What is the [oh⁻] of a 1. 40 m solution of pyridine (c₅h₅n, kb = 1. 70 × 10⁻⁹)?
Based on the calculations, the pOH of a 1. 40 M solution of pyridine (C₅H₅N) is equal to 4.5.
How to determine the pOH of the buffer solution.First of all, we would write a properly balanced chemical equation for this chemical reaction:
Py(aq) + H2O(l) ⇄ HPy⁺(aq) + OH⁻(aq)
Initial cond. 0.50 0 0
-x x x
At equib. 0.50-x x x
From the ICE table, the Kb for this chemical reaction is given by:
Kb = x²/0.50
1.7 × 10⁻⁹ = x²/0.50
x = [OH⁻] = 2.9 × 10⁻⁵
Now, we can calculate the pOH:
pOH= -log(2.9 × 10⁻⁵)
pOH = 4.5.
For the pH, we have:
pH= 14 - 4.5
pH = 9.5.
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Acetylene, c2h2 c 2 h 2 , can be converted to ethane, c2h6 c 2 h 6 , by a process known as hydrogenation. the reaction is c2h2(g)+2h2(g)⇌c2h6(g) c 2 h 2 ( g ) + 2 h 2 ( g ) ⇌ c 2 h 6 ( g ) given the following data at standard conditions (all pressures equal to 1 atm a t m and the common reference temperature 298 k k ), what is the value of kp k p for this reaction?
The value of the Kp is obtained from Kp = p.C2H6/p.C2H2 * pH2^2 as 1.
What is Kp?The Kp is the equilibrium constant for a gas phase reaction we have to put down the equation for the Kp here as; Kp = p.C2H6/p.C2H2 * pH2^2.
We are told here that all the pressures are equal to 1 atm hence we substitute values; Kp = 1/1 ( (1)^2 =1
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All of the following are functions of packaging except
Entertainment is the option which isn't a function of packaging in this special scenario.
What is Packaging?
This is the science and technology of enclosing a substance for distribution and use by others.
Packaging helps to protect and to promote the brand through the labels and containers used but doesn't offer any form of entertainment which makes it the most appropriate choice.
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Explain the prophecy concerning the righteous "branch," including who prophesied concerning this "branch." use complete sentences.
The prophecy regarding the righteous branch of the Jerusalem and Judah was prophesized by Jeremiah.
What is prophecy?Prophecy is given as the ability for the determination of the prediction for the future. The Jerusalem and the Judah have been considered as the branch of the righteous.
The salvation of the Jerusalem and the Judah was considered to be prophesized by Jeremiah.
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Charles has times when he feels extremely despondent for no apparent reason. During these times, he finds it hard to be productive in his classes or at his job. He will cancel plans with his friends and then sit on his couch, staring off into space, lacking the energy or desire to do anything. Often, it is difficult for him to get out of bed in the morning. Charles’ symptoms are characteristics of:
Disorders are illness that affects the mental state of the person and affects many areas of life. Charles’ symptoms are characteristics of anxiety disorder.
What is anxiety disorder?Anxiety disorder is a mental illness that causes panic and results in health problems. Anxiety causes a person to worry about the events of their routine lives.
It affects the daily tasks and activities of the person and causes a person to be restless or energy-deficient causing them to be less productive.
Therefore, Charles is suffering from an anxiety disorder.
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$1800 at 6.5 for 30 months find the interest earned
Answer:
$8,307.69
Explanation:
You divide 1800 and 6.5 then times 30.
Hope this helps <3
Look for and express regularity in repeated reasoning
Explanation:
They continually evaluate the reasonableness of their intermediate results. Upper elementary students might notice when dividing 25 by 11 that they are repeating the same calculations over and over again, and conclude they have a repeating decimal.
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Although the overall divorce rate has declined in the past two decades, divorce among __________ couples is rising.
Although the overall divorce rate has declined in the past two decades, divorce among middle-aged couples is rising.
What are socio-cultural trends?The term sociocultural trends make reference to cultural tendencies and/or directions in contemporany society according to different periods.
These different trends (socio-cultural trends) can be able to mark a before and an after in society.
In conclusion, although the overall divorce rate has declined in the past two decades, divorce among middle-aged couples is rising.
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What operation will transform the following matrix to row echelon form?
Answer:
A edge 2022
R2+R3->R3
Explanation:
Why did the cia support covert activity to restore the shah to power in iran?
To protect oil interests and prevent the spread of communism to fulfill obligations to the United Nations and support the spread of democracy to encourage democracy and support freedom to prevent the spread of biological weapons.
Explanation:
# Brainliest Bunch
Ready 5 mathematics practice and problem solving answer key
Ben I do want that answer key
Enlarged brain ventricles are presumed to signify __________. a. an excess of dopamine activity b. frontal lobe abnormalities c. development of brain tissue d. a deterioration of brain tissue please select the best answer from the choices provided a b c d
Answer:
development of brain tissue
Explanation:
Edgenuit
Each of the following is part of your innate immune system, except:
Does listening to music while studying hinder students learning
Answer:
“Does Listening to Music While Studying Hinder Your Learning?” This is a question asked by many students, and often it comes up during tests. Studies have found that music can actually help students learn better, but listening to background music can also hinder learning. Knowing the pros and cons of this can help you decide whether background music is a good choice for your study habits.
Explanation:
Charlene has lupus and one of the prescriptions she receives
She had lupus and received Steroids which is classified as a Schedule III drug in medicine.
What is Schedule III drug?These are the drugs which have an accepted medical use, known prescription and a moderate risk of abuse.
Example of such types of drugs is steroids which can be used to treat conditions such as lupus.
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Which question best represents the main idea in woolf analyzes in a room of one's own?
The question which best represents the main idea in Woolf's analysis is: why are women portrayed powerfully in literature but ignored in history?
What is a main point?A main point is also referred to as central idea and it can be defined as the most important part or theme of a literary work, which is used by a writer to tie all of the other elements of fiction together when writing a true story.
Based on the excerpt from "In a room of one's own" by Woolf, we can deduce that the question which best represents the main idea in Woolf's analysis is asking, why women are portrayed powerfully in literature but ignored in history?
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Answer:
Why are women important characters in literature but unimportant in history?
Select the correct answer. which phrase best completes this sentence? al facturar las maletas recibimos ____________ para subir al avión. a. las llaves del auto b. pasaje del avion c. tarjeta de embarque d. pasaje electonico
Answer:
c. tarjeta de embarque
Explanation:
Did the test on Edmentum (Plato) Spanish I B and got it right!
Hope this helps!
Have a great day!
Also, thank you to the other person that explained this!
Complete these structures by adding electrons, in the form of dots, as needed.
The Complete structures that has been done by adding electrons, in the form of dots is given in the image attached.
What is the Lewis Dot Structure?This is known to be the way that Scientist uses in showing chemical structures to stand for some key characteristics of the molecules.
Note that Lewis dot structures compose of a pair of electrons that is said to be shared by two atoms which is depicted by a line called a bond.
Conclusively, Unpaired valence electrons in this structure are shown by dots found externally on the atom known as lone pairs.
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Liberalism could best be described as a political ideology that assumes government exists in order to improve society. is the extreme right wing. prefers to limit government. values individual freedom over government involvement.
Liberalism could best be described as a political ideology that prefers to limit government. Check more about Liberalism below.
What is liberalism in political ideology?Liberalism is known to be a type of political and moral philosophy that is said to be centered on the human rights, liberty, etc.,
Note that Liberalism could best be described as a political ideology that prefers to lower the power of the government and give people more rights.
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Answer:
A
Explanation:
Edge 2023
Who led the communist superpower when the soviets invaded czechoslovakia during the prague spring
Answer:
The doctrine was largely a response to the Prague Spring, a period of liberalization instituted in the Soviet-bloc country Czechoslovakia by newly installed leader Alexander Dubček in 1968.
A global network of interconnected networks is known as
A global network of interconnected networks is known as Internet
What is an Internet?An internet is known as a wide global network that consists of many smaller interconnected networks. This makes it possible that different millions of computer units world wide can connect and communicate with each other as long as they are connected to the Internet using the standard Internet protocol suite (TCP/IP).
With the Internet, we are able access to information and communicate easier.
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Why is a linear function not the best model for the data? for evenly spaced x-values, the of consecutive y-values is not constant.
Answer:
B. Difference
Explanation:
on edge
Answer: difference
Explanation: edg
What is the first step one should take to become more cooperative in your conflict management ?
The first step one should take to become more cooperative in conflict management manage your emotions. The correct option is d.
What is conflict management?The practice of resolving conflicts or disagreements between people or groups is referred to as conflict management.
Identification of the dispute's root causes, open and honest communication, and cooperative problem-solving are all essential components of effective conflict management.
Emotions can frequently get in the way of clear communication and problem-solving when we are in disagreement.
We could feel defensive, irate, or agitated, which could result in miscommunication and a breakdown in teamwork.
Learning to control your emotions can allow you to develop better relationships and outcomes by promoting a more cooperative and productive environment for dispute resolution.
Thus, the correct option is d.
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Your question seems incomplete, the probable compete question is:
What is the first step one should take to become more cooperative in your conflict manag
a. manage information
b. manage both problems and solutions
c. manage your expectations
d. manage your emotions
Which of these is a disadvantage of hydrogen fuel cells
A major source of sodium metal is the electrolysis of molten sodium chloride. what magnitude of current (in amps) can produce 640.0 g of na(s) in 2.50 hours?
Answer:
I = 2330.9 A
Explanation:
The magnitude of the current produced by the metal of 1 kg has been 2330.9 A.
In electrophoresis, the transfer of 2 moles of electrons takes place per mole of Na.
The moles of sodium has been:
Moles =
Moles of Na = mol
Moles of Na = 43.47 mol
1 mole Na have = 2 moles electrons transfer
The total charge transfer in 1000 grams Na can be given by:
q = moles of Na moles of electrons transfer Faraday constant
q = 43.47 2 96500
q = 8.391 C
The current can be given by:
I =
I =
I = 2330.9 A
The magnitude of the current produced by the metal of 1 kg has been 2330.9 A.
What is the volume of the pyramid, to the nearest cubic foot? 5 ft3 9 ft3 14 ft3 19 ft3
The volume of the pyramid, to the nearest cubic foot is 19 ft3
What is a pyramid?This is known to be a shape that has outer surfaces which is said to be triangular and come together to a single point at its top.
The Volume of the pyramid is known as = 1/3 x b x h
Note that
length = 2.16ft
Area = 8ft/2
angle ACB = 30 degrees
Therefore, when you solve inputting
tan 30= perpendicular/ base
Where AB= 7.03
The volume of the pyramid will give us 19 ft3
Therefore option with 19 ft3 is correct.
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Answer: 19ft3
Explanation:
edge
Based on your prompt, what is the best title for your presentation? presenting on a topic immigrating to america ellis island today changes in immigration
Answer:
B
Explanation:
Answer:
B - Immigrating to America
Explanation:
Which reasons support this claim? choose three answers. youth lacrosse consists of four ten-minute quarters. the school lacrosse club has thirty-five regular attendees. funding is available for one sport to be added. sporting goods stores often sell lacrosse sticks. other high school lacrosse teams are seeking opponents.
The statement which supports the claims from the provided options are similar to the option shown in 2,3 and 5.
The school lacrosse club has thirty-five regular attendees. Funding is available for one sport to be added. Other high school lacrosse teams are seeking opponents.Which reasons support this claim?In the problem of reasons and claim, the appropriate reasons have to be found out for the provided claim.
Let's check all the options to find the reasons which support this claim,
Youth lacrosse consists of four ten-minute quarters-No, this game take 32 minutes, with four eight-minute quarter.The school lacrosse club has thirty-five regular attendees-Yes, this reason is correct.Funding is available for one sport to be added- This claim is also correct as funding is available for one sport to be added.Sporting goods stores often sell lacrosse sticks- No they do not often sell lacrosse sticks.Other high school lacrosse teams are seeking opponents-this statement is also correct as per the claim.Thus, the statement which supports the claims from the provided options are similar to the option shown in 2,3 and 5.
The school lacrosse club has thirty-five regular attendees. Funding is available for one sport to be added. Other high school lacrosse teams are seeking opponents.Learn more about the reasons and claim here;
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Answer:
2,3,5
Explanation:
I took the quiz and these are right. :)
If the pattern continues, what will ms. franklin’s salary be in year 10?
Answer:
35,200
Explanation:
EDGE 2020
In 2015 attackers targeted six locations throughout paris
These attackers sought to create political pressure within France to suspend airstrikes against ISIS targets within Syria.
What is terrorism?Terrorism can be defined as an unlawful use of both force and violence against the people living in a geographical location, so as to intimidate or coerce them and their government in furtherance of political, cultural or social objectives and interests.
In 2015, ISIS attackers targeted six (6) different locations throughout Paris, so as to create political pressure within France for the suspension of airstrikes against Islamic State of Iraq (ISIS) targets within Syria.
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