Balance the following equations
`KMnO_4 + H_2SO_4 to K_2SO_4 + MnSO_4 + H_2O + O_2`

Balance the following equations K_2Cr_2O_7+ H_2SO_4 to K_2SO_4 to K_2SO_4 + Cr_2(SO_4)_3 + H_2O + O_2

Complete the following equations: C + Conc. 2H _2SO _4 to'

Balance the following equations Fe_2(SO_4)_3 + NH_3 + H_2O to Fe(OH)_3 + (NH_4)_2SO_4

Balanced the following chemical equations : NaOH+H_(2)SO_(4)toNa_(2)SO_(4)+H_(2)O .

a) List any three observation that determine that a chemical reaction has taken place. Also list three in formation that cannot be obtained about a chemical reaction merely by its chemical equation. b) Balance the following chemical equations i) Fe+H_(2)O to Fe_(3)O_(4) +H_(2) ii) CO_(2)+H_(2)O to C_(6)H_(12)O_(6) +O_(2) OR a) Explain the following in terms of gain or lose of oxygen with two examples each. i) Oxidation ii) reduction. b) Balance the following chemical equations. 1) HNO_(3)+Ca(OH)_(2) to Ca(NO_(3))_(2)+H_(2)O ii) NaOH + H_(2)SO_(4) to Na_(2)SO_(4) + H_(2)O