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Question- Calculate the pH at the equivalence point for the titration of 0.140 M methylamine (CH3NH2) with 0.140 M HCl. The Kb of methylamine is 5.0× 10-4.
Provide your answer in scientific notation
A quantity of 11.05 mL of a KOH solution is needed to neutralize 0.3749 g of KHP. What is the concentration (in molarity) of the KOH solution
A first order reaction has an activation energy of 72.4 kJ/mol and a frequency factor (Arrhenius constant) of 1.78 x 1013 sec -1. Calculate the rate constant at 17 oC.
After careful consideration, the student decides to se the method of recrystallization. What should be the characteristics for a good solvent that the student should consider? Identify them by circling those that apply:
What volume of O2, measured at 25C and 1.00atm, is expelled when 425ml of water saturated with O2 is heated from 0 to 25C?
Aluminum has a specific heat of 0.902J/gxC. how much heat is lost when a pieve of aluminum with a mass of 23.984 g cools from a temperature of 415.0 C to a temperature of 22.0 C
Explain the pKa of acetic acid is 4.75. Suppose acetic acid is found in a solution with a pH of 4.75 which of the following. The acid exists predominately in the prorogated form.
Calculate the maximum mass of pure ethanol that can be vaporized in 10 min from a beaker left in strong sunshine, assuming that the surface area of the ethanol to be 50 cm^2
A piece of lithium metal was added to a flask of water on a day when the atmospheric pressure was 757.5 Torr. The lithium reacted completely with the water to produce 250.0 mL of hydrogen gas, collected over the water at 23°C, at which temperature..
Draw the major organic product formed when nitrobenzene reacts with Cl2 in the presence of AlCl3.
If the 3.90 m solution from Part A boils at 103.45 ^\circ {\rm C}, what is the actual value of the van't Hoff factor, i. The boiling point of pure water is 100.00 ^\circ {\rm C} and K_b is equal to 0.512 ^\circ {\rm C}/m
assume that you have 1 2 5 and 10 ml pipets and a 25 ml volumetric flask. describe in detail how you would prepare a
A 44.2 L sample of a gaseous hydrocarbon, measured at 1.00 atm pressure and 25 C is burned in excess oxygen, liberating 2.55x10^3 kj of heat at constant pressure.
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