NMR Spectrometer - Physical Chemistry - Solved Problems, Exams of Physical Chemistry

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1. A certain molecule is calculated by Gaussian 09 to have four possible energy levels whose relative values G given in milliHartrees are: 0, 1.57, 2.23, and 2.57 with degeneracies 1, 3, 1, and 2, respectively. Ina aha mole sample, how many molecules exist at the lowest energy level at 298 K? — 3 ~—2-SZ ee 2 2 Er q= de “4 Ze = tle t+2e = 174 (kr = ( 00S 2\ (24g) = 0.4437 oft nolice Hat ET % Jarihhartree Whip ques with ray aquenert abot Cc nena re levaney, ‘ A) = te x Nn. =/ S36 xo / e L74 - - 2. What is the fi Id strength (in Tesla) of an NMR spectrometer whose proton resonances are found at , 800MHz? , h- AU 4, Py z [, > 4 (Soo x lo” Aa \(Ol2 X16 3) / avg ir = f — _ + / (Bz 16.14 T | HH