What coefficients would balance the following equation?

__C2H6 + __O2 → __CO2 + __H2O

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

When the volume and number of particles of a gas are constant which of the following is also constant

Light waves travel than sound waves.