Balance the equations :
`C_2H_4+O_2 to CO_2 + H_2O`

Balance the equations : P_2O_5+H_2O to H_3PO_4

Balance the following equation : C + H_2SO_4 to CO_2 + H_2O + SO_2 .

Complete and balance the chemical equation: _____ to C_2H_4 + H_2O

Ethane burns in oxygen to form CO_2 and H_2O according to the equation : 2C_2H_6 + 7O_2 rarr 4CO_2 + 6H_2O If 1250 cc of oxygen is burnt with 300 cc of ethane. Calculate : the volume of unused O_2 .

Balance the chemical equations : Cl_2+SO_2 + H_2O to H_2SO_4 +HCl

Balance the following equation : S + H_2SO_4 to SO_2 + H_2O .

Balance the following equation : P + HNO_3 to NO_2 + H_2O + H_3PO_4 .

Balance the chemical equations : K_2CO_3 + H_2SO_4 to K_2SO_4 +CO_2+H_2O

Balance the chemical equation: H_(2) O _(2) to H _(2)O

Balance the following equation : HNO_3 + H_2S to NO_2 + H_2O + S .