Thursday
December 8, 2016

# Search: College Chemistry- Hess&#39;s Law

Number of results: 69,019

Chem
Set up a Hess’s law cycle, and use the following information to calculate ΔH∘f for aqueous nitric acid, HNO3(aq). You will need to use fractional coefficients for some equations. 3NO2(g)+H2O(l)→2HNO3(aq)+NO(g) ΔH∘ = -137.3 kJ 2NO(g)+O2(g)→...
June 17, 2014 by Meg

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?
November 8, 2012 by Ania

college kinetics chem
what is the rate law for 2OF2 yeilds O2 + 2F2
October 9, 2010 by Anonymous

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.
August 4, 2008 by Dan

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.
August 17, 2010 by Shelly

Chemistry
CONTINUE>>>>>>>>>>> The enthalpy changes for two different hydrogenation reactions of C2H2 are: C2H2+H2---->C2H4 Delta H 1 (there is a degree sign....standard enthalpy of formation??) *****WAIT A SECOND, IF I USE THE HEAT OF FORMATION ...
November 14, 2013 by Anonymous

college
i want a custom Business law case written. It's about a page or two.
May 23, 2010 by Mounika Kunnuri

college algebra
Use the associative law of addition to write an equivalent expression for (x+2)+y
August 7, 2016 by Angelica

chemistry
standard enthalpies of formation H20(l) = -286 LiOH(s) = -487 standard enthalpies of solution for LiOH(s) to split into it's ions is 21 all values are in KJmol-1 Use the data given to calculate a value for the enthalpy change for the reaction of lithium with water. I get how ...
February 8, 2011 by Gemma

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...
March 18, 2015 by help me lol

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.
March 16, 2014 by nancy

chemistry
what is the difference between the combined gas law and the ideal gas law? are they the same thing?
March 2, 2009 by kayla

government
does anyone know any website that I can find about Government law to answer the following question? [c] Comrade Nikolai, a communist, wishes to hold a Saturday rally in LeBard Stadium at Orange Coast College, but several Costa Mesa citizens object. [d] Ethan Moses, a black ...
November 9, 2008 by dt

Note to physics, chemistry students
Please note the spelling of Physics, and Chemistry. If you are a college student in those courses, and cant spell them, frankly, asking for help here is insulting to your college and you.
October 26, 2008 by bobpursley

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).
October 5, 2016 by Amber

government
the election process is largely governed by a. state law b. federal law c. local law d. PACs b
December 27, 2007 by jere

LAW
Can someone please explain to me how you could tell the difference between public law and private law?
October 13, 2008 by Mae

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...
September 24, 2015 by Diana

College Chemistry
Calculate the electrode potential of a copper half-call containing 0.05M Cu(NO3). E^0 Cu2+/Cu = 0.337 V College Chemistry - DrBob222, Tuesday, April 20, 2010 at 5:19pm E = Eo - (0.0592/n)log[(Cu)/(Cu^+2)] Substitute 2 for n and 0.05 M for Cu^+2 and 0.337 for Eo. Solve. Am I ...
April 20, 2010 by L**

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.
November 14, 2008 by Naya

chemistry
I am a freshman in college, and am taking a placement test soon, but haven't seen chemistry since 10th grade. I'd appreciate any help I can get from anyone here to help me solve this problem: Hydrogen and sulfur chemically combine to form the gas hydrogen sulfide, according to...
January 5, 2012 by John

Physics
What is the connection between Weber’s Law, Fechner’s Law, and Steven’s Power Law
September 6, 2014 by Vanessa

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))
November 20, 2014 by Suzy

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 ...
February 10, 2015 by Tine

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 ...
October 28, 2009 by Mary

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 ...
October 22, 2008 by Dee

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"
October 12, 2011 by tobby

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)
November 4, 2012 by Tammy

College Chemistry
Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following. A: 11.2g of a gas that has a volume of 1.50Lat STP? B: .0710g of a gas that has a volume 825ml at 1 atm
October 21, 2012 by Will

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...
March 14, 2014 by Brandi

US Legal system and branches of government
consider the defination of private law and public law. Discuss the difference between these two sources of law. support with example.
November 20, 2015 by Elizabeth

Government
What is "Law Codes"? Law codes are the written law, published and recognized as the law.
January 4, 2007 by Jack

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..!
April 18, 2009 by humaira

GEOL 108
Do you have the answers to exercise 30 in Darrel Hess's Physical Geography Laboratory Manual tenth edition?
October 18, 2012 by arthur

law
In your opinion should there be a specific curriculum included in school and college syllabus which would teach students on interpersonal cohesiveness?
February 21, 2012 by sharday

CHEM
Can you please check my work? I got -4.3KJ/mol If this is not right can you tell me what I am doing wrong? Thank you! Questions. 1.a. Use Hess's Law and the measured mean enthalpy changes for the NaOH-HCl and NH3-HCl reactions to calculate the enthalpy change to be expected ...
November 8, 2013 by Lauren

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 ...
June 25, 2010 by TY

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 ...
January 28, 2014 by Joy

economics
Over the last 30 years in the United States, the realprice of a college education (i.e., after adjusting for inflation) has increased by almost 70 percent. Over the same period, an increasing number of high school grad- uates have sought a college education. (Nationwide ...
April 20, 2012 by Joanne

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.
February 17, 2012 by Promise

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?
February 24, 2014 by tricia

college chemistry
An unknown was prepared with the concentration of 0.000266 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1646.3 M^–1. What are the expected ...
April 20, 2009 by zahra

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 ...
May 1, 2011 by Ana

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 ......
May 27, 2012 by Art

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?
February 26, 2013 by Gabby

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?
February 26, 2013 by Gabby

Family Law
Do the civil law remedies available in Family Law Act 1996 adequately protect victims of domestic violence?
March 12, 2015 by Lionel

AP Chem
Reaction 1: NaOH + HCL --> H20 + NaCl delta H of -100.332 kj/mol Reaction 2: NaOH + NH4Cl --> NH3 + H20 : delta H of 358.639 kj/mol Reaction 3: HCl + NH3 --> NH4Cl : delta H of -51.701 kj/mol Use your answers from question 2 above and Hess's law to determine the ...
October 13, 2014 by Serena

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)
September 10, 2015 by Jason

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 ...
February 26, 2011 by Anon

College Chemistry
Oxygen has a Henry’s law constant of 1.3*10^-3 mol/kg*bar at 25 °C when dissolving in water. If the total pressure of gas ( gas plus water vapor) over water is 1.00 bar, what is the concentration of O2 in the water in grams per milliliter? (The vapor pressure of water at 25...
February 3, 2016 by Pablo

law
What are the two main functions of criminal law? Describe the written sources of American criminal law and their purposes.
December 13, 2009 by michelle

College Physics
If you slam your finger in a car door how can you thank Coulomb's Law for the fact your finger wasn't chopped off? I don't understand.
March 14, 2010 by J

criminal law/ college
I need to identify the bail sytem beneficiaries and what are some recommendations for the future of the bail system
May 25, 2010 by nette28

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 ...
November 3, 2008 by Loey

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 ...
May 16, 2010 by shauntae

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?
November 5, 2007 by Whit

chemistry
I'm trying to figure out what went wrong during my freshman chem lab. We were figuring out the enthalpy of formation of MgO(s). MgO(s) + 2H+(aq) -> Mg2+(aq) + H2O(l) dHrxn = -334.83kJ/mol Mg(s) + 2H+(aq) -> Mg2+(aq) + H2(g) dHxrn = -1105kJ/mol H2(g)+ 1/2O2(g) -> H2O(l...
April 5, 2013 by Louie

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...
July 14, 2010 by anonymous

college
I have to write a "journal article reviews" for Medical Law & Ethics. I have some articles already but don't know how to start it. thanks
November 21, 2010 by Mary

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
February 13, 2012 by Katy

college
Write a 350- to 700-word response describing three case law decisions from the chapter you believe have the most substantial impact on policing today.
February 13, 2010 by tiana

Media Law
In what ways does the history of copyright law impact on the nature of copyright law today?
October 6, 2009 by Breanna

College Hca 210
Write a 350- to 700-word paper on one of the following laws: HIPAA (1996) or EMTALA (1986). Pretend you are a health care manager employed at a small community hospital responsible for educating your staff about HIPAA (1996) or EMTALA (1986). Include the following in your ...
January 30, 2012 by Karen

College Chemistry
Now the reaction (2NO+2H2==> 2H20+N2) is believed to take place in three steps, the first of which is the fast reversible dimerization of NO to form N2O2, and the last of which (again fast) is the reaction N20 + H2 --> N2 + H2O. So, what is the slow (second) step? Then ...
April 17, 2012 by Crystal

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 ...
February 6, 2008 by DEE

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.
October 19, 2010 by Samantha

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...
February 6, 2008 by Dee

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.
January 25, 2011 by Farah

chemistry - decomposition of water(help)
Hydrogen is a very appealing fuel, in part because burning it produces only non-polluting water. One of the challenges that researchers face in making hydrogen fuel a reality is how to produce hydrogen economically. Researchers are investigating methods of producing hydrogen ...
March 3, 2011 by Farah

chemistry - decomposition of water(help)
Hydrogen is a very appealing fuel, in part because burning it produces only non-polluting water. One of the challenges that researchers face in making hydrogen fuel a reality is how to produce hydrogen economically. Researchers are investigating methods of producing hydrogen ...
March 3, 2011 by Farah

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...
March 4, 2016 by nan

College Help
I'm going to college this September, and would like to know of any good web sites for beginning college students.
July 28, 2008 by Sally

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 ...

misc.
if something says your pursuing a college degree does that mean your in college are are planning in the future to go to college?
May 27, 2011 by Sara

Chemistry
b) Write 3 â€“ 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 ...

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
July 14, 2016 by Angela

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....
April 15, 2016 by Lilly<3

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 ...
May 13, 2014 by Amy

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 ...
January 24, 2007 by Natasha

physics
The two small spheres each with mass m= 25g are hung by silk threads length L=.65m from a common point. When the spheres are given positive charge such that q1=2q2, each thread hangs stationary at theta=15 degrees from the vertical. Using Newton's first law and coulomb's law, ...
June 9, 2016 by someone

physics multiple choice MCQ 2- i need help please @all respective sir & bro
which of the following laws is applicable for the behavior of a perfect gas? a. Boyle's law b. Charles' low c. Gay-Lussac law d. all of the above e. joule's law
November 10, 2016 by hi bro it's me ( ^_^) himel@,Damon ,Steve,Henry. ,Ms.Sue .bobpursley& all respect sir

English
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 ...
October 28, 2009 by Mary

chemistry
so here i am doing my hw worksheet on the ideal gas law/ghram's law ad i have gotten to this one problem where i am totally stuck and confused. Please help me by telling me how to set this up and giving me tips, if necessary. What is the mass(in grams) of ammonia gas(NH{tiny #...
January 11, 2010 by hellogoodbie

Chemistry
The experimentally determined rate law for the reaction H2 + NO --> ½N2 + H2O is Rate = k[H2][NO]2. Is the mechanism below possible? Step 1: H2 + NO --> N + H2O Slow Step 2: N + NO -->N2 + O Fast Step 3: O + H2 --> H2O Fast 1. Yes, because the slow step ...
June 21, 2016 by Hs

Chemistry
I'm having trouble understanding Boyle's Law and Dalton's law of partial pressures. Can anyone help me work this please? Thank you A sample of propane gas, C3H8, was collected over water at 22.5 ºC and 680. torr. The volume of the wet gas is 3.89 L. What will be the volume of...
November 8, 2014 by Katie

statistics
At a small college it is known from previous years that 35% of all college freshman start in college algebra. The new freshman class has 100 students in it, What is the probability that between 35 and 42 freshman will start in college algebra? Is it reasonable to approximate ...
March 23, 2012 by lola

persuasive essay!!
Is it better to go to college and be successful or open your own business without a college degree? Need help writing thesis. What are some benefits of going to college rather than not going to college and opening your own business
March 24, 2008 by Taniya

chemistry
so here i am doing my hw worksheet on the ideal gas law/ghram's law ad i have gotten to this one problem where i am totally stuck and confused. Please help me by telling me how to set this up and giving me tips, if necessary. What is the mass(in grams) of ammonia gas(NH{tiny #...
January 11, 2010 by hellogoodbie

chemistry
So here I am doing my HW worksheet on the ideal gas law/graham's law ad I have gotten to this one problem where I am totally stuck and confused. Please help me by telling me how to set this up and giving me tips, if necessary. What is the mass (in grams) of ammonia gas (NH {...
January 11, 2010 by hellogoodbie

college
When is noble-case corruption, such as the Dirty Harry problem, justifiable? Must law enforcement use extreme means to catch criminals? Explain your answer in a 200-300 word reply.
October 22, 2009 by carolyn

Introduction to the Criminal Justice System
Is Common Law, Statute, and Jurisdiction sources of Criminal Law? What I have is, almost all criminal prosecutions today are based on criminal laws defined by statute rather than by the common law. That is true, because punishment is clearly stated in statue. Common law often ...
November 12, 2006 by Jo

HIPPA
please check my answer thanks If HIPPA law is stricter than state law, which standards should you follow and why ? What if state all was stricter ? This is all I have so far any input would be great HIPPA laws are stricter than any state law. This standard over rules any state...
May 12, 2008 by Casie

Bus law
Why is the United State a “common law country”? We're a common law country because we follow precedents established over hundreds of years in Britain and the U.S. Common law is followed except when statutory law opposes a specific practice. Check this site for more ...
February 19, 2007 by mike

College Chemistry lab
How do I Calculate the concentration of iron(lll) with absorbance measurement. Wavelength is 480nm, solution is 1 ml FeCl3 : 9ml HCl, absorption is .250A, concentration of stock FeCl3 solution is 0.00050M and stock HCl solution is 2.0M. I not sure how to use beer's law to find...
October 13, 2014 by Hannah

Anatomy & Physiology
How do the gas laws (Daltons, Boyles and Henrys)apply to the respiratory processes? I will be happy to critique your thinking on this. I know Dalton's Law is the law of partial pressures, Boyle's law is the law for a fixed mass of ideal gas at fixed temperature, the product of...
March 21, 2007 by Aletha

Geometry
Determine whether the statement (3) follows from statement (1) and (2) by the law of detachment or the law of syllogism. If it does, state which law was used. If it does not, write invalid. (1) if you study you will be smart (2) if you are smart you will win the spelling bee (...
June 2, 2016 by Kirage

Statistics
What percentage of college students are attending a college in the state where they grew up? Let p be the proportion of college students from the same state as that in which the college resides. If no preliminary study is made to estimate p, how large a sample is needed to be ...
August 1, 2012 by Anonymous

College physics
According to Newton's Third Law, for every action there is an equal an opposite reaction. If the current on the wire is such so that the magnetic force on the wire points upward, what must be true?
July 26, 2010 by emoni

AP US Government
Where in the Constitution are judicial nominations described? What language is used to describe the roll of the Senate in Supreme Court nominations? Where in the constitution is the Electoral College described (Hint: two places) Since this is not my area of expertise, I ...
September 27, 2006 by Kristin