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The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell? (c) What is the value of the equilibrium constant for the reaction occurring in this cell?
At a certain temperature, the root mean square speed of CH4 molecules in 1610 km/h. What is the root mean square speed of CO2 molecules at the same temperature
Write a chemical equation for the formation of methionyl glycine from the constituent amino acids.
What is the percentage of (R)-phenylalanine present in this mixture? d. What is the percentage of (S)-phenylalanine present in this mixture?
A student mixes 5.0 mL 2.00 x 10-3 M Fe(NO3)3 with 4.0 mL 2.00 x l0-3 M KSCN, and 1.0mL deionized water. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.2 x l0-4 M.
A generic salt, AB3, has a molar mass of 183 g/mol and a solubility of 6.60 g/L at 25 °C. What is the Ksp of this salt at 25 °C
Determine the degree of unsaturation for C5H8. Draw constitutional isomers of C5H8 that are terminal and internal. Name each molecule according to IUPAC.
Which of the following is false? A. Molecules with strong intermolecular forces have higher surface tension. B. Molecules with strong intermolecular forces have higher viscosities.
25.0 mL of a gas with a pressure of 1.00 atm is contained in a balloon at 25.0 C. The balloon is then cooled to 5.0 C, and the pressure is found to be 0.750 atm. What is the volume of the gas under the new conditions?
where b and R are constants. If the pressure and temperature are such that Vm = 10b, what is the numerical value of the compression factor?
An NaOH solution contains 2.6 mol of NaOH, and its concentration is 1.3 M. What is its volume?
Draw the structures of each of the following compounds. Determine the number of chirality centers, indicating them in each structures. Also calculate the number of possible stereoisomers for the compound.
Draw structural formulas for the alkoxide ion and the alkyl(aryl)bromide that may be used in a Williamson synthesis of the ether shown. ch3-0-chch3 with a ch3 off of the second carbon from the right Draw both structures in the single sketchpad.
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