Question

Which of the following reactions best illustrates the Law of Conservation of Matter?

A.) H2O2H2O + O2
B.) Na + CuS Na2S + 2Cu
C.) K + AgCl KCl + Ag
D.) NaOH + 2HCl NaCl + H2O

Answer 1

I’m thinking it’s A

Answer 2

answer A..) H2O2HO+O2