Concept explainers
Interpretation:
It should be stated why we might need to consult international treaties related to air quality in engineering designs if we were engineers working on a project to be built in Detroit area.
Concept introduction:
Some authorities require air permits for sources of pollution like construction of a plant or a building.. There are some guidelines to be followed for obtaining those permits.
Degradation of building materials like construction metallic materials, concrete structures and plasters of buildings, bridges are related to the atmospheric condition.
Pollutants in atmosphere can cause chemical and physical changes to the materials used for the construction purpose which will deteriorate the quality of the buildings and other construction work.
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Chapter 11 Solutions
Chemistry for Engineering Students
- 2.) It’s a bad day in the lab! Two students are doing experiments. Each is 20 feet away from the professor. At the same time, each of them lets the same amount of a smelly gas into the room. One of them releases ammonia, NH3, and the other releases SO2. NH3 has a pungent odor, and SO2 smells like rotten eggs. The professor has no idea that this has happened, until she smell the first gas. Which chemical will the professor smell first? (NH3 or SO2) . If the professor starts to smell the first gas 42. seconds after the gas is released, how long will it take her to smell the second gas? sec. * Note: It is unsafe practice to work with these chemicals in an open lab.arrow_forwardThe overall cause of ozone depletion is associated with the presence of chlorofluorocarbons and related halocarbons serving as chlorine source gases. the presence of oxides serving as oxygen sources an increase in the green-house gases an increase in solar UV radiationarrow_forward13 The air that we breathe is actually a mixture of mostly the following gases- 78% N2, 21% O2, and (<1.0%) CO2 and H₂O and constitute about 99% of the air mixture on a poor air quality day. That remaining, approximate 1% of the air is associated with trace amounts of air and particle pollutants that can affect air quality, especially on hot, summer days. Groups that can be affected by poor air quality include those who have asthma, heart disease, and chronic obstructive pulmonary disease (COPD). If the total air pressure is 1.0 atm, what would be the partial pressure (atm) of O2 on a poor air quality day? atm. 480 words IX English (United States) (5 points) Focus F Earrow_forward
- A commercial 737 jet transporting 143 passengers and 5 crew members from Kansas city (MCI) to Baltimore (BWI) burned 11800 lb. of Jet A fuel. Jet A fuel is kerosene based, consisting primarily of CnH2n+2 hydrocarbons, with n = 6 to 16, so the Carbon:Hydrogen ratio is close to 1:2. During this flight , how much CO2 (in kg) was released into the atmosphere? (assume the combustion of fuel was complete, so all fuel was converted into H2O and CO2).arrow_forwardA vehicle manufacturing company forms a plan to meet the requirements set forth by the Clean Air Act. They install air pollution control devices in all manufactured vehicles. Which of the following is the best description of a vehicular air-pollution control device that would meet government air pollution regulation requirements? a device that removes pollution particles from a gas stream by using electrical en- ergy to charge and catch the particles a device that uses electrical energy to convert pollutant gases into less-harmful ones a device that sprays gases with water to remove pollutants D. a device that uses a catalyst to convert pollutant gases into less-harmful ones B.arrow_forwardAn industrial factory makes an effort to reduce the amount of nitrogen dioxide (NO2) emissions it releases into the atmosphere on a weekly basis. Which statement de- scribes the most likely reason for this effort by the industrial factory? A The factory wants to decrease the amount of tropospheric ozone 3) that is formed when nitrogen dioxide N2) emissions react with sulfur dioxide 02). B. The factory wants to decrease the amount of stratospheric ozone 3/ that is (NO) formed when nitrogen dioxide emissions mix with fog. The factory wants to decrease the amount of gray smog that is formed when nitro- gen dioxide N2) emissions mix with fog. The factory wants to decrease the amount of photochemical smog that is formed when nitrogen dioxide 2) emissions react with VOCS and mix with fog.arrow_forward
- How many kg of CO2 are emitted from an automobile that completely combusts all the gasoline in its 16.5 gallon fuel tank? You may assume that gasoline is entirely octane, which has the following combustion equation: 2 C3H18 (1) + 25 O2 (g) → 16 CO2 (g) + 18 H2O (g) Useful information: 1 gallon = 3.7854 L. • This combustion occurs in excess O2. The density of octane is p = 703 g/L. • The molar mass of CO2 is 44.01 g/mol. • The molar mass of octane is 114.23 g/mol.arrow_forwardWhich of the following statements correctly describes the formation of the ozone hole over Antarctica during the months of spring? The reaction of CFCS and sunlight releases molecules of ozone; in spring, UV rays cause the ozone molecules to release chlorine atoms, which then react to break apart ozone molecules. The reaction of CFCS and sunlight releases atoms of chlorine; in spring, UV rays cause the CFCS to break down and release chlorine atoms, which then react to break apart ozone molecules. The reaction of CFCS and sunlight releases atoms of chlorine; in spring, UV rays cause the CFCS to break down and release chlorine atoms, which then react to break apart ad- ditional CFC molecules. The reaction of CFCS and sunlight releases atoms of chlorine; in spring, UV rays cause the CFCS to combine, and these newly formed molecules react to break apart ozone molecules.arrow_forwardAs of the writing of this text, EPA standards limit atmospheric ozone levels in urban environments to 84 ppb. How many moles of ozone would there be in the air above Los Angeles County (an area about 4000 square miles; consider a height of 100 m above the ground) if ozone was at this concentration?arrow_forward
- Differentiate between London smog and Los Angeles smog?arrow_forwardWhich of the following best explains why holes in the ozone layer appear predominantly over the South Pole?A. Formation of ice crystals in stratospheric clouds during the long winters provide surfaces that convert otherwise safe molecules into those that deplete ozone.B. Because of their polarization, free radical chlorine atoms are attracted to the southern magnetic pole where they more effectively serve as catalysts.C. Chlorofluorocarbons combine with higher concentrations of chlorinated carbon compounds from natural sources that are more prevalent in Antarctica.D. Ozone depletion occurs equally all over the globe, but the ozone layer is naturally thinner over Antarctica.Reset SelectionMark for Review What’s This?arrow_forward
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