After a chemical change, the substance always changes. It's only after a physical change that the substance does not change. Hope I helped :)
Answer:
Explanation:
independent-longer wire
dependent-bulbs being brighter
constants-lamp brand and so on
Moles roughly: 6.02x10^23
3.4x10^23/6.02x10^23 = .565
Rounded to the thousandths
To see if an equation is balanced, make sure that each side of the reaction has an equal number of the types of atoms. The one that has a mismatch is A
