Oxygen mask for producing O2 in emergency situations contain potassium superoxide, KO2 . It reacts with CO2 and H2O in inhaled air to produce oxygen: 4KO2 (s) + 2H2O(g) + 4CO2 (g) ------- 4KHCO3(g) + 3O2(g) . If a person is wearing such a mask exhales 0.702 g/min. How many grams of KO2 are consumed in 25 min?

Oxygen mask for producing O2 in emergency situations contain potassium superoxide, KO2 . It reacts with CO2 and H2O in inhaled air to produce oxygen: 4KO2 (s) + 2H2O(g) + 4CO2 (g) ------- 4KHCO3(g) + 3O2(g) . If a person is wearing such a mask exhales 0.702 g/min. How many grams of KO2 are consumed in 25 min?

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 101AE: This year, like many past years, you begin to feel very sleepy alter eating a large helping of...

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This year, like many past years, you begin to feel very sleepy alter eating a large helping of Thanksgiving turkey. Some people attribute this sleepiness to the presence of the amino acid tryptophan in turkey. Tryptophan can be used by the body to produce serotonin, which can calm the brains activity and help to bring on sleep. a. What mass in grams of tryptophan is in a 0.25-lb serving of turkey? (Assume tryptophan accounts for 1.0% of the turkey mass.) b. What mass in grams of tryptophan is in 0.25 quart of milk? (Assume tryptophan accounts for 2.0% of milk by mass and that the density of milk is 1.04 kg/L.)
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A website promoting the use of alternative energy vehicles and hybrid technologies claims that, "A typical automobile in the USA uses about 4040 gallons of gasoline every month, producing about 750 lbs of carbon dioxide." To determine the truth of this statement, calculate how many pounds of carbon dioxide are produced when 40.0040.00 gallons of gasoline are subjected to complete combustion. Assume that the primary ingredient in gasoline is octane, C8H18(l),C8H18(l), which has a density of 0.703 g/mL.
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Aqueous hydrobromic Acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous sodium bromide (NaBr) and liquid water (H2O). Suppose 1.6g of hydrobromic acid is mixed with 0.464g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
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