Which of the following statements is true about the role of oxygen in cellular respiration? it reacts with water. it is one of the ending compounds. it is one of the beginning compounds. it reacts with carbon dioxide.

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.

Find the mass, in grams, of 5.00*10^23 molecules of f2

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?