Children's toys and jewelry were assessed for their contamination by potentially toxic élements (PTEJ. includes traces of As (74.92 g/mol), Cd (112.4 g/mol), Pb (207.2 g/mol), and Zn (65.39 g/mol) among others. The concentrations of these PTES were determined to characterize the subsequent health risks, and to possibly reinforce better legislation on the manufacturing of these products. A. If 365 ppb of Zn was observed, what is its equivalent in %(w/w)? B. A sample of plastic toy was treated resulting to a 500 ml solution. What is the concentration of Pb in ppm if 25 ug of Pb is found in the sample?
Children's toys and jewelry were assessed for their contamination by potentially toxic élements (PTEJ. includes traces of As (74.92 g/mol), Cd (112.4 g/mol), Pb (207.2 g/mol), and Zn (65.39 g/mol) among others. The concentrations of these PTES were determined to characterize the subsequent health risks, and to possibly reinforce better legislation on the manufacturing of these products. A. If 365 ppb of Zn was observed, what is its equivalent in %(w/w)? B. A sample of plastic toy was treated resulting to a 500 ml solution. What is the concentration of Pb in ppm if 25 ug of Pb is found in the sample?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer A and B
![Concentration of Solutions
Children's toys and jewelry were assessed for their contamination by potentially toxic elements (PTE). This
includes traces of As (74.92 g/mol), Cd (112.4 g/mol), Pb (207.2 g/mol), and Zn (65.39 g/mol) among others.
The concentrations of these PTES were determined to characterize the subsequent health risks, and to
possibly reinforce better legislation on the manufacturing of these products.
A. If 365 ppb of Zn was observed, what is its equivalent in %(w/w)?
B. A sample of plastic toy was treated resulting to a 500 mL solution. What is the concentration of Pb
in ppm if 25 ug of Pb is found in the sample?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5b6cab73-36fc-4a08-bccd-e8ca6adfeb04%2Ffe5c030e-70d7-4adf-b913-c21f67d88529%2Fo5at90r_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Concentration of Solutions
Children's toys and jewelry were assessed for their contamination by potentially toxic elements (PTE). This
includes traces of As (74.92 g/mol), Cd (112.4 g/mol), Pb (207.2 g/mol), and Zn (65.39 g/mol) among others.
The concentrations of these PTES were determined to characterize the subsequent health risks, and to
possibly reinforce better legislation on the manufacturing of these products.
A. If 365 ppb of Zn was observed, what is its equivalent in %(w/w)?
B. A sample of plastic toy was treated resulting to a 500 mL solution. What is the concentration of Pb
in ppm if 25 ug of Pb is found in the sample?
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