What is the steady state emission rate of co by automobiles

Assignment Help Civil Engineering

Reference no: EM13313690

The maximum eight-hour average concentration of carbon monoxide (CO) in an urban area is measured to be 17 ppm. The NAAQS is 9 ppmv (equivalent to 10.3 mg/m^3 estimated at P = 1 atm and T=298.25°K). Automobile emissions are believed to be the only major source of CO; it is assumed there is no background contribution for other sources. Assume also that CO can be modeled as chemically non-reactive over the period of interest. Answer the following questions:

a. If the average wind speed is 3 m/s and the urban area has the dimension of 95 x 95 km with a mixing height of 500 m, what is the steady state emission rate (mg/m^2-s) of CO by the automobiles that would lead to the measured city air concentration of CO of 17 ppm?

b. How much of a reduction in the automobile emission rate would be required to achieve the maximum eight-hour average NAAQS for CO at steady state 9 ppmv ( (10.3 mg/m^3)?

Reference no: EM13313690

Questions Cloud

Find fuel consumption miles per liter for city driving cycle : A car has the following characteristics: weight = 18000 N; cross-sectional area = 2.5 m^2, drag coefficient = 0.5; rolling friction coefficient = 0.02. The energy content of gasoline is 3.5E10^7 Joules/Liter.

What is the nature of media state relations : What is the nature of media state relations in the middle east for example israel

Explain deionized water prior to being diluted with naoh : Using the data collected for part B on your data sheet, calculate the molar mass of the unknown acid. Mass of unknown acid is .501g and volume of NaOH used was 17.51mL Unknown acid was dissolved in 50mL of deionized water prior to being diluted wi..

Explain a coffee-cup calorimeter containing : In the following experiment, a coffee-cup calorimeter containing 100. \rm mL of \rm H_2O is used. The initial temperature of the calorimeter is 23.0

What is the steady state emission rate of co by automobiles : The maximum eight-hour average concentration of carbon monoxide (CO) in an urban area is measured to be 17 ppm. The NAAQS is 9 ppmv (equivalent to 10.3 mg/m^3 estimated at P = 1 atm and T=298.25°K).

Explain how many moles of h+ ions are present : How many moles of H+ ions are present in the following aqueous solutions? (a) 1.1 L of 0.48 M hydrobromic acid (b) 47 mL of 2.4 M hydroiodic acid (c) 477 mL of 0.27 M nitric acid

Write a review of the movie lemon tree : Write a review of the movie lemon tree (2008) directed by eran riklis with reflections and the future of the of the palestinian i israeli conflict

Explain how many total moles of ions are released : How many total moles of ions are released when each of the following samples dissolves completely in water

Calculate total co2 emissions from two polices from 2011 : A more conservative increase from 27.5 mpg in 2011 to 35 mpg by 2020 is supported widely in Washington. California and 13 other states + the District of Columbia hope to increase that stander to 35 mpg by 2017 and 40 mpg by 2020.

User Account

All Pages