Chemistry: Raoult's Law

63,077 results

Chemistry

how do i find which substances are most likely to obey raoult's law?

chem

How would i found out the freezing point of a solution which has 0.05mol of acetic acid dissolved into 125g of benzene? Benzene melts at 5.5C and has a constant of 5.1C/m. The acid forms a dimer (what is this and how does it affect the calculations?) A dimer is a molecule from...

chem

The concentration unit used in Raoult's Law calculations is???

Chemistry

Can someone please check my answer...thank you! According to Raoult's law, as the mole fraction of dissolved nonvolatile solute in a given amount of solvent increases, the solution vapor pressure: VARIES AT RANDOM?

Chemical Engineering: Raoult's Law

A binary mixture of benzene and styrene is kept in a closed vessel at equilibrium such that both liquid and vapor phases co-exist. The total amount of moles in the vessel is 100. The total moles of benzene that is distributed in the liquid and vapor phases is 35. The ...

Chemistry

Raoult's Law and Ionic or Organic Solutions At 55.0 C, what is the vapor pressure of a solution prepared by dissolving 62.8 g of LiF in 247 g of water? The vapor pressure of water at 55.0 C is 118 mmHg. Assume complete dissociation of the solute.

science

The concentration unit used in Raoult's Law calculations is: a. mole fraction b. percent by weight c. molarity d. molality e. none of these I think the answer is A... is is corrent ?

science

The concentration unit used in Raoult's Law calculations is: a. mole fraction b. percent by weight c. molarity d. molality e. none of these I think the answer is A... is is corrent ?

Chemistry

The vapour pressure of pure water at 110 c is 1070 torr.A soln of ethyleneglycol in water has vapour pressure of 1 atm. Assuming that raoult's law is obeyed, what is the mole fraction of ethylene glycol in water?

chemistry

which pair of substances are most likely to obey Raoult's Law? C5H12 and C6H14 H3PO4 and H20 C4H9COOH and C5H12 C5H12 and H20 C4H9COOH and H20 How do I go about figuring this out? What should I be comparing, differences in molar masses, polarity, etc...?

Chemistry

How does dissolving a solute affect the boiling point or freezing point of the solution? What about the solution's vapor pressure? Read about Raoult's Law, freezing point depression and boiling point elevation.

chemistry

the vapor pressure of carbon sulfide is 355.6 torr at 25 degrees Celsius. what is the vapor pressure of a solution prepared by dissolving 12.52 g naphthalene (C10H8, 128.2 g/mol) in 125.0 mL CS2 liquid (76.14 g/mol, 1.261 g/mL)? Assume the solution obeys Raoult's law, and ...

chemistry

What is the total vapor pressure4 at 20° C of a liquid solution containing 0.30 mole fraction benzene, C6H6, and 0.70 mole fraction toluene, C6H5CH3? Assume that Raoult’s law holds for each component of the solution. The vapor pressure of pure benzene at 20° C is 75 mmHg; ...

Chemistry Ap

At 20◦C the vapor pressure of pure methanol (CH3OH) is 89.0 torr and of pure water (H2O) is 17.5 torr. A solution of methanol and water has a total vapor pressure of 35.5 torr at 20◦C. Calculate the mole fraction of methanol in this solution. Assume the solution ...

college chemistry

.361 g of a non-volatile solute is dissolved in 160.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 90 oC the vapour pressure of the solution is 5.1701×102 torr. (The ...

Science-Chemistry

1. What is Charles’s law? • State the definition of the law in words. • What are the assumptions of Charles’s law? • Write mathematical equations that represent the law. • What can you do with Charles’s law? • Using a gas-filled balloon as an example, describe ...

chemistry

A mixture of 0.2 moles of alcohol A and 0.5 moles of alcohol B has a total vapour pressure of 40 mmHg at 297 K. If the mixture obeys Raoult's law, find the vapour pressure of pure B at 297 K given that the pressure of a pure A is 20 mmHg at 297 K.

Chemistry AP

At 20◦C the vapor pressure of pure methanol (CH3OH) is 89.0 torr and of pure water (H2O) is 17.5 torr. A solution of methanol and water has a total vapor pressure of 35.5 torr at 20◦C. Calculate the mole fraction of methanol in this solution. Assume the solution ...

chem

Determine the mass(w/w%) percent of CaCl2 given the following information. The vapor pressure of a CaCl2 solution is 81.6 mmHg at 50degrees C. The vapor pressure of pure water at this temp is 92.6mmHg. Assume that you have 1.00mol of water.[Raoult's Law: P(solution)=X(solvent)...

Chemistry

1. If an aqueous solution that is 0.15 M in HF has an osmotic pressure of 3.9 atm at 25oC, what is the percent ionization of HF at this concentration? 2. A mixture of 2 volatile liquids is said to be ideal if each component obeys Raoult’s Law: Pi=XiPio Two volatile liquids A...

chemistry

According to Raoult's law, which statement is false? a. The vapor pressure of a solvent over a solution decreases as its mole fraction increases. b. The solubility of a gas increases as the temperature decreases. c. The vapor pressure of a solvent over a solution is less than ...

chemistry

1. what gas law does the nitric oxide relate to and why? (**charles law, boyles law, combined gas or gay-lusaacs law) 2. What gas law does nitrogen monoxide relate to? (**charles law, boyles law, combined gas or gay-lusaacs law)

government

Which branch of the law regulates wrongful acts involving injury to one’s person, property, or reputation in a situation not covered by the terms of a contract? A. common law B. tort law C. civil law D. contract law

government

Which branch of the law regulates wrongful acts involving injury to one's person, property, or reputation in a situation not covered by the term of a contract? A. common law B. tort law C. civil law D. contract law

bus law

What is the chronological order of the major legislation that makes up the history of employment law in this country? For each law, state the social problem the law was designed to address, and discuss how employment law has affected the workplace in the last two decades.

science

1)effects of impurities on the boiling point of an organic compound. 2) purposes why melting points are determined. 3)suppose i am taking a melting point and the compound disappears, what must i do? Have you put any thought into these or do you expect us to do your homework? ...

Government Law question

What kind of law is it when judges make the law by their decisions on the bench? ___ Law

Law

Research and identify a labor law that is specific to your state. Share a brief summary of the law with us and discuss why you believe this law is or is not important to the employer-employee relationship.

Chemistry

What data led to the development of the Law of Multiple Proportions? Give an example and explain why this law is important in chemistry. Would this be a good answer: John Dalton used the same observations he used for his law of definite proportions to help develop the law of ...

Chemistry: Raoult's Law

If 0.380 mol of a nonvolatile nonelectrolyte are dissolved in 3.00 mol of water, what is the vapor pressure P(H2O) of the resulting solution? The vapor pressure of pure water is 23.8 torr at 25 C. I got this answer correct: 21.1 torr A solution is composed of 1.50mol ...

CHEMISTRY

Show how Boyle's law can be derived from the ideal gas law.

legal and ethical issues

select a current or proposed law that impacts the delivery of human services what reliable resources are availiable to learn about the implications of this law? What is the purpose or rationale of the law? How will the law effect da-t-day operations within human service ...

chemistry

Explain how the use of masses, while not a component of Boyle's law, is related to the law.

science

An atom that has the same amount of atoms of each element on both sides of the reaction obeys what law? law of conservation of energy law of conservation of mass law of conservation of temperature law of conservation of atoms I know the Answer law of conservation of mass I ...

CHEMISTRY

STATE gay-lussac's law And Avogadro's law.

Civics

In the case The Senate Of Tennessee V. John Thomas Scopes, high school biology teacher John Scopes was accused of teaching content that violated a Tennessee law that stopped public school teachers from teaching evolution. Scopes voted this law , but felt his right to free ...

Government

i think it is answer ( b ), can someone make sure What is the difference between criminal and civil law? a) There is no difference. b) The standard of guilt is higher in criminal law than it is in civil law c) The government is always involved in civil law but never in ...

Chemistry - Rate Law

The following example is given in my textbook: If a chemical equation is: NO2 (g) + CO (g) -> NO (g) + CO2 (g) The rate law is: Rate = k[NO2]^2 Usually you put in the reactants in their own sets of brackets, so why isn't the reactant CO involved in the rate law? I get it ...

Chemistry

An example of a solution that exhibits a positive deviation from Raoult’s Law (total pressure is greater than expected) is a solution of acetone (CH3COCH3) and carbon disulfide (CS2). a) Draw Lewis structures for these molecules. Explain the deviation from ideal behavior in ...

Chemisrty

Determine which law is appropriate for solving the following problem. What volume will 1.56 liters of a gas at 27°C and 745 mmHg of pressure occupy at 100°C and 700 mmHg of pressure? Law used: Boyle's Law Charles' Law Combined Gas Law

bioethics

what is law natural law eternal law human positive law what is conscience different kinds of conscience pls need an answer thanks

Law

Hi there! I have totally got to find out how the Aussie Law is similar to the US law. Anyway I DO like know that like Oz follows England law mainly but that isn't what I need. Bushells of Thanks Minnie

business

what is the chronological order of the major legislation that makes up the history of employment law in this country? for each law, state the social problem the law was designed to address and whether the law has solved the problem.

Chemistry (henry's law and IGL)

Can Henry's Law be used for gases that obey the Ideal Gas Law? What about gases that do not obey the ideal gas law? when can you use/Not use henry's law?

government

The colonists built their governments based on customs and ideas borrowed from England and early civilizations, including unwritten, judge-made law developed over centuries. This type of law is known as a. constitutionalism b. common law.c. Hammurabi's Code. d. the rule of law

chemistry

What is Dalton's law of partial pressures? Explain how this law relates to the fact that mountain climbers must carry tanks of oxygen when scaling high peaks.

bus/415

What is the chronological order of the major legislation that makes up the history of employment law in this country? For each law, state the social problem the law was designed to address, and discuss how employment law has affected the workplace in the last two decades.

rate law chemistry

hey so this is for rate law if the first step is the slow step. it is also an equilibrium. I just want to check if this is right. [Acetophenone]+[Ethoxide]<-k1--> k-1 [Intermediate]+[Ethanol] Just want to make sure this will be the rate law: k1/k-1 [Acetophone][Ethoxide...

law

there are two kinds of law in south africa.write a paragraph in which you identify these two kinds of sources of law;name the examples of sources of law that belong to each kind;and indicate the differences betweem these teo kinds of sources of law.

chemistry

what is the difference between the combined gas law and the ideal gas law? are they the same thing?

chemistry

Calculate the solubility of in water at a partial pressure of of 140. torr at 25°C. The Henry's law constant for is for Henry's law in the form C = kP, where C is the gas concentration (mol/L).

government

the election process is largely governed by a. state law b. federal law c. local law d. PACs b

LAW

Can someone please explain to me how you could tell the difference between public law and private law?

CHEMISTRY

sorry! this is the full question: Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 1.78 g of sodium and 2.74 g of chlorine. Which of the following could be the results of the decomposition of the other sample, being consistent...

math Law of Syllogism and Law of Detachment

What is the difference between Law of Detachment and The Law of Syllogism ? pLEASE provide an example of both thx.

Physics

What is the connection between Weber’s Law, Fechner’s Law, and Steven’s Power Law

Chemistry

Can you tell if Beer's Law holds for your stock solutions as well as in the calibration range? Why or why not? (P.S. this is a lab question and Beer's Law equation is: A(absorbance) = a(absorptivity) x b(path length) x c(concentration))

Business Law

1. The Law that enables the federal government to remove from the market any food shown to cause cancer is the A. Consumer Product Safety Act B. Right to Health Amendment C. Strict Liability Rule D. Delaney Amendment In my book it was confusing because it stated that the law ...

criminal law

1 Constitutional law The law as expressed in the U.S. Constitution and the various state constitutions. The U.S. Constitution is the supreme law of the land. State constitutions are supreme within state borders to the extent that they do not violate the U.S. Constitution or a ...

Health

If HIPAA rules are sticter than state law, which standard should you follow and why? This is what I beleive the answer is. Could somebody confirm that I'm at least on the right trail or that this is right or wrong? Answer: The stritest law prevails, whether it's state or ...

law

In their professional capacity, attorneys strive to make sure that their clients’ interests are protected by: (Points: 5) regulation. law. the bar association. guidelines Is it "Law"

Sociology

That a judge has to issue a warrant for a household search derives from ____________. a) probable cause b) substantive law c) procedural law d) mala en se law I believe the answer is (c)

technology

Need help on the question below. I have read all about all 3 laws but still don't understand if this would be 1st or 2nd law. "A ball is rolling in a straight line on a hardwood floor. A cat hits it from the right, so the ball rolls left. Which Law of Motion is this? a. Netwon...

US Legal system and branches of government

consider the definition of private law and public law. Discuss the difference between these two sources of law. support with example.

Chemistry

may i plz get help ...regarding the statement of rate law..4rm the topic of chemical kinetics..i am unable to find the exact law statement..:( and i need it before mon.. i hope to get assissted soon! thankyou..!

Government

What is "Law Codes"? Law codes are the written law, published and recognized as the law.

Law

Write a paragraph on the sources of law in which you have to address the following aspects: The kinds of sources of law; examples of sources that belong to each kind; the differences between the kinds of sources of law; the source of law which you have to use; to which kind of...

AED 204

explain in no more than 150 words per law, what requirements each law places on educators in their classrooms Case Law Brown v Board of Education Parc v The Commonwealth of Pennsylvania Mills v Board of Education Section 504 of Public Law 93-112 Public Law 94-142 Americans ...

Chemistry Combined Gas Law

Hi so im reviewing or our long test tomorrow on combined gas law and gay lussac's well here, combined gas law i find it (maybe ) confusing to do this one, because theres no right answers because it is a practice exercise.. what i know on combined gas law is that pressure is ...

Chemistry- Henry's Law

Why Ammonia is a deviation from the Henry's Law,when it is dissolved in water? Does that has anything to do with Ammonia having Hydrogen bonds? Or what could be the reason?

chemistry

50cm/3 ofsulphur(iv) oxide were produced at stp when some quality of powdered sulpur were burnt in excess oxygen. (1) which equation is suitable.(2) what volume of oxygen was used up during the reaction.(3) which of the gas law is applicable. State the law.

chemistry

using the ideal gas law or the combined gas law,why does the air pressure inside the tires on my motorcycle increases during the time I am riding it. Consider what factors are being kept constant and what are changing and how. What if I weigh alot?

physics

Choose the correct description for each "Law" of Electricity & Magnetism. The choices are faradays law lenz law ampere law are my choices correct Gives the amount of current resulting from a changing magnetic field.AMPERE LAW Gives the strength of the magnetic field resulting ...

Inorganic Chemistry

Which aqeuous solution has a freezing point closest to that of 0.30M C12H22O11? A) 0.075M AlCl3 B) 0.15M CuCl2 C) 0.30M NaCl D) 0.60M C6H12O6 I know the answer but I don't know the reason or rationale behind it. Please explain. I suggest you review Raoult's Law at http://...

Physics

How do I use Kirchhoff's First Law -- the law of conservation of energy and the law of conservation of charge to prove the equivalent resistance formula. Rt = R1 + R2 + R3 ......

law

looking for an article relating to civil law, The article can no be older than December 2010 and it has to relate to the contemporary law and justice. Any suggestions?

LAW

looking for an article relating to civil law, The article can no be older than December 2010 and it has to relate to the contemporary law and justice. Any suggestions?

Family Law

Do the civil law remedies available in Family Law Act 1996 adequately protect victims of domestic violence?

Physics (deriving Keplers 3rd law)

How do I derive a straightforward form of Kepler's 3rd Law if I start with Newtons's Law of Gravitation. (the opposite of what Newton did)

trigonometry

Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" I have to use logarithms and law of tangents . and then provide the check. which says law of sine or mollweids equation. I can't us the cosine law. If you ...

law

What are the two main functions of criminal law? Describe the written sources of American criminal law and their purposes.

HSM230

Assignment: HSM Law Profile Paper · Due Date: Day 7 [Individual] forum · Select a current or proposed law that impacts the delivery of human services. · Write a 1,050- to 1,400-word paper in APA format that answers the following questions: o What reliable resources are ...

hsm230

Assignment: HSM Law Profile Paper · Due Date: Day 7 [Individual] forum · Select a current or proposed law that impacts the delivery of human services. · Write a 1,050- to 1,400-word paper in APA format that answers the following questions: o What reliable resources are ...

Columbs Law

I need help with the following questions from my homework. thanks! How does one coulomb of charge compare with the charge of a single electron? How is coulombs law similar to Newton's law of gravitation? How is it different?

Social studies

Among the first laws passed by FDR was the Truth-in-Securities Act. How did it support his New Deal goals? A The law’s purpose was to make sure farmers’ investments were safe. B The law’s goal was to prevent another economic crash. C The law was focused on helping those ...

physics

1. Suppose that the strength of the electric field about an isolated point charge has a certain value at a distance of 1 m. How will the electric field strength compare at a distance of 2 m from the point charge? I know it's At twice the distance the field strength will be 1/4...

Social Studies

Among the First Laws passed by FDR was the Truth-in-Securities Act. How did it support his New Deal Goals? A. The law's Purpose was to make sure farmers' investments were safe. B. The law's goal was to prevent another economic crash. C. The law was focused on helping those who...

Algebra 2

Using the information given about a triangle, which law must you use to solve the triangle? Law of Sines, Law of Cosines, or Neither. ASA SSS SAS AAA SSA AAS

Media Law

In what ways does the history of copyright law impact on the nature of copyright law today?

business law

A NEW STATE LAW MANDATES THAT ALL EMPLOYERS MUST PORHIBIT SMOKING ON PRESMISES. THE LAW FURTHER PROVIDES THAT ANY EMPLOYER WHO ALLOWS EITHER AN EMPLOYER OR A CLIENT/CUSTOMER TO SMOKE BE SUBJECT TO A COURT ORDER REQUIRING THE EMPLOYER TO ENFORCE THE LAW. DESCRIBE THIS STATUTE ...

English

What is an explanation when someone says: "The our crime's worse than a murderer's. His act puts him outside the law, but keeps the law intact. Ours would weaken the law." P.s. These men are forming a posse to hang a gang that killed one of their townsmen.

business law

A NEW STATE LAW MANDATES THAT ALL EMPLOYERS MUST PORHIBIT SMOKING ON PRESMISES. THE LAW FURTHER PROVIDES THAT ANY EMPLOYER WHO ALLOWS EITHER AN EMPLOYER OR A CLIENT/CUSTOMER TO SMOKE BE SUBJECT TO A COURT ORDER REQUIRING THE EMPLOYER TO ENFORCE THE LAW. QUESTION: DESCRIBE THIS...

english + law - creating sentences

Use Amending formula, rule of law and civil law individually in sentences. Please help me form sentences, i cannot crack my brain around these three.

Chemistry

Determine the rate law, including the values of the orders and rate law constant, for the following reaction using the experimental data provided. Q + X yields products Trial [Q] [X] Rate 1 0.12 M 0.10 M 1.5 × 10-3 M/min 2 0.24 M 0.10 M 3.0 × 10-3 M/min 3 0.12 M 0.20 M 12.0...

Chemistry

b) Write 3 – 4 sentences to describe the first law of thermodynamics and use it to describe what happens when two substances at different temperatures come in contact with each other. I know the first law states that "energy can neither be created nor destroyed" but I ...

History

1. Why do some argue that the Supreme Court "legislates from the bench" or, in other words, actually makes law? A. The Supreme Court does not legislate, i.e. make law. B. The Supreme Court is involved in administrative law. C. The Supreme Court's rulings become part of ...

Business Law

The concept of federal law taking precedence over state or local law is commonly called the __________. A. Preemption Doctrine B. Bill of Rights C. Due Process Clause D. Free Exercise Clause Answer :B

How a Bill Becomes a Law

What do i write on i have to pick and law and then do the steps of how it becomes a law....

Law

1. What does the expression, “Policing by the letter of the law” mean? A. Police officers strictly interpret and enforce the law according to the exact statements of the law. B. Police officers loosely interpret and enforce the law according to the intentions behind the ...

Another Law question

An action in________ law would be the most appropriate way to stop a construction company from razing a 150-year-old house that sits on property that you claim as your own. A. common B. equity C. criminal D. civil This would be an action in civil law. Am I correct? An action ...

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