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Ammonia is a gas whose smell we detect in manure as well as in some cleaning solutions, among other things. If the concentration of this noxious gas can be controlled by regulating the pH of the water because only the non-protonated form is volatile.The pKa for the preceding reaction is 9.3. Explain what fraction of the total nitrogen (NH4+ + NH3) is in the volatile form at pH 9.0?
If it takes 8.5 for the concentration of to decrease from 0.90 to 0.45 , how many hours are required for the concentration to decrease from 0.40 to 0.10
If some of the product contained magnesium nitride rather than magnesium oxide, would the experimental % Mg be higher or lower than that expected for pure magnesium oxide. Mg3N2+3H2O=3MgO+2NH3
use the van der waals equation to calculate the pressure of 4.21L CO(g) at 300°C. (a= 1.472 bar L^2mol^-2 and b=0.0395L mol^-1)
What is the temerature in C of gas if the volume is changed to 5.79 L and the pressure is changed to 765 mmHg if the gas originally has a volume of 4.00 L, a temp of 298 K, and pressure of 782 mmHg
Calculate the degree of dissociation (he fraction of molecules dissociated) for the acid in this solution. (You may assume that the mean ionic activity coefficient has a value of 1). (c) From the degree of dissociation, determine the acidity const..
Calculate the molar absorptivities for In- at 454 and 654nm, set up two simultaneous equations, and determine the molar concentrations of HIn and In- in the buffer solutions
For an alloy that consists of 90.1 g copper, 102 g zinc, and 5.92 g lead, what are the concentrations of (a) Cu (in weight percent), (b) Zn (in weight percent), and (c) Pb (in weight percent). The atomic weights of Cu, Zn, and Pb are 63.54, 65.39,..
At 0.0oC, if the volume of air is 1.5 mL and the pressure of the atmosphere that day is 735 mmHg, what is the number of moles of air?
Draw the major organic product formed when bromobenzene reacts with nitric acid in the presence of sulfuric acid
Compare the chemical structure of the nylon polymer that has been prepared to the polypeptide trimer of glycine, the simplest of the naturally occurring amino acids
What one reagent should re-energize the light solution after it has faded? Explain using moles and limiting reagents.
why metals easily lose their electrons and nonmetals gain
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