What is the easiest way to separate hydrogen and oxygen out of a water molecule?
a.) boil the water until the chemical bonds break
b.) they cannot be separated by using physical properties
c.) filter the water using charcoal to break the chemical bonds
d.) use a magnet to pull out the metallic bonds

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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.