Physical change, it is because no new substances are formed
Huh what type of question is that?!
Answer: The answer is A. - 4.88x10^20 H2O2 molecules
Explanation: I hope this helps!
The balanced equation is attached in the image below. The coefficients are 2, 2, blank.
Answer:
the same
Explanation:
due to the law of conservation of mass, the mass will not change