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1. Would you expect phosphorus to exhibit an NMR spectrum? Why or why not?
2. When radio-frequency energy is absorbed by a nucleus with a spin of 1/2 that is in a magnetic field, what happens?
3. How does the irradiation of nuclei in FT-NMR instruments differ from irradiation in other types of NMR instruments? What are the advantages of FT-NMR over the other NMR techniques?
4. In many respects, the spectrum of CH3CH2I (iodoethane) appears to be identical to that of ethanol. What are the differences in the two spectra and why do these differences arise?
Attachment:- 1847729_1_NMR-Comparisons--1-.pdf
Why does the water solubility of the acidic compound change when going from the aqueous base to the aqueous acid? pls write the eq'n to illustrate this change.
The speeds of 12 particles (in cm/s) are 0.5, 1.5, 1.8, 1.8, 1.8, 1.8, 2.0, 2.5, 2.5, 3.0, 3.5, 4.0. Find the average speed, root mean square speed, and most probable speed of these particles. Explain your results
If you add 0.35 g NaF to 150 mL of a 0.30 M HF, what is the pH of the resulting solution?
A 782 mL gas sample at STP is compressed to a volume of 131 mL, and the temperature is increased to 22 ? C. What is the new pressure of the gas in Pa? Answer in units of Pa
Calculate the standard free energy change for silver sulfate dissolution at 25 degrees Celsius.
The half -life of 14C is 5730 years. A sample taken for radiocarbon dating was found to contain 56 percent of its original 14C. What was the age of the sample? (*Hint: The decay follows first order kinetics).
Compare the roles that these groups might play in catalysis with those of zinc in carboxypeptidase.- What atoms are formally reduced in the overall reaction?
What is the change in internal energy (in J) of a system that absorbs 0.532 kJ of heat from its surroundings and has 0.225 kcal of work done on it? = j
What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl.
What would be the charge of the imidazole side chain of histidine at pH 7? Assume the pKa of the side chain is 6.0. 8) Assume the pKa of the alpha-carboxyl group = 2.0 and the pKa of the alpha-amino group = 10.0. What would be the net charge of gly..
Write the equilibrium constant expression KP for the following reaction. (Pressure equilibrium expressions take the general form 'Kp = pHCl2 / pH2 . pCl2'.)
What is the limiting reactant when ammonium chloride is synthesized from 1.0 atm of hydrogen chloride gas and 1.5 atm of ammonia gas at a constant temperature and volume
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