2) Use the Kspa expressions for CuS and ZnS to calculate the pH where you might be able to precipitate as much Cu2 as possible while leaving the Zn2 in solution, and find what concentration of copper would be left. Assume the initial concentration of both ions is 0.075M.

Answers

Answer 1

The pH where you might be able to precipitate as much Cu2 as possible will be any value that is less than 5.85.

How to illustrate the information?

The solubility product of salt is defined as the product of molar concentrations of ions in a saturated solution of it.

An ion will be precipitated if the ionic product exceeds the solubility product of the cation. In the case of Cu and Zn, the solubility product is greater for Zinc than Copper.

Also Cu will be precipitated in an acidic medium while Zn is precipitated in an alkaline medium. We have for CuS, K= S2 so S = 2.4495*10-8. For ZnS, S = 0.1414. So the lower the pH higher will be the amount of CuS precipitated.

If we are starting with 0.075M CuS and ZnS solution it will have 0.075 moles each of Cu2+, Zn2+, and S2. Since the anion concentration can be equated to POH, POH for Cus and Zns are 14.096 and 5.85.

The maximum precipitation will take place is any value which is less than 5.85.

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Related Questions

Suppose a relative has promised to give you $1,000 as a wedding gift the day you get engaged. Assuming a constant interest rate of 5%, consider the present and future values of this gift, depending on when you become engaged.

Answers

The present value and future value for the missing gaps in the table are; As gotten below

How to find the present value of an investment?

The given table is as follows;

                           Present Value Value in One Year Value in Two Years

Date Received  (Dollars)                  (Dollars)                 (Dollars)

Today                  1,000.00                  ?                       ?

In 1 year                   ?                 1,000.00                          ?

In 2 years                 ?           1,000.00                         ?

Let us find the value in one year today from;

FV1 = PV + PV(i)

FV1 = PV(1 + i)

FV1 = 1000(1 + 0.05)

FV1 = $1050

Let us find the value in two years today from;

FV2 = FV1 + FV(i)

FV2 = PV(1 + i)

FV2 = 1050(1 + 0.05)

FV2 = $1102.5

Let us find the present value in 1 year;

PV1 = FV_n(1/(1 + i)ⁿ)

PV1 = 1000(1/(1 + 0.05)¹)

PV1 = $950

Let us find the present value in 2 years;

PV2 = FV_n(1/(1 + i)ⁿ)

PV2 = 1000(1/(1 + 0.05)²)

PV1 = $907.3

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What do you think made the faculty member believe this was a Ponzi-type scheme

Answers

The faculty member believe this was a Ponzi-type scheme because it states that there is Higher Rate of Return if one has a higher return on investment and that it is about 44 % and even more in 12 days, if one invest.

What is a Ponzi Scheme?

A Ponzi scheme is known to be a form of an investment fraud that is said to pay their existing investors using funds obtained from other new investors.

Note that in the passage, It tells that a person could invest $6 to $6,000 and gets about 44 percent return in 12 days an this made the faculty member believe that it was a Ponzi-type scheme

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Select all of the following that DO NOT represent the three broad categories of analytics. (Check all that apply.)

Answers

The option that do not represent the three broad categories of analytics are:

User analyticsIntelligence analyticsAnomaly analytics

What are the common categories of data analytics?

There are known to be three types of analytics that is often used by businesses so that they can be able to drive themselves in decision making. They are:

A descriptive analytics- this  informs us what has already occurred.A predictive analytics that depicts or show us what could occur.A prescriptive analytics is one that tells us what should take place in the future.

Hence,The option that do not represent the three broad categories of analytics are:

User analyticsIntelligence analyticsAnomaly analytics

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Mr. Wilcox has been enrolled in Lexington Private Fee-for-Service (PFFS) Medicare Advantage Health Plan (Lexington) for several years

Answers

The way this would affect Mr. Wilcox is that Lexington can allow for Mr. Wilcox's continued enrollment for up to 12 months whether or not he is in a visitor/traveler (V/T) program.

What is the Lexington health Medicare plan?

Lexington health Medicare plan is the health plan that allows the person to have an eligible medical coverage for themselves and their families.

To move to another place within this period their would be the continued enrollment for the period.

Complete question

Mr. Wilcox has been enrolled in Lexington PFFS Medicare Advantage Health Plan (Lexington) for several years. Recently, Mr. Wilcox decided to spend time with his children who live in another state that is not in Lexington's service area. In the future, he may relocate near his children permanently. How does this move to another service area impact his PFFS MA coverage?

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A single-price monopolist is a monopolist that sells each unit of its output for the same price to all its customers. Refer to Exhibit 1. A single-price monopolist earns a total profit of __________ when it produces and sells 20 units of its good.

Answers

From the information provided, A single-price monopolist earns a total profit of $80 when it produces and sells 20 units of its good. See the attached for more information.

How do we arrive at $80?

Total profit  = revenue - cost

Revenue  = price x number of units sold

Revenue  at 20 units  =

20  x9 = $180

Given that Total cost at 20 units is $100, thus,
Total Profit  = 180 - 100

= $80.

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From the feminist perspective, the socialization of women with multiple social identities inevitably affects all of the following, except:

Answers

From the feminist perspective, the socialization of women with multiple social identities inevitably affects all of the following, except: engendered lives.

What is the feminist perspective?

This is the perspective that is shared in the society where it is said that men and women are to be treated the same way in the society.

The perspective advocates having equality of danger in the society with no special favors given to any. The perspective helps to highlight the issues that are not looked upon in today's social society.

It talks about the gender subordination that women all over the world have suffered due to their gender and the reasons why there are gender oppressions in the society that we live in today. An example of this would be when women are excluded from clinical drug trials.

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The student's lab manual says to mix 50 mL of his 2.0 M CaCl2 solution with 50 mL of a 3.0 M aqueous solution of sodium carbonate (Na2CO3). (18 points) i. Write a balanced chemical equation to show the reaction. Include state symbols. (4 points)

Answers

The balanced equation for the reaction is [tex]CaCl_2 (aq) + Na_2CO_3 (aq) --- > CaCO_3 (s) + 2NaCl (aq)[/tex]

Chemical equation

Both calcium chloride and sodium carbonate are soluble salts. When they react, insoluble calcium carbonate is produced along with soluble sodium chloride.

The balanced equation of the reaction along with the state of each component is as follows:

  [tex]CaCl_2 (aq) + Na_2CO_3 (aq) --- > CaCO_3 (s) + 2NaCl (aq)[/tex]

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The list-style-type property changes the style of bullets points. which of these creates this style bullet: o

Answers

It should be noted that a circle creates a bullet that is an unfilled disc.

What are bulleted points?

A bullet point simply means a symbol that is used in writing to introduce an item in a list.

It should be noted that a commonly used symbol to represent a bullet point is a centered dot (•). Despite this, many different symbols and characters can be used in bullet point lists.

Also, bulleted lists even use numbers and letters. In typography, a bullet or bullet is typographical symbol to introduce items in a list.

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Complete question:

The list-style-type property changes the style of bullet points. What creates a bullet that is an unfilled disc?

In which two parts of Medicare is enrollment generally automatic for eligible consumers who are receiving Social Security benefits, UNLESS they choose to delay their coverage

Answers

In the parts A and B of the Medicare, the enrollment generally automatic for eligible consumers who are receiving Social Security benefits.

What is the Medicare?

This is the social security program that is offered in the United States to the citizens of the nation. The goal is to provide health insurance to the people in order to ensure a better health in the nation.

The part A of Medicare is known to contain inpatient care in the hospitals as well as care from skilled nursing in the facilities. The part B is known to cover the part that has to do with the payment of the services that you would receive from the medical doctors.

The social security administration is the administration tat brought about Medicare in the country. This was started by President Roosevelt. The goal is to help to subsidized the payment of health care by those that are of 65 and older in the society, eligible younger persons and those with diseases.

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who are the actors in the meningitis b vaccine commercials

Answers

The actors in the meningitis b vaccine commercials is known to be  Sabrina Texidor, Soleil Moon Frye and Shakha Gillin.

Who is Sabrina on the meningitis B commercial?

GSK was known to have done a re-ups meningitis B campaign and it was one that was made up of Soleil Moon Frye with her daughter Poet, and  Shakha Gillin.

he actors in the meningitis b vaccine commercials is known to be  Sabrina Texidor, Soleil Moon Frye and Shakha Gillin.

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A matrix maps a point P to a point Q if it maps the position vector of P to the position vector of Q. To figure out where a matrix sends a set of points, we apply the matrix to every single point in our set and then put all the resulting points together

Answers

The transformation matrix changes a vector into another vector into a two-dimensional or three-dimensional space.

What is a Matrix?

This refers to the rectangular array that is used to represent a mathematical property and has rows and columns.

Some of the commonly used transformations in matrices are:

stretching, squeezing, rotation, reflection,  orthogonal projection.

Hence, we can see that your question is incomplete as you did not include the matrices, so a general overview is given to you to get a better understanding of the concept.

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The ________ gland is a modified sudoriferous gland that secretes wax.

Answers

The ceruminous gland is a modified sudoriferous gland that secretes wax.

What is a gland?

A gland s a group of specialized cells in a tissue that have particular roles associated with the secretion of a biological substance (.e., a hormone).

The two main classes of glands are exocrine glands and endocrine glands, which are classified according to the manner in which release their secretions.

The ceruminous gland is a special type of gland specialized to secrete a substance called wax whose function is to protect the auditive canal.

In conclusion, the ceruminous gland is a modified sudoriferous gland specialized to secrete a substance known as wax.

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A nurse is teaching a client who is about to start therapy with alendronate (Fosamax) to treat osteoporosis. Which of the following adverse effects should the nurse instruct the client to report

Answers

The adverse effect that the nurse has to instruct this patient to report would have to be joint pain.

What is  osteoporosis?

This is the ailment that people usually suffer due to the fact that their bones have become brittle. The bone becomes fragile because their is a lack of calcium as well as vitamin D.

The human body is usually known to replace certain bone tissues. When an individual has this type of condition, what it means is that they would not be able to keep up with the replacement of old bone tissues when new bone is created.

This ailment does not have any cure. The management has to come from eating and maintaining a healthy diet as well as exercising properly to prevent weak bones and also strengthen your bones.  Calcium supplements would also be a way of taking care of the issue.

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does canvas offer communication with families as a teacher

Answers

Answer:

hdjrjejnenwnns

Explanation:

kkkdkjdjdjsjkeksjsj

which statement best describes ethical behavior in the united states

Answers

The  statement that describes ethical behavior in the U.S. is C. We can find common moral values that many Americans uphold, including respect for human life, self-control, honesty, integrity, and courage.

What is ethical behavior?

ethical behavior serves as the norms as well as the good morals that can be associated to a particular organization or a country.

In this case, ethical behavior in the U.S. is that there are common moral values that many Americans uphold, including respect for human life.

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CHECK THE COMLETE QUESTION BELOW:

Which of the following statements describes ethical behavior in the U.S.?

A. Due to the diverse cultures that make up the U.S. it is difficult to identify common standards of ethical behavior.

B. The only common standards of ethical behavior in the U.S. are reflected in religious teachings.

C. We can find common moral values that many Americans uphold, including respect for human life, self-control, honesty, integrity, and courage.

D. Americans will generally describe the golden rule as the only statement of value that they uphold.

Where can you pin frequently used apps for easy access

Answers

The task bar is the part of your laptop where you can pin the frequently used apps.

What is the taskbar?

This is the part of the system that is usually at the bottom of the laptop screen.

On the task bar, there are icons of apps that are there for a user to easily access whenever they need to. The task bar is usually found at the bottom of the windows computer.

But the computer also has several option that may require a person to change the location of the taskbar if they want. The apps that the individual works with often are pinned here. The goal is to avoid having to search the computer all the time whenever you need to work.

To get an image to the task bar, all you have to do would be to drag it from the computer screen to the bottom of the screen and leave it there.

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Which of the following is true of the design elements in an effective presentation

Answers

The true statement is; design elements in an effective presentation must must be clear and pass a message easily.

What is design elements in presentations?

Presentation design is a combination of certain elements,  such as the ones listed below;

text optimization, font selection, color background selection, icon selection, and figures

Thus, design elements in an effective presentation must must be clear and pass a message easily.

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Select the order in which the vertices are visited in a pre-order traversal of the tree shown below.Question 5 options:e, i, b, h, f, a, c, d, ge, i, b, h, f, a, d, c, gb, i, f, h, a, d, g, c, eb, i, f, h, d, g, c, a, ePrevious PageNext Page

Answers

Based on the vertices and the pre-order traversal order the tree would be visited is e, i, b, h, f, a, c, d, g.

What order will the tree be visited?

When using the pre-order traversal, the order would be from the root child node to the left child node to right child node.

The root node is the highest node which is e. From here you'll then proceed to the left roots first which means you'll go to i and then b.

From there you go to h and then f. The next nodes would be a and c.

Continuing from left to right, you'll then go to d and then g.

You'll therefore start from "e" and move to "i" and then "b" to "h" and then "f" and "a" to "c" and then to "" and finally to "g"

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A nurse is assessing four female clients for obesity. Which of the following clients have manifestations of obesity

Answers

The client that will have manifestations of obesity is; C. A client who weighs 28% above ideal body weight

How to detect Obesity in a Patient?

Obesity is defined as a physical condition where the BMR (Basal Metabolic Rate) is over 30%. There are few factors that contribute to obesity, such an over average daily calories intake, the lack of physical exercise and in general the lack of healthy habits in the current lifestyle.

In order to reduce obesity, it is necessary to learn what kinds of foods are good for our body and what are not: there are guidelines from different association, such as the American Society for Nutrition, that indicates that is possible to reduce obesity is possible if people are going to start eating healthy and exercise regularly.

Now, looking at the questions, the client that will have manifestations of obesity is the client in option C because she has a BMR rate above 28%

The missing options are;

a. A client who has a body fat of 22%

b. A client who has a waist circumference of 81.3 cm (32 in.)

c. A client who weighs 28% above ideal body weight

d. A client who has a BMI of 28

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Logically which of the following should cast the most doubt on the relationships depicted by an evolutionary tree

Answers

Logically as the tree featured no creatures that ate the same things., this should cast the most doubt on the relationships depicted by an evolutionary tree

This is further explained below.

What is the evolutionary tree?

Generally, A phylogenetic tree's branching structure reveals how species or other groupings of organisms developed from a common ancestor across time. If two species have a recent common ancestor, they are more closely related than if the two species share a distant common ancestor.

In conclusion, The tree featured no creatures that ate the same things.

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Complete question

Relationships between DNA sequences among the species did not match relationships between skeletal patterns. Logically, which of these should cast the most doubt on the relationships depicted by an evolutionary tree?

None of the 10 largest cities in Texas have a

Answers

None of the 10 largest cities in Texas have a : strong mayor form of government.

What is a mayor form of government?

This is the government that has a mayor as the head of the municipal government or area.

He is the chainman of the council and helps to perform both ceremonial and administrative functions in that area.

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Mrs. Kelly, age 65, is entitled to Part A but has not yet enrolled in Part B. She is considering enrollment in a Medicare Advantage

Answers

In order to join the Medicare Advantage plan, she also must enroll in part B to allow joining the plan.

What is a medicare?

This is a public program that provides a health insurance to individuals that are aged 65 and over or with a disabilities.

Hence, she also must enroll in part B in order to join the Medicare Advantage plan.

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Suppose Marco currently has two candy bars. You tell Marco you will give him either a soda, which gives him 22 utils of happiness, or two additional candy bars.

Answers

The choice that Marco would likely prefer is soda.

What is Marginal Utility?

This refers to the satisfaction that is gotten when one extra unit of product or service is consumed or used.

Hence, we can see that from the given table, we can see how Marco feels about chocolate candy bars:

a. TU: MU:

0 -

25 25

42 17

54 12

62 8

66 4

65 -1

Therefore, he would select a soda because it would give him 22 utils of happiness.

Therefore, the unit of satisfaction that Marco exhibited based on the consumed goods shows that he would select a soda as he would have the highest utils of happiness that cannot be gotten from other products/goods.

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A nurse is performing glucose checks for a client in the progressive stage of shock. What glucose range would the nurse expect to see for the best outcome with the client

Answers

The glucose range that the nurse expect to see for the best outcome with the client will be 140 - 180 mg/dL.

How to illustrate the information?

It should be noted that a nurse is an individual who looks after the sick people in a clinic or hospital.

In this case, tight glycemic control is no longer recommended as the hypoglycemic events that are associated with the regulation of right contol in I'll patients result in adverse patients outcome.

Therefore, it is important to maintain serum glucose that's between 140 and 180 mg/dl with insulin therapy and close monitoring with regards to the I'll patients.

Here, the glucose range that the nurse expect to see for the best outcome with the client will be 140 - 180 mg/dL. This is because the client is in the progressive stage of shock.

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The nurse is performing glucose checks for sliding scale four times per day for a patient in the progressive stage of shock. What glucose range would the nurse expect to see for the best outcomes in this patient?

a) 160-190 mg/dL

b) 140-180 mg/dL

c) 120-140 mg/dL

d) 100-120 mg/dL

Judith and Ken are trying to conceive. Which of these does Ken NOT have to avoid in order to maximize the health of his sperm

Answers

An action or event which Ken does not have to avoid in order to maximize the health of his sperm is computer usage.

What is reproduction?

Reproduction can be defined as a biological process through which all living parent organisms produce their offspring, especially through mating.

This ultimately implies that, reproduction is a biological process through which the spermatozoa from the reproductive organ of a male fertilizes the eggs located in the reproductive organ of a female, so as to enable her to conceive and give birth to an offspring of their specie.

During the reproduction process, it is important to note that a reproductive combination between living parent organisms which would produce hybrids is usually when members of closely-related species reproduce.

In conclusion, we can infer and logically deduce that computer usage is an action or event which Ken does not have to avoid in order to maximize the health of his sperm.

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H 3 C C H 2 C H 2 N H C H 2 C H 3 Spell out the full name of the compound.

Answers

The correct IUPAC name of the compound is given as 4-ethyl-2-methyl hexane.

What is the name of the compound?

The name of a compound must be obtained by the use of IUPAC nomenclature. We know that in the IUPAC nomenclature, the names of the compounds is written by the use of prefixes, suffixes and numbers.

Thus the correct IUPAC name of the compound is given as 4-ethyl-2-methyl hexane.

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Water buildup, ice damming, and a fascia damaged by moisture are common ______ issues.

Answers

Water buildup, ice damming, and a fascia damaged by moisture are common roof issues.

What are roof issues

This is a term that is used to refer to al of the possible reasons that may lead to problems on a roof. They are the damages that the roof would have based on certain phenomena that have occurred on it.

When there is too much water on a roof that does not go off, this is an issue. If it is an iron roof, this may lead to leaking because after sometime the roof would become rusty and it would start to break off. On other types of roofs, it may become moist for a very long time before the damage would start to set in.

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3. The average price paid to dealers for a given type and model of a vehicle is published in the

Answers

The average price paid by an individual (driver) to dealers as payment for a given type and model of a vehicle is generally published in the blue book.

What is price?

Price can be defined as an amount of money which is primarily set by the seller of a product, and it must be paid either in full or part by a buyer to the seller, so as to enable the acquisition of this product.

What is a blue book?

A blue book can be defined as a type of publication that is designed to estimate the value of automobile vehicles because it comprises information such as average price, type and model.

In this context, we can infer and logically conclude that the average price paid by an individual (driver) to dealers as payment for a given type and model of a vehicle is generally published in the blue book.

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plaintiffs in sexual harassment do not have to prove debilitating psychological deterioration

Answers

The statement "plaintiffs in sexual harassment do not have to prove debilitating psychological deterioration" is true.

What is the judgement for the plaintiff?

In legal terms, the word 'Plaintiff' is used to denote "the party or individual who files a suit against an accuser or the defendant."

Now, in this case of the question about plaintiffs, it has to be said that in sexual harassment they do not have to prove debilitating psychological deterioration. This is because in legal guardianship determinations, the burden of proof is on the person seeking guardianship. The majority of juvenile offenders grow up to become chronic adult offenders.

Thus, from the above statement and explanation, we can say that the statement "plaintiffs in sexual harassment do not have to prove debilitating psychological deterioration" is true.

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which of the following steps is not performed when a flow is processed

Answers

The step that is not performed when a flow is processed is option D. none of the above. All other following steps such as option A. Process map is used to show users the steps to perform before moving on to the next step, option B. Process flow shows users which task to go after they complete the current task. and option D.

What is a process flow?

A process flow is a series of steps you and your team go through to achieve your goal. Visualizing your process flows can help you uncover redundancies, repetitive tasks, and bottlenecks. You can visualize process flows using timelines or workflow diagrams.

Therefore, the correct answer is as given above

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The complete question goes thus:

which of the following steps is not performed when a flow is processed

A. Process map is used to show users the steps to perform before moving on to the next step.

B. Process flow shows users which task to go after they complete the current task.

C. Processes and sub processes can be viewed as the transformation from high level process plan to project-specific model by identifying and organizing the major steps of the process, and providing the details of sub processes if necessary.

D. none of the above

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given two sets a and b represented as sorted sequences, describe an efficient algorithm for computing ab, which is the set of elements that are in a or b, but not in both. What is the cubic polynomial in standard form with zeros 5, 3, and 4? Using the sources and your knowledge of U.S. history,explain one motive for U.S. imperialism and explainone way that territories were affected by U.S. influenceduring the Age of Imperialism. according to the heckscherohlin model, chile will have a comparative advantage in lemons if lemons are _____ in the factors in which chile is _____.abundant intensive; imported scarce; imported intensive; inexpensive this important citric acid cycle intermediate is also formed during gluconeogenesis (from pyruvate): TRUE OR FALSE some view the period between the end of the first wave of rock and roll and the arrival of the beatles as a kind of ""dark age"" in rock history. congress tasked nasa with searching for near-earth objects because choose one: a. congress was trying to spend some money. b. they are moving fast. c. they might impact earth, as others have in the past. d. they are close by and easy to study. Clem is married and is a skilled carpenter. Clem's wife, Wanda, works part-time as a substitute grade school teacher. Determine the amount of Clems expenses that are deductible for AGI this year (if any) under the following circumstances: (Leave no answer blank. Enter zero if applicable.)clem and wanda own a garage downtown that they rent to a local business for storage. this year they incurred expenses of $1,400 in utilities and $875 in depreciation. any type of obstruction in the ureter or bladder may cause Pseudolarix amabilis produces seeds but not flowers. Physcomitrella patens has leaves but not roots. To which groups do they belong? A. B. Pseudolarix amabilis coniferophyta filicinophyta coniferophyta angiospermophyta Physcomitrella patens filicinophyta angiospermophyta bryophyta coniferophyta . C. D. Explain ways that people directly or indirectly affect the nitrogen cycle. development of new vaccines has slowed in recent decades. this is due to: Suppose that you want to design an experiment to study the proportion of unpopped kernels of popcorn.(i)State and explain the pre-experimental planning for this experiment designs(ii) State two major sources of variation that would be difficult to control in this experiment. for the genotype shown below, which best describes the expression of the b-galactosidase gene. i o z / f is o the study of death and dying can help to put previously unsettling experiences into _____. A function is given. h(t) = 2t2 t; t = 5, t = 8. Determine the net change between the given values of the variable. determine the theoretical atom economy percent nahco3 Calculate the standard potential, E^degrees, for this reaction from its equilibrium constant at 298 K.X(s) + Y^4+(aq) X^4+(aq) + Y(s) K=3.90x10^5E^degree =?V Below, a two-way table is givenfor student activities.Sports Drama Work Total7325Sophomore 20Junior20Senior25Total135Find the probability the student is in drama,given that they are a sophomore.P(drama | sophomore) = P(drama and sophomore) [?]%P(sophomore)Round to the nearest whole percent.= An older adult client with restless legs syndrom begins taking melatonin at bedtime. When the effectiveness of the herb, which assessment should the nurse complete? A. Determine sleep patterns B. Palpate pedal pulse volume C. Observe for peripheral edema D. Assess anxiety level