A \( 42.12 \%(\mathrm{w} / \mathrm{v}) \) solution of \( \mathrm{NaCl} \) causes precipitation o...

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A \( 42.12 \%(\mathrm{w} / \mathrm{v}) \) solution of \( \mathrm{NaCl} \) causes precipitation of a certain sol in 10 hours. The coagulating value of \( \mathrm{NaCl} \) for the sol is
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