Question

Balnce:- Potassium permanganate, on heating gives potassium manganate, Manganese dioxide and Oxygen gas Calcium Carbonate on heating gives Calcium oxide and Carbon dioxide Magnesium reacts with steam to form Magnesium Hydroxide and Hydrogen gas Lead nitratereacts with sulphuric acid to form white precipitate of lead sulphate and nitric acid Phosphorus reacts with chlorine to form Phosphorus pentachloride

Answer 1

1) 2KMnO4(on heating)=K2MnO4+MnO2+O2

Answer 2

1)-2KMnO4-on heating k2MnO4+MnO2+O2

2)- CaCO3-CaO+CO2

3) Mg+2H2O-Mg(OH)2+H2

4)Pb(NO3)2+H2SO4-PbSO4+ 2HNO3

5)PO4+2Cl2- 4PCl

these all r balanced also.

I have given answers to your all the 5 questions .