Cl2(g) + 2KI --> 2KCl(aq) + I2(s)
The equation given is correctly balanced, because it contains the same numbers of each kind of atoms in the reactants as in the products.
A quadratic equation.
That's the equation.
That word "equals" in there makes it an equation.
The balanced chemical equation for the reaction C2H2 + H2 → C2H6 is: C2H2 + 2H2 → C2H6
The balanced chemical equation for the reaction C2H6 + O2 → CO2 + H2O is: 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
The chemical equation is not balanced. A balanced equation would be: KOH + H2SO4 -> KHSO4 + H2O
The balanced chemical equation for that reaction is: C2H6 + 7/2 O2 -> 2 CO2 + 3 H2O
The balanced equation is: C5H12 + 8O2 → 5CO2 + 6H2O. Therefore, the coefficient for oxygen in the balanced equation is 8.
The balanced equation for the reaction is: 2AgNO3 + 2NaClO3 -> 2NaNO3 + AgClO3
The balanced equation is: C3H4O7 + 8O2 → 4H2O + 3CO2
This equation is HCl + NaOH -> NaCl + H2O.
The balanced equation for FeS + O2 → SO2 + FeO is: 4FeS + 7O2 → 2SO2 + 2FeO
The balanced equation is: 2AgNO3 + 2NaBr → 2NaNO3 + 2AgBr.
It is already balanced
2H2 + O2 --> 2H2O