Draw a mass-balance diagram and estimate the monthly mass emission percentage to the atmosphere.

Fine dust particles (S.G = 1.5) of 5 um (x50) are to be separated from a dust-laden exhaust gas in a cyclone separator. The particles enter the cyclone with air at 15°C with a rate of 48000 L/min. Design several HR cyclones configured in parallel to achieve a pressure drop of 1800 Pa.

Particle size (um) Wt % 0-10 10-20 20-30 8. 10 12 30-40 15 40-50 19 50-60 60-70 14 13 9. 70-80 The size distribution of dust in air exiting from an industrial operation is given above. You are busy designing a settling chamber to clean the air. The horizontal velocity is to be 0.31ms-1. The temperature is 770C, the specific gravity of the particle is 2.0, and the chamber length and depth equal 7.5m and 1.5m respectively. What is the terminal velocity of the particle that is just removed 100%? Enter the answer value in ms 1 to an accuracy of at least four decimal places. Assume that B = 0.9.

Q.1) In the experiment, you wrap a piece of copper wire around your magnesium strip to suspend the magnesium inside the eudiometer. Why is copper wire a good choice for this task? Group of answer choices It conducts electricity very well It reacts strongly with the acid It does not react with the acid It is much heavier than Mg   Part B) A 45 mL sample of a dry gas is collected at 380 torr and 25 °C. Calculate the volume of the gas sample (in mL) at STP.   Part C)Using the data provided in Table 3 in the handout (also provided below), calculate the vapor pressure of water at 21.0 °C. Table 3:  Vapor pressure of water at various temperatures T (˚C) P (mmHg) T (˚C) P (mmHg) T (˚C) P (mmHg) 0 4.58 16 13.63 26 25.21 5 6.54 18 15.48 28 28.35 10 9.21 20 17.54 30 31.82 12 10.52 22 19.83 40 55.3 14 11.99 24 22.38 50 92.5

A student uses a polystyrene calorimeter to determine the enthalpy of reaction of hydrobromic acid with potassium hydroxide. The student mixes 100.0 mL of 0.50 mol/L HBr(aq) at 21.0oC with 100.0 mL of 0.50 mol/L KOH(aq), also at 21.0oC. The highest temperature reached is 24.4oC. Write the thermochemical equation of the reaction.

One hundred lb/minute (dry basis) of air at 80oF and 1 atm with 65% relative humidity is dehumidified isothermally and isobarically to 10% relative humidity in a continuous, countercurrent, movingbed adsorption unit. The adsorbent is dry silica gel (SG) having a particle-diameter range of 1.42 to 2.0 mm. The adsorption isotherm is given by Eagleton and Bliss as                     qH2O = 29cH2O                                                                                                      with concentration in lb H2O/lb dry air and loading in lb H2O/lb dry SG. If 1.5 times the minimum flow rate of silica gel is used, determine the number of equilibrium stages required

show psychrometric chart graph

Is the rate of air flow is equal to 81,500kg/hr??

If the amount of carbon fed into the atmosphere is ‘X,’ of which 7.5 percent steadily remains in the atmosphere. How long (days) carbon is likely to stay in the atmosphere.

The production of a biodegradable bottle involves forcing air at temperature of 20 ̊C, and relative humidity of 40% to flow at a velocity of 2.0m/s over the surface of a polymer solution dissolved in water. The length parallel to flow is 50 cm and the average surface temperature is 16 ̊C (a) Estimate the amount of water evaporated per hr/m2 of surface. Data: Mass diffusivity, D=0.256 cm2/s; Partial pressure of water vapour at 20 ̊C and relative humidity 40% is 0.011 bar; at 16 ̊C and saturated, the vapour pressure is 0.017bar; Viscosity and density of air are: 18.38 X10-7 Pa and 1.22kg/m3, respectively; Specific water vapour constant, Rw= 461.889 J/kg.