The trend toward higher population and population density in urban areas like Chicago is best explained by

Which formula can be used to calculate the molar mass of hydrogen peroxide

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

Fred is studying a substance that is made out of only one element. this means that