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Obtain theoptimum time and maximum concentration of 'R' in Ak1Rk2S (first order)conducted in a CSTR.(May-2004, Dec-2005-Bio &May-2006-Bio) and 100 lit/hr of a radioactive fluid having a half-life of 20hr is to be treated by passing it throughtwo ideal stirred tanks in series. The volume of each stirred tank is 40,000 liters. In passingthrough this system, by how much has the activity decayed? The reaction follows first order kinetics with a constant density
For the following cases: How much energy is lost every day when the steam temperature is maintained at 200oC, and the surrounding average air temperature is 20.0oC, and the surroundings average air temperature is 20.0oC? Neglect losses though the end..
Consider the following statements: "Heat is a form of energy, and energy is conserved. The heat lost by a system must be equal to the amount of heat gained by the surroundings.
Wet air containing 4.0mole% water vapor is passed through a column of calcium chloride pellets. The pellets adsorb 97.0% of the water and none of the other constituents of the air. The column packing was initially dry and had a mass of 3.40kg, fol..
What is the optimum practical shape for an above-ground dwelling to minimize the heat losses through the building fabric? When is (or was) this optimum shape used? Why is this optimum shape seldom used in richer societies?
Use molecular orbital theory to predict whether the bond order in the superoxide ion, O2-, should be higher or lower than the bond order in neutral O2 molecule.Is the bond order of O2- higer or lower than that of O2?
In a process to produce 1000 kgmol/h acetaldehyde, ethane is fed to the reactor at 1500 kgmol/h and the fractional conversion is 0.8. The product stream contains 2 mol% CO2. Calculate the molar composition of the product stream and the fractional sel..
Calculate the tower diameter and packing height and calculate NTU - Ammonia in air being absorbed by a pure water stream in a packed tower.
air at 4mpa and 3000c enters a will insulated turbine operating at steady state with negligible velocity. the air
A 2014 Toyota Prius has a drag coefficient of Cd at road speed, using A m2 as the reference area. Determine the horsepower required to overcome drag at a velocity of v m/s. Calculate the answer if Cd= 0.26; A= 2.33m2 and v=30 m/s. Compare this fig..
Why a substance is being heated at a fast rate the temperature of decomposition
For a feed rate 2000 kg/h of solution, composition 30% w/w MEK, determine the number of stages required to recover 95% of the dissolved MEK, using 700 kg/h TCE, with countercurrent flow. Tie-line data for the system MEK-water-TCE percentages w/w, ..
Natural gas is widely used as fuel in the process industries, so the price of natural gas is often an important variable in economic analysis. Develop a 15-year forecast of U.S. natural gas prices. Historic natural gas prices are available at www...
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