Write balanced chemical equations for the following reactions (Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank):
1. Production of ammonia: NH3(g) by combining N2(g) and H2(g)
2. Production of nitrogen dioxide: NO2(g) by combining N2(g) and O2(g)
3. Production of sulfuric acid by combining sulfur, oxygen, and water: