chuckrienhardt chuckrienhardt 16-06-2020 Chemistry contestada What are examples of a chemical reaction? Select all that apply. A(2AgI + Na2S → Ag2S + 2NaI B)4FeS + 7O2 → 2Fe2O3 + 4SO2 C) H2O → SiO2 D)SnO2 → Sn + 2H2O