1. Write two uses of:
a. Nitrogen
b. Oxygen
c. Carbon dioxide
2 List the physical properties of oxygen.
3. Write three differences between combustion and rusting.
Answers
Answer:
the use of oxygen is to breath and we get oxygen from plants
Answer:
1)a)the two uses of Nitrogen is important to the chemical industry. It is used to make fertilisers, nitric acid, nylon, dyes and explosives. To make these products, nitrogen must first be reacted with hydrogen to produce ammonia. This is done by the Haber process. 150 million tonnes of ammonia are produced in this way every year.
b)the two uses of oxygenCommon uses of oxygen include production of steel, plastics and textiles, brazing, welding and cutting of steels and other metals, rocket propellant, oxygen therapy, and life support systems in aircraft, submarines, spaceflight and diving.
c)the two uses of carbon dioxideCarbon dioxide is used as a refrigerant, in fire extinguishers, for inflating life rafts and life jackets, blasting coal, foaming rubber and plastics, promoting the growth of plants in greenhouses, immobilizing animals before slaughter, and in carbonated beverages.
2)list of physical properties of Oxygen is a colorless, odorless, tasteless gas. It changes from a gas to a liquid at a temperature of -182.96°C (-297.33°F). The liquid formed has a slightly bluish color to it. Liquid oxygen can then be solidified or frozen at a temperature of -218.4°C (-361.2°F).
3)the image answer
hope it will help you and you can understand
