I need solution in 15 minutes please. Q3//A/ 1- What is the osmotic pressure at 20 C of a 1Ldesigning an RO system to achieve a desired level of water purification?atm)/(K-mol) 2- What factors affect the osmotic pressure of a solution? 3- What factors would you consider whensolution containing( NaCl) 3.73% mass percent? R= 0.08206 (L-

Step 1:n=0.05763mol (from above)�=0.0821 L atm/mol KR=0.0821L atm/mol K�=20+273.15 KT=20+273.15K…

Answered: Q3//A/ 1- What is the osmotic pressure…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A tank contains 200 liters of fluid in wich 30 grams of salt in dissolved. Brine containing 1 gram of per liter is then pumped into the tank at a rate of 4 liter/minutes the well mixed solution is pumped out at the same rate. Find the number A(t) of grams of salt in the tank at time t.
Assume the described is at steady state. A fluid goes up to an aquifer that has groundwater and a chloride concentration of zero. The groundwater reservoir is 20,000 m^3 and has an outflow of 2 m^3/hour. If the fluid has a chloride concentration of 0.04 M and the aquifer outflow has 0.0084 M, how much chloride is precipitated in the reservoir? Any missing chloride is due to chemical reaction consumption.
A municipal waste water has a BOD5 of 200 mg/L at 20 ˚C. The reaction rate constant k at 20 ˚C is 0.23 day-1.[5] a. calculate the ultimate CBOD.[5] b. calculate BOD5 at 15 ˚C.
A container contains 200 g of solution in which 30 grams of salt are dissolved. Brine containing 1 g of salt/L is then poured into the tank at the rate of 4L / m * i * n and the solution is mixed well and is pumped out of the same rateFind the amount of salt in the container after 5 minutes ?
An ion exchange softener of 5 m3 volume is used to treat the raw water for a community. The absorptive capacity of medium is 90 kg/m3 at particular flow rate. The rate of flow from source is 25000 m3 /day. Determine the limiting hardness in treated water if ion exchanger softener is regenerated on daily basis
A 200-gal tank is half full of distilled water. At time t = 0, a solution containing 0.5 Ib / gal of concentrate enters the tank at the rate 5 gal / min, and the well-stirred mixture is withdrawn at the rate of 3 gal / min. a) At what time will the tank be full? b) At the time the tank is full, how many pounds of concentrate will it contain?
A stream containing no biochemical O2 demand (obviously a hypothetical situation) has a DO of 5.00 mg/L and a flow rate of 8.70 m3/s. The temperature of the stream is 15 degrees Celsius. The average velocity in the stream is 0.174 m/s. The average depth is 5 m. Determine the reaeration coefficient and the rate of reaeration.
A tank originally contains 380 liters of brineholding 450 g of dissolved salt. 8 liters/min ofbrine containing 3.75 g/L of salt enters the tankand the mixture assumed uniform leaves therate of 12 L/min. Determine the amount of saltafter 10 min.
APPLICATIONS OF DIFFERENTIAL EQUATION: A tank is initially filled with 100 liters of pure water. Brine containing 6 grams of salt per liter comes in at a rate of 4 L/min. Well-mixed solution comes out of the tank at the same rate. After what time, in minutes, will the tank concentration be 3 g/L
What is the pH of a buffer made from 0.350 mol of HBrO (Ka = 2.5 × 10⁻⁹) and 0.090 mol of KBrO in 2.0 L of solution?
A small lake with volume 10,000 m3 has a stream flowing into it with flow rate 100 m3/day and a Toluene concentration of 1.0 mg/m3. A factory discharges 5 m3/day into the lake with Toluene concentration of 10 mg/m3 – they want to increase effluent to 50 mg/m3. Toluene decays at a rate of 0.01/day. Assume steady-state and completely mixed (CSTR). a) How would this increase in discharge concentration change the lake concentration? b) Field studies show that the same lake would be better represented by dividing the lake into two cells. The first cell having a volume of 2,500 m3 and the second with 7,500 m3. How does this affect the estimate of concentration leaving the lake? Compare with one-cell model.Assume the factory continues to discharge at 10 mg/m3 into the first cell.c) Why does modeling the lake as multiple cells impact the final concentration leaving the lake? What do you expect might happen to the final concentration leaving the lake if we modeled it as more cells? How would…
In a biological wastewater treatment system, which of the following conditions could beconsidered as an anoxic condition: ( )(A) [Dissolved Oxygen] = 3.5 mg/L and [Ammonia-N] = 10 mg/L;(B) [Dissolved Oxygen] = 0.3 mg/L and [Nitrate-N] = 15 mg/L;(C) [Dissolved Oxygen] = 0.05 mg/L and [Nitrate-N] = 0.1 mg/L;(D) [Dissolved Oxygen] < 0.05 mg/L and [Ammonia-N] = 10 mg/L

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