Nitrogen and Oxygen

1. nitrogen

a. The presence of:

- As the free nitrogen in the air approximately 79% volume.

- As the compounds found in living things and a variety of mineral compounds such as chili, NaNO2.

b. manufacture of nitrogen

In the industry are made by distillation of liquid air rise.

c. usefulness of nitrogen

- To make ammonia, urea, ammonium sulfate and nitric acid.

- To break up the damage in the canned food.

- In the process of annealing metals to prevent oxidation.

2. oxygen

a. The presence of

As free oxygen (O2) in air are approximately 20% volume. As the compounds contained in the earth's crust in the form of silicates, carbonates and the water.

b. Preparation of Oxygen

Elektrosida slightly acidified water.

Distilled water stratified air.

c. Ozone (O3) is a form of oxygen alotrof.