Question

Show by calculation that if you weighed 10,000 molecules of decane consisting of the expected percentages of^12C_10 H_22 and^12 Ca_9^13C_1 H_22 molecules, you would obtain an average molecular weight that is the same as that listed in reference books. Give both the isotopic composition formula and the relative intensity for the two peaks marked with a question mark in the mass spectra in Figures 13.18 and 13.19. Give a structure for the compound with the empirical formula C_8H_8O_2 and the following spectral data: NMR: Singlet at 3.7 ppm (3 H): multiplet at 7.2 ppm (5H) IR: 2850 cm_1 (sharp), 1720 cm_1, 1600 cm_1, 1503_cm MS: as shown in Figure 13.20

Answer 1