more than one atom , atomic groub , positve ion, negative ion, an acid secreted by the stomach, HBr, HCL, acid turns litmus strip to, red, blue, the ion which is responsible for acidic properties is, H+, OH-, the alkaline solution which is poured in the clogged drains like to be , HCL, NaOH, H2o, Nacl.

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