The chemical formulas of $A$,$B$,and $C$ are:
$A + Na_2CO_3 \to B + C$
$A \xrightarrow{CO_2} \text{Milky cloud}, C$
$A + Na_2CO_3 \to B + C$
$A \xrightarrow{CO_2} \text{Milky cloud}, C$
- A$A = Ca(OH)_2, B = NaOH, C = CaCO_3$
- B$A = NaOH, B = Ca(OH)_2, C = CaCO_3$
- C$A = NaOH, B = CaO, C = CaCO_3$
- D$A = CaO, B = Ca(OH)_2, C = NaOH$
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