1. Just say NO GROUP 3 – Section 641 Presented to A. Kyi Kyi Tin Members:
Lam Thanh Duy –
Gyem Dhendup –
John Bosqovi –
Htu Khiang

2. A colorless, poisonous gas, NO, produced as  an intermediate during themanufacture of nit ric acid from ammonia or atmospheric nitrog en and as a product of cellular metabolism

6. Nitric Oxide(NO)
Nitric oxide, or nitrogen oxide, also known as nitrogen monoxide, is a molecule with chemical formula NO.
Formula: NO
IUPAC ID: Nitric oxide
Molar mass: 30.01 g/mol
Density: 1.34 kg/m³
Boiling point: -152 °C
Soluble in: Water
Classification: Free Radicals

7. Laboratory Preparation
NO can be prepared in the laboratory by reacting sodium nitrite ( ) with a redusing agent such as ( ) in an acidic medium or Nitric acid with
Equation:

8. Other sources
-Environmental sources include the burning of fossil fuels, which containing nitrgen compounds.

9. -The reaction between nitrogen and oxygen inside the automobile engine at high temperatures.

10. -Lightning also contributes to the concentration of N.O.

11. Uses of NO
1.Its is used as neurotransmitter.

12. 2.Its is also used as a cellular toxin to kill harmful bacteria.

13. 3.N.O. binds to hemoglobin,the oxygen carrying protein in blood.

14. 4.It also helps to regulate blood pressure.

15. 5.It helps muscles to relax and allows the arteries to dilate.

16. Harmfullness to humans
Small levels of NO can cause nausea, irritated eyes and/or nose, fluid forming in lungs and shortness of breath
Breathing in high levels of NO can lead to: rapid, burning spasms; swelling of throat; reduced oxygen intake; a larger buildup of fluids in lungs and/or death
Inhaling N.O. can cause other major respiratory problems in high levels

17. Environmental problems
Helps form acid rain
It contributes to global warming
It hampers the growth of plants
NO can react with other pollutants to form toxic chemicals

19. THANK YOU