Upvoting all answers

which observation would best support that the bond present was a covalent bond?
a) the compound present contains a nonmetal.
b) carbon and oxygen share pairs of valence electrons.
c) aluminum is contained in a compound and forms a cation.
d) the valence electrons are involved in the bonding between atoms.

your answer is B :)

Explanation:

i took the test

hit that thanks button means alot <3

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)