Given the equation: N2 + O2 - NO2, what has to be done to properly balance
the equation so that the law of conservation of mass is shown?
Remove the subscript of 2 after N on the reactants side.
Add a coefficient of 2 in front of O2 on the reactant side.
Add a coefficient of 2 in front of the O2 on the reactant side and a coefficient
of 2 in front of NO2 on the product side.
Add a subscript of 2 after N on the product side.