Effluent from an industry 'A' has a pH of 4.2. The effluent from another industry 'B' has double the hydroxyl (OH-) ion concentration than the effluent from industry 'A'. pH of effluent from the industry '8' will be
Q: 1. Determine the resultant of the concurrent forces shown in figure a and b. 400 lb Figure b bor 400...
A:
Q: Why should developers strictly follow the National Building/Structural Code of the Philippines?
A: The reasons why developers strictly follow the National Building/Structural Code of the Philippines ...
Q: A steel tape, known to be of standard length at 20°C, is used in measuring a 3,895.70m line. The coe...
A:
Q: Given data : Work done=20 Joule Displacement=5 m Calcualte force applied
A: This question is related with mechanics . In this question we are provided with value of work done a...
Q: Determine if the homogeneous system has a nontrivial solution. Use row operations in the process. Ju...
A:
Q: 2.5 k/ft Hinge 35 k B -16 ft- -8 ft 8 ft-
A:
Q: The center lines of two parallel road tracks, 65 m apart, are to be connected by two simple curves w...
A:
Q: F, y Grid size: F3 F2 100 mm FA
A: 3) Calculate the equivalent magnitude and sense of the moment for all forces , ∑M=0M1=52×45×500-52...
Q: ACTIVITY 3- Resultant of three or more Concurrent forces 1. Determine the resultant of the concurren...
A:
Q: What is the three main groups of clay minerals? O 1.- Wet Clay - Montmorillonite - Illite O 2. - Kao...
A: 4 kaolinite Montmorillonite Illite
Q: The beam is subjected to the loading shown. If the allowable shear stress is Tallow = 75 MPa and the...
A:
Q: The frequency distribution of the compressive strength of 20 concrete cube specimens is given in the...
A:
Q: Calculate the volume (in L) occupied by 5.2 kg of CO2 at 152 kPa and 315K
A:
Q: From the data of grain size analysis; determine the following: a) coefficient of uniformity. b) Cl...
A: To calculate the coefficient of uniformity we need to plot particle distribution curve Keeping grain...
Q: rom the centroid of the tension steel. 28 MPa and steel yield strength is fy aximum moment due to th...
A: data we have effective span L =4.5 mdead load = 20 kn/mlive load =35 kn /msteel convergingd =75mmfc...
Q: In the figure, a longitudinal hole is bored across the length of a cantilever beam having a rectangu...
A:
Q: P-1: A steel column has the following properties: E= 200 GPa, Fy = 200 MPa, %3D L = 12m, A = 8000 mm...
A: Given data E = 200 GPa = 200000 Mpa Fy = 200 Mpa L = 12 m A = 8000 mm2 Iy = 37.7 x 10 6 mm4 Ix =12...
Q: A one-day rainfall of 20.0 cm at a place X was found to have a period of 100 years. Calculate the p...
A:
Q: Problem 1: The van shown in the photo has a mass of 2500 kg and the trailer has a mass of 800 kg. Th...
A: Draw the FBD of the given system showing all forces along their correct directions and then apply Ne...
Q: ) The compound beam is fixed at A, pin connected at B, and supported by a roller at D. Draw the shea...
A: The compound beam is fixed at A, pin connected at B, and supported by a roller at D. Draw the shear ...
Q: If you borrowed P 10,000.00 from a bank with 8% interest per annum, what is the total amount to be r...
A:
Q: The Jeffersonville Transportation Study Area has been divided into four large districts (traffic zon...
A: Solution :
Q: Problem 2. The consumption of nitrates in drinking water is a particular concern for young children....
A:
Q: 5. A building design has spiral reinforced concrete column 9 meters high with a general cross sectio...
A:
Q: ack length at crack location b 83 mm away fr ical material properties of the aluminum have b g/m³ fo...
A:
Q: Determine the adjustment factor
A:
Q: In Fig. 3-38, parabolic gate ABC is hinged at A and is acted upon by oil weighing 50 lb/ft³. If the ...
A: Given, Density of oil ρ=50 lb/ft3 Depth W=1 m
Q: A beam having a width of 300 mm and a depth of 600 mm carries a dead load of 24 kn/m (including its ...
A:
Q: Which bridge design is the weakest? What are the 3 strongest types of bridges? What are the parts of...
A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...
Q: • AASHTO SOIL CLASSIFICATION (by AASHTO) AASHTO = American Association of state Highway and Transpor...
A: Group Index of soil is the number used to allude to the nature of soil utilized as subgrade material...
Q: e of stress if an element is oriented 50° counterclockwise to the element. Show the result on the el...
A:
Q: Determine the additional longitudinal reinforcements (mm?) due to torsion of a rectangular beam with...
A: To find : Additional reinforcement in mm2
Q: n-situ stresses - Seepage condition xample: For the sheet pile which uried in sandy soil ,shown in t...
A: The given data is: The water level is situated at the depth=2 m Assume, the dry unit weight of the s...
Q: Use the principle of impulse and momentum in solving this problem. Say you are given two boxes A and...
A: GIVEN- Weight of box A =100lb Weight of box B =50lb Horizontal force acting on box A (P)= 50lb Coef...
Q: The network of a small construction project awarded to a contractor is shown in the following figure...
A:
Q: A compound shaft consists of brass segment (1) and aluminum segment (2). Segment (1) is a solid bras...
A:
Q: A freeway is being designed for a location in mountainous terrain. The expected free-flow speed is 5...
A:
Q: A rectangular boat with additional load at the center of 1200 kg is submerged in water by 1.8 m. The...
A: Given : Density of fresh water, ρw = 1000 kg/m3Submerged height of boat = 1.8 mLength of boat = 8 mW...
Q: are the results of a sieve analysis from laboratory activity. Show the necessary calculation and dra...
A: Sieve Mass % Cumulative % Cumulative % No Sieve size Retained mass Retained Retained #4 4.7...
Q: Find the force P needed to hold the 10-m-long cylindrical object in position as shown in figure. Wat...
A:
Q: Describe effect of height to diameter ratio on concrete stremgth
A: Effect of H/D ratio on the strength of concrete. H/D ratio is height to diameter ratio used to make...
Q: A 150 mm diameter rivet resists a shear force of shear stress in the rivet. %3D
A: According to given data A 150 mm diameter rivet resists a shear force of V= 8kN To , Find the avera...
Q: Compaction is the densification of soils by the expulsion of: O 1. All of the above. O 2. Air and Wa...
A: Hi! Thank you for the question. As per the honor code, we’ll answer the first question since the exa...
Q: Compute the distance back to the channel "b"in mm. Fy = 250 MPa Using NSCP 2001, compute the axial l...
A: ANSWER HAS DONE FOR THE FIRST 2 QUESTIONS 1. distance back to channel for 2 channels: Ix = Iy Iy = 2...
Q: A 30-m tape weighing 1.5kg is of standard length under a pull of 6kg, supported for full length. The...
A: Given that, length of tape = 30 m standard pull, P0 = 6 Kg measured length, L = 2893.4 m pull appli...
Q: Determine the distribution of flow rate in the network
A:
Q: Given the following principal stresses and principal direction: ox = 27 MP Pa, txy = 6 MPa, Determin...
A: Radius of the circleR=(σx-σy2)2+τxy2R=(27-152)2+62R=8.485 MPAσAVG=σx+σy2=27+152σAVG=21mpaσ1=21+8.485...
Q: Principle of Reinforced/ Pre-stressed Concrete Problem: You are task to design a rectangular section...
A: Mu=328 kN.mb=300 mmD= 500 mmfy=420 MPafc=34 MPaAssuming effective cover =50 mmd=500 - 50 =450 mm
Q: 2. Draw the shear and moment diagram and find the location of the maximum moment. 2 kN 1.5 kN/m 2 m ...
A:
Q: Use the ratio an+1 -to determine if the sequence an {nbd is strictly increasing or strictly decreasi...
A: For the given sequence,
Step by step
Solved in 2 steps with 2 images
- Please choose the correct answer for each question: 1. Activity of a gas in equilibrium with solution is ______? A. its partial pressure; B.1.0; C. its molar concentration; D. 0.0 2. During a sorption procedure, the substance transferred from the gas or liquid phase to the solid phase is called ______ A. sorbent; B. sorbate; C. partition; D. none of the above 3. When a chemical has a lower KOW, it is more ______ A. hydrophobic; B. hydrophilic; C. more absorbable; D. less absorbable 4. _____ occurs on the adsorbent surface A. Adsorption; B. Sorption; C. Absorption; D. Adsorption and absorption 5. _____ addresses the change in the amount of a substance of interest with time. A. The equilibrium approach; B. The kinetic approach; C. Henry’s Law; D. Freudlich isotherm equationAluminum pieces inadvertently collect on the filter. a. If left on the filter, will the percent yield of the alum be reported as too high or as too low? Explain. b. If the aluminum pieces are detected on the filter, what steps would be used to remedy the observation? Explain.A treatment plant has been designed to achieve 99 percent inactivation of Giardia Lamblia using chlorine dioxide. The engineer used data on the disinfection of Giardia Lamblia at 20°C for the design, but the plant operates in a northern climate, and current estimates are that the low water temperature in some winters will be 0.5°C. Estimate the expansion required in the contact chamber in order to achieve the same inactivation at that temperature. You may assume complete mixing in the contact chamber and that the inactivation of Giardia Lamblia follows the Chick-Watson relationship. Ct values for achieving 90% inactivation of Giardia Lamblia (mg.min/L) Temperature (°C) 0.5 °C 5 °C 10 °C 15 °C Chlorine 0.97 0.63 0.48 0.32 dioxide * Note that the chick Watson's disinfection rate constant is a function of temperature. 20 °C 0.24 25 °C 0.16
- The return line in a secondary clarifier Returns sludge at a lower concentration than in the aerator O Returns only volatile material O Returns sludge at a higher concentration than in the aerator Returns sludge at the same concentration as in the aerator1. A commercial laundry is consdiering constucing an ion exchange process to remove hardness from water used in laundering oerpations. The laundry uses 1000 m/d of city water with Ca2+ at 4.5 meq/L and Mg2* at 2 meq/L. Their goal is to reduce total hardness (TH) to 1 meq/L. The softening resin has a TH capacity of 60 kg-TH/m of media with a recommended hydraulic loading rate of 0.4 m/(m2 min). Renegeration can be accomplihsed using 100 kg NaCl per m of ion exchange media in a 15% solution at a hydraulic loading rate of 0.04 m/(m² min). The exchanger tanks available to the laundrey have a diamter of 1 m. 1. What is the total bypass-water flow rate (m/d)? 2. What is the total daily resin volume required to soften the water (m³/d)? 3. How many exchanger tanks are required for a one-day operation cycle? 4. What is the resin bed depth (m) in each exchanger tank? 5. What is the daily volume of NaCl regenation solution used per tank (m/d)? 6. What is the time period required for resin…Problems arise if the contaminant concen- tration in the influent to the manufacturing step rises above a critical acceptable level (ca). Again, assuming that the contaminant con- centration in the municipal water is zero and that the UPW system does not remove any of this contaminant, solve for the recycle ra- tio (RR = R/Q) as a function of the other known quantities, Q, ca, and W. NOTE: for the purpose of answering this question, use "ca" to denote Ca.
- 1. A commercial laundry is consdiering constucing an ion exchange process to remove hardness from water used in laundering oerpations. The laundry uses 1000 m³/d of city water with Ca²+ at 4.5 meq/L and Mg²* at 2 meq/L. Their goal is to reduce total hardness (TH) to 1 meq/L. The softening resin has a TH capacity of 60 kg-TH/m³ of media with a recommended hydraulic loading rate of 0.4 m³/(m² min). Renegeration can be accomplihsed using 100 kg NaCl per m³ of ion exchange media in a 15% solution at a hydraulic loading rate of 0.04 m³/(m² min). The exchanger tanks available to the laundrey have a diamter of 1 m. What is the total bypass-water flow rate (m³/d)? What is the total daily resin volume required to soften the water (m³/d)? How many exchanger tanks are required for a one-day operation cycle? What is the resin bed depth (m) in each exchanger tank? What is the daily volume of NaCl regenation solution used per tank (m³/d)? What is the time period required for resin regeneration in…It is a kind of wastewater treatment where they use activated carbon to treat water. A. Sedimentation B. Coagulation| C. Filtration D. Activated Carbon AdsorptionChose the correct answer 1- The Unit measurement of suspended solids is ...A- kg 2- The Unit measurement of Turbidity is A- °C is B-m B-NTU C- mg/L C-K 3- The Unit measurement of pH www A-mg/L 4- The Unit measurement of alkalinity is .. 5-Non toxic metals includes 6-Dissolved materials size is lees than A- 10 mm D- none of above D- none of above D- none of above B- p.p.m C- g/m³ D- none of above A- m/sec B- m³/sec C- mg/L A-Chromium B- Mercury C- Calcium D- none of above B- 106, C-108 mm D- none of above mm 7- Public standards of Hardness in drinking water is A-500 mg/L B-50 mg/L C-100 mg/L D- none of above 8- Alkalinity species includes are A-HCO3 B-CO3 C- OH D-All of above ... 9- Dental cavities in children can prevented when Drinking water has Fluoride concentration of A- 0.1 mg/L B- 1 mg/L C- 10 mg/L D- none of above 10- Toxic metals are metals that harmful to humans even when exists in concentration of .. A- Small B-Large C-zero D- none of above
- Which of the following is/are correct: 1. X, =+X 2. X- BOD 3. BOD; = BOD 4. BOD, = !! where X and Xy are the total and the volatile solids, respectively, in the bioreactor, fo is the biodegradable fraction in the solids, Xey is the volatile solids in the effluent, BOD5 and BOD, are the 5-day and the ultimate biochemical oxygen demand, respectively, frelates BOD5 to BOD, and is less than 1. O 2 and 4 O 2 only O 1 and 3 O 2 and 33. Some industrial spent catalyst was tested as adsorbent material in a batch experiment. The data are reproduced in the following table. Determine the Final Conc., Ce (mg/L) 14.88 9.55 1.89 0.58 0.44 0.61 0.36 Uptake, q (mg/g) 8.80 8.41 7.33 6.15 5.68 4.92 3.79 a. Determine the coefficients for these data assuming a Freundlich isotherm applies. b. Determine the coefficients for these data assuming a Langmuir isotherm applies. c. Which isotherm model provides a better fit to the data? Explain.i need clear ans and solve very very fast in 20 min and thank you | DYBALA When mixing with water, the calcium silicates react with water molecules to form ----and Calcium silicate hydrate and calcium hydroxide. Calcium silicate hydrate and Ettringite. Calcium silicate hydrate and Portlandite. Calcium aluminate hydrate and calcium hydroxide.