Only The maximum electrical charge that an atmospheric particle may attain in dr
ID: 485568 • Letter: O
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The maximum electrical charge that an atmospheric particle may attain in dry air is about 8 esu/cm^2. Where the charge of an electron is 4.77 times 10^-10 esu, equal to the elementary quantum of electricity (the charge on one electron or proton), how many electrons per square centimeter of surface area is this? For small charged particles, those that are 0.1 mu m or less in size, an average charge of 4.77 times 10^-10 esu is normally assumed for the whole particle. What is the surface charge in electrostatic units per square centimeter for a charged spherical particle with a radius of 0.1 mu m? What is the settling velocity of a particle having a Stokes diameter of 10 mu m and a density of 1 g/cm^3 in air at 1.00 atm pressure and 0 degree C temperature? (The viscosity of air at 0 degree C is 170.8 mu P. The density of air under these conditions is 1.29 g/L.) A freight train that included a tank car containing anhydrous NH_3 and one containing concentrated HCl was wrecked, causing both of the tank cars to leak. In the region between the cars, a white aerosol formed. What was it, and how was it produced? Examination of aerosol fume particles produced by a welding process showed that 2% of the particles were greater than 7 mu m in diameter and only 2% were less than 0.5 mu m. What is the mass median diameter of the particles? What two vapor forms of mercury might be found in the atmosphere? Analysis of particulate matter collected in the atmosphere near a seashore shows considerably more Na than Cl on a molar basis. What does this indicate? What type of process results in the formation of very small aerosol particles? Which size range encompasses most of the particulate matter mass in the atmosphere? Why are aerosols in the 0.1- to 1-mu m-size range especially effective in scattering light? Per unit mass, why are smaller particles more effective catalysts for atmospheric chemical reaction In terms of origin, what are the three major categories of elements found in atmospheric particleExplanation / Answer
4)
NH3 is base and has lone pair to denote
HCl is acidic
Both will react to form NH4Cl which is the white aerosol
NH3 + HCl ---> NH4Cl
It is acid-base reaction
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