7.4 A groundwater sample from well #25 has 123 mg/L of Ca2+ and 21 mg/L of Mg2+. Usingthis information, express the hardness of the groundwater sample in meq/L and mg/L as CaCO3.

Hardness is due to Ca and Mg so,Hardness=Cocentration of Ca2+ and Mg 2+Given COnc of Ca2+=123mgLCOnc…

Answered: groundwater sample from well #25 has…

Engineering

Civil Engineering

groundwater sample from well #25 has this information, express the hardness of the p

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter7: Permeability

Section: Chapter Questions

Problem 7.23P

See similar textbooks

Related questions

Q: Small-diameter, high-pressure liquid jets can be used to cut various materials as shown in the…

Q: Define the following: 1) Retrogression 3) Khadir Axis 2) Groyne A) Critical Ex

A: This question comes from Hydrology This question asked about some definitions 1) Retrogression 2)…

Q: 1. Convert the following bearings to their equivalent azimuths: a. N 15° 36' 45" E b. S 80° 51' 20"…

Q: Determine the type and amount of stress in each member of the truss shown below due to wind load…

Q: ) What is the density of the in-situ soil? b) What is the porosity of the in-situ soil? c) What is…

A: ###Determination of Density, Porosity, & Degree of Saturation of soil in situ ####

Q: What is the actual area enclosed by the following figure, using the scale of 1"=40'? 4" Area = _ft²…

A: Converting given dimensions to actual dimensions on field

Q: Oil flows through the system shown in the figure below with negligible losses. Determine the…

A: Given:in fig Area of pipe (A) = 20in2=20/144ft2 Specific gravity of oil in pipe=0.81 Area of pitot…

Q: Air is drawn into a wind tunnel used for testing automobiles as shown in the figure below. (a)…

Q: Oil flows through the system shown in the figure below with negligible losses. Determine the…

Q: 2. Discuss and explain with illustration the graphical method in finding the resultant of two or…

A: The resultant is indeed a single force that exerts the same impact as several forces working…

Q: Q- A precast concrete pile is driven with a 50 kN hammer falling through a height of 1.0 m with an…

A: Given- Weight of hammer W=50 kN, Height h=1 m, Efficiency n=0.6, Set value S= 4mm, Compression c=6…

Q: The 54-mm-diameter cylinder is made from Am 1004-T61 magnesium and is plac lamp when the temperature…

A: From data αm=26×10-6per °Cαs=17×10-6per °CLm=100mmLs=150mmEm=44.7×103mpaEs=193×103mpaδT=130-20 =110…

Q: Problem 3.8 - Determine the moment about the line AB due to Force F. @@@ Z 18 m A with w Mmmöng un…

A: Given data: Coordinates. A 0, 0, 18B 0, -20, 0C 0, 10, 0D 15, 0, 12 F=6 kN

Q: for special occasions. It will cost them P 300.00 to make up and deliver bouquets of flowers Rain…

Q: Determine the force in each member of the loaded truss. The force is positive if in tension,…

Q: A cantilever retaining wall is required to support a backfill having the following soil properties:…

Q: Q- A precast concrete pile is driven with a 50 kN hammer falling through a height of 1.0 m with an…

A: To find out the ultimate resistance of pile by modified hiley formula.

Q: The Froude number of flow in a rectangular channel is 0.8. If the depth of flow is 1.5 m, the…

Q: Exercise 2: Draw the shear and bending - moment diagrams for beam AD. Also determine the maximum…

A: Given Data: The diameter of all pulleys is 600 mm. To Determine: Draw the shear and bending moment…

Q: A pipe-line carrying water has average height of irregularities projecting from the surface of the…

Q: Q- A volume of 3.0 x 106 m³ of ground water was pumped out from an unconfined aquifer uniformly from…

A: Given data- The volume of pumped water=3.0×106 m3, Area A=5 km2, The water level changed from 102 m…

Q: are hydraulic structures that provide passage of stream flow from one side of a roadway. Chamfer…

A: ANS An edge with a 45° bevel is called a chamfer. Chamfered edges are used to hide flaws or damage…

Q: Question A direct shear test was conducted on a cohesionless soil (c = 0) specimen under a normal…

A: Given- Cohesion- C=0,σ=normal stress=200 kN/m2,shear stress τ=100 kN/m2,

Q: REQUIRED: GIVEN: H = 32.5m hla= 1.4m hib = 1.6m AB = 3.8m B = 40° FIGURE: A 3.8m B B1=44⁰ h₁a = 1.4m…

Q: Question A 12 mm thick plate is connected to two 8 mm thick plates, on either side through a 16 mm…

Q: Draw the shear and moment diagram. Show your solution. (input the maximum moment of the beam…

Q: Problem An open circular tank of 20 cm diameter and 100 cm long contains water upto a height of 60…

A: Given Diameter of cylinder D=20 cm, Hence, R=10 cm, Length L=100 cm, Height H=60cm, Speed N=300…

Q: nt B of each force Olb F3 = 160 lb 4-5. Determine the moment of each of the three forces about point…

Q: Determine the force in each member of the space truss and state if the members are in tension or…

Q: Pozzolanic materials: Decrease segregation of concrete Increase compressive strength of concrete…

A: To give the following answer, a) Pozzolanic material is used for b) Pouring with ponding is…

Q: 4mm A 5KN/m Gm 72 2m 2mm 20 KN TOKN Using the moment distribution method, find the moments at A, B,…

A: Given data : EI Constant Find : End moments at A , B , C , D and SFD , BMD . Moment distribution…

Q: What is rock's minimum principal stress? (A) 72.33 kPa (B) 72.53 kPa Ⓒ 72.23 kPa (D) 72.63 kPa

A: Using formula

Q: The lengths of the segments are defined by the functions $1(x)= 15x - 8, $2(x)=6x +6, $3(x)=3x +5,…

A: Giventhat The lengths of the segments are defined by the functions S1(x)= 15x-8, s2(x)=6x+6,…

Q: 29. At a certain point in an oil the shear stress is 0.2 N/m^2 and the velocity gradient is 0.21 per…

Q: Q-A precast concrete pile is driven with a 50 kN hammer falling through a height of 1.0 m with an…

A: To find out the ultimate resistance of pile.

Q: Small-diameter, high-pressure liquid jets can be used to cut various materials as shown in the…

A: Reference : Fluid mechanics,Water jet pressure. Given : 0.1 mm diameter and 690 m/s To find : 1.…

Q: A rectangular open channel of width 4.5m is carrying a discharge of 100 m³/s. The critical

Q: A concentrated vertically load of 50 kN acts at a point on the soil surface. If Boussinesq's…

Q: 19. A compressed liquid in a container has a volume of 1 liter at a pressure of 1 MPa and a volume…

A: Given data in question Pressure 1 and 2 MPa Volume = 1 and 0.995 litre Volume modulus of elasticity…

Q: provide solution on how to get the given answer.. must be neat

A: Rmin=V2127(e+f) where V in KMPH and Rminin meter given e=0.04 V=90 kph calculation of…

Q: Current Attempt in Progress (Bernoulli/continuity) Water flows steadily through a diverging tube as…

Q: Using the moment distribution method , find the moments at A, B, C and D and draw the shear force…

A: EI = constant To be find - Using the moment distribution method the shear force diagram bending…

Q: Q. 13. describe various force acting on dam?

A: solution of above problem is below:

Q: Point A is between points B and C. The distances of B and C from point A are 1000m and 2000m…

Q: What is the specific difference between a standard double-pitch roller chains and standard roller…

A: Roller chain is a kind of conveyance chain that is commonly used for the transference of useful work…

Q: A hollow circular shaft has an outer diameter of 100 mm and a wall thickness of 25 mm. The allowable…

A: Given- Hollow circular shaft- Outer diameter D=100 mm, Wall thickness t=25 mm, Shear stress- τ=125…

Q: A truss system carries a suspended 900kg crate at A. The cross sectional areas are 120 mm^2 and 150…

A: Given: A truss system Required: a. What is the axial force of the cable at B? b. What is the axial…

Q: Question-7 A horizontal circular curve with a centre line radius of 200 m is provided on a 2-lane,…

A: Given data: A horizontal circular curve with center line radius, R = 200 m For 2- lane, 2- way SH…

Q: Water flows under the sluice gate shown in the figure below. Determine the flowrate if the gate is…

Q: A simple log bridge in a remote area consists of 2 parallel logs with planks across them. The log…

A: Given data, Simply supported beam with plank resting on two logs The span of the bridge, l = 2.5 m…

Concept explainers

Landfills

The landfill is a site used for the disposal of waste materials. The landfill is a solid waste facility that is often known as a dumping ground. The image below shows a landfill site in Hawaii. Landfilling is the most ancient and common method used for the disposal of waste. For the landfill, a deep trench is constructed in an isolated place away from the city. The trench for landfills is designed properly after analyzing the total population and the waste generation per capita. The waste is dumped into the trench and after every layer of waste, a layer of soil is spread on the top of it.

Question

7.4 A groundwater sample from well #25 has 123 mg/L of Ca2+ and 21 mg/L of Mg2+. Using
this information, express the hardness of the groundwater sample in meq/L and mg/L as CaCO3.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

35 The data from a falling head test is shown. Diameter of standpipe: 6 cm. Initial Head: 90.97 cm. Duration of test: 17 min. Length of soil sample: 30.68 cm. Diameter of permeameter: 40 cm. If the soil permeability is 0.0089 cm/min, determine the final head (in cm.) of the permeability test. Round off to two decimal places.
pls ans soon as posssible During a constant head permeability test on a sand sample, 260ml of water was collected in 2 min. If the sample had a length of 100 mm, a diameter of 40 mm and a maintained head of 200 mm, what is the coefficient of permeability?
Calculate the CEC of a 100g soil sample that was found to contain the following cations: Ca2+ = 0.12g Mg2+ = 0.024g K+ = 0.078g Al3+ = 0.027g NH4+ = 0.036g H+ = 0.002g
Subj- civil Q. An undisturbed soil sample that is cylindrical in shape and measures 3 in (76.2 mm) in diameter by 6 in (152.4 mm) in length after oven drying weighs 2.57 lb (1.166 kg bulk) as opposed to 3.04 lb (1.38 kg mass). What are the densities and the weights in (a) wet and dry units? Additionally, find out the moisture content.
Answer both 1 (i) and (ii) 1) i) A 6 inch diameter well that fully penetrates a 40ft thick open aquifer is pumped at a rate of 100 gpm. The drawdown in the well is 22ft when a steady water level is established. The drawdown in a well 152ft distant is 12ft. Estimate the coefficient of permeabiliity of the soil deposit. ii) Discuss the validity of the answer obtained in 1( i ) and suggest how would you improve the test data obtained to produce a better value of k. Why?
In a hydrometer test, the results are as follows: Gs = 2.60, temperature of water = 24°C, R = 43 (K= 0.0132, L =9.2 cm) at 60 mins after the start of sedimentation. What is the diameter D, of the smallest-size particles that have settled beyond the zone of measurement at that time (that is, t = 60 min.)?
Calculate the coefficient of permeability in mm/s of a soil sample, 6 cm in height and 50 cm2 in cross sectional area, if a quantity of water equal to 430 ml passed down in 10 minutes, under an effective constant head of 40 cm. a.625 X 10^-2 b.5.9 x 10^-2 c.1.6 X 10^-5 d.2.15 x 10^-2
The moist unit weights and degrees of saturation of a soil are given in the table. y (kN/m3) S(%) 16.62 50 17.71 75 Determine: a. e b. Gs Show handwritten solutions.
In geological investigation, why is it important to determine the Groundwater conditions in the region?
Calculate the coefficient of permeability of a soil sample of 6 cm is height and 50cm2 in cross sectional area, if the quantity of water equal to 450ml passed down in 10minutes under an effective constant head of 40cm. On oven drying, the test specimen weigh 495g. Take Gs as 2.65, calculate the seepage velocity of water during test.
A permeability test is conducted with a sample of soil that is 60mm in diameter and 120mm in long. The head is kept constant at 225 mm. The flow is 1.5 mL in 6.5 min. What is the coefficient of permeability? (express result in m/yr).
For a falling-head permeability test, the following are given:length of specimen = 380 mmarea of specimen = 6.5 cm2k = 0.175 cm/minWhat should be the area of the standpipe for the head to dropfrom 650 cm to 300 cm in 8 min?