polarbear799 polarbear799 01-03-2024 Chemistry contestada Which of the following equations demonstrates the law of conservation of mass? 1) CH₄ + O2 → CO₂ + H₂O 2) CH₄ + O2 → C + 2H₂O 3) CH₄ + O2 → CO₂ + H2 4) CH₄ + O2 → CO₂ + H₂O