Which formula is an empirical formula? C2H6 C4H10
H2O
H2O2

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.