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Discuss why potassium cyanide, in terms of solubility, makes it such a dangerous substance.
A water sample is found to contain 23ppm iodine(I). If you drank 1399mL of this water, how many moles of Iodine(I) would you ingest
If the concentration of bromide ion in a saturated solution in equlibrium with PbBr2 solid is determined to be .0125M what is the solubility of PbBr2
If you do 1J of work pulling on a rubber band, what amount does the internal energy of the rubber band change
What is the theoretical yield of this friedal-crafts alkylation to make 1,4-di-t-butyl-2,5-dimethoxybenzene
The carbonyl peak of benzaldehyde appears as a very strong and intense peak at 1703 cm -1. Normally the carbonyl peak of an aldehyde appears at 1725 cm -1. Why does the carbonyl peak of benzaldehyde appear at a lower frequency
At this point in the titration the system reches equilibrium and therefore Qsp for silver chromate is equal to Ksp of silver chromate and Qsp for silver chloride is equal to Ksp for AgCl. 1. Cal the equilibrium concentration for the chromate ion [C..
Pepsin is the principal digestive enzyme of gastric juice. A 3.00g sample of pepsin is dissolved in enough water to make 10.0 mL of solution. The osmotic pressure of the solution is found to be 0.213 atm. What is the molecular weight of pepsin
Calculate the pH of rainwater in equilibrium with SO2 in a polluted air mass for which the sulfur dioxide concentration is 1.0 ppm.
Explain a sample of water (H2O) contain 8.75 mol of H atoms. Explain how many moles of O atoms does it contain
In a gas mixture, the partial pressures are nitrogen 430 , oxygen 115 , and helium 235 . What is the total pressure ( ) exerted by the gas mixture?
The I2 that did not react with ascorbic acid is then determined in a thiosulfate reaction. If 40.0mL of 0.4445M I2 was added to a sample containing vitamin C, the unused I2 required 19.05mL of 0.142M S2O32- to react. How many moles of vitamin C we..
Calculate the pH of a solution prepared by adding 20.0 mL of 0.100 M HCl to 80.0 mL of a buffer that is comprised of 0.25 M NH3 and 0.25 M NH4Cl. Kb of NH3 = 1.8 x 10-5.
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