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What is the pH at 25 deg celcius of the solution obtained by dissolving a 5.00 grain tablet of aspirin in 0.500L of water? The tablet contains 5.00 grains or 0.325g of acetylsalicylic acid HC9H7O4. The acid is monoprotic and Ka for the acid is 3.3X10^-4 at this temp
A concentration cell is constructed which contains two Ni(s)-Ni2+(aq) half cells. The first half cell has [Ni2+] = 1.35 M, and the second half-cell has [Ni2+] = 3.75 x 10^-4 M. Which half cell is the cathode of the cell and what is the cell potenti..
Deduce the structure of the molecule with the formula C4H8O2 with absorption in the FTIR spectrum at 2975 and 1715 cm -1
Use the thermodynamic data in Appendix B to calculate the standard cell potential and the equilibrium constant at 25°C for the cell reaction in a direct methanol fuel cell
A reaction is initiated at 30°C by dissolving 0.2M fructose-1-phosphate in an aqueous solution. When the reaction reaches equilibrium the concentration of fructose-1-phosphate is 6.52 x 10-5M.
How many electrons must aluminum lose before it can reach a stable electronic configuration? Use the table of ionization energy to justify your answer.
Consider the following equilibrium 2SO2 + O2 yields 2SO3 The equilibrium cannot be established when is/are placed in a 1.0L container
The empirical formula of a compound is found to be P2O5. Experiments show that the molar mass of the compound is 560g/mol. What is the molecular formula of the compound?
Draw all stereoisomers of 2-bromo-4-chloropentane. Use bold and hashed wedges to show the stereochemistry.
A 3.5 L container is filled with gas at 1.00 atm. A piston then compresses the gas to 0.250 L. What is the new pressure?
If a 2.1 L reaction vessel initially contains 723 torr of cyclopropane at 485 degrees C , how long will it take for the partial pressure of cylclopropane to drop to below 105 torr ?
Draw the most stable conformation of trans-1-isobutyl-4-methylcyclohexane in both the chair conformation and the wedge structure.
What range of pH is suitable for this kind of buffer? Calculate the ratio of phosphoric acid to phosphate to gice you pH .= 6.8
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