Questions Asked on
May 1, 2008

  1. chem

    choose the compound below that contains at least one polar covalent bond, but is nonpolar a. ICl3 b SeBr4 c. CF4 d. HCN Im stuck between C and D C is a tetrahedral which has no net dipole so is non polar, and D is linear which also makes it non polar.

    asked by natash
  2. physics waves/bugs

    A bug on the surface of a pond is observed to move up and down a total vetical distance of 0.10m, lowest to highest point, as a wave passes. a) what is the amplitude of the wave? [for this, I got 0.05 by dividing 0.10m by 2.] b) If the ripples increase to

    asked by Anonymous
  3. chem

    draw the lewis structure for NO2- including any valid resonance structures. which of the following statements are true? a. the nitrite ion contains 2 N-O bonds that are equivalent to 1 1/2 bonds. b. the nitrite ion contains 2 N=O double bonds c. the

    asked by natash
  4. chemistry

    which molecule or compound below contains a polar covalent bond? why? C2H4 LiI NCL3 ZnS AgCl

    asked by natash
  5. chemistry

    use the data given below to construct a Born-Haber cycle to determine the lattice energy of CaO Ca(s)--->Ca(g) 193 Ca(g)--->Ca+(g) + e- 590 Ca+(g)--->Ca2+(g) +e- 1010 2O(g)---->02(g) -498 O(g) +e--->0-(g) -141 O-(g) + e---->O2-(g) 878 Ca(s) +1/2 O2(g)--->

    asked by natash
  6. science

    as temperature rises, solids generally become more soluble in water, but the gases become less soluble. If a soft drink contains high concentrations of sugar and carbon dioxide, which of the following may be expected to happen if it is cooled down? 1.sugar

    asked by barby
  7. Psychology-Opinions wanted

    Personality disorders are thought to originate during childhood but many health professionals are reluctant to diagnose children. Why is this?

    asked by Christian
  8. Applied Math- Gr.11

    A farmer wants to enclose three sides of a rectangular pasture unsing 1000 yards of fencing. The fourth side does not require fencing because it borders a river. What dimensions (length and width) should the farmer choose in order to enclose the greatest

    asked by Greg
  9. physics wave

    A) Show that the average rate with which energy is transported along a cord by a mechnical wave of frequency f and amplitude D is: P(average) = 2(pi^2)u v(f^2)(D^2) v is speed of the wave u is the mass per unit length (M/L) B) If the cord is under a

    asked by Anonymous
  10. trig

    sinx = 4/5 and x terminates in Quadrant II Find sin2x and cos2x How to get the answers, which are sin2x = -24/25, cos2x = -7/25?

    asked by Amandeep
  11. Business Calculus

    A cylinder is inscribed in a right circular cone of height 8 and radius (at the base) equal to 8. What are the dimensions of such a cylinder which has maximum volume?

    asked by Daniela Davila
  12. english- please help me edit

    Hi I was wondering if anyone can help me edit/proofread my english essay =)

    asked by Dina
  13. chemistry

    how do u do a redox balance of the following reaction : Fe(NH4)2(SO4)2*6H2O + H2C2O4 + K2C2O4 + H2O2 -> K3Fe(C2O4)3*3 H2O + (NH4)2SO4 + H2SO4 +H2O i only know Fe2+ -> Fe3+ +1e-

    asked by danny
  14. Physics

    A small ball rolls horizontally off the edge of a table that is 1.20 m high. It strikes the floor at a point 1.52 m horizontally from the table edge. How long is the ball in the air? What is the velocity of the ball when it hits the floor?

    asked by Eva
  15. History

    Without our two political parties cutting across economic and geographic interests democracy as we know it could never have been made to funtion. The author probably meant to suggest that a) an important feature of u.s. political system is the broadly

    asked by Nathaly
  16. social studies

    Without our two political parties cutting across economic and geographic interests democracy as we know it could never have been made to funtion. The author probably meant to suggest that a) an important feature of u.s. political system is the broadly

    asked by nathaly
  17. science

    humidity is the amount of water vapor in the air at a given time. at warm temperatures, air can hold more moisture than it can at cold temperatures. Relative humidity is the amount of vapor the air is holding expressed as a percentage of the amount the air

    asked by barby
  18. History

    Between 1935 and 1975, a period that included Worl War II, the birth rate rose from 16.9 to 25 per 1000 people. what was the most likely cause of this baby boom? a) the change in view toward artificial birth control methods b) the exxpansion of the middle

    asked by nathaly
  19. algebra

    I have to simplify 7ab to the power of -2 over 3w. How do I do this?

    asked by anonymous
  20. social studies

    Without our two political parties cutting across economic and geographic interests democracy as we know it could never have been made to funtion. The author probably meant to suggest that a) an important feature of u.s. political system is the broadly

    asked by nathaly
  21. math

    why dos presidents put vegetables in his blender

    asked by tom
  22. Physics

    A tennis ball is struck such that it leaves the racket horizontally with a speed of 53 m/s. The ball clears the net and hits the ground a horizontal distance 29 m from where it was hit. How long was the ball in the air and how high was the ball above the

    asked by Angelina
  23. trig

    If sin theta = x and -pi/2 is less than or equal to theta less than or equal to pi/2, find sin 2theta and cos 2theta in terms of x. Is it alright if I recommend you to my classmates tommorow? YOu seem to know more than my professor!

    asked by Priya
  24. trig

    cotx = -2 and 0 less than or equal to x less than or equal to pi Find sin2x and cos2x How to get the answers of sin2x = -4/5, cos2x = 3/5?

    asked by Amandeep
  25. History

    Between 1935 and 1975, a period that included Worl War II, the birth rate rose from 16.9 to 25 per 1000 people. what was the most likely cause of this baby boom? a) the change in view toward artificial birth control methods b) the exxpansion of the middle

    asked by Nathaly
  26. social studies

    the task of economic policy is to create a properous america. The unfinished task of properous Americans is to build a Greta Society. Our accomplishment have been many; these tasks remain unfinished:> to achieve full employment without inflation;> to

    asked by barby
  27. chemistry

    How much 0.10 M Base (in mL) is required to neutralize 8.00 mL of the 0.10 M acid? Base Acid Base Volume (ml) NaOH HCl ___________ NaOH HC2H3O2 ___________ How would the volume of base change from the problem above if the 8.00 mL of 0.10 M Acid was first

    asked by Amy
  28. trig

    e.g. tan 315 = -1, does that work in our equation ?? Yes, thank you again Reiny! My next question is to find sin theta and cos theta. cos 2theta = 1/3 and pi less than or equal to 2theta less than or equal to 2pi I hope Im not overburdening you with

    asked by Priya
  29. please revise

    Evidence clearly demonstrates Latin America’s transition to democracy. Though unstable, it’s long democratic history reveals progression from oligarchy, to semi-democracy, to an electoral democracy. Thus, with these three cycles of democratization

    asked by Christi
  30. maths

    How to prepare a working model in maths for standard IV?

    asked by pawan
  31. Horticulture

    What are the complexities of using Sulphar of iron in moss control

    asked by Diarmuid
  32. History

    a study of the causes of the american revolution of 1776, the french revolution of 1789, and the russian revolution of 1917 best supports the generalization that revolution is most likely to occur when a) a society has alower standard of living than those

    asked by Nathaly
  33. Chemistry.. help plz

    3. How much 0.10 M Base (in mL) is required to neutralize 8.00 mL of the 0.10 M acid? Base Acid Base Volume (mL) NaOH HCl ____________ NaOH HC2H3O2 _____________ 4. How would the volume of base change from problem three if the 8.00 mL of 0.10 M Acid was

    asked by Amy
  34. chemistry

    How much 0.10 M Base (in mL) is required to neutralize 8.00 mL of the 0.10 M acid? Base Acid Base Volume (mL) NaOH HCl ___________ NaOH HC2H3O2 ___________ How would the volume of base change from problem above if the 8.00 mL of 0.10 M Acid was first

    asked by Amy
  35. trig

    If sinx = -3/5, tan x > 0, sec y = -13/5 and cot y < 0, find the following: a. csc(x + y) b. sec (x - y) How do I get the answers of a. -65/33 b. -65/16 Thank you

    asked by Priya
  36. trig

    Solve the given triginometric equation analytically. Use values of of x for 0 less than or equal to x less than 2pi sin^2x - 2sinx = 1 How do I get towards the answer of 3.569, 5.856 Thank you again

    asked by Priya
  37. Chem HW Help!

    I need help answering some questions on how to combine gas law.If for some reason you don't feel you shold answer this question can you provided me with the steps on how to combine gas laws or give me a good website that may provided help or may have a

    asked by Lizy
  38. Math

    Write the equation that is paralell to y-3x=6. We didn't learn this yet, would you start by putting it as y=3x+6?

    asked by Anonymous
  39. science

    What are ways (other than downsizing cars) in which increased fuel economy can be achieved? and List reasons why people buy SUVs and large trucks. Thanks!

    asked by Junior
  40. Physics

    What are the features of electromagnetic waves?

    asked by Wendy
  41. trig

    I am almost finished iwth my questionings:) Solve the given triginometric equation analytically sin4x - cos2x = 0 Priya

    asked by Priya
  42. science

    scientists performedan experiment to determined whether there is a connection between learning ability and food. they took two groups of 20 mice each, all from the same purebred strain. the mice were deprived of food for 3 days and then given a standard

    asked by barby
  43. Check my Math

    Is this correct? Find the slope of the linear equation 2y+3x=6. I think it is Slope is -3/2

    asked by Anonymous
  44. science

    an object accelerates (cahnges its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT a) a ball striking a wall, in which the force of the ball

    asked by barby
  45. Physics

    Why are some sunglasses polarized horizontally?

    asked by cheese
  46. Principles of Law Enforcement

    After seeing a story on the local news about a police officer suspended for allegedly using excessive force to quell a disturbance at a night club, you decide to write a letter to the editor of your local paper. In a short letter, examine the importance of

    asked by DTD
  47. American History

    1. Realpolitik was a campaign to bring honesty back to the political culture of the United States after the Vietnam War. ---------------------my answer: True? Realpolitik is political realism or practical politics, esp. policy based on power rather than on

    asked by CM
  48. Science

    Which of the following is a nonelectrolyte? a) C3 H8 (propane gas) b) H2 SO (sulfuric acid) c) HCL (hydrochloric acid) d) HNO 3 (nitric acid) e) NaCL (table salt)

    asked by Nathaly
  49. economics

    In general the role of board of directors is to: a) Direct the day-to-day activities of the firm b) Represent investor interests in management of the firm c) Insure that the firm operates legally d) Provide "staff" assistance to the CEO in strategic

    asked by barby
  50. social studies

    the task of economic policy is to create a properous america. The unfinished task of properous American is to build a Great Society. Our accomplishments have been many: these tasks remain unfinished; > to achieve full employment without inflation; > to

    asked by barby
  51. algebra2

    name a point that lies on the circle: (x-2)^2+(y+3)^2=16 I cannot use the points (2,1) or (6,-3) and I can't find another point that works.

    asked by Jane
  52. Advanced Math

    Find the values of x for which the equation sin x = -1 is true 2 pi n pi/2 + 2 pi n pi + 2 pi n 3 pi/2 +2 pi n Can someone please help. I don't understand how to do this.

    asked by Kate
  53. 8 grade math

    please check my answer thanks At Albany's Children's Hospital, the hospital cenuson Jan 4 is 110 According to the following data, what's the hospital census for Jan 5 Admissions 10 Discharges 2 A&D 1 so this is what I got 110 + 10 (#of admissions) = 120

    asked by Anonymous
  54. trig

    Find sin (alpha/2) and cos (alpha/2) sin alpha = 3, -pi/2 < alpha

    asked by Priya
  55. science & politics

    does anywhere in the universal declaration of human rights provide any protection against such adverse consequences for human populations, especially for those who did not cause those consequences and have not benefited from global warming/global climate

    asked by Jay
  56. trig

    Evaluate without using a calculator or tables sin(pi/3 - 3pi/4) The answer is - 1+ square root of 3 / 2 square root of 2 How do I get this answer?

    asked by Johnathan
  57. trig

    Solve the triginometric equation analytically. Use values of x for 0 less then or equal to x less then 2pi The equation for this question is sin2x + cos2x = 0

    asked by Priya
  58. algebra

    This is the ordre of operation 20(8)(5) what do i have to do with the ()

    asked by Anonymous
  59. trig

    If sin alpha = -3/5, sin beta = -5/13, P(alpha) is in the third quadrant, and P(beta) is in the fourth quadrant, find the following: a) sin (alpha - beta)

    asked by Priya
  60. trig

    Solve the given triginometric equation analytically 2 sinx = tanx

    asked by Priya
  61. sst

    how i make a poster on social evil

    asked by riya
  62. social studies

    why did captain newton believe the slave trade had a negative moral influence on the slave ship english crews?

    asked by celia
  63. social studies

    what countries did portugal colonize

    asked by polly
  64. Physics Block System

    Here is the diagram: h t t p ://img152.imageshack.us/img152/3126/blocksysiv5.png *delete spaces in "h t t p :" or it won't load What is the mass of block M that will allow it to accelerate from rest to the right with a a = 2 m/s^2? Surfaces are

    asked by Will
  65. english

    can you find 1 long word that splits into 3 small ones

    asked by hollie
  66. trig

    Use the half angle formula to find cos(pi/12)

    asked by Johnathan
  67. trig

    If 0 is less than or equal to 2theta less than or equal to pi and P(2theta)= (-7/25, 24/25), find P(theta)

    asked by Johnathan
  68. trig

    Solve the given triginometric equation analytically. Use values of x for 0 less than or equal to x less than 2pi P.S Thanks Reiny for your last post, if you are still online.

    asked by Priya
  69. Chemistry DrBob

    What is the pH of the solution created by combining 2.30 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH pH wHCl pH wHC2H3O2 2.30 ________ _________ What are the pH values if you take into

    asked by Amy
  70. trig

    Solve without using a calculator or tables cos(5pi/6 + pi/4) Thank you Reiny!:)

    asked by Priya
  71. trig

    Please evaluate cos 15 degrees

    asked by Priya
  72. trig

    Please find sin (alpha/2) and cos (alpha/2) sec alpha = 3, -pi/2 < alpha < 0

    asked by Priya
  73. Medical terminology

    The term for abnormal increase in platelets

    asked by Maggie
  74. French

    Bonjour, could you please check if i have translated the following sentences correctly? We see honour in both, ‘The Three Musketeers’ and ‘Man in the Iron Mask’ but the way the characters act out this honour is different. -Nous voyons l'honneur

    asked by Salina
  75. Math

    What is -7 minus -5?

    asked by Anonymous
  76. trig

    tanx = 5/12 and sinx

    asked by Amandeep
  77. software

    write a function for delete a 'ITEM' from a linear queue.

    asked by sushil
  78. trig

    Solve the given triginometric equation analytically 7 sinx - 2 = 3(2 - sin x) If your are online, thank you my dear Reiny:) Priya

    asked by Priya
  79. world history

    Name one contrast between athens & sparta.

    asked by jordan
  80. CPE102 - Java

    Can you help me with this portion of the program? Implement a class called Name and its associtated unit tests in a class called NameTests.

    asked by chaos
  81. Mathematics

    Fill in the blanks follows 80, 70, 61, 53, 46, 40, ....

    asked by Sunil
  82. science

    Ions are eletrically charged particles that are formed when certain compounds are dissolved in water. These solutions will conduct eletricity. The swedish scientist Svante Arrhenius coined the term ion (which means wanderer) to explain why solutions of

    asked by barby
  83. Math

    1. Solve for x: 4x/9 = 2(x+4)/3 2. Factor completely : x to the fourth power -16... 3. If a = all #s between -5 and 5, B= all primes and c= whole numbers how many numbers does the intersection of A,B, and C all contain? i think its 2...

    asked by Anonymous
  84. Arts

    Who is first women minister in Rajasthan

    asked by Sunil
  85. science

    an object accelerates (cahnges its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT a) a ball striking a wall, in which the force of the ball

    asked by barby
  86. English Expression

    In Western culture, it is general to exchange cards together with presents by sending a grateful/thankful heart. --------------------- Is the sentence above grammatical? Would you check the ungrammatical parts? Which one is beter of the two, grateful and

    asked by John
  87. macroeconomics

    800-100p=-100+200p how also to graph it.

    asked by tina
  88. Precalculus

    I'm a little uneasy about this one, so I thought I'd ask someone who knows - [QUOTE] (5z^3w/-6m^3)*(-6m^5/25z^9) (OR) 5z^3 -6m^5 ------ * -------- -6m^3 25z^9 Perform the Operations and Simplify[/QUOTE] It's a Multiple Choice. a)wm^2/5z^5 b)wm^2/5z^6

    asked by Michael
  89. marketing

    what are strategic opportunities for eCommerce enabled supply chains

    asked by reca
  90. chemistry

    A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

    asked by aakash
  91. macro

    endogenus vs exogeno

    asked by tina
  92. rawat

    765*987

    asked by jhg
  93. macro

    downturn of 1973-1975

    asked by tina
  94. macro

    how to intervene during downturn.

    asked by tina
  95. science

    what is cell?

    asked by secret
  96. english

    How to start with spoken english for students of Age 4 to8.

    asked by ranahk
  97. writing

    how do i quote a book?

    asked by Abby
  98. mATH

    please Help D=22mi. R=55 perHr T=?

    asked by MaryAnn
  99. nonfiction

    matthias is a example of

    asked by mattie
  100. Principles of Law Enforcement

    You receive an e-mail from your favorite niece requesting some help with her school history project. She says because you are in the law enforcement field, you are the perfect choice to help her with her report. Her topic is historical figures in police

    asked by DTD
  101. Writing

    Ok in this sentence, I am quoting a line from the Lord of the Flies. My question is, do i capitalize the T in the first 'they' ? : Sam and Eric explain this rebellion to Ralph by stating, “’They hate you, Ralph. They’re going to do you.’

    asked by Abby
  102. american history

    1. In 1975, two years after U.S. forces had pulled out of Vietnam, the a. non-Communist forces defeated the Communists. b. Cambodian forces took over most of Vietnam. c. Laotian forces took over most of Vietnam. d. Communist forces took over South Vietnam.

    asked by CM
  103. Math---High Level---

    1. 25% of N is 25. Find N

    asked by JOE
  104. Math

    The diameter of a cylindrical can of motor oil is 3.5 inches (in). The height of the can is 6.5 in. Approximately how many cubic inches of oil will the can hold?

    asked by Chelsea
  105. French

    I'm doing sports vocab words right now, and I forgot which words I'm supposed to use faire du de la etc and jouer a jouer a la, etc... These are the words la voile le patinlage la peche(fishing) la ski du fond la crosse la natation la plongee(diving) le

    asked by Slappy
  106. american history

    true or false? During the 1970s, the southern and western areas of the nation grew more rapidly than the northeastern areas. **sorry...my book doesnt say anything about this

    asked by CM
  107. ethics

    I need help finding 4 to 6 credible Web sites or articles that support, oppose, or simply present information about bilingualism in education or politics. I any one can help me with this, I would greatly appreciate it.

    asked by brady
  108. metal work technology

    classification of all machines

    asked by john
  109. marketing

    sorry for my bad question earlier... maybe this is better What other companies besides Acxiom, that dose the same thing?

    asked by gee gee
  110. social studies

    the task of economic policy is to create a properous america. The unfinished task of properous American is to build a Great Society. Our accomplishments have been many: these tasks remain unfinished; > to achieve full employment without inflation; > to

    asked by barby
  111. social studies

    the task of economic policy is to create a properous america. The unfinished task of properous Americans is to build a Greta Society. Our accomplishment have been many; these tasks remain unfinished:> to achieve full employment without inflation;> to

    asked by barby
  112. algbera

    2x+19=99

    asked by ahmed
  113. medical info mangement

    I was wondering if someone could please explian this to me thanks you very much:) The question is .... As the director of the health information depaertment , what should your policy manual contain ? Now I am a bit confused what that means

    asked by Anonymous
  114. History

    How did America participate in the Cold War?

    asked by Mandy
  115. 8 grade math Ms Sue

    I am sorry A&D patients who have been admitted and dischared the same day

    asked by Anonymous
  116. Physics

    How do you convert kilograms to Newtons?

    asked by Cristy
  117. medical coding True or False

    Please check my answer thanks The coding supervisor is interviewing candidates for a new out patient coding position the JOB DESCRIPTION will assist bthe coding supervisor in this process I said true

    asked by saretha
  118. math

    unscramble this word n d o e p n t i

    asked by lauren
  119. French(needs a site)

    I'm doing a french presentation, and I would like to add some fun/funny facts about the french but I can't seem to find a good site. Please help!

    asked by Ella
  120. bio 11

    i am trying to find the definition of fitness as in evolution but i can't find it and i need it to understanding what i am reading. please someone help me. what is the definition of fitness?

    asked by jessica
  121. science

    Hi. Can someone please help me with this question? Thanks! The transport sector accounts for half of oil used. List other factors that could have accounted for increased oil imports between 1975-1994. Justify your choices.

    asked by Liam
  122. trig

    Prove that, in general, sin(alpha + beta) does not equal sin alpha + sin beta

    asked by Priya
  123. Medical terminology

    What is the term for suture of a nerve

    asked by Maggie