Which is the balanced chemical equation for the reaction of nitrogen (n2) with oxygen (o2) to form no?

The chemical reaction between nitrogen gas and oxygen gas would form the gas nitrogen oxide. It is written as:

N2 + O2 = NO

In balancing chemical reactions, it is important to remember that the number of atoms of each element in the reactants and the product side should be the same. This is to satisfy the law of conservation of mass. So, the balanced chemical reaction would be:

N2 + O2 = 2NO

As we can see, in the reactant side there are two atoms of nitrogen and two atoms of oxygen so we should write a 2 coefficient in the product side. This reaction is a synthesis reaction where two substances combine to form one large molecule.