2.3) The amide proton of N-methyl formamide (HCONHCH3) appears at 8.0 ppm in organic (nonexchanging) solvents. In water if this proton exchanges with the water protons at rates of 4x10-1/sec at pH 4 and 1x106 /sec at pH 10. Calculate the chemical shifts of the amide proton of 0.010 M N-methyl formamide in water at pH 4 and 10 for a proton NMR spectrometer operating at 600 MHz. Use 5.0 ppm for the chemical shift of the water protons.

You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.