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Course: UP Class 11 Chemistry > Unit 1

Lesson 5: Reactions in solutions
Science
UP Class 11 Chemistry
Some basic concepts of chemistry
Reactions in solutions
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Finding concentration of a solution

Google Classroom

Problem

A sample of drinking water was found to be contaminated with trichloroethylene (CA2HClA3). The level of contamination was found to be 10 ppb.
Express this number in percent by mass.
%