Question

Please explain how to do numbers 1 and 2 in as much detail as possible I'm very confused. Thank you!

1. Write molecular formulas for compounds that show the following molec- ular ions in their high-resolution mass spectra, assuming that C, H, N, and O might be present. The exact atomic masses are: 1.007 83 (1H), 12.000 00 (12C), 14.003 07 (14N), 15.994 91 (16O). (a) M 98.0844 (b) M 123.0320

2. Camphor, a saturated monoketone from the Asian camphor tree, is used among other things as a moth repellent and as a constituent of embalm- ing uid. If camphor has M 152.1201 by high-resolution mass spec-trometry, what is its molecular formula? How many rings does camphor have?

Answer 1