The SOo concentration in a stack is 500 ppm, the stack diameter is 12 ft, and the stack gas velocity is 65 ft/secl The gas temperature and pressure are 390 °F ami 1 atm. Calculate the approximate SO2 mass emission rate in Ih/day. (The atomic weight of S - 32 and the atomic weight of O « 16)a. 12,300 Ih/dayb. 16,400 Ih/daye. 24,600 Ih/dayd. 32,800 Ib/day

An ASP operating at equilibrium has an organic loading rate of 2 kg/m³/d and has MLSS of 3000 ratio is mg/1 in the aeration tank. The d-1 (round off to two decimal places). Food F M Biomass,

Prove that k = 1.35 in the problem: The internal energy of a certain ideal gas is given by the expression u = 850 + 0.529 Pv Btu/lb. where P is in psia. Identify the exponent k in the Pvk = C for this gas undergoing in an isentropic process.

The secondary NAAQS for SO2 is 0.5 ppm (for a 3-hour averaging time). Calculate the equivalent concentration in pg/m3 at standard temperature and pressure (STP: T = 25 °C, P-1 atm),

2.40. A solution is known to contain 50 g/m³ of CH₂(CH₂),COOH and 42 g/m³ of NH3-N. Determine the theoretical ultimate carbona- ceous CBOD, the NBOD, and the theoretical total oxygen demand.

Hydrogen is allowed to diffuse through a palladium plate that is 0.008m thick at 500°C. The concentrations of hydrogen at the two faces are 0.65 and 0.30 kg/m³, which are maintained constant. The diffusion coefficient at this temperature is 6.13x10-11 m²/s. Calculate the diffusion flux in units of kg/m²s.

A power plant in rough terrain has a 100-m stack with an inside radius of 1 m.  The plant emits 300 g/s of SO2 from the stack with an exit velocity of 10 m/s at a temperature of 120oC.  Ambient temperature is 6oC and the temperature increases at a rate of 2 K/km.  At 10 m above ground, surface windspeed is 1.5 m/s on a mostly cloudy night.  Find the concentration (mg/m3) of SO2: Directly downwind at a distance of 2 km. At a point located 2 km downwind and 0.1 km off the downwind axis. At the point downwind where it is a maximum. Approximately how far from the stack does this occur?

13.2 At what air temperature will exhaled breath condense by self-nucleation? Assume that a saturation ratio of 4.3 is required. ANSWER: 285.6 K [12.6°C]. Aerosol Technology: Properties and measurement of airborne particles

A smokestack emits pollutant Z into the air on a sunny day. The effective stack height is 270 m. The wind speed is 4 m/s, due east. Your house is located 4.0 km due east of the smokestack. The ground level concentration of pollutant A is 2.0 mg/m3at your house. Your friend lives 4.0 km east and 1.5 km south of the smokestack. a. What is the emission rate of the pollutant in kg/s? b. For the emission rate determined in part a, you now want to know the concentration of pollutant Z at ground level at your friend’s house. i. What parameters change in the dispersion modeling equation? For each parameter, include the parameter symbol, a definition of the parameter, and its new quantitative value and required units.ii. Is the concentration at your friend’s house lower, the same or higher than the concentration at your house and why? (you do not need to calculate the concentration) show all work

In a constant-volume process, 202 J of energy is transferred by heat to 0.90 mol of an ideal monatomic gas initially at 297 K. (a) Find the work done on the gas. (b) Find the increase in internal energy of the gas. (c) Find its final temperature.