169k views
1 vote
The maximum amounts of lead and copper allowed in drinking water are 0.015 mg/kg for lead and 1.3 mg/kg for copper. Express these values in parts per million.

a) 0.015 ppm, 1.3 ppm
b) 15 ppm, 1300 ppm
c) 15,000 ppm, 130,000 ppm
d) 0.0015 ppm, 0.13 ppm

1 Answer

7 votes

Final answer:

The maximum allowable concentrations of lead and copper in drinking water, 0.015 mg/kg and 1.3 mg/kg, are equivalent to 0.015 ppm and 1.3 ppm respectively.

Step-by-step explanation:

The question asks to convert the maximum allowable concentrations of lead and copper in drinking water, given in mg/kg, into parts per million (ppm). Since 1 mg/kg is equivalent to 1 ppm (because 1 mg is a millionth of a kilogram), the conversion is straightforward. The limit for lead is given as 0.015 mg/kg, so this is directly equal to 0.015 ppm. Similarly, the limit for copper is given as 1.3 mg/kg, which equals 1.3 ppm. Therefore, the correct answers are a) 0.015 ppm, 1.3 ppm.

User Blubberdiblub
by
7.7k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.