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A 25.00 mL sample of the weak acid, propionic acid, HPr, of unknown concentration was titrated with 0.104 M KOH. The equivalence point was reached when 35.31 mL of base had been added. The concentration of the original HPr is
A sample containing 0.187 g Cl- is dissolved in 50.0 mL water. How many moles of Cl- ion are in the solution? What is the molarity of Cl- ion in the solution?
Polyisobutylene (PIB) is equilibrated in propane vapor at 35 oC. At this temperature, the saturated pressure (p10) of propane is 9050 mm Hg and its density is 0.490 g/cm3
Explain which of the following aqueous solutions has the strongest ion-dipole attractions: 0.3 M FeBr3, 0.6 M CaCl2, 0.5 M Ba(NO3)2, 0.2 M (NH4)2SO4, 0.9 M KOH
Provide the structure of the Claisen's pruduct in the self condensation of methyl phenyl acetate.
a gas sample occupies 4.20 l under a pressure of 800 torr at 350K.At what temperature will it occupy 3.60 L at the same pressure?
Most compounds that contain N-H bonds are basic, but saccharin is acidic
1-bromobutane was added to a solution of sodium iodide in acetone. One of the possible side products of this reaction is dibutyl ether. Provide the mechanism of thus molecule.
If 120 of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
Explain the following given for each statement in determining the sequence of peptide with concise (short) but complete response. you must state the specificity of each statement implication in determining the sequence of octapeptide.
A rigid tank of volume 0.5 m^3 is connected to a piston cylinder assembly by a valve, as shown below. Both vessels contain pure water. They a re immersed in a constant-temperature bath at 200°C and 600 kPa
Given that 4NH3(g)+5 O2(g)---> 4NO (g)+ 6H2O (g), If 8.2 moles of NH3 React with sufficient oxygen, how many moles of water will be formed?
Consider the steel tank whose volume is 42.0 L and which contains oxygen gas at a pressure of 18,000 kPa at 23° C. What mass of oxygen does the tank contain?
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