Structural formula and type of reaction for each a) 4-nonene and fluorine b) hexane and oxygen gas c) pentanol and butanoic acid d) propane and hydrogen gas

A__ is two or more substances that are together in the same place but are not chemically combined

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.

When scientists are ready to publish the results of their experimentation, why is it important for them to include a description of the procedures they used?