Gaseous Nitrogen Monoxide Reacts with Oxygen Gas to Form Brown

Gaseous nitrogen monoxide reacts with oxygen gas to form brown nitrogen dioxide gas. Based on the initial reaction mixture, what should be present after the reaction occurs?

A) 6 molecules of nitrogen dioxide
B) 5 molecules of nitrogen dioxide, and 1 molecule of oxygen
C) 6 molecules of nitrogen dioxide, and 1 molecule of oxygen
D) 4 molecules of nitrogen dioxide, and 2 molecules of nitrogen monoxide
E) 3 molecules of nitrogen dioxide, and 3 molecules of nitrogen monoxide