Amixture contains 34.5 g of copper, 18.4 g of lead and 12.3 g of silver. State the percentage, by mass,of each type of metalin the mixture and create a variety of conversion factors using them. b. Calculate the mass, in grams, of silver in a 3.04 X 102g sample of this mixture.
Amixture contains 34.5 g of copper, 18.4 g of lead and 12.3 g of silver. State the percentage, by mass,of each type of metalin the mixture and create a variety of conversion factors using them. b. Calculate the mass, in grams, of silver in a 3.04 X 102g sample of this mixture.
Introductory Chemistry: A Foundation
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Author:Steven S. Zumdahl, Donald J. DeCoste
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Problem 12CR: Without consulting your textbook, list and explain the main postulates of the kinetic molecular...
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1) a. Amixture contains 34.5 g of copper, 18.4 g of lead and 12.3 g of silver. State the percentage, by mass,of each type of metalin the mixture and create a variety of conversion factors using them.
b. Calculate the mass, in grams, of silver in a 3.04 X 102g sample of this mixture.
2) A sample of clean air is found to contain 20.45% oxygen gas by volume. How many liters of oxygen gas are present in a 65.0 μL sample of this air?
3) A 500.0 mg pill (i.e. 500 mg/ 1 pill) contains 2.7% by mass of the active ingredient. How many g of the active ingredient would be present in 12 pills?
4) A sunscreen preparation with a density of 2.82 g/mL contains 3.55% by mass zinc oxide (ZnO). Each tube is filled with 185.0 mL of sunscreen (i.e. 185.0 mL/tube).If you are the manufacturer and you use 5.00 lb of ZnO, how many full tubes of the sunscreen would you prepare?
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