Agas cylinder contains exactly 15 moles of oxygen gas (O2). How many molecules of oxygen are in the cylinder?​

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

elements make up everything, and they combine to make compounds.

the answer is c

the answer your looking for is c).