Clara Immerwahr (1870-1915) and her husband Fritz Haber (1864-1934) worked on the synthesis of ammonia for fertilizers and developed an industrial process to produce NH_3. To obtain it, they used nitrogen from the air, N₂, and hydrogen, H₂.

a) Write and balance the reaction.

b) Identify the reactants and products.

c) If 28 g of nitrogen react with 6 g of hydrogen, what amount of ammonia is produced?

d) In an experiment, starting with 28 g of nitrogen and 10 g of hydrogen, what mass of ammonia will be produced?