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A water sample contains the following impurities per litre
Ca(HCO3)2= 81 mg Mg(HCO3)2=73 mg, CaSo4=68,MgSo4=60mg KCl= 100mg.
Calculate the quantity of lime and soda required in kg for softening 50000 litres of water if the purity of lime and soda are 80% and 90% repectively at wt. Mg=24, S=32, C=12, N=14, O=16, Cl=35.5, Ca=40
derive the time constant for transfer of a metabolite from a particular cell to a neighboring cell. Assume that these are two epithelial cells whose geometry can be approximated as a box and that the two adjacent boxes are connected with transfer ..
The product may bemobile or immobile; since the reaction is irreversible, it does not matter. Thisreaction shows the solute's penetration across the film. Write mass balancesfor the solute and the immobile reagent.
If the feed contains 0.2% argon (from the nitrogen separation process), calculate the purge rate required to hold the argon in the recycle stream below 5.0%. Percentages are by volume.
Is the resulting solution neutral? If not, calculate the concentration of excess H or OH ions left in solution.
Find the rated and maximum torques.
If a saturated solution of NaHCO3 at 60°C is cooled and comes to equilibrium at 30°C, what percentage of the dissolved salt crystallizes?
(a) The safest conditions are achieved by the lowest temperature and pressure in the flash vessel. (b) Vapor flow to downstream equipment can cause a hazardous situation.
The column will operate at 1.1 bar and ambient temperature. If necessary, the aqueous stream may be recirculated to maintain a suitable wetting rate.
A thermally insulated resistor of 20 ohms has a current of 5 A passed through it for 1 s. It is initially at 20 degrees C.
How do the ratios determined in parts (a) and (b) compare? What does this tell you about which range may have more areas of practical application?
Drift velocity and electric field intensity in conductors. A copper conductor with conductivity σ = 5.7 X 107 S/m carries a current of 10 A. The conductor has a diameter of 2 rom.
Describe the facilities and equipment plan and technology plan? Also prepare an organizational chart that depicts the company's structure.
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