The coefficient of O2 is 5.The chemical equation is:C5H12 + 8 O2 = 5 CO2 + 6 H2O
The balanced equation is 3 Fe3O4 + 8 Al -> 4 Al2O3 + 9 Fe. Therefore, the coefficient of Fe is 9.
2K + 2H2O --> 2KOH + H2 The balanced equation shows that there is a 2 in front of water.
2
2H2O2------------ 2 H2O + O2 thus correct coefficient is 2
The chemical reaction is:SO2 + 2 H2 = 2 H2O + S
2
The chemical equation is:C5H12 + 8 O2 = 5 CO2 + 6 H2O
The chemical equation is:C5H12 + 8 O2 = 5 CO2 + 6 H2O
The balanced equation is 3 Fe3O4 + 8 Al -> 4 Al2O3 + 9 Fe. Therefore, the coefficient of Fe is 9.
2K + 2H2O --> 2KOH + H2 The balanced equation shows that there is a 2 in front of water.
2
2NF3 --> N2 + 3F2
2NF3 --> N2 + 3F2
Cu + 2H2SO4 ==> CuSO4 + SO2 + 2H2OSo coefficient of CuSO4 is 1
2H2O2------------ 2 H2O + O2 thus correct coefficient is 2
Your formulas are not correct.
There is no single coefficient for that equation, as a coefficient is the number by which any term is multiplied. The coefficients in that equation are 5, 2, 4 and 3.