23-1. Show that the range of static magnetic field strengths 0.1 to 2.0
tesla corresponds to the resonance frequencies 4.3 to 86 MHz for
hydrogen. By using data from Table 23-1, find the corresponding
resonance frequencies for 19F and 13C.
23-2 Find the number of 13C nuclei in 1 mg of pure 13C. By using the
data in Table 23-1, determine the number of milligrams of 13C
needed to give the same signal as a cubic millimeter of water (see
Example 23-2).