That depends on the fuel. Natural gas, methane, needs 2 molecules of oxygen, but gasoline, octane, needs 17 molecules of oxygen.
8,75 moles of oxygen are needed.
Oxygen
Oxygen.
I am presuming that you are asking how many carbon dioxide (CO2) molecules will be formed when two ethane (C2H6) molecules burn in a plentiful supply of oxygen. The following balanced equation is that of the burning of ethane in a plentiful supply of oxygen: C2H6 + 3.5O2 -----> 2CO2 + 3H2O. The number before each of the molecules in the equation tells us how many there are in this reaction. This means that for every one ethane molecule that is burnt, two carbon dioxide molecules are produced.
16,875 moles of oxygen are needed.
There are two oxygen atoms in each molecule (hence the prefix di). Ten CO2 molecules would require twenty oxygen atoms
aded
oxygen
oxygen
oxygen
Oxygen.
oxygen
oxygen
8,75 moles of oxygen are needed.
Snow does not burn (combine rapidly with oxygen) because it is a very stable molecule. It will melt or sublimate, but not burn.
Oxygen
oxygen is needed for fuel to burn