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The compounds below cannot be identifed from IR and H NMR spectra alone. Explain. Suggest how other types of spectroscopy might be useful in solving the structure. a. 4-undecanone b. 1-bromo-1-chlorocyclohexane c. (E,E)-4-ethyl-2,4-heptadiene
Given a restriction enzyme that has a concentration of 50 units/ml but your experiment requires that the concentration be reduced to 2.5 units/ml.
The peptide Special-K forms an ?-helix that is broken at high temperatures. The fraction of peptide in the ?-helical form (fraction = moles a-helical peptide/total moles of peptide)
We place 1.32 mol PCl5 in a 1.0L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask? PCl5 = PCl3 + Cl2 K= .47
Energy level of electrons in atoms - The 3s level in hydrogen has a lower energy than the3d level in hydrogen.
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
A 771 mL gas sample at STP is compressed to a volume of 242 mL, and the temperature is increased to 31?C. What is the new pressure of the gas in Pa
When scuba diving, it is important to come back to the surface of the water from deep dives slowly. If this does not happen, then the diver can get the ?bends?.
The liquid rate used is twice the minimum, the equilibrium relationship can be represented as yA=9.95 xA then determine what is HOG, operating line relationship, NOG and packed height of the column?
Your friend decides to decrease cooking time for spaghetti noodles by adding table salt to 2.0 L water. How much table salt (NaCl) must be added to the water in order to raise the boiling point by 4.0?C? (Kf = 1.86?C/m, Kb = 0.512?C/m)
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
How much heat (in {rm kJ}) is evolved in converting 1.00 mol of steam at 140.0 C to ice at -55.C? The heat capacity of steam is 2.01J/g* C and of ice is 2.09 j/g* C.
what is happening when Nh4Cl is added to NH3 (a basic solution)? what is happening when HCl is added to NH3? how are these example
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