Oxidizer oxidation is the number of electrons that an oxidizer molecule will tend to take. For rocket oxidizers this number will be positive. Hydrogen atoms tend to give an electron, carbon atoms tend to give four electrons and oxygen atoms tend to take two electrons. Hydrogen peroxide has two oxidizing electrons and diatomic oxygen has four oxidizing electrons.

In a stoichiometric mixture, the product of oxidizing electrons in an oxidizer molecule and oxidizer molecules will equal the product of reducing electrons in a fuel molecule and fuel molecules. One molecule of oxygen with four oxidizing electrons mixes stoichiometrically with two molecules of hydrogen with two reducing electrons each. Two molecules of oxygen with four oxidizing electrons each mix stoichiometrically with one molecule of methane with eight reducing electrons. Nine molecules of oxygen with four oxidizing electrons each mix stoichiometrically with one molecule of quadricyclene with thirty six reducing electrons. Given oxidizer carbon, oxidizer hydrogen and oxidizer oxygen the oxidizer oxidation can be calculated which is in turn used along with fuel oxidation, oxidizer mix, propellant mix and propellant oxidation to calculate fuel molar.

oxidizer oxidation = 2 * oxidizer oxygen - 4 * oxidizer carbon - oxidizer hydrogen

oxidizer mix oxidation = oxidizer mix * oxidizer oxidation + propellant mix * propellant oxidation
reactant molar = oxidizer mix oxidation - fuel oxidation
fuel molar = oxidizer mix oxidation / reactant molar
 
 

This is used in bipropellant rocket, tripropellant rocket, pumped rocket and rocket cost.
 
  Rocket