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a) Demonstrate that a chemical shift range of 8.0 ppm corresponds to a frequency range of 480 Hz on a 60 MHz instrument. Explain what is the frequency range on a 270 MHz instrument?
(b) Explain what magnetic field strength must be applied for C-13 spin transitions to occur at 90 MHz? magnetogyric ratio for C-13 = 6.728x107 rad.T-1.s-1
An artist statue has a surface area of 14.6 feet squared. the artist plans to apply gold plates to the statue and wants the coating to be 2.5 micrometers thick. If the price of gold were $625.10 per troy ounce, how much would it cost to give the s..
A solution is prepared by dissolving 11.60g of a mixture of sodium carbonate and sodium bicarbonate in 1.00 L of water. A 300.0-cm^3 sample of the solution is then treated with excess HNO3 and boiled to remove all the dissolved gas.
read the scenarios below and respond in the form of an essay which should consist of several paragraphs and appropriate
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
For the following reactants, predict the products formed (if any) and write the balanced molecular equation, complete ionic equation and net ionic equation. NaHSO3(aq)+HI(aq)
Calculate the equilibrium constant for the photodecomposition of ascorbic acid (vitamin C) in a poorly packaged fruit, such as guava. 165g of guava contains 0.377g of ascorbic acid.
a chemistry student dissolved 500 grams of alcl3 in 2750grams of h20. the resulting solution had a density of1.015 gml.
What is the final concentration of the solution made by diluting 4.0 mL of 0.0025M Fe(NO3)3 to a final volume of 10.0 mL
Determine KM for glucose oxidase. KM = M. B. Determine effect on the maximal rate if the concentration of adenine is 0.001 M. Vmax,I = mmol/min.
What is the wavelength of a photon whose frequency is 3.41*10^14 Hz? been told the correct asnwer is 880 nm however I don't know how to even start this problem
a sample of methane gas having a volume of 2.80 l at 25 degrees celsius and 1.65 atm was mixed with a sample of oxygen
Electrons with a maximum KE of 3.00 eV are ejected from a metal surface by ultraviolet radiation of wavelengh 150 nm. Determine the work function of the metal and the threshold wavelength of the metal
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