The vapour pressure of pure benzene at a certain temperature is 0.850 bar. A non volatile, non electrolyte solid weighing 0.5 g is added to 39.0g of benzene. The vapour pressure of the solution then is 0.845 bar. What is the molecular mass of the solid substance​

Answers

Answer 1

Answer:

The molar mass is 169g / mol.

Explanation:

To achieve this result you must consider the formula:

[(pº-p) / pº] = [na / (na + nb)]

This formula should be replaced by the values shown in the question as follows:

pº = 0.850 bar

p = 0.845 bar

To find the values of "na" and "nb", we will consider that the letter "m" represents the molecular mass of benzene that is equal to 78, so we have:

na = 0.5 / m; nb = 39/78 = 0.5

Now we can replace all values in the formula:

0.850-0.845 / 0.850 = (0.5 / m) / (0.5 / m) +0.5 =

0.5 / (0.5 = 0.5m) =

1/1 + m =

m = 0.850 / 0.005 - 1 = 169g / mol


Related Questions

The paragraph contains several sentence fragments. Decide if the selection in bold needs to be revised or if it is correct as is.
Near the Normandy coast of northern France, the village of Bayeux houses a remarkable treasure. The Bayeux Tapestry may be found in its
own museum in the former Great Seminary of Bayeux. Also known as the Tapestry of Queen Matilda or the Cloth of the Conquest. This tapestry
is unusual. Because it is a very long, narrow strip of linen measuring 70 meters by 50 centimeters. The tapestry is actually an embroidery of
William the Conqueror's invasion and conquest of England in 1066. It consists of fifty-one scenes and depicts more than 1,500 figures.
Including warriors, horses, other animals, ships, castles, weapons, and other objects. Latin words are embroidered on the scenes. To explain
what is taking place at each stage of the invasion and battle.
Which option below would be an acceptable revision of the selection in bold?
a. No revision is necessary.
b. It consisted of fifty-one scenes and depicting more than 1,500 figures.
Oc Consisting of fifty-one scenes and depicting more than 1,500 figures.
d. Therefore, it consists of fifty-one scenes and depicting more than 1,500 figures.

Answers

Answer:

I think, and from my point of view D is acceptable

Among all the given options, the one which is an acceptable revision of the selection in bold is “Therefore, it consists of fifty-one scenes depicting more than 1,500 figures.” Hence, Option D is correct.

What is revision?

Revision is a process that can be done in written as well as verbal form. When a revision is done in writing, in this form basically paragraphs, sentences, or words are rearranged, added, or removed.

While doing the revision, writers do work on the write-ups after the work of drafting is completed. All the thing that is done by them adding or rearrangement of paragraphs, sentences, or words is done.

Some of the illustrations of revision are a book editor removing unnecessary content from a book, an editor has removed content from the article, and many more.

Thus, Option D is correct.

Learn more about revision from here:

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Read "The Second Coming" and answer the question. The Second Coming by W. B. Yeats Turning and turning in the widening gyre The falcon cannot hear the falconer; Things fall apart; the centre cannot hold; Mere anarchy is loosed upon the world, 5 The blood-dimmed tide is loosed, and everywhere The ceremony of innocence is drowned; The best lack all conviction, while the worst Are full of passionate intensity. Surely some revelation is at hand; 10 Surely the Second Coming is at hand. The Second Coming! Hardly are those words out When a vast image out of Spiritus Mundi Troubles my sight: somewhere in sands of the desert A shape with lion body and the head of a man, 15 A gaze blank and pitiless as the sun, Is moving its slow thighs, while all about it Reel shadows of the indignant desert birds. The darkness drops again, but now I know That twenty centuries of stony sleep 20 Were vexed to nightmare by a rocking cradle, And what rough beast, its hour come round at last, Slouches towards Bethlehem to be born? What is the central theme of the second stanza? A) People fear what they do not understand. B) Society has created many of its own problems. C) The approaching beast is an all-powerful entity. D) Looming disasters are seldom preventable.

Answers

Answer:

D) Looming disasters are seldom preventab

Explanation:

The central theme of the second stanza in "The Second Coming" by W.B. Yeats is society has created many of its own problems. Therefore, the correct option is B.

Chaos is being spread on the earth and things are falling apart in the artwork which indicates chaos and disorder. The proverb "The best lack conviction, while the worst are full of passionate intensity" emphasizes the difference between the indifference of those who should be in leadership positions and the enthusiasm of those who seek to cause harm. It argues that complacency and unbridled passions of misguided people combine to create social issues.

Therefore, the correct option is B.

Learn more about Central theme, here:

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Barry gets hurt at work and must go on disabililty for 4 months. On disability, the pay that Barry receives is 60% of his normal net pay. Barry should be fine if he has a plan for _____. a. financing b. managing his investments c. managing his liquidity d. protecting his assets

Answers

Answer: c. Managing his liquidity

Explanation:

Barry will be getting less money than he is used to and so will need to manage his lifestyle in a way that he can maintain himself with this reduced cashflow.

The way to do this is to manage his liquidity. Liquidity refers to the flow of cash and so managing it refers to adopting strategies and methods that will enable a person use the money they have in such a way that it meets their obligations with the amount that they have.

If Barry has such strategies and methods he can survive the reduction in his income till he is back off disability.

Answer:

c

Explanation:

Throughout the novel, there are references to light and darkness, which take on different meanings if they are understood either literally or figuratively. What does the light figuratively symbolize? What does the darkness figuratively symbolize? (Hint: think back to Plato's "The Allegory of the Cave.")

Answers

Answer:

The darkness figuratively symbolizes ignorance

Explanation:

From the book, The Allegory of the Cave, the author used certain allegories to show the meaning of certain things.

Plato wrote The Allegory of the Cave to describe certain people who have lived their lives chained to a wall of a cave while staring at a blank wall.

It is described that it was likened to a philosopher who was freed from a cave and finds out that the shadows on the wall are imaginary.

Darkness from the book signifies ignorance.

Personnel not facilities in the bane of quality public primary education

Answers

Answer:

The Ghanaian example has shown that the issue of "personnel not facilities being the bane of quality public primary education" is very much debatable.  Ab initio, the two contributors are important in the delivery of quality public primary education.  Therefore, I will allocate the importance and the bane of quality education 50/50 to each of these aspects of education delivery.

Educational success cannot be achieved without the personnel being themselves of the highest quality, not only in terms of learning, but also in moral and ethical character formation and standing.  This is important because education cannot be received without someone imparting it, and even some other persons helping the teachers to impart the desired knowledge and learning.  A teacher or support staff who is morally depraved cannot impart quality education, especially at the primary level with pupils in their formative and tender years.

In the same light, nobody can expect the personnel to deliver quality education in a vacuum.  The infrastructure or facilities are key in the delivery of quality education by quality personnel.  These facilities are all-embracing and include many of the teaching aids required for successful education delivery, including the remuneration of the personnel.  This makes this subject intricately intertwined.  One cannot discuss an aspect without touching the other.  The two must be effectively balanced in order to produce good results.

Explanation:

Pupils at the primary education level need teachers who will bear witness to what they teach and not just talkers.  Good example teaches better than words.  In the same way, good learning and teaching facilities aid in learning.  That is why they are called learning aids.  Education should not only be informative but should equally be "performative."

verb of complain in english​

Answers

Answer:

to say that something is wrong or not satisfactory:

* Lots of people have complained about the noise.

* You're always complaining!

* He complained that his boss was useless and he always gives too much work.  

present tense  

he/she/it                 complains

present participle   complaining

past tense                 complained

past participle         complained

  Hope this helped :)


I bought a beautiful dress at the mall. *

نقطة واحدة

preposition

adjective

noun

What did she ask you to do? *

نقطة واحدة

conjunction

preposition

pronoun

I left my shoes under the kitchen table. *

نقطة واحدة

adjective

preposition

pronoun

If we finish our work quickly we can go to the movies. *

نقطة واحدة

adverb

conjunction

verb

On Saturdays I work from nine to five. *

نقطة واحدة

verb

preposition

adverb

I want to go to a university in the United States. *

نقطة واحدة

adjective

preposition

noun

In the fall, the valleys tend to be ___________ than the hilltops *

نقطة واحدة

foggy

more foggier

foggier

the correct synonym for (For a short time) *

نقطة واحدة

briefest

briefer

briefly

the correct synonym for (A criminal who deliberately starts fires) *

نقطة واحدة

firefly

firebug

fireman

the correct synonym for (Exactly the same) *

Answers

Answer:

ans. no 1 adjective

ans.no 2 pronoun

ans. no 3 preposition

ans. no 4 adverb

ans. no 5 verb

ans. no 6 noun

ans. no 7 foggier

ans.no 8 briefly

ans. no9 fireman

ans.no 10 twins

hope this are correct :)

hoped I helped you( ╹▽╹ )

What community do you live in?
Name two places in your community?
What is your favorite place to visit in your community and why?


Answers

Answer:

I live in an urban community

Hausa Market, saleh'a shop.

The round about basketball and sport arena.

Explanation:

It is my favorite because i meet a lot of people whenever i go for morning exercise

What were the colonists' attitudes toward the New World environment?

Answers

Answer:

The answer is

Explanation:

There goals were to create a theocracy and avoid starving to death. This motivated colonists so stay alive.

Hope this helps....

Have a nice day!!!!

Select the correct text in the passage.
Which of these excerpts from "Once in a lifetime" by Jhumpa Lahiri most clearly exemplifies diversity within socioeconomic status?

Answers

The correct answer is 2. "First class!" my mother exclaimed, with an intake of breath. "How did you end up there?" ...

Explanation:

In excerpt two, there is a clear contrast between the mother of Hemma (female main character and narrator) who belongs to a middle or low socioeconomic status and the parents of the male character Kaushik. This is shown by the reaction of the mother of Hemma who is shocked by the extravagance of flying in first class. This is shown in "First class!... How did you end up there?" that shows the surprise of the mother and the answer of the father in "It could become a terrible habit" that shows how proud he is of this event. Thus, this excerpt shows the diversity within socioeconomic status by explaining the shock and surprise of Hemma mother to the fact another family flew in first class.

Which line from the text best supports this theme

Answers

Explanation:

It doesn't show the theme or at least you don't tell the theme so I cannot help.

SOMEONE PLEASE HELP ME I REALLY NEED THIS!!!Read this excerpt from a passage.
As the World Wildlife Foundation reports on its website, "Pirate fishing accounts for an estimated 20%
of the world's catch and as much as 50% in some fisheries. The costs of illegal fishing are significant,
with the value of pirate fish products estimated at between $10-$23.5 billion annually."
How do you know this excerpt contains objective language?
It stresses the author's point of view.
O The information is from a website.
O It provides factual information that can be verified.
O The author's opinion is convincing.

Answers

The correct answer is C. It provides factual information that can be verified.

Explanation:

Objective information focuses on facts and reality, rather than on personal views. Due to this, all objective information can be verified as this information derives from phenomena that can be observed, studied, and measured. Moreover, objective language avoids including the author's point of view or opinion and focuses on providing neutral information.

This occurs in the excerpt presented because all information regarding pirate fishing such as "Pirate fishing accounts for an estimated 20%" or "the value of pirate fish products estimated at between $10-$23.5 billion annually" is neutral and can be proven. Indeed, it is possible to read other sources to know if the statistics given are true or to study the phenomenon as the rate of pirate fishing and the cost of its products does not depend on personal perspectives but it is a reality.

Which of these phrases matches the style of Bradford’s writing a Meal of brown bread and boiled cabbage a Cacaphony jarring jangling discordance as bright as a glittering multifaceted jewel in a golden crown running like cheetahs

Answers

Answer:

A). A Meal of brown bread and boiled cabbage.

Explanation:

William Bradford's writing style is characterized by simplicity, clarity, and straightforwardness so that the intended meaning or message is conveniently understood by the readers without any strings or complications. In his 'Plymouth Plantation', he has employed a very plain, clear imagery, and straightforward writing style to display the aesthetic virtues associated with a simplistic writing style. Thus, the phrase that reflects Bradford's writing style would be 'a meal of brown bread and boiled cabbage' as it states the idea in a plain, clear, and straightforward manner. Hence, it justifies the above claim and therefore, option A is the correct answer.

which of the following nouns is neuter gender? a. nurse. b. doctor. c. lab assistant. d. syringe​

Answers

Answer:

syringe

Explanation:

'Nurse' and 'lab assistant' suggest  a female person, and 'doctor' suggests  a male person. A 'syringe' is clearly an inanimate object, and as such, has zero gender association.

Answer: syringe

Explanation:

syringe is a thing so it doesnt have a gender

Correctly label the below as simple, complex, compound, compound-complex, or sentence fragment.
1.Vampires Dairies is my favorite television show, but I also love True Blood.
2.Juan, Sam and Marie went to a movie, ate popcorn, and walked around the mall.
3.After the officer pulled Tim over, Tim began to cry, and the officer took pity on him.
4.Running after the car, the dog barked until the car was out of sight.
5.I love skiing, my brother loves snowboarding, and my sister likes snow tubing.
6.We ordered pork tenderloin for our entrée and scalloped potatoes for our side dish.
7.Although he hasn’t read the book, he has decided to write a book report on it.
8.I saved my money so that I could buy an iPad.
9.I love eating turkey at Thanksgiving, but my friend’s family eats lasagna because his cousin is allergic to poultry.
10.Because you don’t understand me.

Answers

Answer:

1.   compound

2.  simple

3.  compound-complex

4.  fragment

5.  compound

6.  simple

7.  complex

8.  simple

9. compound-complex

10.  fragment

What is collaboration? (1 point)
O working together with others on a shared idea
O a venue for asking questions
a process of working independently
o communicating without working as a group​

Answers

Answer:

I believe it's the first answer

Explanation:

Collaboration is usually identified as working with another person or group in order to achieve or do something.

Answer:

A

Explanation:

Working together on a shared idea

When Georges is picked to be captain of the blue team, why does Dallas call it the “blue tongue team”?

Book: Liar & Spy

Answers

Answer:

Dallas called it the "blue tongue team" from the science class experimentation where Georges had volunteered to help Mr. Landau, the science teacher, explain about the taste buds.

Explanation:

Rebecca Stead's "Liar and Spy" is a children's story about a young boy named Georges and his family's move into a new apartment, his new environment at school and his new friendship with his neighborhood children. The story also delves into his interest in the "spying" world of Safer, his neighbor.

When Ms. Warner selected Georges to be the captain of the blue team, Dallas, the school bully called out "blue tongue team". This is from the incident in Mr. Landau's class where he had volunteered to be tasted for how many taste buds a person has. Mr. Landau had put a "white paper reinforcement . . . [then] dips a Q-tip into some blue water" after which he used his "digital camera, takes a close-up, and projects the picture onto the whiteboard". This is a way to explain to the class about the taste buds through the practical presentation of the "blue tongue-flesh protruding through the hole in the reinforcement that is still in my mouth, magnified ten thousand times." And from this point forward, Dallas started the "blue tongue team" title.

The last lines of 'I'm Explaining a Few Things" are very famous.

Come and see the blood in the streets.

Come and see

The blood in the streets.

Come and see the blood

In the streets!

Pablo Neruda wrote in Spanish. Here are the untranslated lines.

Venid a ver la sangre por las calles,

venid a ver

la sangre por las calles,

venid a ver la sangre

por las calles!

Are the original lines more effective? Explain your answer and defend it with support from the text, including explaining the purpose of the lines. Discuss the structure, repetition, and sound of the language in your answer.

Answers

Answer:

The Spanish version is more effective.

Explanation:

Even though both versions are beautiful, in the translated one some figures of speech are lost, for example, in "venid a ver" there is an ALLITERATION that has a sound effect (the repetition of letter v) in the original language that is not shown in the English version.  

Besides, "venid a ver" would be more effective if translated as  'come to see' (literal translation) instead of 'come and see'.

Why hasn’t the woman see a doctor

Answers

Answer:

Because the current situation makes impossible to do that :v

Explanation:

Answer:

maybe she feels she can handle it without a doctor's help, or she has no way to reach a doctor, or, anything like that...

Hope this helps!!

What is the best definition of an argument text?

Answers

Answer:

An argument text is a text written about a subject, where the writer is either 'for' or 'against' the subject.

Explanation:

Answer:

An argument text is a text written about a subject, where the writer is either 'for' or 'against' the subject. Common argument texts written in primary school highlight the pros and cons of subjects such as zoos, school uniform or the use of computer tablets in education.

Explanation:

Paul insists that a conclusion would reinforce the thesis statement Pat says that the conclusion should follow logically from the introduction which one is right

Answers

Answer:

Your Conclusion should always reinforce your thesis statement  in a from of a thesis essay.

Explanation:

What is your favorite place to visit in your community and why?

Answers

The park or beach because you can relax and enjoy the view you and in the park you can walk and enjoy the nature and kick the stress you out of your mind and focas on relaxing.

I like to go to the park,where I hang out with my friend and my dog and just have fun.For when we are still young we have to make the most of it.At the park there is a lot of things to do.

what is photography ?​

Answers

Answer:

The art or practice of taking and processing photographs.

the art or practice of taking and processing photographs.

3) A translator has several important tasks to perform. He or she must understand what one person is saying in one language, must know how to tell it in another, and ____________

Answers

Answer: A translator has several important tasks to perform. He or she must understand what one person is saying in one language, must know how to tell it in another, and ____________

Explanation:

Answer:B

Explanation:

usa test prep

What is the purpose of the roman numerals I. and II. in
this passage?
7
of
пе
O to emphasize the importance of the rules
O to show the sequence of sections
O to present facts about the company
O to focus readers' attention on personal website use
he

Answers

Answer:

To show the sequence of sections

Explanation:

What are Hamlet's contemplations a foretelling of

Answers

Answer:

the Hamlet's contemplations a foretelling of was

his madness..

Answer:

i took the test its his madness

Explanation:

Which of the following means "having to do with," "belonging to," or
"following"?
O A. Fy
O B. Ent
O co-or
D. -lan

Answers

Answer:

I think its B

Explanation:

I think its Ent because I have a feeling that's what means "having to do with," "belonging to," or "following."

PLZ HELP What kind of graphic would best help compare test results from different research projects? map graph table diagram

Answers

A graph would do you well in this situation.

Read the excerpt and answer the question
My father goes fishing the only sing that seems to keep him calm. The mountains are sleeping waves. My father catches very small fish. My mother eats them. My friends laugh at me, when I tell them that once upon a time, my father caught a carp weighing 20 pounds.
What does the carp represent?
A:ambition of man
B:loss of innocence
C:Denise of mankind
D: promise of a new start

Answers

Answer:

i believe it's c

Explanation:

i also believe it is c

Select the correct pronoun in the box. Give the letters to Jean and ___. A. I B. me

Answers

Answer:

Explanation:

Give the letters to Jean and me.

Solution is B

Sentence given with a blank :

Give the letters to Jean and ___.

Options :

IMe

What to do?

▶Insert a correct pronoun:

Answer:

→me

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A student finds the slope of the line between (8,17,) and (1,4) she writes 17-4/1-8 What mistake did she make? Solve the equation 14=7(2x-4) using two different methods. Show your work. Which method do you prefer? Explain. need help thanks If you are using your high beams at night, you should remember to dowhat?A. Flicker them constantlyB. Tailgate carsC. Switch to low beams for oncoming trafficD. Also turn on the fog lights Compare the architectural complexes of Teotihuacan and Chaco Canyon. Find the value of f (x)=x-4 and g(x)=3x+2 Find the value of f (-1)g(-1) How should the sentence below be changed to include a verb phrase using the indicated verb? Janet ______________ a successful singer. (be) Question 4 options: a) Janet could be a successful singer. b) Janet is a successful singer. c) Janet wants to be a successful singer. d) None of the above need help right now please A___has a regular polygon base and a vertex over the center of the base.A. Regular pyramidB. PrismC. PyramidD. Right Prism The owners of a local deli routinely try to develop new menu items and seek better ways of helping their customers; this is an example of Multiple Choice the production objective. innovation. MBO. efficiency. synergy. PLEASE HELP I PUT THE PROBLEM AS A PICTURE PLEASE ANSWER WILL GIVE 30 POINTS SHOW WORK X-6 greater then equal to 15 + 8x Which of the following does his cave painting show Consider the following case and determine whether there is sufficient information to solve the triangle using the low of sines. Two angles and the side included between them are known. A. There is insufficient information because to use the law of sines, one side and the angle opposite it must be known. B. There is sufficient information because if two angles and a side included between them are known, the third angle and the remaining two sides can be determined using the law of sines. C. There is insufficient information because to use the law of sines, two angles and a side opposite one of them must be known. D. There is sufficient information because if two angles and a side included between them are known, the third angle can be determined using the angle sum formula and the remaining two sides can be determined using the law of sines. I am on a farm with pigs and horses. The ratio of pigs to horses is 4:1. The ratio of adult pigs to piglets is 1:5. The ratio of adult horse to foal is 3:1. What fraction of the farm are babies (foals and piglets)? where do the cattle graze and why don't they raise their heads written in march poem What is 5 over 30= 3 over c b) How does electron gain enthalpy change along a period and in a group? On a distant planet, a ball is thrown upwards from ground level, reaching a maximum height of 12m and hitting the ground again in eight seconds. Determine a quadratic equation in the form ax^2 + bx^2+c = 0 that could be used to calculate when the ball is at a height of 3m. Do not solve the equation. solve the equation: csc(4x)-2=0 MATHEMATICSAlgebraSimultaneous Equations1. 5u + 2v=7 2u - 2v=72. 3x - 4y=19 4x - 5y=23