## Filters

Q&A - Ask Doubts and Get Answers
Q

# A sample of drinking water was found to be severely contaminated with chloroform CHCl_3 supposed to be a carcinogen.The level of contamination was 15 ppm (by mass):(i)express percent mass

2.9  A sample of drinking water was found to be severely contaminated with chloroform $\inline (CHCl_{3})$ supposed to be a carcinogen. The level of contamination was $\inline 15\; ppm$ (by mass):

(i) express this in percent by mass

Views

We know that 15 ppm means 15 parts per million.

Required percent by mass :

$= \frac{Mass\ of\ chlorofoam}{Total\ mass}\times100$

$= \frac{15}{10^6}\times100 = 1.5\times10^{-3}\%$

Exams
Articles
Questions