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You are given very little samples of two amines, A and B. You are tell that one sample is 2-methyl-2-heptanamine as well as the other is N-ethyl-4-methyl-2-pentanamine. You perform a mass spectral analysis and determine that Sample A has a base peak at m/e = 72 as well as Sample B has a base peak at m/e = 58. For alkyl amines such as A and B, base peaks result from cleavage alpha to the N atom. Allot structures to A and B. Define how you arrived at your answer.
Calculate the total pressure if the volume of the reaction container is then (i) doubled; or (ii) reduced 7-fold.
Identify each half reaction as oxidation or reduction; mark which reaction occurs in anode and which in cathode. Write the chemical equation describing the spontaneous cell reaction (The overall reaction)
A student tried this identical procedure with a slight modification on a gel antacid. The student dissolved 3.00 mL in 25.00 mL of a standardized HCl solution containing 1.727 *10^-2 mol of HCl. The back titration of the excess HCl required 4.62 m..
Air containing 1 mass % water is humidified by adding water. If air, dry basis, flows into the humidification process at 957.2 lb/hr and water flows at 0.7 cubic ft per hour, what is the mass fraction water in the humidified air
If a 0.135g sample of NaCl were placed on an ion-exchange column in the H+ form and the eluate titrated with 0.1231 M NaOH, what volume of the NaOH solution would be required to reach a phenolpthalein end point
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation).
Calculate the pH during the titration of 34.5 mL of 0.507 M triethylamine, (C2H5)3N with 0.148 M HCl after 13.0 mL of the acid have been added. Kb of triethylamine = 5.2 x 10-4.
How many milliliters of N2 (measured at 0.740 atm and 100. °C) could be formed if the following reaction occurs? 4NH3(g) + 3O2(g) 2N2(g) + 6H2O(g)
What would the internal energy of the gas be if it were compressed to .10 m^3 while the pressure was held constant?
Express you answer as a chemical equation. Identify all of the phases in your answer.
Rank the following bonds according to increasing polarity.
For the reaction 2IBr (g) goes to I2 (g) + Br2 (g), Kc=280 at 150.0 degree celcius. Suppose that 0.900 mol IBr in a 2.00-L flask is allowed to reach equilibrium at 150.0 degree celcius, what are the equilibrium concetrations of I2, Br2, and IBr
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