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An impure sample of benzoic acid (C6H5COOH, 122.12g/mol) is titrated with 0.9855 M NaOH. A 3.412g sample requires 24.43ml of titrant to reach endpoint. What is the percent by mass of benzoic acid in the sample?
calculate the number of vacancies per cubic meter in some metal at 759degc. the energy for vacancy formation is 0.82
Problem- The pH of a solution is maintained constant at 6.5. Calculate the molar solubility and solubility of Mg(OH)2 in this solution.
Calculate the hydrogen Ion concentration, in moles per liter, for solutions with each of the following pH values.
Dinitrogen monoxide is still used as a general anesthetic. The Henry's law constant for the solubility of N2O in water is 2.5 x 10^ -2 mol/L x atm. What is the molar solubility of N20 in water if the partial pressure of N2O is 1500 mm Hg
at a certain temperature the vapor pressure of pure benzene c6h6 is 0.930 atm. a solution was prepared by dissolving
1.a pepsin of 3 grams get dissolved in water and formed a solution of 10.00 ml it was found that the osmotic pressure
what is the major product in the claisen condensation of ethyl propanoate in the presence of excess sodium ethoxide
A 1.090 g piece of aluminum is placed into a solution containing 5.10 g of copper (II) nitrate. How many grams of copper will be formed? This is a single replacement reaction.
If the atomic radius of a metal that has the body-centered cubic crystal structure is 0.184 nm, calculate the volume of its unit cell ( in nm^3)
After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment, you determine the temperature of the mixed portions of water to be 45 oC. What is the heat capacity of the calorimeter
The inversion of compound B is experimentally determined to follow the rate law: d[B]/dt = -k[B]a[H+]b. At 25 °C and a constant pH of 3.00, the reaction proceeds with a constant half-life of 40.0 min. At this same temperature, but at a constant pH..
question a 3.00-g sample of an alloy containing only pb and sn was dissolved in nitric acidhno3. sulfuric acid was
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