A sample of drinking water was found to be contaminated with C C l_{4}. The level of contamination was 8.5 {ppm} by mass. (Molecular mass of {CCl}_{4}=153.18 {g} \cdot {mol}^{-1} ) (i) Calculate the contamination level in mass percent. (ii) Calculate the contamination level in molality

Correct Answer is : (i) 8.5×10−4%; (ii) 0.55×10−4m

(i) 0.85 \%; (ii) 85 \times 10^{-4} {m}

(i) 8.5 \times 10^{-4} \%; (ii) 0.55 \times 10^{-4} {m}

(i) 85 \%; (ii) 85 \times 10^{-4} {m}

AP EAPCET 3 Sep 2021 Shift 1 Paper

Question : 133 of 160

Marks: +1, -0

A sample of drinking water was found to be contaminated with CCl4. The level of contamination was 8.5ppm by mass. (Molecular mass of CCl4=153.18g⋅mol−1 ) (i) Calculate the contamination level in mass percent.
(ii) Calculate the contamination level in molality

(i) 0.85%; (ii) 85×10−4m
(i) 8.5×10−4%; (ii) 0.55×10−4m
(i) 85%; (ii) 85×10−4m
(i) 8.5%; (ii) 55m

Validate

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