Acceleratory period begin after 6 hours of hydration True False O
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- Acceleratory period begin after 6 hours of * hydration True O False O . Matter is de fined as إجابتك Felite is .. إجابتكThe second stage nitrification process is :presented by the following equation Nitrobacter 2NO2+ 02 -> 2NO3 Give the value of Oxygen Required for this ?stage in Ib / IbN oxidized إختر أحد الخيارات 4.57 .a O 1.0 .b O 1.14 .c O 3.43 .d OO l TurkçelHAsiacel 9:55 رجوغ( d278 0 278 Com/forms you submit this form. Not roqayah.ahmed.moren6@student.uobabyl on.edu.iq? Switch account * Required Tenth Sec. Which compound may lead to a rapid stiffening of the paste with a large amount of heat generation? * Dicalcium silicate Tricalcium aluminate Tricalcium silicate Tetracalcium alumino ferrite Page 11 of 11 Вack Submit Never submit passwords through Google Forms. This form was created inside of University of Babylon. Report Abuse تقی کریم کامل cی 9:54 PM ic p
- Soive the TOllowing. Problem 1: The pressure in the air space above the gasoline surface sp.gr. = 0.60 in a tank is 120 kPa absolute. The pressure 2.40 m below its surface is: 0 82) ond 6 m of water FindWet coal is dried in a continuous rotary dryer that operates at atmospheric pressure. The chips with a water content of 40 wt% and must leave with a moisture content of less than 15%. Hot air is fed to the dryer at a rate of 11.6 m (STP)/kg wet coal. HOT AIR MOIST AIR DRYER WET COAL DRIED COAL To monitor the performance of the dryer by sampling the exiting coal and determining their moisture content directly would be a cumbersome procedure and almost impossible to automate. Instead, wet- and dry-bulb thermometers are mounted in both the inlet and outlet air lines, and the moisture content of the exiting chips is determined by a material balance calculator. (STP: Standard Temperature and Pressure is 0*C and 101.325 kPa) (a) The hot air stream has an absolute humidity of 0.058 kg moisture/kg dry air and leaves with 0.087 kg moisture/kg dry air, calculate the mass of water in the exiting air per kilogram of wet coal fed. (b) Can the dryer reduce the wet coal moisture to 15%? If the answer…) The initial concentration of acetic acid is 0.6mM and its concetration is 0.42mM after adsorption with 0.5 gram of activated carbon of 100 mL acetic acid solution. Determine Q
- Problem 8 Given L0,mix=12 mg/L, DO mix=DOsat=11.33 mg/L, kd=0.3 d-1, and kr =0.4 d-1, find the following: (a) Initial oxygen deficit (Do) (b) Critical time on the oxygen sag curve (tc) (c) Critical deficit (Dc)gxauple3: A pehroleum Cut has the tellewing ASTM distillation data. volx distille 3 0 50 90 10 70 95 Temp °C 166.5 35 50 73 97.5 126.5 (Q2-5 Convent these dater to T Bp data methead. plot the results fhen Caladate k and Mut.? Danbat's usingShort out this problem
- Please upload your full solution to the following problem. Determine the dosage and daily consumption of powdered activated carbon (PAC) required for trichloroethylene (TCE) removal given the following design specifications: 6 SUL Influent concentration = 1 mg/L TCE Carbon type: Calgon Filtrasorb 400 (12 x 40 mesh); pb = 450 g/L Freundlich parameters for TCE • Freundlich capacity parameter K = 55.9 (mg/g)(L/mg)¹/n • Freundlich intensity parameter 1/n = 0.48 Treatment objective = 0.005 mg/L TCE Flow rate = 378.5 L/min (100 gal/min) Assume that no other solutes compete with TCE for adsorption onto the PAC, and that the PAC is saturated at the treatment objective.11-7. A water contains 200 mg/L Ca, 75 mg/L Mg, 180 mg/L HCO3, and 150 mg/L CO₂- all expressed as CaCO3. Determine the chemical dosages required to soften this water as much as possible without removing magnesium. What will the final hardness be? 1-8. If the water of P7 is to be softened to a final hardness of 85 mg/L as CaCO, and is not to contain more than 25 mg/L. Mg as CaCO3, find the required chemical dosages. 1-9. Design a cation-exchange process which will produce a water meeting the criteria of PT-8. Assuming the salt must be provided in an excess of 100 percent, how much salt would be used per year in a plant with a capacity of 5000 m³/day? Solve 11-8 & 11-7 The manufacturer recom-1-What is the Environmental significant of solids? 2-Discuss possible sources of solids in ground water and surface water. 3-Total suspended solids are mostly responsible for of water. ---- ---- a. Turbidity b. Colour c. Odour d. Taste 4-Always the total suspended solids value will be the total solids value. --- --- 5-High total dissolved solids indicates lower level of hardness. True or false? 6-“Groundwater usually has higher dissolved solids and surface water usually has higher suspended solids"- Explain. 7- Why water is evaporated at 103°C rather than 100 °C in experiment of solid of water?