What are the predicted m/z values (masses) and relative heights of all the molecular ions of 1-bromoethane that would appear on a mass spectrum (excluding peak produced by 13C) ? One peak at m/z=108 and an second peak at m/z=110. The second peak is approximately 1/3 the height of the first peak. One peak at m/z=79 and an second peak at 81 . The second peak is approximately the same height as the first peak. One peak at m/z=108 and second peak at m/z=110. The second peak is approximately 1/2 the height of the first peak. One peak at m/z=79 and an second peak at 81 . The second peak is approximately 1/2 the height of the first peak. One peak at m/z=108 and an second peak at m/z=110. The second peak is approximately the same height as the first peak