BALANCE THE FOLLOWING CHEMICAL REACTION :
CrO5 +H2 SO4 ------ Cr2 (SO4)3 + H2O +O2
Balance the following chemical equation.
Na + O2 → Na2O
Ca + N2 → Ca3N2
N2 + H2 →NH3 CaCO3 +HCl → CaCl2 + CO2 +H2O