Questions Asked on
March 16, 2009

  1. chemistry

    Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298K at a volume of 1L. Consider the following descriptions of this system: 1. Initial system 2. Starting from the initial system, the volume of the container

    asked by CHEMistry
  2. chemistry

    AlPO4(s)Al^3+(aq)+PO4^3-(aq) PO4^3-(aq)+H3O^+(aq)HPO4^2-(aq)+H2O(l) What is the net ionic equation for AlPO4(s) dissolving in H3O^+(aq)?

    asked by CHEMistry
  3. calculus

    26. A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5

    asked by jason
  4. CHEMISTRY

    Find the number of moles. a. 3.01*10^23 molecules H2O. b.1.000*10^23 atoms C. c. 5.5610 *10^22 ions Na^+.

    asked by Jaz
  5. math

    Farmer Brown had ducks and cows. One day she noticed that the animals had a total of 12 heads and 32 feet. How many of the animals were ducks and how many were cows?

    asked by maddy
  6. Chemistry

    Question: Chloroform, CHCl3, a volatile liquid was once used an anesthetic but has ben replaced by safer compounds. chloroform has a normal boiling point at 61.7 degree C and has a heat of vaporization of 31.4 kj/mol. compute its vapor pressure at 36.2

    asked by eliz
  7. chemistry

    Find the mass in grams. a. 4.30 x 10^16 atoms He, 4.00 g/mol b. 5.710 x 10^23 molecules CH4, 16.05 g/mol c. 3.012 x 10^24 ions Ca^2+, 40.08 g/mol

    asked by jaz
  8. Chemistry-weak acid affects the pH?

    For which salt in each of the following groups will the solubility depend on pH? AgCl AgF AgBr please explain why its the answer

    asked by Amy
  9. chemistry

    suppose that you could decompose 0.250 mole of Ag2s into its elements a.How many moles of silver would you have? how many moles of sulfur would you have? b. how many moles of ag2s are there in 38.8 g of AG2S? how many moles of silver and sulfur would be

    asked by ben
  10. 11th grade

    What are the formal and functional regions of seattle washington???

    asked by Matt
  11. Physics

    A block of weight 3.8N is launched up a 30 degree inclined plane of length 2.25m by a spring with spring constant 2.35kN/m and maximum compression 0.10m. The coefficient of kinetic friction is 0.50. How much kinetic energy does it have at the top of the

    asked by Harold
  12. Economics

    I got a lot of problems with this exercise. I really hope you can help me. Thanks! Samantha Roberts has a job as a pharmacist earning $30.000 per year, and she is deciding whether to take another job as the manager of another pharmacy for $40.000 per year

    asked by Muusen
  13. Science

    The separation of P-waves and S-waves on a seismogram recorded 4500 km from the epicenter of an earthquake is six minutes. On another seismogram that separation is seven minutes. Is the second station closer to or more distant from the epicenter? Explain.

    asked by Angie
  14. Chemistry

    Which electron is, on average, further from the nucleus: an electron in a 3p orbital or an electron in a 4p orbital?

    asked by Jimmy
  15. ACCOUNTING

    P7-2B The board of trustees of a local church is concerned about the internal accounting controls pertaining to the offering collections made at weekly services. They ask you to serve on a three-person audit team with the internal auditor of the university

    asked by ANDRE
  16. ethics

    Write a 200-300 word summary that answers the following questions: what information about race and ethnicity in the united states has helped you better understand or relate to specific minority groups?, Have you learned something new about your own cutural

    asked by kim
  17. Chemistry

    Question: of the salts, NaC2H302, NaCN, NaCl, and NH4NO3, how many form neutral aqueous solutions? How do you determine which are neutral and which do not form neutral solutions?

    asked by Anonymous
  18. Science

    Predict what would happen to a reptile body temperature if the outdoor temperature increases by 10c.

    asked by Zach
  19. chem

    calculate the number of moles in 0.00655 g of antimony

    asked by lala
  20. Chemistry

    According to the quantum-mechanical model for the hydrogen atom, which of the following electron transitions would produce light with the longer wavelength: 2p --> 1s or 3p --> 1s I have the answer, which is 2p --> 1s, but can someone offer some help as to

    asked by Jimmy
  21. chemistry

    Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298K at a volume of 1L. Consider the following descriptions of this system: 1. Initial system 2. Starting from the initial system, the volume of the container

    asked by CHEM
  22. accounting

    Computer equipment was acquired at the beginning of the year at a cost of $56,000 that has an estimated residual value of $3,000 and an estimated useful life of 5 years. Determine the 2nd year’s depreciation using straight-line depreciation

    asked by angel
  23. chemistry

    I want to know HOW to do the problems, not just an answer please. 1.) How many moles of ions are released when 0.27 moles of CoCl2 is dissolved in water? 2.) A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100M NaOh. What is the precent (by

    asked by chris
  24. Psychology

    It is common sense to see that the brain has an impact on the body. If the brain issues the command to look to the left, the body generally responds by doing just that. How much can be said of the reverse? Does the body have an impact on the brain?

    asked by Bryan
  25. Algebra

    Rewrite the rational expression as an equivalent rational expression with the given denominator. (Both are fractions) It's 21 over x squared minus 6x is equal to 1 over x (x-6)(x+5) -21 = 1 x2 -6x x(x-6)(x+5)

    asked by Estela
  26. Math

    How do I solve: log6 (x^2-5x) = 1 1/2log5(r-2)-log5 r) log2 (x-1/x^8) I really don't know how to do these or even start

    asked by lt
  27. math

    Find the maximum and minimum values of f(x,y)=xy on the ellipse 8x^2+y^2=4?????

    asked by alice
  28. Math

    The formula to find the circumference of a circle that has a radius of 6 feet?

    asked by Agustin
  29. Professional communications

    Define and discuss the similarities and differences between routine and positive messages, negative messages, and persuasive messages.

    asked by Barbara
  30. Chemistry

    Pre-Lab Questions Data: [mass of copper wire] 0.738 g [standard solutions] solution 1: 0.738 g of copper wire dissolved in 50.00 mL solution solution 2: 1:2 dilution of solution 1 solution 3: 1:4 dilution of solution 1 [absorbance data at lambda(max)]

    asked by Jake
  31. Physics

    You throw a stone into some nice soft and gushy mud. It penetrates one inch, slowed by a constant force. If you wanted the stone to penetrate four inches instead of one, you would have to throw the stone into the mud? I say eight times as fast?

    asked by Harold
  32. Algebra

    Factor Completely: 1000p^3 - 1 (One thousand P cubed minus one)

    asked by clueless
  33. English

    I have a book report due on Friday and need some help. My book is titled "Blizzard's Wake" written by Phyllis Reynold's Naylor. My report needs to include at least 6 sentences for each: Plot(not plot summaries), Setting, Characterization, Theme, Conflict,

    asked by Jennifer
  34. math

    t+1/t+5=(t-1/t+3)+1 Solve for t

    asked by Debbie
  35. Algebra

    Rewrite the rational expression as an equivalent rational expression with the given denominator. (Both are fractions) -21 = 1 x2 -6x x(x-6)(x+5)

    asked by Estela
  36. 9th Grade Math

    For my hw i have to graph the following equations 1) x - 3y -5 = 0 and 2x = 1 - 3y 2) y - 3x =5 and 3x = 7 + y 3) x = 3y and x +2 = 11 4) y = 2/5x + 1 and x + 2y +11 After done graphing the equations i have to state if there are zero, one, or many

    asked by HELP
  37. history

    how did machiavelli's principles of good governing apply to different renaissance rulers? :) thanks

    asked by anonymous
  38. Physics

    A 50 gram block is placed on a frictionless ramp 2 meters above the ground. It slides down the ramp and compresses a 140 N/m spring at the bottom. How far will the spring be compressed when the block is stopped by the spring? say 1.7 m

    asked by Harold
  39. chemistry

    caculate the number of moles in 8200 g of iron

    asked by mel
  40. Math

    how is the equation of direct variation similar to the linear equation y=mx+b? how are they different?

    asked by Angie
  41. Chemistry

    How do you determine what molecule will have the highest or lowest boiling points. example: if you had CH3F, N2H4, CH3OH and O2. how would you determine what is the highest boiling points? What do you look at?

    asked by eliz
  42. Chemistry

    Question: if you added ethylene glycol to your car's radiator to lower the freezing point to -31.0 degree C, what would the corresponding boiling point of the coolant in your radiator. The freezing point and boiling point constants for water are 1.86 and

    asked by eliz
  43. Finance

    Write a 200- to 300-word explanation of the reasons the following types of companies would need a financial forecast: brand new company, family owned company, and a long-standing corporation.

    asked by Anonymous
  44. Business Writing

    Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe

    asked by Anonymous
  45. math

    A group of five friends go out to the movies. Their average age is 15. Paco is 13 yrs. old Zoey is 16 yrs. old. What is the average age of the other three friends?

    asked by danny
  46. Chemistry

    Which element has the following electron configuration: [Xe] 6s^(2) 5d^(1) 4f^(1)

    asked by Jimmy
  47. math

    Mr. Mitchells office is on a winding side road next to a highway exit.He is driving on the highway at 60mph, and at this rate he expected to arrive at his office at 8:45a.m.However at 8:30 he was forced to leave the highway and take the side road, driving

    asked by nancy
  48. Math

    What's an example of a situation in which it could be modeled by a linear function, but not by a direct variation?

    asked by Angie
  49. Latin

    Multi Romani copiam aquae in carris spectant. Would this translate to "Many Romans see the suply of water in the carriages?" Thanks, hopefully this will be the last question.

    asked by Jeremy
  50. Math

    how do you do this? i don't get it. The drama club plans to attend a professional producion. From 10 to 35 students will go. There is a one-time handling fee of $3. Each ticket costs $25 plus a $2 surcharge. Write a linear function that models this

    asked by Angie
  51. algebra

    Find an equation of the line containing the give pair of points. (-2, -1), and (-7, -4). The equation of the line in slope - intercept form is y= I 've tried this problem and can not seem to get could please help me.

    asked by Johnnie
  52. english6

    use DEFIANTLY in a sentence and it means to be bodly resistant or challenging

    asked by i got adicted to twilight
  53. Math

    The formula to find the circumference of a circle that has a diameter of 34 inches?

    asked by Agustin
  54. statistics

    I'm working on a statistics project and need to evaluate the expected value using hypergeometric distribution. I am unsure which variable to assign with value in the probability and expected values for the following data: "you work for a manufacturer who

    asked by cp
  55. Making a business plan

    Please check my answer thank you very much Based on the following information below please answer the question that follow. Area A: Brooklyn Brooklyn is a very heavily populated urban area within commuting distance from Manhattan by subway, bus, or car.

    asked by Mari
  56. Science

    Alaskan quake's richter magnitude: 8.6 Taiwan quake's richter magnitude: 7.6 about how much larger was the amplitude of the waves generated by the alaskan quake than the taiwan quake? a. about twice as large b. about ten times as large c. about one hundred

    asked by Angie
  57. Business Writing

    Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe

    asked by Anonymous
  58. english

    What is a scholarly article and how can i find one about the importance of religion in the 1600's, or around the time of Shakespeare.

    asked by jake
  59. year 8 RE - re teachers

    Please could someone help me with my re homework. i need to write an essay.this is the question:- Show how religious beliefs and practices may be connected to the needs and concerns of people living at different times and in different situations. Please

    asked by Kerrie
  60. math

    how do you find the coordinates of the point (x, y, z) on the plane z = 1 x + 1 y + 2 which is closest to the origin

    asked by alice
  61. Phiysics

    A rock is dropped from a hotel and strikes the ground with a particular speed. In order, to double the speed at impact, you would have to drop the rock from the hotel at? I say impossible to determine

    asked by Harold
  62. math

    What is another name for an equilateral quadrilateral? a square?

    asked by Anonymous
  63. college

    The square of an integer is 12 more than the integer. Find the integer

    asked by Jess
  64. Math

    The formula to find the circumference of a circle that has a diameter of 100 yards?

    asked by Agustin
  65. lord of the Flies-journal help English

    Has anyone read the Lord of the Flies by William Golding, well i have not done any journals. I don't understand the book at all. I need help of there is any for me. I think these journals were do today, but i have not got them done. I was hoping for a

    asked by Jessica
  66. math

    name 6 consecutive multiples of 5 which, when added together, make a sum between 340 and 350

    asked by donna
  67. Latin

    Would you mind checking my translations of these? 1. Silvas claras insulae magnae spectatis. You (plural) see the clear forest of the large island. I wasn't sure if I properly did the "of" part. 2. Numerus servorum in insula erat magnus. I said this meant

    asked by Jeremy
  68. College Finite Math

    Suppose for this problem that Pr[E]=13/24 and Pr[F]=5/8 and Pr[(E U F)'] = 0. Finding Pr[E/F] and Pr[F/E]. For this problem I added 13/24 + 5/8 and got 1.17, therefore, I assumed that .17 is the intersection between Pr(E) and Pr(F). I know that to solve

    asked by Rory
  69. spelling

    Write at least 8 words that start with gu and the u is silent. Any help is appreciated!

    asked by Anya
  70. latin

    urbs deleo non potuit. deleo has to be changed to the tense of the sentence. translate the sentence

    asked by gggggggg
  71. science

    Can the principles of relative dating be used to determine the date a rock layer was deposited? Explain your reasoning. I think no because realtive dating doesnt remember the exact date, it only remembers the time at around when it was formed. is that

    asked by Anonymous
  72. Physics

    The chemical potential energy of a certain amount of gasoline is converted into kinetic energy in a truck that increases its speed from 0 mph to 30 mph. To pass another truck the driver accelerates from 30 mph to 60 mph. Compared to the energy required to

    asked by Harold
  73. Algebra 2

    2x(x+2)(x^2 - 2x + 4) set these factors to zero and solve. I would really appreciate it.

    asked by Peter
  74. Algebra (factoring)

    Factor Completely: 1000p^3 - 1 help please

    asked by Adi
  75. ms sue

    thank you very much for your help. i am very grateful.

    asked by donna
  76. re

    what do christians believe about free will? Wha problems does suffering caus for religious believers? thanks

    asked by valerie
  77. social studies

    what was the purpose of the spanish encounting the aztecs and what were the spanish hoping for by making friends with the native americans?

    asked by djgfsfsf
  78. grammar

    Peer editing academic papers require critical-thinking skills and diplomacy.

    asked by Anonymous
  79. Romeo and Juliet Summary

    Could you please read my act 1 summary of Romeo and Juliet and if there are any changes needed please let me know. It doesn't matter if you don't remember the first act but as long as it sounds right to you. Thanks God Bless Sampson, and Gregory who are

    asked by Lala
  80. Science

    Which landscape region of New York is composed of low hills of unsorted sedimens of Cretaceous and Pleistocene age? 1 the Hudson- Mohawk Lowlands 2 the Atlantic Coastal Plain 3 The Champlain Lowlands 4 The Eire- Ontario Lowlands.

    asked by Anonymous
  81. Math

    how do you model this situation with a linear function: A market sells chicken for $2.99 a pound.

    asked by Angie
  82. Math

    if one year to a person is like seven years to a dog, and one day to a person is like one week to a dog, then a dog can have 21 meals everyday. how do you write an equation relating the data in this situation?

    asked by Angie
  83. math

    which of the following have congruent diagonals? square rhombus parallelogram rectangle i believe the answer is the square and rectangle.

    asked by Anonymous
  84. chemistry

    what are the different types of solutions?? is it saturated nonsaturated and supersaturated?

    asked by lyne
  85. Latin

    In what instances do you use the nominative for the word preceding "of the," in oppose to the genitive. For example, in some of my sentences, I have the nominative, like "Forma terrae in Sicilia plana non est." But other times, it is genitive "Curae

    asked by Jeremy
  86. CHEMISTRY

    i don't really understand molality. I know that it is a big concept but could someone explain it a little. the question is how would you prepare a molality solution.

    asked by jacob
  87. statistics

    I'm working on a statistics project and need to evaluate the expected value using hypergeometric distribution. I am unsure which variable to assign with value in the probability and expected values for the following data: "you work for a manufacturer who

    asked by cp
  88. Art History

    Discuss the ways in which Northern Baroque art treats issues of religion and morality. How did the particular social, political, economic, and religious context influence the art produced in Flanders and the Netherlands? In what ways did the art created in

    asked by opanyin
  89. math

    I need to subtract and simplify 2/x^2-6x-27 -1/x^-12-27 I got so far 2/(x-9)(x+3) - 1/(x+9)(x+3) not sure what to do next...please help

    asked by Debbie
  90. college algebra

    simplify |-2.8xy|

    asked by crystal
  91. MGT 255

    Where do the legislative and judical branches come into play with investigation and enforcement of the army corps of engineers?

    asked by Sarah Van Zandt
  92. Art History

    I am looking for references (links, URLs, articles, websites or any other information) to answer this question. "Consider the ways in which art produced in seventeenth, eighteenth-century, and early nineteenth-century (up to c. 1830) Europe was mobilized

    asked by opanyin
  93. year 8 re-Re teachers

    i posted this question before but can`t see it on the page.sorry if it is there. please could someone help me i need to write an essay for re . i don`t really understand what to do. if someone could explain the question id be very grateful.We had a supply

    asked by Kerrie
  94. math

    Rachel likes running she ran over 30 miles five days this week. she ran 8 miles on Monday. How many miles did she run on average during the other four days of the week?

    asked by danny
  95. geography

    what is the capital of burkina faso?

    asked by adriana
  96. Physics

    I'm comparing the "g-force" of a rocket and a race car. My answer for the race car corresponds to the answer in the book but my answer for the rocket is off by 1. The book says I need to add 1 G because the rocket is going upward. So, instead of my answer

    asked by KC
  97. Latin

    The sentence is: Agricolae equi in reginae terra (with a macron) sunt. The answer is "the farmer's horses are on the queen's land." What ending are you supposed to use for something following an 's or s'? Doesn't this sentence use two different endings for

    asked by Jeremy
  98. Working with Parents

    Why must parents be involved in their child's day care program when it's sponsored by the government? A.Parent involvement reduces the cost of day care. B. Parents can judge the abilities of the staff at the center. C. Parent involvement frees the staff to

    asked by Cynthia
  99. 6th grade Science

    What relationship exists between high tides and phases of the moon?

    asked by Alice
  100. math

    Find three positive real numbers whose sum is 52 and whose product is a maximum?????

    asked by alice
  101. 3rd grade

    what is a good site to learn about the great chicago fire?

    asked by hunter
  102. Check+Business

    Indicate whether the market price of a product will most likely go up or down in the following situations and why: a) There is a drought in the Midwest (bushel of wheat) My answer: Go up, becuase the supply is limited b)Strawberries are in season with a

    asked by Bryan
  103. Economics

    What are the three parts of the production model?

    asked by Lester
  104. chemistry

    for my test i have to be able to Be able to determine the final molarity of a mixture of two solutions my teacher said the formula was m1v1 = m2v2/m1+v2 or something like that is that right??

    asked by lyne
  105. chemistry

    does normality measure concentration of solutions??

    asked by lyne
  106. Language Arts

    _________ __________ help you "see" or "envision a play" (drama) you read. If you could help me out with this answer it will be well apriciated, thanks.

    asked by Samantha
  107. maths

    Please help me answer this problem, sorry I cannot draw the shapes mentioned below Q. Add one or more lines to make these shapes rigid. 1) square 2) rectangle 3) issoceles 4) pentagon 5) trapezium 6) octagon Thank you very much.

    asked by brendon
  108. Art History

    2. Discuss the ways in which Northern Baroque art treats issues of religion and morality. How did the particular social, political, economic, and religious context influence the art produced in Flanders and the Netherlands? In what ways did the art created

    asked by opanyin
  109. music

    What is the musical structure (intro, verse etc) of the Beach boy's, woulnt it be nice? Thanks!

    asked by Ronald
  110. NHP

    Was war between Japan and the United States impossible to avoid by 1941

    asked by William
  111. Science

    How are biomes and photosynthesis connected?

    asked by Sam
  112. English

    Is Jinny a female name?

    asked by John
  113. math

    Rectangle A Find the length of the diagonal of the rectangle A Cordinates (-1,-5) (-1,-2) (5,-2) (5,-5) i got the equation d= √(-1-5)^2+(-2--5)^2 and came up wtih the answer of 15, but the answer key is 3√5 The calculator is never wrong SO IM WRONG

    asked by fishycakes
  114. Alegebra

    Find an equation of the line containing the give pair of points. (-2, -1), and (-7,-4) The equation of the line in slope-intercept from is y= what

    asked by Johnnie
  115. Science

    chilean quake's richter magnitude: 8.5 taiwan earthquake's richter magnitude: 7.6 about how much more energy was released by the chilean quake than the taiwan earthwquake? a. twice as much b. ten times as much c. thirty two times as much d. one thousand

    asked by Angie
  116. college algebra

    simplify (5y+1)2

    asked by crystal
  117. Social Studies

    is the production model the same thing as the circular flow model?

    asked by Lester
  118. social civics

    what plan of government is used in chicago heights

    asked by laura
  119. history

    hi i need help getting the message of some cartoons but i can't post them so what i am to do thank you

    asked by evan
  120. Algebra

    how do solve this? 2x-3(x^2 - 5x + 6)+5

    asked by Paulette
  121. Algebra-Can't solve!

    21 OVER X squared MINUS 6x is equal to 1 OVER x(x-6)(x+5). I have to rewrite the ration expression as an equivalent rational expression with the given denominator.

    asked by Estela
  122. algebra 2

    how do you solve 1/3 + 4/x=2

    asked by michelle
  123. reading

    so i have this thing for reading and the question is toy fad of the 1970s:_ _ _ rock anyone know it?? like how am i supposed to no i didn't live back then kk bye

    asked by Lola<3
  124. math

    If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house? the answer is 2 hrs and 24 min. How did they come up with that?

    asked by Kaley
  125. Can someon e please help me (Algebra)

    2x(x+2)(x^2 - 2x + 4) = 0

    asked by Peter
  126. 5th grade

    use three 9's to make 11

    asked by donna
  127. Alegebra

    Given the function K described by K(x)=x+16. find each following. K(0)=16 K(-13)=3 K(-14)=2 K(8)=24 K(c+17)=C+33 Please check this problem see if is right.

    asked by jj
  128. pre algbra

    88*66

    asked by hewan
  129. social studies

    when north carolina decided to reorganize after the hillsborough convention, what change did they make and why? why were some critical of this decision?

    asked by aminah davis
  130. 6th grade

    who made the arch of constantine

    asked by mike
  131. 6th grade

    list two key differenes between anient rome and modern times

    asked by niana
  132. english

    use emarking in a sentence it means to go aboard a vessel, as at the start of a journey

    asked by twilight rocks
  133. PE

    how are physical workout helpful?

    asked by Anonymous