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August 1, 2014

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Algebra 2
You are cooking chili. When you take it off the stove, it has a temperature of 205°F. The room temperature is 68°F and the cooling rate of the chili is r = 0.03. How long will it take to cool to a serving temperature of 95°F
February 20, 2012 by Me

math
a memo cube is1 cubic unit. christine packs 6 memo cubes into a box. there is room in the box for 8 more cubes.what is the volume of the box?
March 1, 2013 by unsure

math
a memo cube is1 cubic unit. christine packs 6 memo cubes into a box. there is room in the box for 8 more cubes.what is the volume of the box?
March 2, 2013 by unsure

English
Why is the antecedent considered to be "patients" in this phrase? "The antecedent in the following sentence is patients: Doctors should schedule more time for patients so they do not spend so much time in the waiting room."
October 30, 2009 by chicken

math
a chemistry experiment calls for 30% sulfuric acid solution. if the supply room has only 50% and 20% sulfuric acid solution on hand,how much of each should be mixed to obtain 12 litres of 30% solution?
October 20, 2011 by patel

math
a chemistry experiment calls for 30% sulfuric acid solution. if the supply room has only 50% and 20% sulfuric acid solution on hand,how much of each should be mixed to obtain 12 litres of 30% solution?
October 20, 2011 by patel

HHS265
The child and family government benefits seminar was such a success that Advocates for Children will conduct a second seminar in an adjoining community. The executive director decides that this second seminar will attempt to maximize revenues. Consequently, no reduced fee ...
September 21, 2008 by shashana

Language/Listening Skills
Would (D) be the best answer for this question? Listening activities should be: A. on the floor,in a corner of the room. B. in a large area for children to have space and feel comfortable. C. required of all students D. in a small area with the least number of distractions.
September 7, 2007 by Shannon Beth

college physics
A particularly beutiful note reaching your ear from a stradivarius violin has a wavelength of 39.1cm. The room is slightly warm, so the speed of sound is 344m/s. If the string's linear density is 0.670g/m and the tension is 140N, how long is the vibrating section of the violin...
February 3, 2010 by genevieve

English ms. sue
ms. sue for the book catcher in the rye i am being ackley describing holden, and i choose the 2nd incident when holden goes to ackleys room that one night after getting socked from stradlater. i not know what be a good title for this creative writing thing?
October 14, 2012 by Mohammad

chem
A sample of air contains 14.5 µg/m3 of beryllium dust. How many atoms of beryllium are present in a room with dimensions of 11 feet by 13.9 feet by 17.5 feet? Answer in units of atoms.
February 1, 2011 by pho le

science
A sample of air contains 32.7 µg/m3 of beryllium dust. How many atoms of beryllium are present in a room with dimensions of 8 feet by 13.6 feet by 15.6 feet? Answer in units of atoms
July 24, 2012 by hanan

algebra
calculated area of a room is 174.2 square feet and the actual area is 149.6 the question was 'What is the relative error of the area to the nearest ten-thousand?' Im confused about what is relative error and how can i get that?
January 22, 2010 by sally

TEACHER AIDES
13. The stress factor which is likely to cause the most severe behavioral consequences for children is A. living in a stepfamily. B. having a working mother. C. living in persistent poverty. My answer is C.
June 6, 2011 by sara

math
A recreation room has the following dimensions.12ft,30ft,8ft,8ft. Carpeting will cost $1.50 a square foot. How many square feet of carpet will be needed and how much will it cost? Include correct units at each stage within your solution.
May 11, 2011 by kozy

Mathhh
what is PSU's (penn state university)"annual scholarship" i have to fill out the yearly tuition & the room and board amount which all equals to $36,144. I need the annual scholarship amount but idk where to find that information...
May 30, 2011 by surfsupmel

Physics
A tall strongman of mass m = 93 kg stands upon a scale while at the same time pushing on the ceiling in a small room.If the scale reads 1062 N (about 239 lb), what is the magnitude of the normal force that the ceiling exerts on the strongman?
September 21, 2012 by Anne

Chemistry
SHOW WORK A cylinder containing 48g of nitrogen gas at room temperature is placed on a scale. The valve is opened and 12g of gas are allowed to escape. Assuming that the temperature of the cylinder remains constant, how does the pressure change?
December 4, 2013 by Caitlyn

algebra
summer begins from june 1st until august 31st. i can make $6.00 per hour working in a camera shop. $800 is the cost of living expenses. write equations for earning exactly $1000 and $2000 that include hourly wage and the cost of living expenses.solve your equations to ...
October 25, 2009 by eon

English
Here are some more sentences I really need you to check. Thank you. 1) His work (better job) consists in changing the words of the news as the Party wants to, in order to control people. 2) The party aims to eradicate individuality. The information provided by the telescreen ...
March 10, 2012 by Henry

College Chemistry - Science
At room temperature (25°C), 45 mL of a 0.002 M acid solution reacts with 30 mL of a NaOH (aq) solution (pH = 11.95), determine (through calculations) whether the acid is phosphoric acid (H3PO4), acetic acid (CH3COOH), or carbonic acid (H2CO3).
March 2, 2014 by Anonymous

Math
On a scale drawing,the scale is 1/4 inch:1 foot. Find the dimensions of each room in the scale drawing. How would you find the answer? 10 feet by 9 feeet
June 9, 2010 by Nina

Types of Business writting
Revised and errors corrected , is it ready for submittance? Dear Mr. Dittmer: I am writing to you to request a trainer for our seminar on sexual harassment and unlawful discrimination in the workplace for twenty of our office supervisors. Our company would also like to take ...
March 29, 2012 by Shawna

English
Could you please check these two sentence? Thank you. The deposit I paid for the hotel room will be retained (??) by the hotel if I cancel my booking a week before due/arrival. 2) In Coleridge's The Rime of the Ancient Mariner (in italics) the storm, for example, is ...
June 23, 2011 by Henry1

english
Which sentence shows correct punctuation of an introductory structure? When I ran across the tile I lost my balance and slipped. If I had stayed late on Friday, I could have caught up on my work. Well I delivered the memo to Mr. Jenkins last week. Miriam ran the copies, and ...
February 13, 2013 by someone

psychology 220
1.74 (1 pts.) You are a therapist and one of your clients has just told you that he is planning to murder his neighbor. Based on the principle of "duty to warn" what is the primary thing you should do? A) Ignore your client's threat. B) Notify the potential victim's family. C...
December 10, 2012 by G. KAY

English
I made the changes you wrote. Can you please check if everything is OK? 1) The rooms are all set in a way that one cannot see from one room to another; besides, each room has a Gothic window and ornaments of the same colour. 2) Only the last one is all black with a red window...
August 31, 2011 by Henry2

chemistry
Which of the following are solutions? Choose all that apply. (Note: do not pick heterogeneous systems that contain a homogeneous phase.) - Cold coffee or cold tea. -Cigarette smoke. - Tap water. - Milk. - Fog. - The air typically found in a room. - Pure water.
September 6, 2010 by Tiffany

English
I did not realize how important it was to collaborate with the staff at school, such as janitors, until I need them in my room. Teachers have so many responsibilities, and for that reason, it is beneficial for evryone to have as much help as possible. Are this sentences ...
April 1, 2011 by Pete

physics
A child has a temperature of 101◦F. If her total skin area is 13 m2, find the en- ergy loss per second due to radiation, assum- ing the emissivity is 1. The Stefan-Boltzmann constant is 5.6696 × 10−8 W/m2 · K4 . (As- sume the room temperature is 70◦F.) Answer...
October 21, 2012 by Lee

Physics
A student, crazed by final exams, uses a force P of magnitude 80 N to push a 4.0 kg block across the ceiling of his room. If the coefficient of kinetic friction between the block and the ceiling's surface is 0.42, what is the magnitude of the block's acceleration?
November 2, 2010 by Lily

Science
Suppose in a restaurant your coffee is served about 5 or 10 minutes before you are ready for it. If you want the coffee to be as hot as possible when you drink it, should you pour in the room temperature cream right away or when you are ready to drink the coffee?
July 14, 2011 by Kandi

economics
You are a team working for an economic consulting firm; your client is “The New Delmonico Steakhouse,” a high-end steak place with four restaurants in Manhattan. Your client is considering opening a single restaurant in Chicago (in the Loop), and wants assistance in making a ...
May 15, 2008 by Tiffany

1 question Science check answer
4. Which is NOT a true statement? a. Not all fats are bad for you. b. Fats can increase your risk for heart disease. c. Saturated fats are liquid at room temperature. d. Unsaturated fats come mainly from plant foods. my answer is C. I that right
November 9, 2012 by Jman

u of s
A black thin-walled cylindrical can, 10.0 cm in diameter and 20.0 cm tall is filled with water at 100°C and suspended in a 20°C room. Determine the initial rate of heat transfer due to radiation, and the initial rate of change of temperature of the water. (Neglect any ...
January 27, 2013 by cz

English 10
Add punctuation to the following excerpt. Irving continues in those days, the heart of lover could not contain more than one lady at a time a modern gallant has often room enough to accommodate half a dozen either the hearts of the gentleman have grown larger, or the persons ...
June 27, 2013 by Sally

chemistry
an aqueous solution contains 2 solutes A&B.A is soluble in hexane,B is not.Hexane is liquid at rom temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe giving full practical details how you would produce a pue sample of solute A.
February 11, 2010 by Natalia

social studies
Lloyd is sitting in the waiting area of a swank restaurant anticipating a dinner meeting with a new client whom he has never met. All he knows is that the new client is named Chris. When he first meets Chris, which one of the following pairs of characteristics will Lloyd ...
January 17, 2013 by phia

science
Sedimentary rocks that form from living or once-living material are called____.? a) clastic b) dolomitic c) sandstone d) chemical precipitates e) organic Just need to know if my answer or right or wrong. Thanks! :) e
August 20, 2010 by ant

Physics
An object initially at a temperature of 80 C cools by 1 C in a time of 15 s when placed in a 20 C room When the object's temperature reaches 50 C, what is the average rate at which the object cools?
March 28, 2011 by dan

math
If a room is 13 feet wide and 18 feet long, how many feet is it from one corner to the opposite corner? Round to one decimal place.
May 25, 2013 by Emma

Elem. Ed.
I need help with this question: Which of the following would be best for you to do if a parent lingers in the classroom on the first day after their child has become happily engaged in some activity? 1. Suggest to the parent now is the time to say good-bye to their child. 2. ...
May 4, 2007 by Jill

math
A carpenter is building rectangular walls for a room addition. The width of a section of wall is two times the height h. Each section has a brace that connects two opposite corners of the section. What is a simplified expression for the length of a brace?
April 2, 2013 by Jane

teaching
Collecting tickets and money from students, encouraging good manners, and helping with cleanup are tasks associated with which duty? A Monitoring the playground B Monitoring the lunchroom C Monitoring the halls D Monitoring the in-school suspension room I think its Monitoring ...
April 15, 2011 by Bree

Essay
I've written an essay and I'd like to know if there is any help you can give me on how to make it better or is it okay as is? It felt as if I were unconscious. I couldn’t think straight at that point in time; things were happening so fast, and I wasn’t able to grasp reality. ...
January 9, 2009 by Preston

ohys101(heat)
a person had a skin temperature of 33degrees celcuis and was in a room where the walls were at 20degrees celcuis.if the emissivity is 1 and the body surface is 1.5meter squad,what is the rate of heat loss due to radiation? alpha=0.000000567W/meter squad k exponent 4
April 29, 2010 by KABELO

OCHem
The amount of methylcycloheane with the substituent in the equatorial orientation at room temperature (25C) would be The Gibbs free energy for axial methyl to equatorial methyl is -7.28Kj/mol (the universal gas constant is 8.314 j/deg-mol). I cant remember how to solve this...
December 10, 2010 by Alex

English
I need help on this question: Which sentence does the verb correctly agree with the subject: A. A copy of Moby Dick and a magazine has disappeared from my room. B. Peggy or Phillis drive me to Flordia every winter. C. Les and Miranda is late for work today. D. Not only the ...
March 24, 2008 by Jin Kobeaux

health
During an emergency room examination for an injured arm, the physician palpates the arm’s entire length, starting at the shoulder and ending at the fingers of the hand. This process takes him from a/an _______ position. A. right to left C. anterior to ventral B. proximal to ...
March 23, 2009 by Mandy

business
Identify the sentence with the correct adjective or adverb. Dorie is the short person in the room, standing at just five feet tall. My mother has five children, and I am the oldest. Habanero chilies are more hotter than jalapeno peppers. Although Ralph's panic attacks were bad...
May 27, 2010 by Anonymous

Math
My teacher gave me a box and told me to see how many I could fit in the class room without taking out the heater or the desk. Ive tried many different things but I just cant figure it out. I dont know the measurments or anything. How do I do It? The desk has cupboards and ...
February 12, 2008 by Alex

please help!
You are 10 m away from a sound source of intensity comparable to the background noise in a very quiet room (20 dB). If you want the intensity in dB to double, you must move to a distance ... A) 100 m B) 20 m C) 7 m D) 5 m E) 1 m the answer is 1 m, but I'm not sure how to ...
January 20, 2010 by dawn

English
Which of the following is NOT a Gothic element in this novel? A. the low, demonic laugh in the hall at midnight B. strange laughter in a hidden, upstairs room C. the mysterious fire in Rochester’s bedroom D. the young Jane’s growing love for the older, moody Rochester E. Jane’...
May 26, 2013 by Caroline

math
Write an expression from the model below and then simplify the expression. Positive Negative Which equation is modeled on the number line below? (-56)/(-8) = 3- (-4)= 7.1 (Rational Numbers) No Calculators Fill in the chart below. Base of 10 Whole Number or Fraction Decimal ...
February 2, 2012 by Michelle

4th grade
what are 10 (things (living and non-living things)that a barracuda need to live a healthy life?
November 11, 2008 by aaron

chemistry
Balloon X is filled with the carbon monoxide. Balloon Y is filled to the same volume with carbon dioxide. The balloons are left for several days in a room at constant temperature. Which balloon would you expect to be smallest after this period of time?
April 1, 2011 by Morgan

Geometry
A gallon of paint costs $20 and covers 465 square feet. Three coats of paint are recommended for even coverage. The room to be painted is 12 feet high, 20 feet long, and 20 feet wide. How many gallons are needed to paint the walls?
May 4, 2011 by Need Help

Physics
A student, crazed by final exams, uses a force of magnitude 86 N and angle θ = 61° to push a 5.2 kg block across the ceiling of his room, as in Figure 6-52. If the coefficient of kinetic friction between the block and the ceiling is 0.34, what is the magnitude of the ...
October 23, 2011 by Tom

Physics
A student, crazed by final exams, uses a force of magnitude 86 N and angle θ = 61° to push a 5.2 kg block across the ceiling of his room, as in Figure 6-52. If the coefficient of kinetic friction between the block and the ceiling is 0.34, what is the magnitude of the ...
October 24, 2011 by Ted

physics
An unclothed student is in 24 ◦ C room. If the skin temperature of the student is 37 ◦ C, how much heat is lost from his body in 6 min, assuming that the emissivity of the skin is 0.83 and the surface area of the student is 1.5 m2 . The Stephan-Boltzmann constant ...
February 19, 2012 by Ivan

physics
The atoms in a gas can be treated as classical particles if their De Broglie wavelength is much smaller than the aveage separation between the particles d. consider monatomic helium gas (mHec^2 = 3727. molar mass = 4g/mol) at 1 atmosphere of pressure and room temperature. ...
December 9, 2009 by Little Miss X

Grammar and Composition
There are some people in this world that you can’t live without, and then there are some other people who you just can’t bear to live with. That second category is the one that I have to deal with all day, everyday. Sure she’s a few years younger than me, so what? Does that ...
November 11, 2009 by y912f

Grammar and Composition
There are some people in this world that you can’t live without, and then there are some other people who you just can’t bear to live with. That second category is the one that I have to deal with all day, everyday. Sure she’s a few years younger than me, so what? Does that ...
November 12, 2009 by y912f

College Chemistry
A 38 L gas tank at 35 Celsius has nitrogen at a pressure of 4.65 atm. The contents of the tank are transferred without loss to an evacuated 55.0L tank in a cold room where the temperature is 4 Celsius. What is the pressure of the tank??
March 2, 2010 by Smith

Social Sciences, 3 scenarios
In small rural communities, nearly everyone knows everyone else and there is considerable social interaction. A duel relationship arises for a social worker when he or she provides professional services for a client and enters into a business or social relationship with that ...
September 14, 2011 by Chelsea

accounting 101
Preparing A Journal Entry. I need help telling whether it's accounts receivable, rent expense, etc. Also determining whether it's debit or credit. I understand everything else like the T-account and Trial Balance, just determining what they are is what I'm having trouble with...
September 16, 2010 by James

Biology
41. A group calling itself "Virus Alive!" believes that viruses are living organisms. They have petitioned the scientific community to include viruses in the biological classification system. You are a scientist assigned to explain to this group that, although they share many ...
February 20, 2010 by mysterychicken

Greatest Common Factors
In the lunch room, 36 fith-graders and 27 fourth-graders are sitting in equal groups. All the students in each group are in the same grade.What is the greatest number of students who could be in each group?
September 16, 2008 by jess

math
leah wants to put square floor tiles that measure one foot on each side in a room that is 9 feet and 9 feet wide. How many floor tiles will leah need? is your answer reasonable? explain why
March 2, 2010 by jojo

calculus
a rectangular room is 20 ft by 12 ft by 8 ft. If the length is decreasing by 4 inches per minute, the width is decreasing by 5 inches per minute and the height remains constant, how fast is the volume changing after 2 minutes?
January 5, 2011 by Anonymous

physics
A student, crazed by the first physics Midterm, uses a pushing force of 80 N angled at 70° to push a 5.0 kg book across the frictionless ceiling of his room. a. What is the block's acceleration? b. What is the force of the ceiling on the book?
April 8, 2013 by Corey

Criminal Courts
What is it meant when it says theory that law is a living body? Is this because like living organisms the law is always growing and changing?
November 26, 2010 by Robin

Physics
A person in a dark room looking through a window can clearly see a person outside in the daylight, whereas the person outside cannot see the person inside. Explain.
March 3, 2008 by Mike

9
In an closed vessel 300 torr of argon gas is filled and the vessel heated to 925 degree celcius from room temperature. What will be the pressure at 925 degree celcius .
May 11, 2010 by radhakrishnan

science
The average velocity of molecules of nitrogen gas (N2) at room temperature is around 500 m/s. If you were to raise the temperature of the nitrogen gas by 50°C what is a good estimate for the speed of the molecules?
May 3, 2011 by aaronia

English
He was reading about diamonds when his father entered his room. (Was he reading a book, or was he reading passage about diamonds on the Internet?)
October 12, 2013 by rfvv

English
Here are some more sentences for you to check. Thank you. 1)The trip showed me that there is a big world outside.I decided to take (??) the trip to keep my family good company and to know them better. 2)The journey on car (by car) was very boring. 3)The trip by car was long ...
April 22, 2011 by Mike1

science
what are 10 (things (living and non-living things)that a barracuda need to live a healthy life?
November 11, 2008 by aaron

physical science
a 1.0 kg sample of metal with a specific heat of 0.50KJ/kgCis heated to 100.0C and then placed in a 50.0g sample of water at 20.0C. What is the final temperature of the metal and the water? I can't figure this out. Is the answer room temperature???
November 7, 2007 by nate

Math
Mrs. Lopez wants to retile her 16 ft by 18 ft dining room. a. How many 1 sq ft tiles does she need? I calculated 288 tiles b. She changes her mind and wants to use 4 in by 4 in square tiles. How many square tiles does she need? I'm stump on how to answer this part of the question
April 12, 2010 by Nam

physics
Julie carries an 8.0-kg suitcase as she walks 18 m along an inclined walkway to her hotel room at a constant speed of 1.5 m/s. The walkway is inclined 15 degrees above the horizontal. How much work does Julie do in carrying her suitcase?
December 15, 2011 by cheryl

teacher aide
In the classroom, the reverse mainstreaming/inclusion technique is used A only with mildly retarded students B more often than the resource room for behavior disordered students C to place special needs students in the majority D effectively to teach math and reading I think ...
May 17, 2011 by Rosie

Chemistry
The esterification of acetic acid and ethanol is given by the reaction below: C2H5OH(aq) + CH3COOH(aq)===>CH3COOC2H5(aq) + H2O(l) When 1.00 mol of ethanol was mixed with 2.00 mol of acid in a 1.00 L flask, 0.86 mol of ester was formed at room temperature. What is the value ...
March 4, 2010 by Bababab

Chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.31 kg m-3. Under these conditions the total surface area of the balloon is 0.11 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by Odesa

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.7 kg m-3. Under these conditions the total surface area of the balloon is 0.52 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by Anonymous

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.35 kg m-3. Under these conditions the total surface area of the balloon is 0.57 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by lena

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.87 kg m-3. Under these conditions the total surface area of the balloon is 0.87 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by troubled student

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.5 kg m-3. Under these conditions the total surface area of the balloon is 0.72 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by student

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.5 kg m-3. Under these conditions the total surface area of the balloon is 0.72 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by student

Chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.31 kg m-3. Under these conditions the total surface area of the balloon is 0.11 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by Paul

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.35 kg m-3. Under these conditions the total surface area of the balloon is 0.57 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by timur

chimistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.82 kg m-3. Under these conditions the total surface area of the balloon is 0.39 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by School girl

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.35 kg m-3. Under these conditions the total surface area of the balloon is 0.57 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by student

Chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.87 kg m-3. Under these conditions the total surface area of the balloon is 0.87 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by mangozier

Chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.79 kg m-3. Under these conditions the total surface area of the balloon is 0.47 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by anonymous

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.86 kg m-3. Under these conditions the total surface area of the balloon is 0.56 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by kkr

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.35 kg m-3. Under these conditions the total surface area of the balloon is 0.57 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 15, 2012 by anita

Problem
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.92 kg m-3. Under these conditions the total surface area of the balloon is 0.26 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 15, 2012 by asd

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.92 kg m-3. Under these conditions the total surface area of the balloon is 0.26 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 15, 2012 by asd

Chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.35 kg m-3. Under these conditions the total surface area of the balloon is 0.88 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 15, 2012 by JoeBob

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