Other planets have an atmosphere, but earth's is unique because it has large amounts of
nitrogen
oxygen
water vapor

What is the solubility of substance?

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

What is the mass of 0.750 mole of aluminum oxide, al2o3?