In the Copper Cycle Lab the experimental results should have as much at the end of the experiment as at the beginning. This proves the law of .

atoms or 'mass'

Explanation:

Mass reaction which postulates that the amount of reactants in a reaction should be equal to the amount of products from that reaction. hence a balanced reaction.

the vibration from the sound waves messed with the glass and it shattered.

hope this .

answer; society;