We’re being asked to determine the molarity of lead (Pb) in a 9.0-ppb solution. Let’s first define **ppm** and **ppb**.

• **1 ppm means 1 part of solute for every 10 ^{6} parts of the solution**

*in terms of solutions:*

$\overline{){\mathbf{p}}{\mathbf{p}}{\mathbf{m}}{\mathbf{=}}\frac{\mathbf{\mu}\mathbf{g}\mathbf{}\mathbf{s}\mathbf{o}\mathbf{l}\mathbf{u}\mathbf{t}\mathbf{e}}{\mathit{m}\mathit{L}\mathbf{}\mathbf{s}\mathbf{o}\mathbf{l}\mathbf{u}\mathbf{t}\mathbf{i}\mathbf{o}\mathbf{n}}}$

• **1 ppb means 1 part of solute for every 10 ^{9} parts of the solution**

The maximum allowable concentration of lead in drinking water is 9.0 ppb.

Calculate the molarity of lead in a 9.0- ppb solution.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the ppm concept. If you need more ppm practice, you can also practice ppm practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty of*The maximum allowable concentration of lead in drinking wate...*as low difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Sabrina took 4 minutes and 22 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Ghosh's class at GS.