Answer:
The correct answer is option 2.
Explanation:
Law of conservation of Mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.
This also means that in a balanced chemical reaction total mass on the reactant side must be equal to the total mass on the product side.
Law of conservation of energy states that energy can neither be created nor be destroyed but it can only be transformed from one form to another form.The total energy of an remains constant in a chemical reaction,.
For example:

Mass of reactants = 
Mass of products = 
Charge on reactant side = Charge on product side


Smh das tough and all and same i got hella overdue
322 g/mol it’s the answer for the calculate the molecular formula
Answer:
B.False
Explanation:
Volume is used in 3D shapes, 2D is found by area.
Hope this helps please mark as brainliest ^^
Answer:
the newspaper one is a chemical change because the chemicals in the paper have reacted with something and turned a different color. the wax one is a physical change because it is a change in the phase of matter, which is always a physical change (still the same substance chemically)