Answered: 365 ppb of Zinc are found in a doll.…

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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1. 365 ppb of Zinc are found in a doll. What is it’s %(w/w)? 2. A toy was treated that resulted to 500mL solution. What’s the concentration of Lead if 25 micrograms of it was found? State the anser in ppm. 3. A 250mL stock solution of 1.5 M Arsenic was prepared. What is the required volume of the solution if you’re using it to prepare 50mL of 0.75 M Arsenic solution? 4. If the treatment used HNO3 as the solvent, what is the concentration of Cadmium in molality if the amount of the element found in a 250mL solution was 24mg? (The density of Cadmium is 8.7 g/mL.)

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