Answer to Question #83638 in General Chemistry for andy

Question #83638
A 3.0kg sample of pond water contains 3.6mg of a pollutant. What is the concentration of this pollutant in ppm?
1
Expert's answer
2018-12-07T03:55:28-0500

Answer on Question #83638, Chemistry/ General Chemistry

A 3.0kg sample of pond water contains 3.6mg of a pollutant. What is the concentration of this pollutant in ppm?

Solution

ppm = mg of solute/litre of solution

m= ρ*V => V=m/ρ

V(pond water) = 3.0 kg/ 1000 kg/m3 = 0.0030 m3 = 3.0 dm3 = 3.0 L

concentartion in ppm = 3.6 mg/3.0 L = 1.2 ppm

Answer: 1.2 ppm

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