(7 pts) hydrogen and chlorine atoms react to form simple diatomic molecules in a 1: 1 ratio that is hcl. the natural abundances of the chlorine isotopes are 75.77% 35cl and 24.23% 37cl. the natural abundance of 1h is 99.985%, the natural abundance of 2h is 0.015% and there is only a trace (less than 0.001%) of 3h. (a) how many different peaks can hcl produce in a mass spectrometer and what is the mass number for each peak observed? (b) what is the relative abundance of each mass. (c) sketch the mass spectrometry analysis output (relative number of atoms vs mass number) for an hcl sample.

The following peaks with the following intensities are will be observed

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).