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A solution containing 50.0 mL of 0.15 M C2H3COOH is titrated with 0.15 M NaOH. What is the pH of the solution after the addition of 25 mL of NaOH? pKa for C2H3COOH is 4.76.
Which one is pure of the following; Bronze and brass, Sugar, carbon dioxide and water, Soda water and brass, Gasoline
Discuss what you would observe after elution and visualization of a TLC plate having made the following mistakes in carrying out the anaylsis.
What is the velocity of a singly charged benzene ion (m = 78 Da) after acceleration? e = 1.60 x 10^-19 C
Sketch a well behaved wave function in 1-d with the labels I. High probability and high kinetic energy, ii low probability and low kinetic energy, ii high kinetic energy and low probability. Which of these (I-iii) will potential energy be highest
Exactly one-half of the magnesium ions are Mg-28, a beta emitter with a half-life of 21 hours. What is the decay rate of Mg-28 in the solution after 5.50 days? (Assume a density of 1.02 g/mL for the solution)
Methylamine (CH3NH2) is a weak base. In a 0.100 M solution, 6.30% of the base is ionized. What is its Kb
What effect would the incomplete drying of a sample (for example, the incomplete removal of a recrystallization solvent) have on the melting point
A 2.78 L sample of hydrogen chloride (HCl) gas at 2.61 atm and 28°C is completely dissolved in 651 mL of water to form hydrochloric acid solution. Calculate the molarity of the acid solution. Assume no change in volume.
How many grams of dry need to be added to 1.50 of a 0.600 solution of ammonia, , to prepare a buffer solution that has a of 8.59? for ammonia is.
Describes the six possible ratios are in the reaction. Include the formula of the species in the relationship.
The Party Guy, Mr. Balloon, is making animal figures out of long thin balloons that he twists into different shapes. Assume that the balloons are of uniform thickness.
If the pressure exerted on a 100-L weather balloon changes from 1.0 atm to 2.0 atm, what would be the volume of the balloon at the higher pressure? Assume the temperature does not change and tha balloon has no leaks.
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