Water decomposes into hydrogen and oxygen
Some Nomenclature stuff^

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

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.

Chemistry worksheet - i am not sure what they are asking for exactly?