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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Example 4-7: Single-stage softening A water with the ionic characteristics shown in the bar diagram below is to be softened to the minimum calcium hardness by the lime-soda ash process. Magnesium removal is not deemed necessary. 1. Calculate the chemical requirements and solids produced in milliequivalents per liter. 2. Draw a bar diagram for the finished water. 3. For a flow of 25,000 m³/d, calculate the daily chemical requirement and the mass of solids produced. Assume that the lime used is 90 percent pure and the soda ash is 85 percent pure. mequiv/L mequiv/L co 1.0 Ca²+ нсо; 3.5 5.0 Mg²+ 6.0 so²- Na 8.0 8.0
Example 4-7: Single-stage softening A water with the ionic characteristics shown in the bar diagram below is to be softened to the minimum calcium hardness by the lime-soda ash process. Magnesium removal is not deemed necessary. 1. Calculate the chemical requirements and solids produced in milliequivalents per liter. 2. Draw a bar diagram for the finished water. 3. For a flow of 25,000 m³/d, calculate the daily chemical requirement and the mass of solids produced. Assume that the lime used is 90 percent pure and the soda ash is 85 percent pure. mequiv/L mequiv/L co 1.0 Ca²+ HCO3 3.5 5.0 Mg²+ 6.0 so²- Na 8.0 8.0
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.
An ion exchanger treats 1 MLD of water using an exchanger of capacity 100 kg/day/m3 with rate of flow being 0.5 m3/min/m2. Choose the correct statements assuming total hardness of water equal to 84 mg/1 as Cao. Total hardness of water is equal to 150 mg/l as CaCO3. Correct Option B Sodium Alumino - Silicates may be used as ion-exchanger. Correct Option lon exchanger can result in removing complete hardness. Correct Option Correct Option The height of ion exchanger required is 1.08 m if hardness of water is taken as 150 mg/1 as CacO3.
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An analysis of water from a surface source yields the following results: Ions Concentration (mg/l) Ca +2 Mg +2 HCO3 SO²- 60 18 91.5 96 The temporary hardness (as CaCO3) and permanent hardness (as CaCO3) present in the water are
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Consider an ideal refrigeration cycle that has a condenser pressure 1000 KPa and an evaporator temperature of -15° C. Determine the coefficient of performance of this refrigerator for the working fluids R-134a Property for: |hị, kJ/kg S2 = $1, kJ/kg K P2, MPa T2, °C h,, kJ/kg Wc=h2 - hj h; = h4, kJ/kg R-134a, B.5 T 2 3 %3D B = q/Wc *y - 'y = "b|
5p In the figure, the pipe losses are one and a half times the velocity head at point 2 (1.5v^2/2g.) What is the value of v2? In the figure, the pipe losses are one and a half times the velocity head at point 2 (1.5v₂/2g.) What is the value of v₂? Air: 20 lb /in2 gage Gasoline = 0.68 D = 2 in Water O 76.39 ft/s 37.25 ft/s O 50.7 ft/s 30.5 ft/s 5 ft Fig. 8-66
During a steady flow process, the pressure of the working substance drops from 200 to 20 psia, the speed increases from 200 to 800 ft/s the internal energy decreases 20 BTU/lb and the specific volume increases from 2 to 10 ft³/lb. No heat transferred. Determine the following: a)AKE in ft-lb;/Ibm b)APE in ft-lb/lbm c)AW: (flow work) ft-lb:/lbm d)AH in BTU e) Net work in hp for 15 lb/min of fluid (use mass flow rate for this item only)
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6 Ydu will obtain 2.0 L of tap water for you water hardness test. The water hardness test uses a precipitation reaction to precipitate the Calcium bicarbonate present out of solution by adding 1.9 g of Ca(OH) represented by the following equation: Ca(HC03|21ag) + Ca(OH)215) > 2CaCOsisi + 2 H20 ml What is the percent yield of CaCO3 produced in the hard water test? (fig. 4)

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