The following are recording gauges except for: Natural Siphon Type B) symon's Gauge Weighing bucket type Tipping bucket type
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- For a steel alloy it has been determined that a carburizing heat treatment of 11.9 h duration will raise the carbon concentration to 0.440 wt% at a point 1.00 mm from the surface. Estimate the time necessary to achieve the same concentration at a 6.40 mm position for an identical steel and at the same carburizing temperature.Which type of activated carbon is most suitable for gasoline vapor recovery?An activated-carbon bed that is 12 ft x 6 ft x 2 ft deep is used in a benzene recovery system. The system is on-line for one hour and is then regenerated for one hour.
- An oil of sp. gr. 0.9 is contained in a vessel. At a point the height of oil is 40 m. Find the corresponding height of water at the point.Coagulant dosage and optimum pH were determined to be 50 mg/l of ferric sulfate [Fe2(SO4)3] and 6.6 respectively from Jar tests. The bicarbonate alkalinity in the water is found to be 20 mg/l as ion. The plant treats 40,000 m3/day of water and has 25 mg/l of suspended and colloidal solids. The ferric salt reaction in water is given below: (Atomic Weights: Fe-55.9, C-12, H-1, O-16, S-32, Ca-40) Fe2(SO4)3.xH2O + 6HCO3 − ⇔ 2Fe(OH)3(??) + xH2?? + 3SO4 2- + 6CO2 How much alkalinity (mg/l as CaCO3) will remain in water? If alkalinity is deficient then how much ferric salt will need to be neutralized and how do we neutralize the water?100 kg of raw sugar containing 93% sucrose, 4% water, and 3% soluble non-crystallizable inert solids is dissolved in 30 kg of hot water and cooled to 20°C. A saturated solution of sucrose at 20°C contains 67% sucrose (w/w). a. Calculate the amount of sucrose (in kg) that remains in the solution. b. Calculate the amount of crystalline sucrose.
- If the Ksp of Sn(OH)2 (s) is 5.33 x 10-27, what is the solubility of it in the unit of mg/L?A water has a Total Dissolved Solids Concentration (TDS) of 250 mg/L. Estimate the equilibrium constant for the following reaction under these conditions: A+2 + B-3 <---> AB- l Log Keq = 10.2 @ I = 0 I = Ionic StrengthDetermine the pH of a solution that contains 2*(10^-4) mg/L of OH- (at 25 degrees).