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Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011 %Pb by mass. How much of the water (in mL) contains 160 mg of Pb? (Assume a density of 1.0 g/mL.)

Respuesta :

In 145.45 grams of water there are 160mg of 0.0011% Pb.

Solution concentration

To resolve this issue, it is necessary to use the concentration of solutions, which indicates the percentage amount of one solvent or solute in relation to the other.

In the case of the question, we have that Pb is at a concentration of 0.0011%, that is, for every 100 grams of water we have 0.0011 grams of Pb.

So, to calculate the amount of water that we have 160mg of Pb, we will make the following expression:

                                           Pb           H2O

                                            [tex]\frac{0.0011g}{160\times 10^ {-3}g} =\frac{1g}{x}[/tex]

                                            [tex]x = 145.45g[/tex]

So, in 145.45 grams of water there are 160mg of 0.0011% Pb.

Learn more about concentration in: brainly.com/question/7053858

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