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A self contained breathing apparatus use canisters containing gaining potassium superoxide.The superoxide reacts with the co2 exhaled by a person and replaces it with oxygen.
4KO(s) + 2CO2(g)--2K2CO3(s)+3O2(g)
what mass of KO2 in grams is required to react with 8.90-L of CO2 at 22.0 C and 767mm Hg? first calculate the number of moles of CO2 (R=0.08026 L*atoms/ mol*K) find moles of Co2 and mass of KO2 in grams?
A 1.200 gram sample of C7H6O2 was dissolved in 11.42 grams of lauric acid, and it was determined that the freezing point of the lauric acid was lowered by 1.680 Celcius.
Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depression constant for water is .86 °C/m.
How many grams of dry NH4Cl need to be added to 1.80L of a 0.400M solution of ammonia, NH3 , to prepare a buffer solution that has a pH of 8.90? Kb for ammonia is 1.8*10^-5.
sodium 24 has a half life of 15 hours. how much sodium 24 will remain from a 10.0-g sample after 60 hours?
A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. Determine the mole fraction of each component to at least three significant figures.
what is the role of lithium hydroxide in the removal of the carbon dioxide exhaled by astronauts?
A gas is heated from 269 K to 283 K while its volume is increased from 21.5 L to 37.0 L by moving a large piston within a cylinder. If the original pressure was 1.10 atm, what would be the final pressure?
What is the temperature of the sample, in degree celsius? can you please show steps?
3 tons of ethanol are accidentally discharged into a lake. By how much is the biological oxygen demand of this water increased? Assume that all ethanol is transformed into CO2 and assume the lake contains 108 liters of water.
When the epoxide 2-vinyloxirane reacts with lithium dibutylcuprate, followed by protonolysis, a compound A is the major product formed. Oxidation of A with PCC yields B, a compound that gives a positive Tollens test and has an intense UV absorptio..
Atrazine is an herbicide widely used for corn and is a common groundwater pollutant in the corn-producing regions of the United States. The log Kow for atrazine is 2.65.
Olive oil is comprised of 80% oleic acid, CH3(CH2)7CH=CH(CH2)7COOH. How many molecules of acetyl CoA are produced by catabolism of oleic acid
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