Information about the level of CO present in the air is usually expressed in ppm, parts per million. This unit indicates how many parts of CO are in a million parts of air, for example, how many molecules of CO are in a million molecules of the gases that make up the air, or how many cm³ of CO are in a million cm³ of air . The maximum limit recommended by the World Health Organization (WHO) is 9 ppm. The information corresponding to several days of a week in Buenos Aires was: Tuesday (8-16 hs) 8 ppm; Thursday (8am-4pm) 8.5ppm, (4pm-midnight) 3ppm; Friday (8am-4pm) 10.5ppm. Signpost: a) If the air in the city that week was highly polluted or not. b) On what days and times was there a higher degree of contamination. c) An oxidation that we try to avoid: metallic corrosion
Information about the level of CO present in the air is usually expressed in ppm, parts per million. This unit indicates how many parts of CO are in a million parts of air, for example, how many molecules of CO are in a million molecules of the gases that make up the air, or how many cm³ of CO are in a million cm³ of air . The maximum limit recommended by the World Health Organization (WHO) is 9 ppm.
The information corresponding to several days of a week in Buenos Aires was: Tuesday (8-16 hs) 8 ppm; Thursday (8am-4pm) 8.5ppm, (4pm-midnight) 3ppm; Friday (8am-4pm) 10.5ppm. Signpost:
a) If the air in the city that week was highly polluted or not.
b) On what days and times was there a higher degree of contamination.
c) An oxidation that we try to avoid: metallic corrosion
Step by step
Solved in 2 steps
