Questions Asked on
April 7, 2009

  1. Chemistry

    I am beyond desperate. I do not understand how to calculate heat change at all and I have been looking online and reading my book for the last three hours. Below is posted a problem. It would be amazing if someone could work through it and explain each

    asked by Kathryn
  2. Chem

    Consider a solution that contains both C5H5N and C5H5NHNO3. (Kb for pyridine, C5H5N, is 4.0 x 10^-4) (a) Calculate the ratio of [C5H5N]/[C5H5NH+] if the solution has a pH of 4.50. (b) Calculate the ratio of [C5H5N]/[C5H5NH+] if the solution has a pH of

    asked by Fred
  3. Grammar

    1.Which of the following sentences have (unreduced) compound clauses? Briefly explain your answer. a.I like cities with parks and public sculptures. b.Everyday he either burns the toast or overcooks the eggs. c.Neither does he drink nor does he swear.

    asked by Nora
  4. Algebra

    A bowl contains 10 jellybeans (4 red, 1 blue, and 5 white). If you pick 3 jellybeans from the bowl at random and without replacement, what is the probability that exactly 2 will be red? Express in a common fraction.

    asked by Cassie
  5. Algebra

    The sum of three consecutive integers is a multiple of 89 and is a value between 600 and 900. What is the sum of the first three integers? Thank you! :-)

    asked by Cassie
  6. Algebra

    Find the number of full 8 hours shifts that Cleo worked last month. He worked three times as many 8 hour shifts as 6 hour shifts. He worked a total of 180 hours.

    asked by Renae
  7. physics

    A negatively charged balloon sticks to a wooden door. However, an uncharged balloon does not stick to a wooden door. What is the nature of the charge on the wooden door? A. Electrically neutral B. Positively charged C. Conductor D. Lacking protons I am

    asked by sophie
  8. Math

    Please help with this problem! What is the positive three-digit integer that is four times the product of its digits?

    asked by Caroline
  9. Psychology

    Best way to describe biopsychology and its theoretical framework. Thanks

    asked by Julie
  10. psychology

    1 Jamal just recently disclosed to his friend that he's gay. Most likely he's a/an -years-old. A 14 B 16 C 18 D 20 i believe the correct answer is C 2 One of the main reasons girls have more difficulty than boys transitioning from elementary to high school

    asked by nia
  11. psychology

    1 Which statement most accurately reflects the research on adolescent employment? A the number of hours worked affects adolescent well-being B the benefits of employment far outweigh the negative effects C most adolescents report positive effects of

    asked by nia
  12. intro to business

    12. Howie is proud of the fact that workers at his plant earn high wages and have safe working conditions. According to Herzberg's research, these factors would be classified as: motivators. perks. physiological rewards. hygiene factors. 13. One of the

    asked by annoymous
  13. economics

    a firm is planning to manufacture a new product. the sales department estimates the quanity that can be sold depends on the selling price. as the selling price is increased, the quantity that can be sold decreases. they estimate: P=$35-0.02Q where

    asked by jen
  14. math

    1)what equation represents a line that is perpendicular to the line whose equation is -2y=3x+7? 2)if the measures of the angles of a triangle are reprsented by 2x, 3x-15, and 7x+15, is the triangle an acute triangle?

    asked by jerry
  15. Spanish

    Can someone please check my work? Answer the following questions in a complete sentence. 1. ¿A qué hora duermes por la noche? Duermo a las once por la noche. 2. ¿Dónde almuerzas con tus amigos? Mis amigos y yo almorzamos en la cafetería. 3. ¿Cuándo

    asked by Larry
  16. 1st grade

    They all have scales. can i used this as a sentence

    asked by Jane
  17. college

    Having a healthful diet and regular exercise will not only improve your health but also lower health cost. What kind of supporting paragraphs such as details, definitions, analysis division and classification ,process analysis

    asked by Ms lane
  18. Physics

    So I'm having some trouble with this problem.. Is there an equation or is it just a ratio? I'm having so many problems with this one! THANKS! What is the minimum thickness of coating which should be placed on a lens in order to minimize reflection of 531

    asked by Marissa
  19. Health

    I have to do an assignment in my health class but, I'm have a little trouble doing it. I need to write 5 letter responses. I wonder anyone could help me if you can. Assignment: Healthy Decision Making -- Sexual Discussions first question: I don’t want to

    asked by Chimp
  20. Math

    Please help with this problem! Brandon wishes to fence in a rectangular area of his lawn for his rabbit. If the measure, in feet, of each side of the enclosure is a positive integer and the perimeter of the enclosure is 70 feet, what is positive difference

    asked by Caroline
  21. Spanish (URGENT)

    Can someone please check my work? Answer the following questions in a complete sentence. 1. ¿A qué hora duermes por la noche? Duermo a las once por la noche. 2. ¿Dónde almuerzas con tus amigos? Mis amigos y yo almorzamos en la cafetería. 3. ¿Cuándo

    asked by Larry
  22. Physics

    I'm having a problem understanding a question. "If a man exerts a 200N force while pushing a crate 5.0 m across a floor against a frictional resistance of 40N, how much energy was expended by the person pushing?" I can figure out work done on the box and

    asked by Brigid
  23. psychology

    1 Ann, a college freshman, has chosen engineering as her major because her father told her that a degree in engineering would lead to better-paying jobs upon graduation. She is most likely at which of Marcia's identity statuses? A foreclosure B moratorium

    asked by nia
  24. Love Vs. Infatuation Essay please proofread

    Please check my essay and could you please give me a letter grade. I am in 9th grade and we are supposed to write 4 paragraphs on similarites and differences between love and infatuation. Love Vs. Infatuation "Infatuation might lead you to do things you

    asked by Terrie
  25. 5th grade

    dana ordered 1 medium cheese pizza with 8 slices. she ate 2 pieces.write 2 equivalent fractions to show the partof the pizza dana did not eat.

    asked by morgan
  26. math

    how do you convert fractions to decimals and percents

    asked by harley
  27. math

    c+5=18 ----- -3 c=?

    asked by samantha
  28. french

    what does "avoir" mean?

    asked by Angie
  29. Physics

    Which of the following statements is true about electric forces? A. Electric forces cause objects to only attract each other. B. Electric forces cause objects to only repel each other. C. Electric forces cause objects to repel or attract each other. D.

    asked by sophie
  30. Pre Cal.

    Write an equation of the tangent function with period 3ð/8, phase shift -ð/5, and vertical shift -2? Is it y = tan(8/3x + 8ð/15) - 2

    asked by Addison
  31. chem

    The following equation describes the oxidation of an acidified solution of sodium oxalate (Na2C2O4) by potassium permanganate(KMnO4) 5C2O4 + 2MnO4 + 16H2SO4 --> 10CO2 + 2Mn + 16HSO4 + 8H20 What volume of 0.127M sodium oxalate in sulphuric acid will react

    asked by tomi
  32. Writing

    What would be the correct way to cite a website?

    asked by Sam
  33. Chemistry

    Solid sodium carbonate reacts with hydrochloric acid to give sodium chloride,carbon dioxide and water. When writing the ionic equation, do I need to write Na2CO3(s)or do I write CO32-(aq) on the left hand side of the equation?

    asked by candy
  34. Bilogy

    Why you should not use abbreviations or acronyms in the medical field?

    asked by Sharon Walton
  35. geography

    How do people modify the environment by interacting with it through urban development and through leisure activites?

    asked by Peyton
  36. HSM

    Effective program elements

    asked by lisa
  37. Algebra

    What is the positive three-digit integer that is four times the product of its digits? Thank you! :-)

    asked by Cassie
  38. physics

    When two bodies are charged, the total charge before and after charging remains the same because of: A. quantization of charges B. conservation of charges C. law of induction D. Coulomb's law it is B? When a conducting sphere is charged positively,

    asked by sophie
  39. English/Government

    I had my English teacher correct my paper for government, and she marked a few things I wasn't sure of. Like she said "more so" was one word, and I know it's two. Well, anyway, she said this is a run-on sentence, and maybe I just can't see it, but it

    asked by Breanna
  40. science

    where the scarabs used in the humdi to eat the person alive?

    asked by shawna
  41. math

    2a squared + 8a = -12

    asked by Isaac
  42. math

    what is the slope and y-intercept of the line 3x-2y=12?

    asked by matt
  43. physics

    A 15.0 resistor and a 20.0 resistor are connected in parallel. A 5.00 resistor is connected across a 1.00 10^2-V battery. What is the current flowing through the 20.0 resistor? A. 1.21 A B. 3.15 A C. 5.00 A D. 6.84 A I don't think it's C....

    asked by sophie
  44. Nutrition of the young child

    Following the nutritional label on a jar of peanut butter, you determine that 1 once of the peanut butter contains 115 calories and 9 grams of fat. Whst percent of the calories come from fat. A.30 B.40 C.70 D.80 I chose C as my answer. Can someone check my

    asked by Cynthia
  45. Latin

    My book says the setence "litteris victoriam nuntiant" means they report the victory by means of a letter. Why is letter pluralized in this sentence? Thank you.

    asked by Meghan
  46. medical billing and coding

    differentiate between the official coding guidelines for using v codes in an inpatient and outpatient setting.

    asked by ann
  47. Math (percentages)

    I transferred $1.50 to a friend on paypal. The friend was charged a $.34 cent fee and received only $1.16. How much of a percentage was the friend charged to receive the transfer? I have tried doing: (100 * .34) / 1.50 = 22.66 and (1.16/1.50) * 100 = 77.33

    asked by Ty
  48. 10 th grade math

    3(4^2 - 4)

    asked by Jalyn
  49. medical billing and coding

    Discuss coding for obstetrics, including items covered by the global fee for antepartum and postpartum periods of normal pregnancy.

    asked by ann
  50. social studies

    Does anyone know of some good websites that I could find how to build a medieval castle for my grade four project on medieval times.

    asked by sammi
  51. 6th grade math

    i need some help with determing surface areas of rectangular solids please. thank-you

    asked by Kenny
  52. 4th grade

    Does anyone know of some websites that I could use to help build a medieval castle for my project.

    asked by sammi
  53. 10th grade math

    (4x^4-3x^3-x+3) + (2x^3 + 3x - 4)

    asked by Amber
  54. 10th grade math

    (-2x + 6)(x + 4) 4(13 - 6) - 4^2 + 3^3

    asked by tylor
  55. Latin

    I'm just a little confused about this translation my book gave me. My book said "Litteris victoriam nuntiant" means they report the victory by means of a letter. Wouldn't this be they report the victory by means of letters? Am I incorrect or is the book?

    asked by Meghan
  56. science

    The Tundra is a biome that can be found around the arctic circle. The Tundra includes northern Asia, North America, and Greenland. The word Tundra is from the finnish word for barren or treeless land. The Tundra has very poor soil due to permafrost,

    asked by Sam
  57. college math

    how would you find all prime numbers that divide 50! (factorial)?

    asked by Laura
  58. English!!

    I need help!! what is the blank? change: variable:: move:_______ private:public:: major:_______ ancient:old::______:new go:went::_____:rose tree:forest::star:galaxy please reply!!

    asked by Carolina
  59. physics

    a 0.40kg ball is thrown vertically upward with a speed of 30m/s. The ball reaches a height of 40m. What is the energy dissipated due to air friction?... please help i don't know what to do:(

    asked by julie
  60. Writeacher please read

    I posted something below after my essay.

    asked by Terrie
  61. Social Studies

    What are examples of capital resources?

    asked by SMS
  62. social studies!!

    I need a sentence using two of these three words!! proprietor, representative, and treaty!! HELP!!

    asked by Carolina
  63. math

    linear equations parallel to each other have same slope. what about perpendicular lines??

    asked by Angie
  64. science,details about fish HELP PLS!!!!!!!!

    Why are fish important? how do they help balance the ecosystem? how can we protect fish? what does overfishing affect other than fish? Pls and thank you

    asked by Jan
  65. ENGLISH GRAMMAR~!~!~!~!~

    when do you use affect and when do you use effect?

    asked by anon
  66. 1st grade

    He doesn't wants to read Snow White. Is that a sentence

    asked by Jane
  67. algebra

    x squared-(x+1)squared+5

    asked by anna
  68. algebra

    x^6-64 How do I factor this problem? The answer I'm supposed to get, I can't figure out how to get there.

    asked by claire
  69. chem

    NaOH + HCl ------> NaCl + HOH I need to figure out the quantity of heat in this reaction. The volume of the solution is 150 mL (NaCl + HOH). The inital temperature is 26 degrees celcius and the final temperature is 23 degrees celcius. That's all I know.

    asked by Lena
  70. physics

    In a series current, each circuit has the same: A. current B. voltage C. capacitance D. resistance If a resistor is added to a series circuit, the equivalent resistance: A. increases B. decreases C. remains the same D. becomes zero

    asked by sophie
  71. 7th grade

    what is the answer for 3 times a number plus 15 divided by 2

    asked by sandy
  72. Algebra

    jon can type a report in 9 hours, nick can do the same job in 5 hours. How long would it take to type if they did it together?

    asked by Josh
  73. 10thgrade math

    (4x^4-3x^3-x+3) + (2x^3 + 3x - 4)

    asked by amburrr
  74. work (physics)

    a 25 kg object is accelerating from rest to a distance of 6 m in 4 seconds across a level floor. The friction is 3.8 N - what is the total work........ i started off by trying to find fa but it seems to give me an absurd answer.. maybe if u could help me

    asked by marisa
  75. Science

    What is botox made from?

    asked by Tara
  76. 4th grade

    what is a tropical location and high precipitation level have produced the worlds largest ___________ along the ______________.

    asked by kelly
  77. algebra

    I need help with these problem someone told me that you was not helping them. Please help me!! 5/4x +1/8x=11/8 +x The solution is x= Solve by the elimination method. 4x +5y=5 8x +10y=10 What is the solution of the system.

    asked by Elaine
  78. Spanish (URGENT)

    Original..... Invierno tardio No es increíble cuanto ven mis ojos: nieva sobre el almendro florido, nieva sobre la nieve. Este invierno mi ánimo es como una primavera temprana, es como un almendro floroido bajo la nieve. Hay demasiado frío esta tarde en

    asked by Larry
  79. algebra

    x^2 - (x+1)^2 = 5

    asked by anna
  80. Spanish #2

    Can someone check my sentences? Write four sentences about what you do when you go to a restaurant. Remember to mention how you go, what you do and what you order. Voy a la restaurante en coche. Yo pedir el pollo y la ensalada a comer. También yo pedir

    asked by Larry
  81. 6th grade math

    Max kept records about where he spent his money. At the end of the year, he announced that he had spent 1.2 of his income on food and rent, 1/2 of his income on clothing, 1/12 on entertainment, and had saved $1400. Mike said he spent 1/2 of his income on

    asked by Andre
  82. Math

    Solve by the elimination method. 5r-3s=2 3r 5s =42 r=-40 is this right. 4x+5y=7 5x-4y=5 Decide whteher the pair of line is parallel, perpindular, or n I said is was parallel. Tell me if this right.

    asked by Mary jo
  83. English

    What are the different kinds of introductory paragraphs, paragraph transition, and paragraph conclusions? Please help. Thanks in advance. :)

    asked by becho.becho
  84. Math

    Please help with this problem!! Assume a, b and c are positive integers such that c cubed=a squared-b squared. If c is the least odd integer for which this is true, what is the least possible value of b?

    asked by Caroline
  85. earth science

    If the temperature at the surface is 230 C, what is the temperature at a height of 2 km under average conditions (when temperature decreses with height by 6.50 C per km)?

    asked by sam gordi
  86. Chemistry

    I just did an experiment on the enthalpy of combustion of different alcohols, and for my report, I've written that the condition of the wick is a source of random error, but i can't seem to explain it. I've written that it affects the rate of burning of

    asked by TP
  87. Math

    Please help with this problem! Planet Pemdas is a perfect sphere that does not rotate. If a rocket flies in a path following the circumference of Pemdas, and maintains a constant altitude of 25,000 feet above the surface for one orbit, how many more feet

    asked by Caroline
  88. social studies!!

    What William Penn's and Benjamin Franklin's contribution to the Middle Colonies?

    asked by Carolina
  89. O-Chem

    What is EDTA exactly and why do we use it in lab setting? I researched but having a little hard time understanding the concept. thanks

    asked by Matt
  90. Chemistry

    so i got a test and like usual my teacher didn't teach me half of the stuff that's going to be on it so he gave us a pretest of what is going to be on it and an answer key and i got several questions 13.) what is the pH of a formic acid if the

    asked by Chemistry
  91. 7th grade english

    what are the elements of writing

    asked by Hunter Dutton
  92. Chemistry

    me again 8. You are given two beakers, A and B, with colorless liquids in htem. What two tests would you perform to determine which one is a strong acid and which one is a weak acid? Be specific with the test and the results as well as how you would

    asked by Chemistry
  93. economic

    you buy only apples and bananas. Your budget is such that you can purchase 3 apples and 4 bananas or 9 apples and 2 bananas. Write down the equation for the budget line with bananas on the y-axis. Is that equation unique

    asked by Anonymous
  94. social studies

    Who started trial by jury in ancient Greece

    asked by Mary
  95. Latin

    To translate the sentence, "I will not be the first to fight" is it "Non ero prima pugnare" or is it "non ero primum pugnare"... in other words, do I translate "I" as feminine because I am a girl, or do I translate it as neuter because it is speaking

    asked by Annie
  96. science

    Which life-form was most abundant 250 million years ago? a. dinosaurs b.reptiles c.bony fishes d.trilobites I think it's d.

    asked by Angie
  97. art

    How is art used to form public opinion in society?

    asked by help
  98. Physics

    A 69 kg roller blader, is on a frictionless surface at rest, he then tosses a 4.0 kg rock that has a velocity given by v=3i+4jm/s, the axes are both in the horizontal plane. Find the x component and y component of the subsequent velocity of the roller

    asked by Jacob
  99. calculus

    Find the cubic function f(x)=ax^3+bx^2+cx+d that has a local max value of 3 at -2 and a local min values of 0 at 1. I have no idea how to solve this. Could you please give step by step answers and explanations for the steps. Thanks!

    asked by Riley
  100. Business

    Can anyone help me with this please? Describe how you might conduct a stakeholder impact analysis of Scenario 1 of Appendix B using each of the stakeholder impact analysis approaches: moral standards, 5-question, and Pastin’s approach. This is the

    asked by Tim
  101. Math

    How do you find cos15

    asked by Katie
  102. Math

    What is the difference between an equation and an expression

    asked by Sue
  103. physics

    What particles are made with two quarks, and what restrictions are there on the two quarks in it? I'm pretty sure it's mesons, but I don't know the restrictions. What particles are made with three quarks and what restrictions is there on the three quarks?

    asked by Linn
  104. vocab

    Which word that satisfactorily completes the following question. she was indeed fortunate to find herself working under a person who was (notorious,hospitable)to her novel idea

    asked by john
  105. English Paper

    We're currently writing a paper this week , so I need help writing my paper . I just want to know how to start it . Like how to get a good "Pop culture" in the introductory paragraph ?

    asked by Leyla
  106. I just need your IMAGINATION

    What's a good creative title for overfishing?

    asked by Anon
  107. health care

    how are the processes of blood clotting, immune response, allergic reaction, and hormone release interrelated?

    asked by patti
  108. english

    What's a thesis statement

    asked by Anon
  109. Literature

    I was here yesterday and I had gotten help but I still need to find similarites between love and infatuation. Thanks for your help. You can use your own thougts or you can give me a link .

    asked by Terrie
  110. Math

    I need to research the following fractal-related topics and find enough information to write five sentences. a. a Peano curve b. the devil's staircase c. self-similarity d. space-filling curve I also need to find out how the concept of fractals is applied

    asked by Anna
  111. college al


    asked by elbowjo
  112. geometry

    ok i don't understand the whole sine cosine and tangent its confusing and i hate it

    asked by morgan
  113. business

    why do firms outsource some of their functions?

    asked by Bryan
  114. Maths

    Two pairs of touching sides are the same length. The diagonals meet at right angles. Opposite sides are not parallel. The diagonals bisect each other, but are different lengths. The diagonals do not meet at right angles. Angles are not right angles. Please

    asked by Casey-Jo
  115. physics

    You have a mass m hanging on a string of length L. You pull the mass to one side so that the string makes an angle theta with the vertical, then you let go of the mass. For the instant after you let go, how do you calculate the tension in the string? I

    asked by kayla
  116. accounts tax

    what is the VAT payable on five sets of cutlery each valued at £24.95?

    asked by lisa
  117. accounts tax

    what is the correct VAT payable for a hi-fi unit costing £255.55 less trade discount of 10 and cash discount of 4 if paid within 14 days-delivered by courier at an agreed charge of £25.00 the courier charged the supplier £19.50?

    asked by lisa
  118. college al

    r/3+6/3=r/6+8/6 These are fractions with the /

    asked by elbowjo
  119. Accounting

    Accounting 260 Locker Room talk Ethics Stakeholder Impact Analysis. Analyze the case using stakeholder impact analysis and the philosophical approaches to ethical decision making. What should Albert do? Albert Gable is a partner in a CPA firm located in a

    asked by shelli
  120. AP Environmental Science

    A new trend in environmental susatinability is reclamation. Reclamation is taking any disturbed areas and trying to converth them back to natural state. Describe the costs, impacts, and success in reclaming a gold mine.

    asked by Anna
  121. Business

    I think a company can't really make a-lot of profit if they spend no money on quality controls because,"quality control is the more traditional way that businesses have used to manage quality. Quality control is concerned with checking and reviewing work

    asked by annoymous
  122. math

    4 is 1/8 of the set.

    asked by Mike
  123. Physics

    Calculate the angular and linear velocity of the surface of the sun and the earth around the sun.

    asked by Christina AAAA
  124. Accounting-business

    Can anyone help me with this please? Describe how you might conduct a stakeholder impact analysis of Scenario 1 of Appendix B using each of the stakeholder impact analysis approaches: moral standards, 5-question, and Pastin’s approach. This is the

    asked by Tim
  125. Accounting

    Can someone please help me with this because I am lost. In what circumstances would each approach to stakeholder impact analysis (moral standards, 5-question, and Pastin’s approach) be most useful? Generalize about the approaches and describe when each

    asked by Tory
  126. busniess

    What are the four functions of management?

    asked by todd
  127. fractions

    Ok I'm a Mom trying to figure this out to help my foster daughter it's harder because english is her second language. please explain how you get the answer I just could never grasp fractions and I want to help her thanks also I posted the first one but

    asked by Karianne
  128. Chemistry

    Would you mind checking these mole/unit conversion problems over? I understood them in class today, but that was hours ago, so now I need to start all over again. How many moles of GaBr3 are in 983 grams? I got 983g times 1mole/309.42, which equaled 3.18.

    asked by Meghan
  129. college

    what is the result of an erroneous coding for a neoplasm

    asked by ann
  130. HSM

    Stages of program planning,initial idea through the evaluation stage

    asked by lisa
  131. medical billing and coding for college

    differentiate between the official coding guidlines for using v codes in an inpatient and outpatient setting

    asked by ann
  132. social studies

    I need help with My Social studies hw!! Im in 6th grade ive read my book and cant find anything!!!!

    asked by Brianna
  133. social civics

    in what way could putting a traffic on foreign shoe imports result in a disadvantage to the united states economy or united states consumers i say we would not be able to buy them

    asked by laura
  134. English

    1. I'm in the English drama club. 2. I'm on the English drama club. (Which one is correct? Are both OK? 3. I am in the quilt club. We make quilts with cloths and strings. 4. I am in the courses and careers club. We study jobs and learn what to do to get

    asked by John