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Q 3142145933.     A sample of drinking water was found to be
severely contaminated with chloroform `(CHCl_3)`,
supposed to be carcinogenic in nature. The level
of contamination was `15` ppm (by mass).
(1) Express this in per cent by mass.
(il) Determine the molality of chloroform in the water sample.
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)