the chemical reaction 8fe+s8; the chemical reaction: agno₃ + nacl → agcl + nano₃ is a:; the chemical reaction 2 co + o2 → 2 co2 is a; formation reaction; the chemical reaction: 2 h₂o → 2 h₂ + o₂ is a:; the chemical reaction: ch₄ + 2 o₂ → co₂ + 2 h₂o is a:; identify the type of reaction represented by the equation: zn + 2hcl → zncl2 + h2; ch4 + 2 o2 → co2 + 2 h2o type of reaction