Questions Asked on
May 16, 2008

  1. Electrochemistry

    In lab, we did an experiment with electrochemical cells with solutions of ZnSO4, CuSO4, Al2(SO4)3 and MgSO4 and their respective metal electrodes. There are a couple of post-lab questions that I'm not sure about: (1) Summarize Part A with a data table

    asked by Donna
  2. Electrochemistry

    Qualitively explain the effect of changing concentration of Cu^2+ using your experimental observations and the Keq values below (no calculations required) Cu^2+(aq) + 4 NH3(aq) --> [Cu(NH3)4]^2+(aq) , Keq = 1.2x10^12 CuS(s) --> Cu^2+(aq) + S^2-(aq) , Keq =

    asked by Donna
  3. chemistry- DrBob

    summarize part a ( the data i showed you) in a data table containing heading: anode, cathode, overall cell reaction, and cell potential . for each cell combination, write the anode half reaction, the cathode half reaction, the overall reaction in the cell

    asked by amy

    I am struggling with organizing stoichiometry problems; I know how to solve them after they're set up. Here is an example: "An organic compound with a FW of 417 was analyzed for ethoxyl {CH3-CH2O-} groups with the rxn: ROCH2CH3 + HI --> ROH +CH3CH2I

    asked by MICOLE
  5. Chemistry

    The absorbance values At & A0 recorded in the experiment 'Rate Law Determination of the Crystal Violet Reaction' are used in the place of the concentration values of which species A. CVOH B. CV+ C. –OH D. Na+ E. H2O

    asked by lexi
  6. chem

    based on the balanced eq: c6h12+9O2->6CO2+6H2O calculate the molecules of CO2 formed when 174 molecules of H20 form. im not exactly sure how to start this problem.

    asked by rudy
  7. Literature

    I don't quite get what they mean by senses... Here is their question, it's based on a poem named 'The Village Blacksmith'. You can experience a poem more fully if you use your senses. What sense is the blacksmith using in lines 28 and 29? The lines: 28] He

    asked by Lily
  8. Math

    Using the formula for the surface area of a SPHERE: Use Pi = 3.14 If the diameter of a sphere is 8 feet, find the surface area (round to the nearest square foot) 201 sq ft If a quart of paint covers 75 square feet, how many quarts of paint are needed to

    asked by Mike
  9. politics

    What is the difference between nationalism and federalism? Thanks!

    asked by Lydia
  10. maths(trigonometry)

    prove that sinA-cosA+1/sinA+cosA-1=1/secA-tanA

    asked by meenal
  11. criminal justice

    What are the pros and cons or arguments for and against the just desert punishment theory?

    asked by Anonymous
  12. chemistry

    The absorbance values At & A0 recorded in the experiment 'Rate Law Determination of the Crystal Violet Reaction' are used in the place of the concentration values of which species? A. –OH B. CVOH C. CV+ D. Na+ E. H2O I'm pretty sure this is CV+ right?

    asked by Amy
  13. biology

    why do macrophages have high numbers of ribosomes and lysosomes

    asked by mitch
  14. Economics

    I am getting thrown off by absolute advantage: Boston: Red Socks per worker per hour 3 White Socks per worker per hour 3 Chicago: Red Socks per worker per hour 2 White Socks per worker per hour 1 A) Without trade, what is the price of white socks (in terms

    asked by G
  15. english

    Which of the following illustrates the key difference between subjective and non-subjective issues? A) A non-subjective issue has generally accepted criteria that can be used to judge it while a subjective issue does not. B) A non-subjective issue is true

    asked by jen
  16. Math

    A piece of metal is bent into a rectangle and has a length which is 5 times as long as its width. If the perimeter of the piece of metal is 13 feet 6 inches, find the length and the width of the piece of sheet metal. You must use a variable , write an

    asked by Jon
  17. Math

    A cylindrical tank has a height of 8 feet and a diameter of 2 3/4 feet. Use pi= 3.14 What is the lateral surface area? What is the lateral surface area ? If a quart of paint covers 100 square feet, how many quarts of paint will be needed to paint the

    asked by Mike
  18. statistics

    A maker has the opportunity to purchase several acres of land that is divided up into several lots for building single-family homes. It is known that the average sale price of all of the lots is $80,000 and the standard deviation of the sale price is

    asked by Ronnie
  19. chemistry- DrBob

    Last week i did a lab and i just wanted to show you my results because my computer was acting weird when i used the voltage probe.(I just needed you to check that the cathode and anodes and voltages make sense) CuSO4(cathode)and Al2(SO4)3 (anode)--[0.050V]

    asked by Amy
  20. chemistry

    ) Choose the correct integrated rate law for each reaction order. (Enter only the letter to the left of the correct response.) Reaction Order Answer zero d first c second a a. l/[A]t = kt + l/[A]0 b. log[A]t = kt +log[A]0 c. ln[A]t = –kt + ln[A]0 d. [A]t

    asked by Amy
  21. chemistry

    The rate constant, k, for each reaction order is equal to _____ from the linear plot. zero ---d first----d second-----a a. slope (m) b. y-intercept c. x-intercept d. negative of the slope (-m) e. 0

    asked by Amy
  22. Marketing

    what are the decision facing oracle

    asked by China
  23. Math

    Are these correct 2a) For the cone, find the Lateral Surface Area in square inches. (Hint: Use the pythagorean theorem to find the slant height) diameter= 12 inches, height= 8 inches Lateral Surface Area= 301.5928 square inches 2b) Find the volume in cubic

    asked by Mike
  24. french

    Les pronoms d'objet direct. J'ai fait mes devoirs. Is this correct? Je les ai faits. with "s" after fait?

    asked by french
  25. Math

    Are these correct: 1a) Find the lateral surface area in square inches of the cone with the following dimensions: h= 24 in, radius = 10 in, slant height = 26 in. (Use Pi= 3.14) I didn't know how to do: Lateral Surface Area = ______ square inches (exact

    asked by Mike
  26. Science

    Environomentalist as the five basic cause of eniveronmental problems that we face have indentified the following. I) Rapid population growth II) Unsustainable resource use III) Poverty IV) Not including the environmental cost of economic goods and services

    asked by Bradley
  27. English Expression

    There are three sentences in the speech bubble on the left. There are three sentences in the speech balloon on the left. There are three sentences in the balloon on the left. There are three sentences in the bubble on the left. ----------------------- Are

    asked by John
  28. Biology

    In general, organisms that obtain their energy from sunlight are called ________. Is is photosynthetic? If not, what would the answer be? Thanx!

    asked by Nicky
  29. Math

    I need help with these probability problems. 1). Five chips are selected from a bag without replacement. The bag originally contained 6 yellow chips and 8 red chips. In how many ways can you choose 5 chips from the bag? I did 14 C 5 and got 2002, is that

    asked by Kelsey
  30. IGCSE help !!

    Hello My IGCSE English language exam is after 2 hours. May a grateful person in this website , help me with my Summary. By means , some advice on writing summaries of given texts. I have an appalling atitude towards writing summaries , due to my long essay

    asked by QA
  31. Basic Design

    Principles of art & design

    asked by adil
  32. chemistry

    what is Hydrogen Bonding?

    asked by shailendra ojha
  33. stiochiometry

    Hello! This is my take home final for my chemistry class and I can use any resources to help me solve the questions. Can someone help me get started on all of them? Thanks… (note: he wants us to solve them using stoichiometry) 1. The resting calorie use

    asked by Roberta
  34. year 7 geography

    Please could someone help me i need to write an essay about airbuses.These are the questions i need to write my essay about. thanks for taking the time to help 1/ how does the airbus uk fit into the airbus factory? 2/ describe how the wings are transported

    asked by ANON
  35. chemistry

    Choose the correct variables that will create a linear plot for each reaction order. Reaction Order / Answer Zero/ a??? First /b??? Second /c??? a. [A] vs time b. ln [A] vs time c. l [A] vs time d. log [A] vs time e. [A] vs (time)^2

    asked by Amy
  36. Criminal Justice

    Can someone send me in the right dirction with this one? Your supervisor has asked you to prepare an article for the next issue of The Siren, your department’s monthly e-zine. He wants you to focus on police use of force and when it is appropriate.

    asked by ask
  37. human resources

    a chemist has 400 mililiters (mL) of solution that is 21% acid. How many mililiers of acid are in the solution

    asked by carebear
  38. math

    an appliance dealer marks up refrigerators 20% (based on cost). If the cost of one model is $1,100, what should its selling price be

    asked by carebear
  39. science

    does anyone know any science revision games about mr mcluthon i need to use it for my revision but can`t find them . thanks

    asked by ANON

    i forgot to mention i need some photos of the airbus factory in Broughton Chester. i can`t seem to find any. thankyou

    asked by ANON
  41. com130

    production of widgets your company produces. Your clients are both local and international. They have diverse backgrounds, technical experience, and understanding. 1. Choose and utilize a prewriting technique to gather your thoughts. 2. Create a draft of

    asked by misty
  42. ecology

    What would happen if the population of a species in an area doubled?

    asked by joe
  43. Psychology

    Whay has Rational Emotive Therapy been renamed Rational Emotive Behavior Therapy?

    asked by Ashlynn
  44. bones

    complete the following term using the definition.. Definition is : suture of a tendon Complete this term:teno_________

    asked by kelly
  45. Science

    Is the wealth gap good or bad for (a) you, (b) a poor person, and the environment? Assuming that you believe that the wealth gap is bad, what three things should be done to narrow this gap? What obligation should a wealthy person, corporation, or a country

    asked by Bradley
  46. Literature

    Hi, I just have a question about a confusing question to me in a poem that I have to answer... The poem is Annabel Lee. Here's the question they are asking: What was the effect of the repeated rhymes? I can't find an answer to the question?

    asked by Lily
  47. physics

    what is the initial velocity of this equation. .92m= 3.10 times .43 + 1/2 times 9.8 m/s times .43 squared

    asked by lisa
  48. Science

    I am working on a year 10 physics assignment on road science. I am trying to figure out the reaction distance of a car with: Skid marks = 24m Reaction time = 1 sec Decelaration rate = 6m/sec I have many formulas in my book and am unsure of which one to use

    asked by Melody
  49. financial resources

    Bob Brown was recently involved in a minor auto accident. His car was hit from behind, and he, in turn, slammed into the car in front of him. He would like someone to explain his coverage and show him where, in his auto policy, each of his losses might be

    asked by Anonymous
  50. com130

    Imagine you have been asked to communicate to several clients regarding a delay in the production of widgets your company produces. Your clients are both local and international. They have diverse backgrounds, technical experience, and understanding.

    asked by misty
  51. Math Rates/proportions

    I have two questions that are based on the following chart: Activity Cal/h Bicycling 6mi/h 240 Bicycling 12 mi/h 410 Cross country sking 700 Jogging 5 1/2 mi/h 740 Jumping rope 650 Running 10 mi/h 1,280 Swimming 25 yd/min 275 Swimming 50 yd/min 500 Tennis

    asked by Mary Mac
  52. ecology

    If different animals were all the same size and ate the same food what would happen?

    asked by joe
  53. ecology

    What are the determining characteristics that are used to classify birds?

    asked by joe
  54. ecology

    Why is extinction an important ecological topic?

    asked by joe
  55. trig

    Quadrant I tan terminal= 2 what is csc terminal

    asked by Nate
  56. Math

    5) A frustrum of a cone has the following dimensions: height = 6 in, lower radius = 8 in, upper radius = 4 inches.( Use pi= 3.14) find each of the following: 5a) Lateral Surface area = _____ square inches 5b) Total Surface area= ______ square inches 5c)

    asked by Mike

    does anyone know any good sites about the spanish armada that explains it simply. i need to write an essay about why it failed and the reasons. thankyou for your help!

    asked by ANON
  58. uop

    Benjamin O'Henry has owned and operated O'Henry's Data Services since its beginning ten years ago. From all appearances, the business has prospered. In the past few years, you have become friends with O'Henry and his wife. Recently, O'Henry mentioned that

    asked by kristie
  59. English Expression

    She trusts in me. She trusts me. She believes in me. She believes me. ----------------------- What is the diference between them? Does 'truse in' mean 'believe in'?

    asked by John
  60. Math

    x^8 / x ^4 = x^2 is this right -12x^4/3x = -4x^3 is this correct

    asked by Mike
  61. it

    Can someone please help me with this. I need some understanding on how to 4] Use IPO for analysis [4] Use Pseudo Code to show your design solution. I am not sure how to do this or how or what to do. Please help me better understand this. Please

    asked by Anonymous
  62. civics

    how many days per year are students required to attend school in Minnesota? and how many hours per day are students required to in in school?

    asked by jenny
  63. Business

    There are a number of key values that influence how an individual constructs a particular issue. What are they? Give an example from your own experience for each value you mention.

    asked by aida
  64. Algebra

    Can someone please tell me how to solve this problem? Trying to help a teen who is staying with me with their homework, but I am clueless. Thanks.

    asked by Pam
  65. trig

    find the exact value for each function tan pi/3 cos pi/4

    asked by Nate
  66. Math

    How do I evaluate z^log k?

    asked by Lucien
  67. Math

    Are these correct: 3) Find the capacity in gallons of a drum that is cone-shaped if the radius is 9 feet, and the slant height is 41 feet. (first find the volume) Volume in cubic feet = 3477.74306 cubic feet Capacity in gallons = 26013 gallons (Round

    asked by Mike
  68. nebinger

    Tom earns 5$ more than marge. how much does she earn per hour?

    asked by keyasia
  69. English

    Why is there so much Shakespeare incorporated into "Brave New World"? What does Shakespeare represent in "Brave New World"?

    asked by Christian
  70. English Expression

    When we answer the praise or the favorable word of the other person, we can use this expression, "I'm glad you like it." When we express an opinion that an item is great, we can use this expression, "To me, this is the best watch in the world!" We can use

    asked by John
  71. English Expression

    When is Memorial Day? It is Jun 6th. (in our country) It is on June 6th. Do I have to use 'on' or not? Are both OK? Then, which one is common?

    asked by John
  72. English Expression

    1. Tim likes fish, but Susan doesn't like it. 2. Tim likes fish, but Susan doesn't like them. Which pronoun do I have to use? I think 'fish' is used as a plural noun?

    asked by John
  73. photoshop

    Does anyone know of a place where I can learn manipulations? I already know how to, but I want to improve my skills :) Let me know.

    asked by Lily
  74. science

    if you shine a green light on a plant where does the other light go?

    asked by samina
  75. Math

    If the ratio of two pulleys, A and B is 4:3, and pulley B has a length of 13.5 inches, how long is pulley A? [a] inches how do i figure this

    asked by LT
  76. Math

    4 1 /2 percent of 5600 is

    asked by Mike
  77. Marketing

    how does mead johnson use segmentation on it's website

    asked by China