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Question - Upon analysis, it is determined that a 0.591 g aspirin tablet contains 65.2% ASA by mass. A student dissolves the tablet in hot NaOH, allows the solution to cool, then dilutes to the line in a 250 mL volumetric flask using deionized water. The student then pipets exactly 3.10 mL of the solution into a 100 mL volumetric flask and dilutes to the line with FeCl3 solution. What is the ASA concentration of the final solution?
Please take care to reply the question as mark are evenly granted for each point
At body temperature (98.6F = 37.0C), Kw has the value 2.4X10^14. If the pH of blood is 7.4 under these conditions, what are the concentrations of H3O+ and OH-?
Calculate the potential of a hydrogen ( p= 1.02 atm) electrode in an aqueous solution of HBr (0.05 m ) at 298 K A) assuming ideal solute behavior. B) using the Deby- Huckel equation.
suppose 0.2506g of na2c2o4 isdissolved in 250ml of 1m h2so4. this solution requires 34.7ml of kmno4 solution for
Problem- A mixture of 0.152 moles of C is reacted with 0.117 moles of O2 in a sealed, 10.0L vessel at 500K, producing a mixture of Co and CO2. The total pressure is 0.6879 atm.
determine the ph of 0.25 m hno2 nitrous acid solution it is given that ka4.5 x 10-4?determine the molecular formula of
Classify each reaction and give the name of all the chemical formula involved for each number
The active ingredient in Pepto-bismol is bismuth subsalicylate, C7H5BiO4. Analysis of a 1.500-g sample of Pepto-Bismol yields 346 mg of bismuth. What percent by mass is bismuth subsalicylate. (Assume that ther is no other bismuth containing compou..
The student then adds more water until the solution volume becomes 1.0 L Write the eqn for each large-extent B/L A/B rxn which occurred on making this mixture. Do this by starting with the rxn that involves the strongest B/L A with the strongest B..
Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of H2C2O4 and H2O in the balanced reaction
A solution has a volume of 2.0 L and contains 36.0 g of glucose. If the molar mass of glucose is 180g/mol, what is the molarity of the solution? Answer must be expressed in dimension analysis.
A wastewater disposal well for carrying various wastes at different times is drilled into a formation of limestone (CaCO3), and the wastewater has time to come to complete equilibrium with the calcium carbonate before leaving the formation through..
Calculate the wavelength of the light in nanometers corresponding to this transition. You can use the following values for your calculations: Planck's constant (h) = 6.626x10^-34 Jxs, speed of light (c) = 2.998x10^8 m/s, and 1m=10^9nm.
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