headlines wl "anti-doping" rules put forth by the International Olympic Committee (IOC). Dr. Foley and Mrs. want to make sure that none of the American athletes engage in this behavior. However, some athletes get caught cheating. A drug test performed on one athlete indicated a type of anabolic steroid in his urine. The steroid contained 54.6% Carbon, 9.0% Hydrogen, and 36.4% Oxygen. The true molecular weight of the compound was 528.0 g/mol,

headlines wl "anti-doping" rules put forth by the International Olympic Committee (IOC). Dr. Foley and Mrs. want to make sure that none of the American athletes engage in this behavior. However, some athletes get caught cheating. A drug test performed on one athlete indicated a type of anabolic steroid in his urine. The steroid contained 54.6% Carbon, 9.0% Hydrogen, and 36.4% Oxygen. The true molecular weight of the compound was 528.0 g/mol,

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter5: Gases

Section: Chapter Questions

Problem 5.89PAE: 89 A number of compounds containing the heavier noble gases, and especially xenon, have been...

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Cocaine (C₁₇H₂₁O₄N) is a natural substance found in cocaleaves, which have been used for centuries as a local anestheticand stimulant. Illegal cocaine arrives in the United States eitheras the pure compound or as the hydrochloride salt(C₁₇H₂₁O₄NHCl). At 25C, the salt is very soluble in water(2.50 kg/L), but cocaine is much less so (1.70 g/L). (a) Whatis the maximum amount (in g) of the salt that can dissolve in50.0 mL of water? (b) If the solution in part (a) is treated withNaOH, the salt is converted to cocaine. How much additionalwater (in L) is needed to dissolve it?
Cocaine (C17H21O4N) is a natural substance found in the leaves of the coca plant, which has been used for centuries as a local anesthetic and stimulant. Illegal cocaine arrives in the USA either as a pure compound or as the hydrochloride salt (C17H21O4NHCl). At 25oC, the salt is very soluble in water (2.50 kg/L), but pure cocaine is much less so (1.70 g/L). What is the maximum amount of salt (in gram) that can dissolve in 50.0 mL of water? [1 mark.] When a 25 mL aqueous solution that contains 62.50 g of the salt is treated with NaOH, the salt is converted to pure cocaine. How much water (in liters) is needed additionally to dissolve the formed pure cocaine? Round your final answer off to two decimal points. C17H21O4NHCl(aq) + NaOH(aq) → C17H21O4N(aq) + H2O(l) + NaCl(aq)
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