Which equation shows a conservation of mass?
AH2 O → H2 + O2
BAg + Cl2 → AgCl
CCaCO3 → CaO + CO2
DKClO3 → KCl + O2
AH2 O → H2 + O2
BAg + Cl2 → AgCl
CCaCO3 → CaO + CO2
DKClO3 → KCl + O2