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Question: What is the charge-to-mass ratio of an ionized hydrogen atom (proton)? Of doubly ionized helium? Would it be difficult to distinguish hydrogen from helium by their charge-to-mass ratios?
The burret has an initial volume of 50mL and a volume of 11.4mL at the equivalence point. Compute the concentration of the sodium hydroxide solution.
What is meant by the primary structure of a protein molecule? How does it differ from the secondary structure of a protein? (2) How are secondary protein structures held together? (3) Discuss the importance of the tertiary and quaternary structures o..
A 25 ml sample of .10M sodium acetate is titrated with .10M HCl. What is the pH after the addition of 35ml of HCl. (Kb of CH3CO2=5.6e-10)
What is the pH of a solution containing 0.24 moles of ammonia and 17.8g of ammonium chloride, NH4Cl. Kb for ammonia is 1.8 times 10, What is the PH of a 0.085M solution of ammoniun chloride. Kb for ammonia is 1.8 times 10
a sample of oxygen is collected in a 206 ml container over water at 15c and the barometer reads 793 torr. what volume
Problem- Imagine that some digestive juices containing the strong acid hydrochloric acid accidently entered the bloodstream through a perforated ulcer. If the blood were well supplied with H?2PO??4, and HPO42? ions, tell what would occur chemica..
Vein material consisting of quartz (G=4.48 g/cc) and Barite (g=4.48 g/cc) has a density of 3.60 g/cc. What is the wt % of barite in the vein. What is the wt % of Ba
What are the steps to follow when calculating the percent ionization of acid in a buffer solution. example) percent ionization of .20 M benzoic acid in pure water and percent ionization of benzoic acid in a solution containing
Explain why the tensile strength decreases while the ductility increases during the annealing process.
Part A: Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person or animal that ingests it. The median lethal dose of KCN for a person weighing 145 lb (65.8 kg ) is 9.29×10-3mol .
Compute the pH at the equivalence point for the titration of 0.20M HCL versus 0.20M NH3.For NH3, Kb=1.8x10
What range of accelerating voltages would be required to cover the mass range between 16 and 625, for singly charged ions, if the field strength is held constant?
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