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

Together, natural resources and ecosystem services are referred to as

Answers

Answer:

natural capital

Explanation:

The answer should be natural Capital.

why is Pluto called a ,"dwarf planet" ?​

Answers

Answer:

Pluto is called a dwarf planet because it does not meet the three criteria set forth by the International Astronomical Union (IAU) for a full-sized planet.

These criteria are:

It must be in orbit around the Sun.It must be massive enough for its self-gravity to overcome rigid body forces so that it assumes a hydro-static equilibrium (nearly round) shape.It has cleared the neighborhood around its orbit.

Pluto meets the first two criteria, but it does not meet the third. The Kuiper Belt is home to many other objects that are similar in size to Pluto, and these objects share Pluto's orbit. This means that Pluto has not cleared its neighborhood of other objects, as a planet is supposed to do.

As a result of this, Pluto was reclassified as a dwarf planet in 2006. There are now five dwarf planets in our solar system: Pluto, Ceres, Eris, Makemake, and Haumea.

Answer and Explanation:

Pluto is called a "dwarf planet" because it does not meet the criteria to be classified as a full-fledged planet. In 2006, the International Astronomical Union (IAU) redefined the definition of a planet, which led to Pluto being reclassified as a dwarf planet. Here are the main reasons why:

1. Size: While Pluto is larger than some moons in our solar system, it is much smaller than the eight traditional planets like Earth, Jupiter, and Saturn. Its size is comparable to other objects in the Kuiper Belt, a region beyond Neptune where many icy bodies reside.

2. Orbit: Unlike the eight planets that have relatively clear paths around the Sun, Pluto has a more elongated and inclined orbit. This means it has a more irregular path and crosses the orbit of Neptune at certain points. This is different from the regular, more circular orbits of the traditional planets.

3. Neighborhood: Pluto is part of a region called the Kuiper Belt, which consists of numerous icy bodies and small objects. This region is distinct from the inner solar system where the eight traditional planets reside. The presence of many similar-sized objects in its vicinity further influenced the decision to reclassify Pluto.

By considering these factors, the IAU determined that Pluto did not meet the criteria to be classified as a planet. Instead, it was designated as a dwarf planet, a new category that acknowledges its unique characteristics and its place in the Kuiper Belt.

It's important to note that this reclassification sparked some debate and controversy among astronomers and the public. However, the IAU's decision to classify Pluto as a dwarf planet is the current scientific consensus.

By artificial selection, certain traits have been selected to be passed on to the offspring in certain tomato plants. Which traits have been strongly influenced by genetics in these tomato plants?

Responses

Answers

Answer:

Fruit size and shape: Some tomato varieties have been bred to produce larger or smaller fruits with different shapes, such as round or oblong.Color: Tomato plants have been bred to produce fruits with different colors, such as red, yellow, orange, green, or even purple.Disease resistance: Tomato plants have been bred to resist certain diseases, such as verticillium or fusarium wilt, or pests such as the tomato hornworm.Flavor: Tomato plants have been bred to produce fruits with different flavors, such as sweet, tangy, or acidic.

P,Q,R,S and T are sitting in a row facing North.P is sitting just next to Q and R is sitting just next to S.S is not sitting with T who is on the left end of the row.R is on the second position from the right.P is to the right of Q and R.Who is sitting in between Q and R?

Answers

The seating arrangement is the logical arrangement of objects or people. To answer the questions, one must either perform the arrangement or decode the predefined arrangement using logical analysis.

How are seating plans determined?Students must arrange one group in the first row and another in the second row. The people in these rows are usually facing each other. Typically, one row faces north and the other row faces south.The seating arrangement is the logical arrangement of objects or people. To answer the questions, one must either perform the arrangement or decode the predefined arrangement using logical analysis. If it says A is sitting next to B, it means that A and B are sitting together. B could be to A's right or left. According to instructional communication theory, seating arrangements can influence how instructors communicate with students and how students interact with one another, thereby influencing engagement, motivation, and focus (McCorskey and McVetta, 1978).

Given,

P,Q,R,S and T are sitting in a row facing North.

1)  R is sitting just next to S

2) R is on the second position from the right.

3) Only T is left so the final sitting arrangement is:

Hence, T is sitting at the second position from the left end.

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P,Q,R,S and T are sitting in a row facing North.P is sitting just next to Q and R is sitting just next
P,Q,R,S and T are sitting in a row facing North.P is sitting just next to Q and R is sitting just next
P,Q,R,S and T are sitting in a row facing North.P is sitting just next to Q and R is sitting just next

anyone has last minute tips for the SAT on saturday?

Answers

Answer:

Start early. We know that ideally you'd like all the time in the world to prepare for a test, but that's not a luxury high school students have. ...

Study with Official SAT Practice on Khan Academy. ...

Take a full-length practice test. ...

Pay attention in class. ...

Know what to expect on test day.

Explanation:

fill in the blanks to describe nicolas and santi day at the beach

fill in the blanks to describe nicolas and santi day at the beach

Answers

The completed sentence is;

Nicolas feels like he is having a wonderful day at the beach.

Meanwhile, Santi thinks about how he has visited the beach often

Now he wishes he could go to the mountains.

What is the explanation for the above?

In the above text, one  person  - Nicholas rarely visits the beach while Santi  if a frequent visitor.

For Nicholas, he is having a great experience while Santi is sated and wish to explore more leisurely locations.

Hence it is correct to state that:

Nicolas feels like he is having a wonderful day at the beach.

Meanwhile, Santi thinks about how he has visited the beach often

Now he wishes he could go to the mountains.

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Consider the following figure ABDC with diagonal BC. Sides AB and DC are congruent angle A is congruent to angle D and sides AC and DB are congruent

Answers

Quadrilateral ABCD is both a parallelogram and a rhombus.

The figure ABDC with diagonal BC, with the congruent sides AB and DC, angle A is congruent to angle D, and sides AC and DB are congruent is a parallelogram. This is based on the definition of a parallelogram which is a quadrilateral with opposite sides that are parallel and congruent to each other.

Also, opposite angles of a parallelogram are congruent. Therefore, angle A and angle C are congruent. Additionally, angle B and angle D are also congruent because they are opposite angles of a parallelogram.The diagonal of a parallelogram cuts it into two congruent triangles.

Triangle ABD and triangle CBD are congruent triangles, since their sides are congruent, and angles A and D, and angles B and C, are congruent by the given information.

Therefore, their included angles ABD and CBD are also congruent. Because their opposite sides are congruent, quadrilateral ABCD is a rhombus. A rhombus is a parallelogram with all sides congruent. This implies that sides AB, BC, CD, and DA are all equal.

In conclusion, quadrilateral ABCD is both a parallelogram and a rhombus.

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In the context of the passage, what is the main effect of the words

"churned," "cloaked," "scant," and "harsh," as they are used in the

opening lines of the passage?

A

They establish a stark contrast with the beauty of

life as described later in the passage,

***

They highlight a difficulty in understanding how

early life formed.

They exaggerate the challenges faced by early

life-forms.

They build suspense that is resolved later in the

passage
.

Answers

In the context of the passage, the main effect of the words is that they establish a stark contrast with the beauty of life as described later in the passage.

How to Read a Passage in SAT Reading?

Carefully read the entire passage.

Start to recognize the author's tone and point of view.

If necessary, reread the passage several times to ensure clear comprehension (understanding) of ideas.

Take note of and disregard introductory sections of the author's work.

Highlight key phrases and make notes in the margins.

Take note of the author's emphasis or approach.

Assume the significance of ideas developed by the author through the use of supporting facts and examples.

It is preferable if you do not use the author's specific examples, figures of speech, or quotations in developing your précis. If you believe it is necessary, you may use direct quotes on occasion. Just don't make it a habit.

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After a brief and violent ______ that ousted the president, GeneralMonsanto declared himself the dictator of the country.
a. upbraiding
b. nuance
c. solicitation
d. coup​

Answers

After a brief and violent d. coup​ that ousted the president, GeneralMonsanto declared himself the dictator of the country.

What is coup?

A coup d'état, commonly known as a coup, is an illegal and open attempt to remove the current leader by members of the military or other government elites.

A self-coup occurs when a leader attempts to use illegal tactics to maintain control after gaining it legitimately. The unexpected, violent takeover of an established government by a small group is known as a coup d'état, sometimes known as a coup. Control of all or a portion of the armed forces, police, and other military components is the main requirement for a coup.

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someone please explain to me what does the black and white part of the anser A and B means

someone please explain to me what does the black and white part of the anser A and B means

Answers

The graph that represents the possible number of orange fish, k, and blue fish, j. that they can put in the tank is graph C.

How to explain the information

Let k be the number of orange fish and j be the number of blue fish. We know that k + j <= 110 and k >= 20 + j. The first inequality represents the total number of fish, and the second inequality represents the minimum number of orange fish.

We can graph the first inequality by drawing a line with a slope of -1 and a y-intercept of 110. The second inequality represents a half-plane below a line with a slope of 1 and a y-intercept of 20.

The only graph that satisfies both inequalities is graph (c).

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A rectangular prism with a length of 50 feet, width of 30 feet, and height of 20 feet. A rectangular pyramid with a base of 50 feet by 30 feet and height of 8 feet. Mr. Newman works as an architect. He created a solid foam model of a building that he is designing. How much foam was needed to make the model? 12,000 cm3 30,000 cm3 34,000 cm3 42,000 cm3

Answers

The foam that was needed to make the model is C 34,000 cm³

How to calculate the value

The volume of a rectangular prism is length x width x height. The volume of the rectangular prism is 50 x 30 x 20 = 30,000 cubic feet.

The volume of a rectangular pyramid is (1/3) x base area x height. The base area of the rectangular pyramid is 50 x 30 = 1500 square feet. The volume of the rectangular pyramid is (1/3) x 1500 x 8 = 4000 cubic feet.

The total volume of the foam model is 30,000 + 4000

= 34,000 cubic feet.

So the answer is 34000

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How can forces create naturally occurring patterns within a system?



No online answers please

Answer needed ASAP

Answers

Forces can create naturally occurring patterns within a system through the process of self-organization. Self-organization is a process where a system spontaneously arranges itself into an ordered pattern without any external guidance or control. This process occurs when the forces within the system interact in a way that causes the system to reach a state of minimum energy or maximum stability.

For example, the hexagonal shape of snowflakes is the result of the forces of surface tension and temperature gradients in the atmosphere. The branching patterns of trees are the result of the forces of growth and development. The formation of sand dunes is the result of the forces of wind and gravity.

In each of these cases, the forces within the system interact in a way that leads to the emergence of a pattern or structure. These patterns are not pre-determined or guided by an external agent, but rather arise spontaneously from the interactions between the forces within the system.

Find the probability of getting 6 or more girls in 8 births.

Answers

Answer:

The probability of getting a girl is 12 . The probability of getting 6 girls is therefore (12)6 . Since we have 6 girls, we also need to find the probability of getting 2 boys, which is (12)2 . There are (86)=28 ways to get 6 girls out of 8 children.

Explanation:

Answer:

Explanation:

P(X > 6) = ?

P(X > 6) = P(X = 6) + P(X = 7) + P(X = 8)

P(X > 6) = 0.118 + 0.035 + 0.004

P(X > 6) = 0.157

Thus the probability of getting 6 or more girls in 8 births is 0.157

60% of the students at the high school play sports, 14% of the students who play sport play baseball. What percent of the students in the school play baseball?​

Answers

Answer:

8.4%

Explanation:

for questions like this you just multiply the percetages together. So in this case 0.6*0.14=0.084

Review the forth stanza of the poem, at the bottom of page 3. How does the allusion to Eden impact the poem

Answers

Answer:

I’m not completely sure abt this one but I’m guessing that it’s “it conveys the sense of security and peace the speaker experiences in nature

Explanation:

I’m not rlly sure about this answer but I’m taking the quiz rn

It Is Science I Could Not See Science So I Chose Sat Help

It Is Science I Could Not See Science So I Chose Sat Help

Answers

Answer:

See Explanation

Explanation:

Nucleus = the central part of the atom containing protons and neutrons

Electron Cloud = The area of the atom surrounding the nucleus where electrons can be found

Electron = A negatively charged particle that orbits the nucleus of an atom

Proton = A positively charged particle located in the nucleus of an atom

Neutron = A neutral particle located in the nucleus of an atom

Determinar tres numeros Consecutivos que suman 444?

Answers

La suma de los siguientes números consecutivos:  147, 148 y 149 es igual a 444.

Consecutive Numbers

These numbers are represented by numbers that continuously follow each other in the order from smallest to largest. See some examples:

a) 1,2,3;

b)500,501,502.

All the three number are unknown, then you should represent these numbers as: x, x+1 and x+2.

The question informs that the sum of the three numbers is equal to 444. Thus, you can convert this information in an algebraic expression.

x+x+1+x+2=444

3x+3=444

3x=444-3

3x=441

x=441/3

x=147

If x=147, you will have:

x+1=147+1=148

x+2=147+2=149

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Industrialization and urbanization aided social change because these changes




A.



made it easier for people to organize and exchange ideas.




B.



made people more open to new and revolutionary ideas.




C.



forced employers to pay more, so people could focus on social change.




D.



required employees to be educated, and thus promoted social progress

Answers

Answer:

a

Explanation:

What happens to a given mass of water as it is cooled from 4˚c to zero?.

Answers

Answer:

What happens to a given mass of water as it is cooled from 4°C to zero? d. Neither expands, contracts, nor vaporizes

Explanation:

In Islam, who is prophet Muhammad (peace be upon him) ?

Answers

the prophet Muhammad is called Allah

In Islam, Prophet Muhammad (peace be upon him) is considered the last and final prophet sent by God (Allah) to guide humanity. He is revered as the messenger of Allah and is considered the seal of the prophets, meaning that no prophet will come after him.

Prophet Muhammad (pbuh) was born in the city of Mecca, in present-day Saudi Arabia, in the year 570 CE. At the age of 40, he received the first revelation from Allah through the Angel Gabriel, which marked the beginning of his prophethood. The revelations continued over a period of 23 years, and they were later compiled into the holy book of Islam, the Quran.

Prophet Muhammad (pbuh) preached monotheism (the belief in one God) and called people to worship Allah alone and follow His guidance. He taught the importance of faith, prayer, charity, fasting, and pilgrimage, among other teachings and principles that form the foundation of Islam.

Muslims regard Prophet Muhammad (pbuh) as a role model and strive to follow his example in their personal and communal lives. They hold great love, respect, and reverence for him and frequently use the phrase "peace be upon him" (pbuh) as a sign of honor and respect when mentioning his name.

what is the value of c in the equation

Answers

Answer:The value of c in the equation y = mx + c represents the y-intercept of the line1. The value of 'c' can be easily identified after transforming any equation in the form y = mx + c, and the constant terms represent the value of 'c'1. In the formula c²=a²–b², c represents the point on the y-axis at which the graph connects

Explanation:

What symbols represent James in James and the Giant peach?

Answers

In "James and the Giant Peach," James is not represented by a single symbol. However, there are several recurring motifs and themes associated with James throughout the book. For example, James is often associated with the color green, which represents growth, renewal, and hope. Additionally, James is associated with insects, such as the grasshopper and the centipede, which represent his connection to the natural world and his own personal growth and transformation. Finally, the peach itself can be seen as a symbol of James, as it represents his journey from a lonely and unhappy life to a world of adventure and new experiences.

Which of the following expressions is equivalent to 25r^4+40r^2s+16s^2?

A. (5r+4s)^2
B. (5r^2+4s)^2
C. (5r+4s^2)^2
D. (5r^2+4s^2)^2

Answers

Answer:

(5r^2+4s)^2

Explanation:

its using the mathematical theory

Answer:

B

Explanation:

\(25r^4+40r^2s+16s^2 \\ (5{r}^{2} ) {}^{2} + 40 {r}^{2} s + (4 {s})^{2} \\ (5 {r}^{2} ) {}^{2} + 2 \times 5 {r}^{2} \times 4s + (4s) {}^{2} \\ (5 {r}^{2} + 4s) {}^{2} \)

In the third step we use (a+b)^2 formula.

5r^2 is a

and 4s is b

(02.06 LC) Which economic model reveals the variety of options for what to do with your scarce time? O Supply curve Demand curve O Income distribution curve O Production possibilities curve ( 02.06 LC ) Which economic model reveals the variety of options for what to do with your scarce time ? O Supply curve Demand curve O Income distribution curve O Production possibilities curve​

Answers

Answer: production possibilities curve

Explanation: A production possibilities curve, or PPC, shows the relative amounts of two things you can "produce" with the time you have. Time is a scarce

resource. A PPC shows the possibilities of how much you could accomplish of each task with your time

Answer: production possibilities curve

Explanation:

The mean and standard deviation of marks obtained by 40 students of a class in three subjects Mathematics, Science and Social Science are given below.

Subject

Mean

SD

Mathematics

56

12

Science

65

14

Social Science

60

10


Which of the three subjects shows highest variation and which shows lowest variation in marks?

Answers

Answer:

Dat hard iicdsfiuzhdnfvnvdfvy

Predict the amount of profit, in dollars, the district office will make if 1,200 people attend the School Fair.

Predict the amount of profit, in dollars, the district office will make if 1,200 people attend the School

Answers

Based on the table, the school fair makes $100 per person in attendance. If 1,200 people attend, the school fair will make $120,000.

The school district office uses 70% of this money for maintenance costs and other expenses, leaving 30% for profit.

Therefore, the school district office will make a profit of $36,000 if 1,200 people attend the school fair.

How to calculate the amount

Total money made from the school fair: $120,000

Amount used for maintenance costs and other expenses: 70% * $120,000 = $84,000

Here is the formula for calculating the profit from a school fair:

Profit = Total amount of money made from the fair - Amount used for maintenance costs and other expenses

In this case, the profit is calculated as follows:

Profit = $120,000 - $84,000 = $36,000

Profit: $120,000 - $84,000 = $36,000

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The author of passage 2 characterizes the controversy surrounding civil rights reform as

Answers

The author of Passage 2 characterizes the controversy surrounding civil rights reform as constructive.

so.. the answer is constructive!


hope this helps!!

A vehicle with power steering makes a hissing or whirring sound when the wheel is turned all the way to the stops. Technician A says this is a normal condition. Technician B says a loud squealing noise during sharp turns may be caused by worn ball joints. Who is correct?

Answers

Answer: Technician B

Explanation:

the – or caucus votes determine the allocation of – at the party’s convention. in addition to selecting the party’s nominee, delegates also vote on the – at the convention.

Answers

The missing options about selecting a candidate for the political party are; Primary, Delegates, Party Platform

How to select candidates during elections?

The PRIMARY or caucus votes determine the allocation of Delegates at the party’s convention. in addition to selecting the party’s nominee, delegates also vote on the Party Platform at the convention.

Those underlined words are the correct answers because when carrying out party convetions to determine the candidates, delegates are allocated who also vote on the plaform of the party.

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drag the appropriate items to their respective bins.

Answers

In computer science, bins are data structures used for organizing and storing data in a particular way. They can be used for a variety of purposes, such as memory allocation and sorting algorithms.

Here's a step-by-step explanation:

1. Identify the criteria for the bins: Understand the categories you need to sort the items into. The criteria can be based on different factors such as color, shape, size, purpose, etc.

2. Examine each item: Carefully analyze every item and consider its characteristics that correspond to the criteria established in step 1.

3. Match the characteristics: Determine which bin the item belongs to by matching its characteristics with the established criteria.

4. Drag and drop the item: Once you know the appropriate bin, drag the item and place it into the corresponding bin.

5. Repeat steps 2-4: Continue examining and sorting the remaining items until all items have been placed in their respective bins.

6. Double-check your work: After placing all items in their bins, review your work to ensure that every item is correctly sorted.

Remember that to provide accurate assistance, I would need more information about the specific items and bins in question. If you provide these details, I can better guide you on how to sort the items correctly.

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A nosotros ______ gusta esquiar. the recommended sites for taking a pulse are points located along the ________ arteries. Which of the following includes organisms that can use energy from the sun to make food? How does work affect energy between objects so it can cause a change in the form of energy?O Work transfers energy.O Work changes energy.O Work increases energy.O Work decreases energy. ________ reliability involves dividing a test in half and correlating the items from one half with the items from the other half. Critically evaluate the company's Corporate and BusinessLevel strategies components in response to the challenges of recycling locally and globally. (Include facts and figures to support your opinion). Why does tellez come to tony's father? how can you tell that tony's father is more skeptical than his mother and why does he change his mind? What purpose does the house serve in Passage 3?Passage 3"The Deserted House"by Alfred Lord Tennyson Cast away Imagine you are vacationing on a luxury cruise liner touring the South Pacific. Suddenly, you hear a voice from the ships captain stating that all passengers must prepare for an emergency situation. People everywhere are panicking; several begin inflating the ships life rafts. Out of nowhere a large ocean tsunami capsizes the ship leaving only a few hundred survivors out to sea. The survivors of the ship lay desperately in their life rafts for two days before floating up to a deserted island. Food is scarce, and fresh water is nowhere to be found. ____________________________________________________________________ Questions:1. How are you going to survive until help arrives?2. How will you make decisions affecting the survival of the group? 3. Who will lead and how will they be chosen? 4. How will the daily needs (food, water, shelter) of your fellow castaways be met until help arrives?5. Will there be any rules on the island? If so, what are the penalties for violating those rules? if you divide polynomial f(x) by (x-7) and get a remainder of 5 what is f(7) which text is granger responsible for remembering? answer choices for the above question a. gullivers travels b. platos republic c. the book of ecclesiastes d. to kill a mockingbird What happens to the density of air as altitude decreases find a pair of elements from an array whose sum equals a given number Company P have the following shares issuedOrdinary shares$1,000,000 at 50 cents per sharePreference shares$200,000 at $2 per shareThe directors pay a 10 cent ordinary dividend and a 20 cent preference dividendHow much will this cost the business? You cannot use the == operator to compare the contents of:A) objectsB) stringsC) integersD) Boolean values true or false: the opportunity cost rate to be applied to any investment is the rate of return that could be earned on alternative investments of similar risk. mcdarrel's records $500 of accrued salaries on december 31. three days later, on january 3, total salaries of $4,000 (including the $500 accrued at year end) are paid. demonstrate the required journal entry on january 3 by selecting from the choices below. (check all that apply. a nurse is caring for a 2-year-old with a new diagnosis of strabismus. which intervention should the nurse anticipate? Rationalize the denominator 25/6 If cosh(x) = 41 9 and x > 0, find the values of the other hyperbolic functions at x. sinh(x) = 1600/81 Incorrect: Your answer is incorrect. tanh(x) = coth(x) = sech(x) = csch(x) =