Questions Asked on
July 13, 2009

  1. chemistry- some help plzz totally lost on this one

    Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.70. You have in front of you * 100 mL of 7.00×10−2 M HCl * 100 mL of 5.00×10−2 M NaOH, and * plenty of distilled water. You start to add HCl to a beaker of

    asked by DrFunk
  2. math

    juana threw five darts at a dartboard. the possible scores on a target were 2,4,6,8 and 10. each dart hit the target. which of these total score can be identified as "not possible": 38,23,58,30,42,31,26,6,14, or 15?

    asked by jeury
  3. chemistry help!!

    A beaker with 195 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.20 mL of a 0.260 it M HCl solution to the beaker. How much will the pH

    asked by DrFunk
  4. Physics 20

    A 2.50-kg Pendulum is attatched to a string 11.4m stringis pulled aside until it is.386m above its lowest position and released. The pendulum is designed to emit sound waves at a frequency of 440 Hz; However, as it swings toward and away from an observer,

    asked by Moe
  5. MATH

    Admission to a museum is $10 for each adult and $5 for each child. If a group oh 30 people pays a total of $175 in admission how many adults are in the group?

    asked by christina
  6. English

    What is the final lesson in "The Lost Horse" ?

    asked by Tatianna
  7. Math

    Stephanie can clean a pool in 1 hour , and Mark can clean the same pool in 1.5 hours. If the rate at which they work together is the sum of their rates working separately, how many minutes should they need to clean the pool if they work together? (1 hr=60

    asked by Jay
  8. algebra

    perform operatiion -2a²/ * 2a+2/ 3a² 15a³

    asked by Sandra

    (1) A beaker with 165 mL of an acetic acid buffer with a pH of 5.00 is sitting on a bench top. The total molarity of the acid and conjugate base in the buffer is 0.100M. A student adds 7.20mL of a 0.320M HCl solution to the beaker. How much will the pH

    asked by Ashley
  10. English Comp.

    Please check for errors. If there are any, please state them at the end of my essay. Please help me out because it is do at 3 today. Neat vs. Sloppy Many people will consider themselves a very neat person, but are they really neat or sloppy? Often, people

    asked by betty
  11. English

    Can Someone comment on how well i did my my poem please. Drive No where to go Nothing to see, I just want to drive, Drive away, you and me. We don’t have to go fast we can go slow there is no first or last, as long as you go. My future with you I have

    asked by Anonymous
  12. Math

    A worker tearing down a barn uses a crowbar 4feet long with the shorter end being 2 inches from the fulcrum. If the worker can exert a force of 150lbs at one end of the crowbar, how great a force can be exerted at the other end? (Note the differences in

    asked by Al
  13. Economics

    I am having problems figuring out how to set this problem up. Gamma Corporation, one of the firms that retains you as a financial analyst, is considering buying out Beta Corporation, a small manufacturing firm that is now barely operating at a profit. You

    asked by TrickyEcon
  14. English

    1. The balls under the desk are some. 2. There are some balls on the desk. (#2 is correct, right? What about #1? Is it OK?)

    asked by John
  15. phyilosophy

    happiness where spiritual traditions are in conflict with science and contemporary life.

    asked by Donna
  16. MATH

    chris buys a chocolate bar and a pack of gum for 1.75 if the chocolate bar costs .25 more than the pack of gum how much does the pack of gum costs?

    asked by christina
  17. Grammar

    Are these sentence's punctuated correctly? The new heart clinic is located at 555 NW First Street, Seattle Washington 98104. Transcription should be interesting, educational, always challenging, and, most of all, fun. Additionally, anesthesia was given by

    asked by shelby
  18. Environmental Management

    A. The 95% confidence interval is: (a) Larger than the 99% confidence interval (b) Smaller than the 99% confidence interval (c) The same as the 99% confidence interval

    asked by Jox
  19. English- Man for all Seasons

    Heyy! well my question is in regards to man for all seasons a play by robert bolt. we are asked to identify a living person that resembles the "common man" character. the common man resembles the masses, he has a passive attitude of the world, and refuses

    asked by Me
  20. math

    How much interest is earned from a $3,000 investment at an annual rate of 4% compounded quarterly for 2 years?

    asked by Anonymous
  21. ARt

    Different colors can give different feelings. Would you let me know good websites about that?

    asked by John
  22. billing and coding

    explain how evaluation and management codes are grouped

    asked by angela
  23. algebra

    Build each rational expression into an equivalent rational expression with the indicated denominator (-7yt)/(3x) =(?)/(18xyt)

    asked by Sandra
  24. algebra

    Perform the indicated operation (-2a²)/(3a²) X (20a)/(15a³)

    asked by Sandra
  25. algebra

    Find the LCD for the given rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator. 4/x-y , 5/2y-2x

    asked by Joe
  26. chemistry

    What is the pH of the solution created by combining 0.80 mL of the 0.10 M NaOH(aq)with 8.00 mL of the 0.10 M HC2H3O2(aq)?

    asked by Anonymous
  27. algebra

    Simplify each complex fraction. Reduce each answer to lowest terms. ab+b^2/4ab^ 5 _______________ a+b/6a^2b^2

    asked by Sandra
  28. economics

    distinguish between the individual supply curve and the market supply curve

    asked by AJ
  29. history

    How did the U.S. economy change after WWII ended compared to what it had been like during the war? Use specific examples of what people were able to have and to do, and what it must have felt like after the scarcity of their wartime experience.

    asked by scooby9132002
  30. medical billing and coding

    discuss coding for obstetrics, including items covered by the golbal fee for anterpartum and postpartum periods of normal pregnancy

    asked by angela
  31. Grammar

    Are these sentence's correctly punctuated? The motor vehicle accident, however, was not the patient's fault. Dr. Jones is an excellent surgeon, but does not have a good bedside manner. She was tried on various antibiotics, and an infectious disease

    asked by shelby
  32. Grammar

    Are these sentence's punctuated correctly? Differential diagnoses include: Diabetes, adult-onset Cholelithiasis, acute Endocarditis, subacute This year she'll have a breast augmentation, and next year she will have an abdominoplasty. It should snow in the

    asked by shelby
  33. algebra

    Perform operation 3/ * 2a+2/ a²+a 6

    asked by Sandra
  34. algebra

    Worker efficiency. In a study of worker efficiency at Wong Laboratories it was found that the number of components assembled per hour by the average worker t hours after starting work could be modeled by the formula N(t)=-3t+23t^2+8t

    asked by Sandra
  35. Business Law

    While Mr And Mrs Lowell was on a cruiseship vactioning their cabin was broken into and valueables were stolen they were looked in the bathroom while this was happening Mr Lowell sufferd a heart at?

    asked by Anonymous
  36. algebra

    what is the negative reciprocal of -7/3

    asked by maria
  37. sociology

    The iranian legal system is more focused on protecting the rights of crime victims ( and their relatives) than is the law in the united states. Should our courts move in this direction?

    asked by tiffany
  38. SCI 275

    The Population Size explain the four factors that produce changes in population size. Which factors are affecting the population size in the video? What do you predict will happen to the nutria population ater all the land is depleted of the nutrias' food

    asked by CC
  39. english

    I need to find a good quote from Act 4 in the novel The Crucible that is very important.

    asked by Mary
  40. writing

    In what ways are purpose, audience,tone and content different for interpersonal and business communication

    asked by yolanda
  41. Math

    Lear, Inc., has $800,000 in current assets, $350,000 of which are considered permanent current assets. In addition, the firm has $600,000 invested in fixed assets. a. Lear wishes to finance all fixed assets and half of its permanent current assets with

    asked by janay1978
  42. geometry

    Find the volume of a rectangular solid with the following dimensions: 2.3 cm x 4.6 cm x 7.8 cm

    asked by shannon
  43. Health Care

    is dazzlewhite a good thing to use to whiten your teeth?

    asked by Angelica
  44. math/urgent

    PLEASE tell me how you are supposed to come to the answer to this. and what is the answer: a number x is y more than a number y times x i'm a little confused, and i have to teach this to a student. thanks a lot

    asked by y912f
  45. algebra

    Reduce to simplest terms,rational expression -2x-8 ______ x^2+2x-8

    asked by Sandra
  46. science

    Which one of the following is a source of chemical weathering? A. The abrasion of running water B. Water freezing in the cracks of exposed rocks C. The effects of acid from decaying animals D. The growth of mosses in the cracks of rocks i think its b or c

    asked by me
  47. Communication Theory

    An objective theory is good in the eyes of an interpretive researcher if the explanation of communication behavior leads to further understanding of _________?

    asked by Crystal
  48. Essay writing

    what makes an authors argument compeling

    asked by Cynthia
  49. AP Economics

    Describe why every decision involves trade-off. Can you please explain it to me.I don't get it!!!

    asked by Anonymous
  50. MATH

    Three integers have a sum of 7 and a product of 0. If the difference of the greatest number and the least number is 11, then the least of these numbers is?

    asked by christina
  51. economics

    explain how the principle of diminishing marginal utility is related to the downward sloping demand curve?

    asked by AJ
  52. science

    What occurs in wind erosion? A. Wet soil is transported away. B. Dry soil is transported away. C. Small rocks are left behind. D. Large rocks are left behind. is it b or d

    asked by me
  53. algebra

    correction to previous problem should read: (w^2-1)/(w-1) x (w-1)/(w^2+2w+1)

    asked by Joe
  54. algebra

    Perform the indicated operation (w^2-1)/(w-1) x (w^2+2w+1)

    asked by Joe
  55. algebra

    Solve each equation. Watch for extraneous solutions 5/y-3 = y+7/2y-6 +1

    asked by Joe
  56. math

    Estimate the drop in the Dow Jones Industrial Average if it falls 5% from its value of 10,637

    asked by Anonymous
  57. sociology

    if united states support capital punishment would be willing t abandon it if convicted murderers could be sentenced to life imprisonment with absolutely no chance of parole? similarly if united states oppose the death penalty would they change their

    asked by pam
  58. Algebra

    Please Solve: (x+3)(x-5)< 0

    asked by Carmin
  59. Chemistry

    What is the molecular formula of water?

    asked by Nimmy
  60. Accounting-business

    Your uncle offers you a choice of $30,000 in 50 years or $95 today. If money is discounted at 12 percent, which should you choose? Can anyone tell me if this is right and if not what am I doing wrong. 30,000 x 0.003 = $90 Option 2: PV = $95

    asked by Tammy
  61. tenison

    square root for 8

    asked by matin
  62. Communication Theory

    Aristotle divided persuasion into three kinds of strategies called________.? These three where ___ ___ ____???

    asked by Alyssa
  63. Communication Studies

    An objective theory is good in the eyes of an interpretive researcher if the explanation of communication behavior leads to further understanding of ________________. ?

    asked by Audrey
  64. medical billing

    Differentiate between the official coding guidelines for using V codes in an inpatient and outpatient setting.

    asked by angela
  65. billing and coding

    Explain the importance of a fee schedule and the factors it's based on.

    asked by angela
  66. Grammar

    Are these sentence's punctuated correctly? Depression, often a genetic disorder, can be safely treated with medication. Infection, for example, can be a complication of surgery. Having been up late last night, I may not make our lunch date.

    asked by shelby
  67. Health Care

    how do you use baking soda and salt to whiten your teeth. if you can then please do list some directions, thanks

    asked by Angelica
  68. economics

    describe the difference between the income effect and the substitution effect

    asked by AJ
  69. Man for All Seasons

    Hi!!! Does anyone know a modern example of the common man. HE has to be ALIVE!!! Thanks

    asked by Me
  70. english

    please help me analyze the tone of Another Writer's Beginnings by Sasaki. is it honest or sentimental? provide reasons.

    asked by bindiya farswani
  71. Algebra II

    Factor Completely: x^2-2x-99

    asked by Cecilia
  72. math

    1 yard is how many feet

    asked by tracy
  73. light

    I know that when a light ray refracts towards the normal, it means that it's perpendicular. But what is it refracting towards the normal with respect to?

    asked by Anonymous
  74. global

    What is carthage?

    asked by Anonymous
  75. algebra

    Solve the equation -3/x = x/-3

    asked by Maria
  76. sociology

    what are the advantages and disadvantages of explicitly grounding a legal system in a particular religious tradition? Should the united states attempt t integrate christianity into its criminal justice system, as some conservatives recommend?

    asked by tiffany
  77. Algebra

    solve the equation x/3 = 4/x+1

    asked by Maria
  78. algebra

    Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. a^2-b^2/a-b

    asked by Sandra
  79. algebra

    Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. 4x^2/2x^9

    asked by Sandra
  80. Math

    Solve: (3-2) - (2-3)

    asked by Jack
  81. math

    Solve : 9x^2 over 144 - 4 over 25

    asked by Mike
  82. chemistry

    your experiment yielded 50kg of NaCl (D= 4.5g/ml. What volume of your yield is this in liters?

    asked by anthony
  83. sociology

    why is the united states is the only remaining postmodern nation that retains the death penalty?

    asked by pam
  84. English

    Does anyone know a site where, I can get a summary for The Magus by John Fowles? I need help in describing 3 settings, inciting moment, 3 conflicts/crises, climax, falling action, 5 themes, and the ending.

    asked by Patel
  85. business

    What strategies can you use to incorporate effective visual elements into business presentations?

    asked by mya