Assuming That the Proposed Aqueous Reactants Are Mixed in Stoichiometric

question 15

Multiple Choice

Assuming that the proposed aqueous reactants are mixed in stoichiometric ratios,and at moderate concentrations,which of the following is least likely to represent an observable (e.g. ,gas evolution or precipitation) reaction?

• A)Ca²⁺ + 2 Cl^- + 2 K⁺ + CO₃^2- → ?
• B)2 Na⁺ + CO₃^2- + 2 HC₂N₃O₂ → ?
• C)H₂S + Cu²⁺ + SO₄^2- → ?
• D)H₂SO₃ + Li⁺ + Cl^- → ?
• E)Pb²⁺ + 2 NO₃^- + 2 Na⁺ + 2 OH^- → ?

Knowledge of needle gauge sizes and their applicability in clinical settings.

Awareness of the transmission risks of serious viral diseases through needlestick injuries.

Understanding of proper disposal methods for used needles and syringes.

Knowledge of the interchangeability and specific uses of tuberculin and insulin syringes.

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