Questions Asked on
November 14, 2009

  1. Chemistry

    In which orbital does an electron in a phosphorus atom experience the greatest effective nuclear charge? a. 1s b. 2s c. 2p d. 3s e. 3p I originally thought 3p, since those are the outer electrons, but that was marked wrong. Why is it not 3p? Is the right

    asked by C.
  2. AP Chemistry

    You are given a small bar of an unknown metal X. You find the density of the metal to be 10.5g/cm3. An x-ray diffraction experiment measures the edge of the face-centered cubic unit cell as 4.09 A. (1A=10^-10m) Identify X.

    asked by Angie
  3. english 30

    "foremother" by lillian bouzane what is the significance of the poems title and how does it help develope the theme

    asked by carol
  4. chemistry.

    What is the concentration (M) of a NaCL solution prepared by dissolving 9,3g of Nacl in sufficient water give 350ml of solution?.Any idea???

    asked by Denmark
  5. AP Chemistry

    Iron has a density of 7.86 g/cm3 and crystallines in a body-centered cubic lattice. Show that only 68% of a body-centered lattice is actually occupied by atoms, and determine the atomic radius of iron.

    asked by Angie
  6. Chemistry

    A 100.0 mL of 0.200 M methylamine, CH3NH2, is titrated with 0.100 M HCl. Calculate the pH after 70.0 mL of 0.100 M HCl has been added.

    asked by Donna
  7. Math

    How do you write 2.78 in expanded form

    asked by Nicole
  8. 4th grade

    IN A TUG OF WAR, 5 DONKEYS ARE EXACTLY EQUAL TO 2 ELEPHANTS. IN ANOTHER TUG OF WAR, 3 ELEPHANTS ARE EQUAL TO 1 CAR. WHICH TEAM SHOULD WIN IF A CAR AND 3 DONKEYS ARE MATCHED AGAINST 4 ELEPHANTS?

    asked by VIVI
  9. chemistry

    Delta H is given and is-6186.0 Calculate the difference, deltaH-deltaE=delta(PV) for the combustion reaction of 1 mole of methyl octane. (Assume standard state conditions and 298 K for all reactants and products.)

    asked by BREE
  10. honors english

    In the Crucible what epithet did Giles Corey avoid by remaining silent?

    asked by jim
  11. honors english

    In the Crucible what epithet did Proctor fear was fraudulent?

    asked by jim
  12. Chemistry

    Need help with this lab: (sorry so long) Hypothesis: The amount of product will be regulated by the limiting reactant. Procedure: First, I took two test tubes from the Glassware shelf. I added 6 mL of the copper sulfate solution to one, and 6 mL of the

    asked by anonymous
  13. Chemistry

    A tin atom has 50 electrons. Electrons in which sublevel of this atom would experience the lowest effective nuclear charge? a. 1s b. 3p c. 3d d. 4s 3. 5p

    asked by C.
  14. English Lit

    Analysis the double voice in Anne Bradstreet's poem....."The Prologe" "The Author to Her Book"

    asked by Kelly
  15. Physics

    An amusement park ride consists of a rotating circular platform 8.26 m in diameter from which 10 kg seats are suspended at the end of 1.14 m massless chains. When the system rotates, the chains make an angle of 16.2 degrees with the vertical. The

    asked by bubba
  16. Math

    Solve for x: sec(2x)csc(2x) = 2csc(x) for 0 < x < 2pi [the first "

    asked by Anonymous
  17. 4th grade

    On the average your heart beats about 72 times per minute. At this rate, about how many times will it beat: a) in a 30-day month; b) in a year; c)in your lifetime, if you live to 72 years of age?

    asked by VIVI
  18. english grade 12

    what are 2 examples of emjambment in the poem "vancouver-courtney-calgary" by george bowering

    asked by carol
  19. Chemistry-Polarity

    I am having trouble understanding polarity. I think I understand what it is - when a chemical bond occurs and there is or is not a resulting charge on the molecule. And the book says that the amount of polarity is the difference in the electronegativity

    asked by Mary
  20. Math

    I am having trouble understand what is the expected value of rolling a die? I know that I would start by finding the probability of 1,2,3,4,5,6. But I do not know what to do after that?

    asked by Anonymous
  21. english grade 12

    in the poem grammar poem by Rita Wong list three different metaphors used to describe english and english grammar. do you agree with her assesment and why

    asked by sherry
  22. Math - Algebra word problem

    Ace manufacturing has determined that the cost of labor for producing x transmissions is L(x) = 0.3x2 + 400x + 550 dollars, While the cost of materials is M(x) = 0.1x2 + 50x + 800 dollars. Write a polynomial T(x) that represents the total cost of materials

    asked by Ashley
  23. Geography

    How do you think the existence of nearly 3000 ethnic groups and 800 languages affect life in countries south of the Sahara? Sub-saharan Africa displays more diversity than anywhere in the world. This is more apparent in the number of languages spoken. The

    asked by mysterychicken
  24. Chemistry

    Which test tube has largest amount precipitate? Why? (use terms such as limiting reactant and excess reactant to explain) Do I just name the test tube that weighs the most and I need help with the explanation. I did not list the actual chemicals just need

    asked by anonymous
  25. Literature

    'Pick a special day of the year. Write down atleast two things that you might see, hear, taste, smell, or touch on that day. Try to find images that reveal what you feel at this moment, on this day. Now write a haiku about your special day.' I reallyyy

    asked by mysterychicken
  26. english 30-1

    why does the poet use italics in grammar poem by rita wong

    asked by tina
  27. Math-Answer included

    Five numbers are to be picked, without repetition, from 44 numbers to determine the winner of the Fortune Five game in the state lottery. If the order of the numbers is insignificant, how many different ways can a winning quintuple be selected? What is the

    asked by Anonymous
  28. physic

    Hi!Need help please. Question:A car initially traveling at 24.0 m/s undergoes a constant negative acceleration of magnitude 2.10 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the

    asked by Chan
  29. chemistry

    how many grams of Sb2S3 will contain 4.80 moles of S

    asked by Trace
  30. Chemistry

    Under the correct conditions, the element molybdenum emits X-rays with a characteristic wavelength of 0.711A (7.11*10^-11m). These X-rays are used in diffraction experiments to determine molecular structures. How fast does an electron need to be moving to

    asked by C.
  31. Physics

    A 10cm times 10cm times 10cm wood block with a density of 700kg/m^{3} floats in water. What is the distance from the top of the block to the water if the water is fresh? and If it's seawater?

    asked by Ana
  32. Chemistry

    How do we know what salt has the lowest molar solubility?

    asked by John
  33. 9th grade

    what do you call a female bug that floats?

    asked by Anonymous
  34. math

    How do you read .0125

    asked by Bob
  35. Probability

    A card is selected from an ordinary deck of 52 cards. The probability that the card is a queen or a spade is what?

    asked by Anna
  36. science

    A 400kg sports car collides with a stopped pickup 40m/s. After the collision, the sports car stops and the pickup moves forward at 15m/s. What is the momentum of the sports car before the collision? What is it the mass of the pickup?

    asked by Jon
  37. physics

    two rocks are dropped off a cliff. the second rock hits 1.6 s after the first. how far below the cliff is the second stone when the rocks are 36m apart? (10.97m)

    asked by Sammeh
  38. Math

    If a salesman is paid a $2,100 commission on the sale of a $35,000 sailboat, what is his commission rate?

    asked by Anthony
  39. physics

    A diver jumps from a height of 24.0m into a swimming pool. What's her speed when she enters the water? (21.7m/s) if the diver stops after sinking 3m into the water, what's the acceleration in the water? (78.4m/s^2)

    asked by Sammeh
  40. Economics

    Call Us demand function is Q=410-P and MC=10+5Q. Given that TFC=$0 a)derive an equation for TC b)calculate the profit maximizing level

    asked by Special
  41. science

    A 400kg sports car collides with a stopped pickup 40m/s. After the collision, the sports car stops and the pickup moves forward at 15m/s. What is the momentum of the sports car before the collision?

    asked by Jon
  42. Physics

    Water flowing through a 2.8 cm-diameter pipe can fill a 200 L bathtub in 5.8 min.What is the speed of the water in the pipe?

    asked by Ana
  43. Criminal Justice

    I am at a loss right now.. Can anyone help me think of the names of some historical figures in police history? It does not have to be any specific state, I just need a few people who did something remembered in history.. I have searched and searched, and

    asked by Bryan
  44. word problems

    Paul read 20 pages of a book in 15 minutes. (a) What is Paul’s reading rate of pages per minute? (b) If he continues to read at the same rate, how many pages will he read in 1 hour?

    asked by Joanne
  45. Geography

    25. One problem the countries of Rwanda and Burundi share is a. a lack of means for moving their goods to foreign buyers b. a lack of fresh water supply c. the absence of fertile soil d. very small populations I'm stuck between A and D...? Thanks -MC

    asked by mysterychicken
  46. Geography

    Need help writing an essay on this: How do you think the existence of nearly 3000 ethnic groups and 800 languages affect life in countries south of the Sahara? Thanks -MC

    asked by mysterychicken
  47. Math

    Can someone explain to me the rules of distribution. I have a word problem which asks my opinion of applying distribution to each problem but I don't completely understand distribution and when it is applied and when it isn't.

    asked by Anonymous
  48. 7th grade

    I HAVE A HOMEWORK INFORMATION OF CONTACT LENSES PROBLEMS OR INFECTIONS

    asked by KARLA
  49. Algebra

    Factor by Grouping. 15r^2-19r+6

    asked by Lilly
  50. Probability

    A jar contains four red, four yellow, and three green jelly beans. If Joan and Jim take one jelly bean each, the probability that they both take a red jelly bean is?

    asked by Anna
  51. Spanish Proofread please!!

    El sueño americano de Esperanza es fuerte porque ella tiene una vida difícil y aprende crear su identidad con los recuerdos de Mango St. y las penurias que ocurren. Esperanza quiere tener una casa suya con muchos árboles y una jardín grande porque

    asked by Katherine
  52. English Lit

    The double voice in Anne Bradstreets's poem.

    asked by Kelly
  53. Chemistry

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

    asked by Yo
  54. physics

    two rocks are dropped off a cliff. the second rock hits 1.6 s after the first. how far below the cliff is the second stone when the rocks are 36m apart? (10.97m)

    asked by Sammeh
  55. 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?

    asked by Anonymous
  56. Probability

    The probability that Robin hits the target is 0.6. The probability that John hits the target is 0.3. The probability that Robin hits the target and John does NOT hit the target is?

    asked by Anna
  57. crt 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 Anonymous
  58. physics

    two rocks are dropped off a cliff. the second rock hits 1.6 s after the first. how far below the cliff is the second stone when the rocks are 36m apart? (10.97m)

    asked by Sammeh
  59. Physical Science

    If an engine must do 500 joules of work to pull a 100 N load up to a height of 4 meters, What is the efficiency of the engine?

    asked by Brittany
  60. Economics

    Suppose that a movie theater owner faces the demand curve given by P=10-.001Q where P is the price of a ticket in dollars and Q is the number of tickets sold per week. Suppose that all the cost associated with the theater other than film costs do not vary

    asked by Brad
  61. Economics

    A manufacturing firm produces output using a single plant. The relevant cost function is TC=45,000+8Q squared and the demand function is Q=100-0.02P a)What is the minimum level of AC b)What is the firms profit when AC is at a minimum? c)What is the firms

    asked by Special
  62. English Lit

    What's the Puritan Thought in Mary Rowlandson, ¡§A Narrative of the Captivity and Restoration of Mrs. Mary Rowlandson¡¨?

    asked by Kelly
  63. Prob and Stats

    A lot of pigs should be shipped to marken when their average weight is 220lb. If the pigs are too light, then fewer total pounds are sold. If the pigs are too heavy, then a lower price is received. To determine what a lot of pigs should be shipped, the

    asked by Statistics help!
  64. Physical Science

    Suppose you want to heat 40 kg of water by 20 C. How many joules of heat are required?

    asked by Roberta
  65. Physical Science

    A red light source and a green light source shine on a white screen. what color will the screen be? Explain your answer. If a blue object is placed in front of the screen, what color will it be? explain your answer

    asked by Brittany
  66. math

    1. Find the additive and multiplicative inverses for each of the following. (a) 8 (b) 3 1/2 (c) 1/4

    asked by sam
  67. math

    how do you write .0125 as a fraction and mixed number in simplest form? Little confused.

    asked by Bob
  68. History

    I need some help on this essay question for my history class. I'm confused. There are three instances of the theory of the Manifest Destiny in the US as we approach 1845. Name the three examples, discuss each of one and it's relationship to the growth of

    asked by Josh
  69. Algebra 1

    Choose the correct domailn for the function t=35+5w where 0 less than or equal to w less than or equal to 5 and w is an integer A. 0,1,2,3, 4, 5 B. 1, 2, 3, 4, 5 C. 35, 40, 45, 40, 55 D. 40, 45, 50, 55 E. 40, 41, 42, 43, 44, 45

    asked by Gabriel
  70. 9th grade

    Mr. Mist’s ramp broke so he tried to lift the his 150 Newton box of ungraded papers with a pulley system. Mr. Mist had to pull the rope in his system 3 meters. The papers were lifted into his car by the pulley system which lifted the box 1.5 meters,

    asked by Kevin
  71. math g12

    How do u expand this? (a+b+c)^n

    asked by p
  72. Geography

    How has the Suez Canal been a catalyst for nationalism in Europe? First the French felt that developing countries were colonies to conquer and use at their discretion. The discretion also included building a canal for strategic military purposes. The Suez

    asked by mysterychicken
  73. The Writer by Richard Wilbur (literature)

    could you please help me We were supposed to find three extended metaphors in this poem which I did but for one of them i don't know which quote to use because we are supposed to underline the indicators for that metaphor. The one i need help on is the

    asked by Cindy
  74. For Haley

    Even though you mean well, your last three responses have been either incomplete or incorrect. The one to http://www.jiskha.com/display.cgi?id=1258225501 is totally off the mark. Please make sure you are familiar with the topic before replying.

    asked by Reiny
  75. Preschool teacher needs your help... thx a mill

    I am a preschool teacher and my 3 and 4 year olds are struggling with their numbers and colors.... What fun game could I play with them to teach them their numbers and colors?

    asked by Marcia
  76. 1301

    It is often assumed that the South had better military leadership. Might it be argued that the South enjoyed superior military leadership in the East, at least until 1864, but that the North had consistently better leadership in the West?

    asked by susan
  77. calculus

    Consider line segments which are tangent to a point on the right half (x>0) of the curve y = x^2 + 1 and connect the tangent point to the x-axis. If the tangent point is close to the y-axis, the line segment is long. If the tangent point is far from the

    asked by Hal
  78. biology

    I am doing a project on the effects of various colors on plant growth. I have a part on my project that says I have to write about the lights, and plant table used. I am lost, does anyone know what might refer to? Please help

    asked by Anonymous
  79. Math

    write 1/2, 3/4, 2/3, 0.95 from least to greatest

    asked by Anthony
  80. chemistry

    what is the mass of one mole of carbon dioxide?

    asked by Trace
  81. English1A- Critical Thinking and Writing

    Hi can someone proofread my introduction to a 7 page essay regarding Gender roles and Disney movies? Gender Stereotypes Society affects how the children of today perceive gender roles. From a very early age, the basic rules of membership are taught as

    asked by Kuromi
  82. economics

    QUICK MEAL IS A FAST FOOD OUTLET THAT SELLS BOX ,LUNCHES FOR $ 120 DOLLARS EACH.iTS TOTAL COST FUNCTION IS TC= 80,000+ 20q + O.O2q should the owners close the resturant?if so why?

    asked by sherry
  83. World Religions

    What ideas do you have for an introduction to my "Islamic Milestones" brochure? What I'm discussing in this brochure is about Birth, Food and Drink, Marriage and Family, and Death.

    asked by AL 87
  84. History

    The assignment is to write a speech (from Seward's perspective)that gives the reasons for purchasing Alaska. Researching I found: To maintain Russia's friendship (England's government had been sympathetic ti the Confederacy during the recent American Civil

    asked by anonymous
  85. business

    What are the steps necessary to ensure a successful system implementation

    asked by april
  86. Math

    Determine an equation of the circle that is tangent to both axes, has its center in the fourth quadrant and passes through the point (8, -9). Help please? Thanks much!

    asked by Nikki
  87. computers

    The recursive algorithm of the 4th Section of the chapter "Computational Geometry" employs a trick of presorting, in which we maintain two arrays X and Y of the input points P sorted on coordinate x and y, respectively. The algorithm starts with sorting

    asked by roba
  88. Psycholgy

    Criticisms of McVee's conceptualization of schema theory?

    asked by Anonymous
  89. science

    electricity- give 2 examples of using cells......... ive put clocks and laptops i not sure if this is right. thanks for your help!

    asked by sascha
  90. Facility Planning

    has anyone done a paper about hospital/clinic that is being renovated or needs re-construction?

    asked by J
  91. math

    if -2*-2 is 4 why does -2 squared -4

    asked by Mimmy
  92. college

    Martha, the company receptionists, is told to be pleasant on the phone and represent her employer with an upbeat mood. Although people calling in can't see Martha's expression, she spends most of her day siling. Her coworkers remark that Martha always

    asked by cielo
  93. English

    With plural nouns sometimes you add an S, sometimes and es, sometimes ies, sometimes man, men. Is there a rule for this? do you know a link where I can learn more about this? Any help please.

    asked by Thai Jazmine
  94. INFECTION CONTACT LENSES

    I NEED INFORMARTION FOR THE INFECTION WHEN USE CONTACT LENSES

    asked by KARLA
  95. Chemistry

    How can you determine which acid solutions (all at 0.10 M) has the highest concentration of anions?

    asked by Sandra
  96. probability

    The probability that Alysha will miss school today is 0.15. The probability that Carla will miss school today is 0.07. The probability that both of these students will NOT miss school today is what?

    asked by Anna
  97. english

    what is an adjective that i could use to describe someone with a lot of skills in business like a business woman,

    asked by sarah
  98. French

    What is supervisor in French? Right now I am learning about professions, and this is the one I don't know

    asked by Anna
  99. communications

    Next, you will explain the nature and history of the controversy and identify the major conflicting points of view in the discussion on how Does media influence or effect children. I am having trouble finding what I need.

    asked by sally
  100. communications

    I am looking for any article to help me with that question.

    asked by sally
  101. math

    put this in an math expression you bake two baking sheets wit 12 scones each, two baking sheets with 20 cookies each, and one baking sheet with 2 scones and 10 cookies

    asked by shakyla
  102. social studies)

    how did Florida get involved in the Revoloutionary War?

    asked by Anonymous1147
  103. science

    oe do Orchid Glads grow

    asked by Tajia
  104. English Lit

    What's the Ideological conflict in the eighteenth century of United States?

    asked by Kelly
  105. MATH 116

    Determine whether the given numbers are solutions of the inequality. 1, -17, -19, 3 y-10 > 2y-4 Is 1 a solution?-17?-19?-3???

    asked by ggift
  106. Chemistry

    In an atom, an electron in which of these sublevels can absorb a photon of energy but cannot emit one? a. 3s b. 2s c. 3p d. 1s e. 3f Would it be 1s? I don't really understand, if someone could explain this to me I'd appreciate it

    asked by C.
  107. history

    for my history homework i need to make a poster or a leaflet showing different attitudes to war. ive got no idea what to do. ive looked on different websites for ideas but nothing has helped me. thankyou...

    asked by yve
  108. medical coding & billing

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

    asked by sharon
  109. Algebra1

    I want to know if I got this problem right. 2x-4¡Ü4x-3 2x-4+4¡Ü4x-3+4 2x¡Ü5x 2x¡2=5x¡2 x¡Ý2.5

    asked by Samantha
  110. critical thinking

    I need an article from a newspaper or something published between the dats of September 10 2009 till December 4 , 2009. It must be a weak argument that has fallacies and can be refuted by counter examples. For the assignment i need to reconstruct the

    asked by Andrew
  111. math

    is there a way to do this problem or do i have to just guess and check. because by guessing and checking, i can't find the right answer Name a function with the following characteristics: note: f prime means the first deriviative f is continuous over the

    asked by sammy
  112. maths

    factorise: d2 + 2d + 1 - e2

    asked by Raquel
  113. Prob and Stats

    Einstein claims that his true average quiz score is 90. You have sample data on 25 of his quizzes. The average for that samaple is 83, and the standard deviation for the sample (s) is 4. The alpha for this two-tailed test is 0.05. Provide the calculated

    asked by Statistics help!
  114. physics

    A student pulls a backpack weighing 70 N a distance of 50m with a force 25N What amount of force does the student do?

    asked by Noah
  115. Organic Chemistry

    1. What is Dipole Repulsions? 2. How does transannular strain affect large cycloalkanes (more than 6 ring atoms)? 3. What is a 1,3-Diaxial interaction?

    asked by Cerise
  116. math

    how do you find the GCF of 54 and 81?

    asked by Larry
  117. math

    f(x) = (2x)/ [(x^2 + x + 1)]^(1/2) How would I find the domain of f?

    asked by alison
  118. American National Government

    When was the FDA established? My answer is 1906. Is this correct? Thanks for your help.

    asked by B.B.
  119. Math

    1.981 × 10^-6

    asked by Lynn
  120. chemistry

    how to get benzoic acid from a mixture of benzoic acid and salt?

    asked by peter
  121. Anatomy & Physiology

    What is the first layer of the skin calleed?

    asked by Jasmine
  122. communication

    I just need to find out, were can I find any info on how doe the media influence or affect children. I need the history and the controversy and identify the major conflicting points of view

    asked by sally
  123. Ms.Sue

    Thank you very much.

    asked by sally
  124. college algebra

    Solve for x: -(4x+4)/5= (5x-1)/2 - x/3

    asked by Laura
  125. math

    divide the rectangle by tens and ones for each factor. then completes the calculation. 22X11 ~arrays and an expanded algorithm does anyone know how to do this??

    asked by Anonymous
  126. world religions

    how are Food and Drinks considered a milestone for the Islam religion?

    asked by AL 87
  127. Religion

    What should I say in the introduction to my "Islamic Milestones" brochure?

    asked by AL 87
  128. English Lit

    The double voice writer in 18th century of American Lit. And the double voice is...?

    asked by Kelly
  129. spanish

    Hi, can someone please tell me the english translations of these words? thanks no gastar, suscribirse, and transferir

    asked by Rachel
  130. I.T

    if noone runs the internet how dose it access information

    asked by nicketa
  131. spelling

    Is this how you spell "comocossy"?

    asked by Aspyn
  132. English

    an act of representing something beyond a literal person, place or object

    asked by jj hardy
  133. MATH 116

    Write the set {x|x

    asked by ggift
  134. Math

    1/2, 3/4,

    asked by Anthony
  135. math

    is -2 squared -4 or 4 why?

    asked by Mimmy