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Draw the phenylthiohydantoin (PTH) derivative that was isolated after the second Edman degradation cycle involving the heptapeptide Tyr-Ile-Glu-Asn-Cys-Pro-Ile
How much heat is liberated at constant pressure if .889 g of calcium carbanate reacts with 43.9 ml of .756 M hydrochloric.
At 25 °C, water has an equilibrium vapor pressure of 23.8 mm Hg. If 2.500 g of water is sealed in an evacuated 10.0-L flask and heated to 25 °C, what mass of water will evaporate?
Imagine that a beaker of pure water and another beaker containing water and some NaCl are both boiling under 1 atm pressure. Which of the following statements do you think is correct for this case
What two atomic orbitals or hybrid atomic orbitals overlap to form the CC bond in ethylene
Determine the ionization constant for Hypochlorous before addition of any Potassium hydroxide, KOH and after addition of 25.0 mL of KOH ?
the normal boiling point of menthanol is 64.7 degrees celcius, and its molar enthalpy of vaporization is 71.8 kj/mol. Calculate the value of delta S when 1.00 mol of CH3OH (liquid) is vaporized at 64.7 degrees celcius.
Calculate the initial molarity of Ba(OH)2 and the molarities of Ba2+, OH -, and H3O+ in an aqueous solution that contains 0.38 g of Ba(OH)2 in 0.123 L of solution.
What pH is required to start precipitation of Fe(OH)3 from a 0.110 M solution of FeCl3? Ksp of Fe(OH)3 = 4.0 10-29
What is the rate of entropy generation within the tank? 3.) If we duplicated the stream conditions (temperatures, pressures, and flowrates) with an internally reversible process, what is the maximum rate at which work could be obtained?
Consider a collection of molecules where each molecule has two nondegenerate energy levels that are separated by 6000 cm-1. Measurement of the level populations demonstrates that there are 8 times more molecules in the ground state than in the upp..
Silver metal crystallizes in a cubic closest packed structure. The face centered cubic unit cell edge is 409 pm. Calculate the density of the silver metal.
Find the equilibrium pH of a 10^-3 M NaCN solution by using graphical methods, try to find the equilibrium pH with the charge balance and separately with the proton condition.
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