Questions Asked on
August 10, 2009

  1. GChem

    1. 25mL of 0.1M HCl is titrated with 0.1M NaOH. What is the pH when 30mL of NaOH have been added? 2. 25mL of 0.1M HCl is titrated with 0.1M NaOH. What is the pH after 15mL of NaOH have been added? I don't know how to make calculation I assumed that for

    asked by Mike
  2. AP Physics

    In order to pass a physical education class at a university, a student must run 1.0 mi in 12 min. After running for 10 min, she still has 500 yd to go. If her maximum acceleration is 0.15 m/s2, can she make it? If the answer is no, determine what

    asked by nicky
  3. ''To Kill a Mockingbird" by Harper Lee?

    Jem and Scout's respect for their father is greatly increased when he: a. Collects a large fee from a client. b. Argues with Mrs. Dubose. c. Shoots a mad dog. d. Stops a burglar. Atticus receives payment from Mr. Cunningham as: a. Hickory nuts and stove

    asked by Ernest
  4. chem

    Equal volume of a 0.02 M Zn+ solution and a 2.0M NH3 solution are mixed. Kf for [Zn(NH3)4] is 4.1*10^8. If enough sodium oxalate is added to make the solution 0.1 M in oxalate, will ZnC2O4 precipitate. Ksp ZnC2O4= 2.7*10^-8. I set up an ICE table which

    asked by Sara
  5. math

    divide 100 loaves of bread amoung 5 men so that the amounts are in arithmetic progression ( increase by the same amount each time) and the sum of the three largest shares is seven times the sum of the two smallest.

    asked by jake
  6. math-

    A new model of car is available in 4 exterior colors and 3 interior colors. Use a tree diagram and specific colors to show how many color schemes are possible for the car. Solve the problem using an alternative method as well.Note that you are asked to

    asked by Mike
  7. Chem

    For the reaction I2(s)+Cl2(g) ==> 2ICl(g) delta H= 36kJ, delta S= 158.8J/K at 25° C. Calculate the temperature at which Keq is 4.0*10^3. delta G= (delta H)- T(delta S) = 36 - (298)(0.1588) = -11.32 delta G= -RTlnK -11.32= -8.31Tln(4*10^3) -11.32= -6892.35

    asked by ---
  8. Physics

    An average family of four uses roughly 1200 liters (300 gallons) of water per day. (One liter = 1000 cm^3.) How much depth would a lake lose per year if it uniformly covered an area of 50 square kilometers and supplied a local town with a population of

    asked by Zack
  9. Physics

    GPS can be used to determine positions with great accuracy. The system works by determining the distance between the observer and each of the several satellites orbiting Earth. If one of the satellites is at a distance of 20,000 km from you, what percent

    asked by Zack
  10. word problem Math

    A pollster interviewed 500 university seniors who owned credit cards. She reported that 240 had Goldcard, 290 had Supercard, and 270 had Thriftcard. Of those seniors, the report said that: 80 owned only a Goldcard and a Supercard, 70 owned only a Goldcard

    asked by Kendra
  11. physics i got link

    h t t p : / / i m g 4 . i m a g e s h a c k . u s / i m g 4 / 9 2 9 0 / p i c t u r e d q e . j p g

    asked by Physics i got link
  12. Chemistry

    If 25mL of 2.00M NAOH is added tpo 50mL of 0.10M HC2H3O2 (Ka=1.8*10^-5), what is the pH? moles HC2H3O2= c*v = .1 * .05L = .005 moles NaOH= c*v = .2 * .025L = .005 pH= Pka + log (B/A) = 4.75 + log (.005/.005) = 4.75 I'm not sure how to calculate the moles I

    asked by Sara
  13. Chemistry

    1) How many drops of 12M HCl would you add to 1.00 L of 0.100 M HC2H3O2 to make [C2H3O2-] = 1.0 x 10^-4 M? Assume that 1 drop = 0.050 mL and that the volume of the solution remains 1.00 L after the 12 M HCl is diluted. [Hint: What must be the [H3O+] in the

    asked by Chem
  14. AP Physics

    A glider on an air track carries a flag of length through a stationary photogate that measures the time interval td during which the flag blocks a beam of infrared light passing across the gate. The ratio vd = / td is the average velocity of the glider

    asked by nicky
  15. chem

    The solubility product of silver sulfate is 1.6* 10^-5. What is the molar solubility of this compound? Ksp= [Ag]^2[So4^2-] 1.6*10^-5 = x^3 x= .0252 but the answer in my book is (16/4)^1/3 *10^-2 which equals to 0.158

    asked by Sara
  16. physics (geography bit)

    Thanks for the help guys!!! I really appreciate it!!! ok I drew the thing as caerfully as I good h t t p : / / i m g 3 7 . i m a g e s h a c k . u s / i m g 3 7 / 7 8 0 7 / f i r s t d w s . j p g ok I redrew it chekc it Ok I followed the directions and

    asked by physics (geography bit)
  17. Chemistry

    The PH of an aqueous solution of NaCN is 10.38. What is [CN-] in this solution?

    asked by ChemHurts
  18. algebra

    The denominator of a fraction is 12 more than the numerator. If 16 is added to the numerator and 16 is subtracted from the denominator, the value of the resulting fraction is equal to 2/1. Find the original fraction

    asked by Sarah
  19. HCA 210 Introduction to Health Care

    What is the definition of mental illness? Can mental illness be as clearly defined as a physical illness such as diabetes? Can mental illness be cured? o Has the concept of deinstitutionalization been effective in providing needed services to the mentally

    asked by Nicole
  20. Math

    Sonja is paid $42.50 per hour as a veterinarian. She is paid 1 1/2 times the regular rate for all time exceeding 7 1/2 hours in a day or 37 1/2 hours per week. Work on a statutory holiday is paid at double time. What were her gross earning for a week in

    asked by Tha
  21. math

    how do you solve this problem: 147.5% as a decimal

    asked by patricia
  22. MaTH

    Danielle bought a gift for a friend that originally cost $32. She used a coupon to get $5 off. what percent did she save? I tried working 32-5=27, 32divided by 27 = 1.185 ???

    asked by DEBBIE
  23. physics (geometry bit)

    h t t p : / / i m g 4 3 . i m a g e s h a c k . u s / i m g 4 3 / 4 7 4 1 / 9 4 7 4 7 1 1 6 . j p g ok the two read angles are equal to each other because they are complementary if i remeber correctly the only thing we can conclude is that when we add the

    asked by physics (geometry bit)
  24. Critical Thinking

    Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion

    asked by Sablan
  25. Heath Care Introduction

    # What is the definition of mental illness? Can mental illness be as clearly defined as a physical illness such as diabetes? Can mental illness be cured? # Has the concept of deinstitutionalization been effective in providing needed services to the

    asked by anonymous
  26. Chemistry

    An 0.0284 aqueous solution of lactic acid is found to be 6.7% ionized. Determine Ka for lactic acid. HC3H5O3 + H2O H3O^+ + C3H5O3^- Ka =? Thanks.

    asked by Sev
  27. physcs (Geometry bit)

    how do you prove that an object on a ramp resolved into it's gravity components were the x dreiction is down the ramp and the y direction is the direciton of the normal force Force of gravity x component /\ |Normal force

    asked by physcs (Geometry bit)
  28. economics grad level

    I cannot figure this our for the life of me!Assume that the gross national debt initially is equal to $3 trillion and the federal government then runs a deficit of $300 billion. What is the new level of gross national debt? What happens to the amount of

    asked by queenie
  29. statistics

    A researcher has observed independent samples of females and males, recording how long each person took to complete his or her shopping at a local mall. The respective times, in minutes, are listed in file. Using the 0.025 level of significance in a

    asked by Lina
  30. managerial accounting

    The Joyner Corporation originally budgeted for $360,000 of fixed overhead. Production was budgeted to be 12,000 units. The standard hours for production were 5 hours per unit. The variable overhead rate was $3 per hour. Actual fixed overhead was $360,000

    asked by natasha
  31. Math

    Bosley's Pet Foods buys dog kibbl for $19.50 per bag, less 40%. The store's overhead is 33 1/3% of the selling price, and the desired profit is 10% of the selling price. (a) At what price per bag should the dog food be sold? (b) At this price, what is the

    asked by Tha
  32. Website.need it please!

    Can any one help me to find which website is good for high school student to learn more subjects online with others without paying or any good website for doing home work or school game?. thank you.

    asked by Ochaya
  33. Chemistry

    What molar [] of silver ion could exist in a solution in which the [] of CrO4^2- is 1.0*10^-4 (Ksp of Ag2CrO4= 1.1*10^-12) Ksp= [Ag]^2 [CrO4^2-]

    asked by Anonymous
  34. Physics (Geometry bit)

    ok i got my diagram posted question earlier it wouldn't let me post anymore I'm really sorry guys just trying to get my diagram to work =[ ++++++++++++++++++++++++++++++ ++++++++++++++++++,++++++++++/|\ +++++++++++++++++++++++++++++|

    asked by Physics (Geometry bit)
  35. business

    Your management team has been retained by a senior manager who is concerned about the effectiveness of his managers and their teams. He would like your team to develop a training guide on delegation. The training guide should be designed to improve the

    asked by Anonymous
  36. Physics

    The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earth’s surface, what will the acceleration due to the

    asked by Victor
  37. physics

    i have a question in my book centripetal acceleration = r^-1 v^2 ok I agree but in my book acceelration is labeled as a vector but yet the velocity is not... Why?

    asked by physics
  38. literature - 11th grade

    define "period structure

    asked by josh
  39. biology

    just wondering how the moss, ferns and angiosperms life cycles are similar and different. I really don't understand this reproductive stuff. sim's all three life cycles alternate between haploid and diploid. I don't know much here so i can't fill in much

    asked by Jim_R
  40. gen

    What is the relationship between ethics and critical thinking? Why are ethics a concern in the academic environment? I have no clue so any will do

    asked by troyer0269
  41. com 140

    what is the answer for discussion question 1 and 2

    asked by pinky
  42. Eth

    How well do you think Native American organizations, like the Bureau of Indian Affairs (BIA), the National Congress of American Indians (NCAI), and the National Indian Gaming Association (NIGA), are helping Native Americans to advance?

    asked by Haley
  43. Algebra Word Problem Help

    Two wine merchants enter Paris, one of them with 64 casks of wine, the other with 20. Since they have not enough money to pay the custom duties, the first pays 5 casks of wine and 40 francs, and the second pays 2 casks of wine and receives 40 francs in

    asked by Breanna
  44. business statistics

    Please can you give the formula to do this exercise, Thank you. A sample of 40 investment customers serviced by an account manager are found to have had an average of $23,000 in transactions during the past year, with a standard deviation of $8500. A

    asked by Heidy
  45. math

    86=9 + 32 problem1 - 5 problem 2 2=4-5t

    asked by evan
  46. english

    In the sentence Hiawatha is the hero of an Indian Legend, is hero an adjective describing Hiawatha.

    asked by George
  47. history

    The election of Arnold Schwarzenegger is an example of ?

    asked by Alvin
  48. law and ethics in medicicine

    if dr. jones is practicing defensive medicine what is likely to be his motivation for doing so

    asked by Anonymous
  49. Social Studies

    How has the conflict (war) changed Iraq?

    asked by Madison
  50. MaTH

    a can of soda contains 40 milligrams of sodium. how many cans woild it take to concume a gram of sodium? I tried working, not sure if correct -help 40 X 0.001 = 0.04

    asked by DEBBIE
  51. calculus

    Integrate: (The Sq. Root Of x-2)/x+1 dx Let u= (Sq. Root Of x-2)

    asked by Jessica
  52. math

    Let C = {p, l, u, s}. How many proper subsets does C have?

    asked by Kim
  53. science

    What do you predict will happen to the nutria population after all the land is depleted of the nutrias’ food resource?

    asked by Sarah
  54. english

    where can i find the text of r.m.s titanic online?

    asked by bindiya farswani
  55. gen

    this is my schedule I made up.. What does everyone thing? I do take breaks for other things during these times but not a long break. Days Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sunday 12:00 noon to whenever Monday 7:00 pm to 10:00 Tuesday

    asked by troyer0269
  56. science

    What are the challenges of managing your chosen terrestrial resource issue? What human activities contribute to the problem?

    asked by Bebe
  57. English - A lesson before dying

    I have a question for school over Ernest Gaines's A Lesson Before Dying that I can't answer because I don't remember it and don't have the book anymore (I borrowed it from the library and already returned it). What does Jefferson mean when he says, “I

    asked by Bobby
  58. history

    in what ways does Magna Carta still impact laws

    asked by tasha
  59. Chem

    For the reaction I_2(s)+Cl_2(g) ==> 2ICl(g) ÄH= 36kJ, ÄS= 158.8J/K at 25° C. Calculate the temperature at which Keq is 4.0*10^3. ÄG= ÄH- TÄS = 36 - (298)(0.1588) = -11.32 ÄG= -RTlnK -11.32= -8.31Tln(4*10^3) -11.32= -6892.35 T T= .00164 correct

    asked by -
  60. Physics

    The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earth’s surface, what will the acceleration due to the

    asked by Sammy
  61. math

    I don't understand what I have to look for. Examine several newspapers and magazines and describe at least three examples of functions that appear. What is the domain and range of each function?

    asked by tricica
  62. english

    Does theses sentences sound right with a semicolon in. Jerry loves golf; he plays it every day. When she is worried; Lucille eats a lot.

    asked by cindy
  63. english writing

    Does this sentence sound alright with a correct apostrophe used in it. It's up to you to decide what to do.

    asked by betty
  64. english writing

    Is this a could sentence with good punctuation in use of it. Behind my house is a tall, blue spruce tree.

    asked by betty
  65. english

    I need to abbreviate in a sentence so does this look good. Martha is a member of Parents for Responsible Teens (PRT).

    asked by cindy
  66. civics

    the senate power of advice and consent does not apply to the federal judges true or fales . and what's the right answer. is it true

    asked by roc
  67. Algebra

    Complete the square to obtain exact solutions: x^2+6x+13 = 0 2x^2-5x-3 = 0

    asked by Alicia
  68. Math

    How many angles in a triangle?

    asked by Eric
  69. sociology

    What role does the public play in determining the practice rights of midwives, and how does this role impact the AMA's position on the subject?

    asked by steve
  70. Design

    How does the use of jewellery affects people in the society? (both negative and positive affects) How it affects how people look, feel or act?

    asked by Emerald
  71. social studies

    How did the search for a viable labor force affect the development of the southern colonies? What was the role of African-American slavery in the early colonial settlements? Why were two southern colonies initially resistant to slavery?

    asked by Anonymous
  72. Science

    What is renewable energy?

    asked by Sarah
  73. Math

    What are the odds in favor of getting at least one head in three successive flips of a coin? Answer: 1/2 Is this correct? Could you please explain if I got it wrong? Thanks.

    asked by B.B.
  74. technology

    What is air transport?

    asked by kk
  75. eng'g materials

    can someone help me find a site that can help me explain about "electric refining process"- thanks a lot

    asked by akitsuke
  76. Math

    On a TV game show, the contestant is asked to select a door and then is rewarded with the prize behind the door selected. If the doors can be selected with equal probability, what is the expected value of the selection if the three doors have behind them a

    asked by B.B.
  77. Physics

    I have to plot a graph of Pressure gradient vs average velocity (water in a pipe, I have all the data). I plan to put the average velocity on the x axis, since I could control that better in an experiment. Do you agree/ Thanks. Charlie

    asked by Charlie
  78. sociology

    What are the messages about the meaning of being female that were communicated by "girls' rules" basketball?.

    asked by steve
  79. SS

    My 4th grader needs to draw a picture for her SS words we are having trouble with the word "Region" if anyone can help I thank you in advance.

    asked by Amanda
  80. Differential Calculus

    A ball thrown up has a height f(t)=250t-25t^2 after t seconds. (1) find the maximum height (2) find the velocity when it hits the ground.

    asked by matrix school 2
  81. social life

    What aspects of social life do you expect not to undergo substantial change prior to the middle of the 21st century?

    asked by phil
  82. Math

    The game of dots is played by rolling a fair die and receiving $1 for each dot showing on the top face of the die. What cost should be set for each roll if the game is to be considered a fair game? Answer: The equally likely outcomes of each roll are

    asked by B.B.