a sample of black crystals containing only tungsten and chlorine, when reduced with hydrogen gives 0.2232g of tungsten metal and certain amount of hydrogen chloride which is absorbed in water. titration of the hydrochloric acid thus produced requires 46.2mL of 0.1051 M NaOH to reach the end point. what is the empirical formula of the black tungsten chloride

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.