221- A mixture of water, toluene, table salt, and acetone, in terms of molar ratio, has how many phases? (1) $1$ (2) $2$ (3) $3$ (4) $4$
\textbf{221-} A mixture of water, toluene, table salt, and acetone, in terms of molar ratio, has how many phases?
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(1) $1$ \hspace{2em} (2) $2$ \hspace{2em} (3) $3$ \hspace{2em} (4) $4$
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