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A 0.1019g portion of an aspirin tablet was dissolved in sufficient water to prepare 1.000L of solution. A pipet was used to transfer 10 mL of the solution to a 100 mL volumetric flask. A 2 mL portion of 4 M NaOH (aq) was added to the flask, and the resulting solution was diluted to the mark with water. The fluorescence of the diluted sample solution was found, by the working curve method, to correspond to a salicylate ion concentration of 4.80 x 10^-5 M. Calculate the % acetylsalicylic acid in the aspirin tablet.
Construct the MO diagram for planar BH3 and for pyramidal BH3. Based on your MO diagram , why is BH3 planar?
Calculate how many milliliters of 0.100 M HCl shoule be added to how many grams of sodium acetate dihydrate (NaC2H3O2 x 2H2O) at 5 degrees C to prepare 250.0 mL of a 0.100 M buffer at a pH=5.00. At 5 degrees C
Polyunsaturated fatty acids (PUFAs) have several carbon-carbon double bonds as present in beta-carotene
For the decomposition of 10.9 Pa azomethane, CH3N2CH3, at 600 K the partial pressure is found
In a laboratory experiment, students synthesized a new compound and found that when 14.10 grams of the compound were dissolved in 208.0 grams of ethanol, the solution began to boil at 78.9510C
A 15ml aliquot of this solution was the diluted to 500ml of water. Calculate the final molarity
Calculate the concentration of NO3- ion remaining in solution.
You dissolve 12.6352 g of potassium iodide in water and bring the volume of solution to 250.0 ml. What is the molar concentration of KI and what volume of 0.0436 molar hydrochloric acid is required to react with 30.0 ml of 0.0278 molar LiOH?
The objective is to implement a menu-based system for Bank Accounts in order to simulate a very simple banking system. Many structures have to be declared to manage bank accounts.
50.0 mL of 1.0 M HCl at 25.0 oC were mixed with 50.0 mL of 1.0 M NaOH also at 25.0 oC in a styrofoam cup calorimeter. After the mixing process, the thermometer reading was at 31.9 oC.
A 325 mL sample of solution contains 25.3 grams of CaCl2. Calculate the molar concentration of Cl- in this solution.
Compound A, C6H10O2, is optically active. It dissolves slowly in aqueous NaOH, consuming one equivalent of base. When the solution is acidified, A is slowly regenerated.
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