Questions Asked on
November 16, 2008

  1. Chem

    81. Formic acid HCHO2, is a convenient source of small quantities of carbon monoxide. When warmed with sulfuric acid, formic acid decomposes to give CO gas. HCHO2(l) -> H2O(l) + CO(g) If 3.85 L of carbon monoxide was collected over water at 25 degrees C

    asked by Anna
  2. Calculus

    On a certain clock the minute hand is 4 inches long and the hour hand is 3 inches long. How fast is the distance between the tips of the hands changing at 4 pm?

    asked by Joe
  3. chemistry

    Find the false statement(s) about the thermochemistry experiment in which nitric acid is reacted with sodium hydroxide, and the enthalpy of the reaction is measured using an ice calorimeter. i. Regardless of which strong acid and strong base are used for

    asked by Anonymous
  4. physics (forces)

    arlene is walking across a "high wire" strung horizontally between 2 buildings 10.0 meters appart. the sag in the rope when she is @ midoint is 10 degrees. her mas is 50.0 kg. what is the tension in the rope

    asked by michael
  5. medical billing and coding

    Under CPT's definition, after a consultation, who takes responsibility for the patient's care? A.the referring physician B.the consulting physician C.the PCP D.the specialist

    asked by Felicia
  6. 12th Calculus

    a cone of height h and radius r is constructed from a flat, circular disk of radius 4 inches. by removing a sector AOC of arc length x inches. and then connecting the edges OA and OC. what are length x will produce the ocne of maximum volume, and what is

    asked by elley
  7. Chemistry

    A mixture of ethyne ( C2H2 ) and methane ( CH4 ) occupied a certain volume at a total pressure of 16.8 kPa. Upon burning the sample to form CO2 and H2O, the CO2 was collected and its pressure found to be 25.6 kPa in the same volume and at the same

    asked by Fred
  8. chemistry

    Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system ("on" or "by")? Note that no "en-on" cases appear here, as these are always thermodynamically unfavourable.

    asked by Anonymous
  9. chemistry URGENT (2)

    Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system ("on" or "by")? Note that no "en-on" cases appear here, as these are always thermodynamically unfavourable.

    asked by Anonymous
  10. English

    Are these two sentences correct? Adjectival prepositonal phrase: I like in our house the big kitchen to cook in. (in our house is the adjectival prepositonal phrase) Participal Phrase: I dislike ordering an item online to find a damaged package when it

    asked by Bethany
  11. chem

    The voltage of the cell Pt (s) I H2 ( 1 bar)I RNH2(0.1 M), RNH3+ Cl(0.05 M)IIS.H.E. is 0.49 V. Find kb of the base, RNH2

    asked by katya
  12. AP Chem

    Ammonium Chloride is a white solid. When heated to 325 degrees C, it gives a vapor that is a mixture of ammonia and hydrogen chloride. Suppose someone contends that the vapor consists of NH4Cl molecules rather than a mixture of NH3 and HCl. Could you

    asked by Anna
  13. calculus

    show that the area(A) of an isosceles triangle, whose equal sides are of length s and angle between them is theta, is A=1/2s^2sin theta

    asked by meeh
  14. math

    Please help me solve this word problem. If Leah is 6 years older than her sister, sue, and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue?

    asked by Becky1
  15. math

    I have trouble solving word problems. Can you tell me the best approach to solve this word problem? If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house together?

    asked by Becky
  16. AP Chem

    Phosphorus pentachloride is a white solid that sublimes (vaporizes without melting) at about 100 degrees C. At higher temperatures, the PCl5 vapor decomposes to give phosphorus trichloride and chlorine. How could gas-density measurements help to establish

    asked by Anna
  17. Algebra Word Problem

    Peanuts are selling for $2 per pound, and cashews are selling for $5 per pound. How much of each type of nut would be needed to create 20lb. of a mixture that would sell for $2.75 pre puund? Use the variables, p and c, to setup a system of equations.

    asked by pj
  18. medical billing and coding

    Under CPT guidelines, all services related to a surgical procedure are not additionally reimbured A.before the global period. B.after the global period. C. during the global period. D.during the E/M period.

    asked by Felicia
  19. Chemistry

    Why does the reaction of 2-bromo-2-methylbutane and ethanolic solution of silver nitrate interfered by the presence of water in the sodium iodide in acetone reagent? (Substitution chemistry) Thanks for any help!!

    asked by Andrew
  20. math

    I have trouble solving word problems. Can you help me solve this problem? If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take both of them to paint the house together?

    asked by Becky
  21. college

    why would you use the Turkey-Kramer procedure

    asked by Wanda
  22. science

    Fill in the blanks.1.The property of matter that enables us to defect leakage of (LPG)using our sense of smellis------------.

    asked by ra ny
  23. chemistry URGENT (1)

    What mass (in grams) of CaCl2(s) must be dissolved in pure water at 10.0 deg Celsius to make a 26.4 mL solution and to increase the solution temperature to 16.4 deg Celsius? Assume that there is no heat loss from the solution and that the solution has the

    asked by Anonymous
  24. math

    A word Problem Kris has an endless supply of 4-cent and 7-cent stamps for mailing a package. What is the greatest amount of postage that cannot be affixed to a package using these stamps?

    asked by Lauren
  25. science

    I can not think of a riddle to help me remember mitochondrion cytoplasm endoplasmic reticulum and organelle

    asked by Anonymous
  26. Legal Studies

    In reference to the case Michael Furlong R v SOrrell- defence of mental illness. Site the legal elements involved, his defence used, the role of legal aid, sentencing process and the reflection of the case on community standards.

    asked by Ryan.D
  27. French

    Using the imparfait tense, I am trying to form "was born." Would it be "néait" (in the il/elle/on form)? It doesn't look right to me..

    asked by Anonymous
  28. chem

    evaluate E^0 for the half reaction: CO2 (g) + 2H + 2e^- HCOOH ( Aq)

    asked by katya
  29. math

    A class of 43 students took an exam. They had a mean average of 67 and a standard deviation of 7. a) how many students got a c b) how many students got a b c) what is a scoree needed to get an a is a) 4 b) 1 c) 90

    asked by joe-c
  30. Unkown Filed of Math

    yah well this is a filed of math i'm not sure what it's called alright well her we go how do I graph on a flat piece of paper in four dimensions. I can do it on the computer simply but I'm not sure how to do it on a flat piece of paper

    asked by God Help Me
  31. algebra

    The perimeter of a rectangle is 106 inches,the length exceeds the width by 7 inches, find the length and the width

    asked by mikey123
  32. Physics

    Can someone help me with finding out the magnitude of the gravitational force a person with a mass of 67.5 kg would experience while standing on the surface of Earth? Thanx in advance.

    asked by Anonymous
  33. college algebra

    Part a 3x + 4y = 8 for y answer is -4 Using your answer from part a, find the corresponding value of y when x =8.

    asked by tondra
  34. French- numbers

    Is this the correct way to say "1841": mille huit cent quarante-et-un? Am I missing any dashes?

    asked by Anonymous
  35. Science

    I want to research or information about perception of time. For my Science Fair project, I'm starting a timer and then asking people to stop me when they think a minute is done. I want to know some information about this topic, esp. what are the most

    asked by Daniel
  36. Help please! Honors again.

    Help!! I'm confused. How low can you go? It's possible for a canidate to win the poplar vote (the vote of citizens) yet lose the electorial vote (the votes in the electorial college that accually determine the president). That's because every state gets a

    asked by Misty
  37. math

    Make up an example in which it is more convenient to divie first. Make another in which it is more convenient to multiply first. Why is it more convenient to multiply first in your second example?

    asked by sue
  38. acc

    10. Assume it is early 2003 and the following bond quotations appeared in the wall street journal Conoco Phillips COP 5.900 Oct 15, 2032 95.975 6.200 90 30 88,510 Amerada Hess AHC 7.125 Mar 15, 2033 100.145 7.113 179 30 55,000 a. How much in annual

    asked by sikander
  39. 3rd grade 1st year spanish

    I am so confused. This is my first year of spanish and I only have it 1 day a week. Our books are really small without any translated information. I need 2 words that start with the following letters in spanish with the english translation. Thanks for your

    asked by Claire
  40. 12th grade calculus

    let f(x)=x^2 1. show that the line tangent to the graph of f at the point (1,1)is y=2x-1

    asked by dt
  41. college algebra

    -3(x+5)+3=12

    asked by tina
  42. physics

    At what temperature does the numerical value in F match the numerical value in C?

    asked by Anonymous
  43. chemistry

    What mass (in grams) of CaCl2(s) must be dissolved in pure water at 10.0 deg Celsius to make a 26.4 mL solution and to increase the solution temperature to 16.4 deg Celsius? Assume that there is no heat loss from the solution and that the solution has the

    asked by Anonymous
  44. chem

    consider the cell Pt(s)I H2 (g. 0.100 bar)I H+ (aq, pH= 2.54)IICl^- ( aq, 0.200 MI Hg2Cl2(S)IHg (l)IPt(s) a. write a reduction reaction and nernst equation for each half- cell. For the Hg2Cl2 half reaction, E^0 = 0.268 V b. Find E for the net cell reaction

    asked by katya
  45. medical billing and coding

    With which section of CPT codes is the physical status modifier, such as PI for normal, healthy patient, exclusively used? A.Evaluation and Management B.Radiology C.Pathology and Laboratory D.Anesthesia

    asked by Felicia
  46. English

    The following are what you should not do for safety reasons. 1. You must not run in the hallway. 2. You must not throw away trash into the river. 3. You must not fight with your classmates. 4. You must not carry matches to the mountains. 5. You must not

    asked by John
  47. math

    solve for y (x-3)(x^2+3x+9)=4y^2

    asked by kim
  48. 7th grade

    Maria left the starting line at 8:30 a.m. and drove at an average rate of 40 mph. What time did she arrive at check point 1?

    asked by Richard
  49. English

    I have to make a picture of 'Eve of St Agnes' by John Keats. I have to have some quotations in it. For the part of the poem where Poryphoro and Madeleine are together I'm having trouble picking out the best quotations to illustrate it.Please help!

    asked by Anonymous
  50. English

    A: May I bring a radio on a camping trip? B1: No, you must bring it. B2: No, you must bring one. (Which answer is right? Do we have to use 'one' or 'it' as the answer to the question?)

    asked by John
  51. english

    in the crucible ahet is reverend parris not upset about

    asked by billy
  52. English/Literature

    In the novel, "The Picture of Dorian Gray" by Oscar Wilde, there is a character by the name of Lord Henry. On a test on this book, I had the question, "How does Lord Henry speak?" I responded, "Lord Henry speaks using his wit and brilliance. His voice is

    asked by Anonymous
  53. 8th grade history

    arguments in favor of adding a bill of rights to the constitution?

    asked by Taylor
  54. statics

    I have to come up with a statics problems. i have to make up a problem and take photos that includes a frame or machines. Machines, like those tractor machines or amusement ride. For a frame though, is a step stool that folds considered as a frame. The

    asked by jen
  55. Chemistry

    I did a lab in which I added ionic solutions to tap and distilled water and another ionic solution. Distilled water is the control because it does not react to any solutions since it doesn't contain ions. But one of the lab questions I need to answer is:

    asked by Fred
  56. math

    In triangle ABC, angle C is congruent to angle A, line BC=2x-5, line AB=x+5 and line AC=x+10. Find x. The problem didn't have a triangle drawn so i drew it myself. I tried many equations but when i substitute it it didn't work.

    asked by mark
  57. English

    Are these correct? The beginning of the sentences before "the skiers" are they still considered part of the noun phrase, or are they considered a prepositional phrase, or something different? I believe they are part of the noun phrase, but not sure. The

    asked by Megan
  58. project management

    You find a problem in a project. The project has a defined baseline and task progress has been entered for all tasks for the first report period. The ACWP field show the right cost for the work reported, but the BCWP and BCWS fields are zero. what could be

    asked by Matthew
  59. math b

    is there a web site to help with math b i don't understand angles

    asked by nicole
  60. accounting

    4. Suppose a Midwest telephone company and telegraph MTT company bond maturing in one year can be purchased today for $975 assuming that that the bond is held until maturity the investor will receive $1000 principal plus 6 percent interest that is 0.06x $

    asked by sikander
  61. health care

    how would you ensure the mentally ill are placed in appropriate facility?

    asked by lost
  62. physics help pleaseee

    In the figure below, S is a small loudspeaker driven by an audio oscillator with a frequency that is varied from 1000 Hz to 2000 Hz, and D is a cylindrical pipe with two open ends and a length of 55.0 cm. The speed of sound in the air-filled pipe is 344

    asked by kelsey
  63. chem

    how do i calculate the concentration of F ions using pH in ppm

    asked by erica
  64. Chemistry

    1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is w = -101.325 J. I am unsure how to get

    asked by Derek
  65. 7th grade

    what acids and alkalis are in the kitchen?

    asked by lucy
  66. math b

    how to find if line rp is tangent to circle 0 at p, and the circle bisects 0r at point m. if tangent segment rp has a length of a radius of circle o how do i find the radcal form and the nearsest hundreth

    asked by jeannine
  67. biology

    !@#$%^& ON PLEASE SOME 1 TELL ME DA BIG IDEA OF ENERGY

    asked by tash
  68. 10th grade

    I really need help! I need to know how a Table with polyatomic listed looks like. And Rules for naming Covalent Compounds (mono, di, tri,..) and How to find Lewis structure using the periodic table

    asked by Melissa
  69. English

    1. He kept crying all day long. 2. He kept on crying all day long. (Is 'crying' a gerund or a present participle? What is the part of speech of 'on'?))

    asked by John
  70. SCIENCE!!!

    Do plant cells have cell walls?!?

    asked by Ella
  71. trig

    write down the value (corect to three decimal places of:- a) sin64= b) tan21= c) cos67.4=

    asked by jonny
  72. 10GRADE HONOR WLD-HISTORY/ENGLISH

    How did the political and social ideas of the five philosophers John Locke, Thomas Hobbes, Voltaire, Baron de Montesquieu, and Denis Diderot, impact social equality, democracy, human rights, constitutionalism, and nationalism?

    asked by Terrence
  73. science

    ________________, the way that most plants and animals reproduce typically requires two parents. _______________ requires only one parent. I'm stuck, can you help me to figure out these two questions. Thanks in advance.

    asked by NT
  74. english 6th

    Please check for errors...THANKS Plural possessives Some careers were once mens' jobs. Any job can also be a woman's work. A firefighter's job is very dangerous. Tugboat pilot's training takes seven years. Dolores's dream is to be an astronaut. Everyone

    asked by pam
  75. poetry

    I have to make a picture of 'Eve of St Agnes' by John Keats. I have to have some quotations in it. For the part of the poem where Poryphoro and Madeleine are together I'm having trouble picking out the best quotations to illustrate it.Please help!

    asked by Anonymous
  76. Social Studies

    What are some examples of past governments in Egypt?

    asked by Debbie
  77. French

    If I wanted to say, "a French artist", would it be "un artist français" or "un français artist"? I'm pretty sure the correct form is "un artist français", but I just want to check. Thanks in advance.

    asked by Anonymous
  78. Stat

    In statistic regressions, does "standard error" mean the residual (vertical distance of each point from the regression line)?

    asked by Guy
  79. educational technology

    Can you help me differentiate Traditional Instruction and IT-Integrated Instruction? Please help...

    asked by klarmaesen
  80. math

    2/3x+1/6x=2 and -2x-4

    asked by tina
  81. Statistics

    So log(2) = 0.3010 how do you find 2 if you know log of something is .3010?

    asked by susie
  82. science

    Fill in the blanks.1.wHEN A CRYSTAL OF PERMAGANATE IS GENTLY PIACED IN WATER IT DIFFUSES------(FAST/SLOWLY))

    asked by ra ny
  83. Urgent Chemistry!!

    1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is w = -101.325 J. I am unsure how to get

    asked by Derek
  84. 2nd grade

    Carly looked at a map of her neighborhood and saw that the streets form 16 intersections. Some streets on the map were represented by horizontal lines, and some streets were vertical lines. How many streets could there be in Carly's neighborhood?

    asked by Chris
  85. math

    solve for y (y^2-2y+1)-x=0

    asked by kim
  86. Precipitates

    If i used NaCl to try to precipitate Ag+ from a solution, will it be as effective as HCl?

    asked by Chemistry
  87. English

    Can some one tell me if my examples are correct or if I need to do them over? Adjectival prepositional phrase: I like playing basketball at the gym every other weekend. Post noun modifier: I like the sun when it is bright and hot in July. Participial

    asked by Bethany
  88. english

    What are examples of accolade

    asked by asdfghjk;
  89. college

    who was a famous politician in Denton County, Tx

    asked by Anonymous
  90. english/trasitions

    is moving on a trasition?

    asked by STACY!(:
  91. social studies

    I need help on finding information on the Patriot (American Revolution)about reports on battles won and reports on battle lost.

    asked by cj
  92. algebra 2

    The width of a rectangle is 3ft less than the length, the area is 4ft^2 find the length and width

    asked by Fred
  93. social studies

    how did the citystate have an impact on mesopotamia?

    asked by johnathan
  94. French

    To say that a person lead a movement, would I use the verb "mener à or "conduire à" for "to lead"? Or doesn't it matter?

    asked by Anonymous
  95. biology

    Can anyone tell me what a frog intestine nucleus should look like, and what a frog intestine cell membrane should look like? If anyone has a picture to show, that would be really helpful. Thanks in advance!

    asked by sammy
  96. english

    We can die by it, if not live by love, And if unfit for tomb or hearse Our legend be, it will be fit for verse ; And if no piece of chronicle we prove, We'll build in sonnets pretty rooms ; As well a well-wrought urn becomes The greatest ashes, as

    asked by billie
  97. physics

    A 5 kg box is pushed against a K= 40 n/m spring on a horizontal surface and the spring is compressed 0.12m. The box is released and travels for 1.4 meters before comin to a stop. What is the coefficent of friction between the floor and the box. How fast

    asked by jeff
  98. math

    The function M(x)=-0.287x^3+8.8^2-59.843x+220.7 describes the incidence of measels (per 100,000) for the period 1940-1960 (x=0 for 1940). In what year was the greatest incidence of measels reported? According to the definition of M (x), what is the y

    asked by Danielle
  99. homework

    Multiple Choice 1. If a state law conflicts with a federal law, which provision will likely be at issue? a. Article I b. The Supremacy Clause c. 14th Amendment’s Due Process Clause d. 5th Amendment’s Due Process Clause 2. Concerning Congress’ ability

    asked by John
  100. 6th grade

    if i have 152 dollars with a discount of 20 percent whant would the total be?

    asked by jojo
  101. Human Geography

    What is cultural landscape analysis?

    asked by Farah
  102. math

    what are like terms and why are they used because i need to write a page of notes and i am only give a few sentences?

    asked by Sally
  103. history

    I am doing a project on a battle. I want to say it was a 'bloody' battle. Can you help with another word as my teacher will not like this?

    asked by leanne
  104. college algebra

    please help with these 2 problems a) 2/3x+1/6x=2 b) -2x-4

    asked by tina
  105. 6th grade art

    What was the Philosophies of Picasso.

    asked by Emma
  106. college

    What is the ICD-9-CM code for a routine infant health check?

    asked by Heather
  107. HELP!!!!!!!

    Is there anyone, there to answer Question.

    asked by pj
  108. AED

    I have my ppt presentation started but i need help finding more info. Due • Design a social studies learning packet for a virtual field trip for upper elementary or middle school students. • Create a four- to six-slide Microsoft® PowerPoint®

    asked by troyer0269
  109. Economics

    Does the infusion of capital into an industry raise the productivety of the other inputs in that industry?

    asked by LM
  110. english

    what does the word daff remind you off?

    asked by laura
  111. science!!!

    Is a prokaryotic cell a plant cell?!?

    asked by Ella
  112. social studies

    Why did the Articles of Confederation establish such a weak goverment

    asked by kris
  113. AED

    How can you teach delicate subjects without crossing the line? the subject are controverial and non controversial

    asked by troyer0269