1. Chemistry URGENT

    I'm filling out those missing value charts with atomic numbers, protons, charge, etc. The info i've been given is protons (4), neutrons (5), electrons (2). I got 4 for th eatomic number, and 2 for the charge. The problem is the atomic mass. Once I got 6,
  2. history 1945 and up

    • Final Project: Most Significant Events • Resources: Appendix A • Write a 1,750- to 2,050-word essay in which you: 1. Choose one social, economic, or political topic/issue/theme that you think had the most powerful effect on the development of the
  3. chemistry

    A particular kind of emergency breathing apparatus-often placed in mines, caves, or other places where oxygen might become depleted or where the air might become poisoned-works via the following chemical reaction: 4KO2(s)+2CO2(g)--> 2K2CO3(s)+3O2(g)
  4. chemistry

    A particular kind of emergency breathing apparatus-often placed in mines, caves, or other places where oxygen might become depleted or where the air might become poisoned-works via the following chemical reaction: 4KO2(s)+2CO2(g)--> 2K2CO3(s)+3O2(g)
  5. AP English Language

    Identify the rhetorical device or devices used in each of the following: 1. Finally,brethren, whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is of good repute, if there is any excellence and if
  6. computers

    You are Purchasing a computer for your dads cabinet shop the shop has tons of sawdust and dirt that circulate throughout the building in which the computer would be located what type of input device would be ideal for this environment? a.mechanical mouse
  7. Social Impact of Technology

    VEhrlich’s dire projections differed from those of Malthus in that he applied the principle of geometric progression to: A. vital resources such as oil, copper, and top soils. B. significant climate change variables. C. increasing species die-off. D. the
  8. English/Grammar

    Can someone tell me if I did them correctly? 1. He followed the map to the treasure. 2. Darcy sang the song slowly. 3. They were certain about the time. 4. I called him a sucker. 5. I found the puppy a home. 6. He answered the question incorrectly. 7. The
  9. physics

    An accelerometer is a device that uses the extension of a spring to measure acceleration in terms of Earth's gravitational acceleration (g). What is the approximate acceleration if this accelerometer spring is extended just 0.43 centimeters?
  10. English

    Please check my last post as well. I typed a reply. Moreover if I were to come up with an Original and creative essay title. What should it be. For the topic Banning Cellphones while driving. 1. Who is to blame? 2. Blame the cellphone 3. I just wanted to
  11. chemistry

    From the list of compounds below identify each of their molecules: 1. Propanone C3H60 Mr=58 2. Chromium trioxide Cr2O3 Mr= 152 3.Rubidium Carbonate Rb2CO3 Mr=231 4.Neon Ne: Mr= 20.2 5. Nitrophenol C6H5NO3 Mr= 139 6. Dinitrogentetraoxide N2O4 Mr=92 Please
  12. language arts

    can someone help understand this please? Write an essay in which you analyze the importance of plot events and characters' actions to the development of a story's theme. You might choose "Raymond's Run" by Toni Cade Bambara, "The Story-Teller" by Saki,
  13. 4th grade

    In a fifth grade class of 16 students, one-half of the students arrived at school early,one-fourth arrived on time, and one-eight arrived late. On that day how many were absent? Solve using comparison bars.
  14. Physics

    A Van de Graaff generator is a device for generating a large electric potential by building up charge on a hollow metal sphere. A typical classroom-demonstration model has a diameter of 30 cm. How much charge is needed on the sphere for its potential to be
  15. Chemistry

    A photocell is a device used to measure the intensity of light. In a certain experiment, when light of wavelength 530 nm is directed on to the photocell, electrons are emitted at the rate of 5.1 10-13 Coulombs/sec. Assume that each photon that impinges on
  16. PHYSICS

    An electron gun is a device that sets up an electric field between two plates. The electrons start on the negative plate and thenare accelerated toward the positive plate and out a small hole in its middle if an electron in the gun feels the effect of
  17. chemistry

    A photocell is a device used to measure the intensity of light. In a certain experiment, when light of wavelength 530 nm is directed on to the photocell, electrons are emitted at the rate of 5.1 10-13 Coulombs/sec. Assume that each photon that impinges on
  18. Photo Essay Reflection

    I have to write a reflection on a photo essay about the Great Depression for English class. It(the reflection) is supposed to explain how the photos show the conditions of the Depression and it is also supposed to relate the photos to the life of the
  19. BOOKS.. english

    Explain how John Hersey blended characteristics of fiction and nonfiction in Hiroshima. How does this combination of genres help Hersey convey his feelings about the atomic attack on Hiroshima? Write a short essay that explains your answer. Support your
  20. Pre-Cal

    Recursive Sequences: find a formula for: 1,1,2,3,5,8,13,21 It looks like the Fibonacci sequence. Take the first two numbers and add them to get the 3rd. take the 2nd and third to get the fourth...etc. yeah, but how would i write that into a formula?
  21. Physics helpp

    Newtons 2nd law The force of earths gravity is about 10 N downward. Whats the acceleration of a 15kg backpack if lifted with a 15N force??
  22. Language arts

    So this question wants me to write a paragraph on a topic of my choice but it has to be in either cause and effect order, chronological order, or comparison and contrast order. What would be a good topic to write this on?
  23. A.U.D

    The 2nd And 4th Term Of A G.P Are 8 And 32 Respectively What Is The Sum Of The First And Four Term
  24. tops

    math-what is tops ...2nd grade
  25. To Ms. Sue

    Ms. Sue which 2nd and 3rd sentences?
  26. science-Help!

    What does it mean in the scientific method that the second step is research? I need to write up the 5 steps of scientific method explaining my experiment-how do i do research?
  27. physics

    a device has a 100g wooden shuttle that is pulled along a square woooden rail by an elastic band. the shuttle is released when the elastic band has 9.0 N tension at a 45 degree angle. what is the magnitude of the initial acceleration of the shuttle?
  28. Ethics

    you have examined four approaches to explaining criminal behavior: classical, positivist, structural, and ethical. Select and research one of those approaches. Identify the strengths and weaknesses of your selected approach. Explain whether you think the
  29. english

    I need help with this question about annabel lee. Identify literary elements (mood, imagery, symbolism, contrast, comparison) and explain how they add to your understanding of the poem. Discuss two specific instances in the poem where you see a literary
  30. Chemistry

    What happens in confirmatory test for bismuth? What happens in confirmatory test for copper? What happens in confirmatory test for arsenic? Please help! an you explain in detail. even a link explaining it would help
  31. Government Essay

    My essay question is as follows: Describe the ways the government can effect the economy. Which is the way that provides the most impact on the economy? Why? Can anyone point me in the direction of websites/resources that can help me write this? Taxes on
  32. density and density error (check calculations)

    Calculate the density of earth and its density error d=m/v where m = 6.00*10^24kg and v = (4/3)(pi)(6359000)^3 = 1.07709...*10^21 m^3 therefore d=6.00*10^24/1.07709...*10^21 m^3 d = 5570.5254...kg/m^3 using the sig fig rule, in division and multiplication
  33. World Religions

    The gospel starts off with Jesus talking with some of his followers and telling them about sins. He continues to tell his followers about the sin of adultery. After speaking for a while Jesus gets up and leaves and the people are left confused. Then comes
  34. a.p. calculus help please!

    My a.p. calculus teacher doesn't know how to do this problem (like many others) so he's giving us 5 points extra credit on our test if we can figure it out, but I don't know how to do it: It's as the lim-->infinity (x+sinx)/(x+cosx) We know the answer
  35. I need help starting a Thematic essay, please help

    For Stranger in a Strange Land. I don't know how to start the essay, the paper with the assignment on it says 1. What specific issue(s) does your text address? 2. What is the author trying to say about the issue(s)? (Thesis) 3. What character development
  36. 2nd grade

    DOL Quiz 9/2 1.do you want to visit milwaukee wisconsin 2.dontcha like peanuts raisins and apples 3.mr brown said he came here yesterday 4.her want to read al s books 5.we aint very tired now 6.them boys won t play with us thank u
  37. Social Studies

    I need help on these problems: 1.This water rising device cosists a simple leaver. 2.Which Egyptain word decribes the word Red Land, the desert 3.This Egyptaion god is represented by the Niles croc. 4.Blank is one of the world's oldest civilation and Busch
  38. Language

    1. When developing answers for smaller four. Extended response questions how many sentences should you develop? 2. When developing answers for a larger essay questions how many paragraphs should you develop? 3. What does RARE stand for and why is RARE
  39. Film Studies Essay

    Hi, I am writing a paper about queer spectatorship in the movie The Wizard of Oz. I have to write a critical analysis five page essay. *I want to know if my thesis statement clearly communicates my argument and its significance, and my method and tools of
  40. CIS 105

    Describe one technological device in 350 to 700 words. Include the following: When did it come (or will it potentially come) into existence? What scientific or technological reasoning explains how this potential has been (or can be) be reached? Think about
  41. stats

    For each of the following situations, determine: a) the null and research hypotheses; b) the hypothesis test used (normal curve, single sample t-test, dependent samples t-test, independent samples t-test, ANOVA). For situations 1, 3, 4, and 5, also state
  42. Pysics

    A device for training astronauts and jet fighter pilots is designed to rotate a trainee in a horizontal circle of radius 12.0 m.If the force felt by the trainee on her back is 7.80 times her own weight, how fast is she rotating? Express your answer in m/s.
  43. english

    In which sentence is the meaning of the word astonish expressed A.marley says nothing will surprise scrooge given all that he has seen B. Christmas present asks scrooge to touch his robe C. freds wife expresses her pleasure at the amount of laughter in her
  44. business

    Write a four paragraph answer, citing the text, to – Would you be willing to pay $500 today in exchange for $10,000 in 30 years? What would be the key considerations in answering yes or no? Would your answer depend on who is making the promise to repay?
  45. Research Paper

    can someone tell me what the MLA style is? my textbook is requiring it for my paper but is not explaining it? Here are some MLA websites; the first one is the most thorough and the best: (Broken Link Removed)
  46. Chemistry

    A 94 mL vanillin solution with a concentration of 0.017 mol L-1 was made by extraction from 24.41 g of vanilla pods. Calculate the percentage of vanillin in the vanilla pods. It would be helpful if you could explain to me the process to work out this
  47. English

    "Through her writings, Robert Hemenway wrote in The Harlem Renaissance Remembered, Hurston "helped to remind the Renaissance--especially its more bourgeois members--of the richness in the racial heritage." http://www.zoranealehurston.com/ The site this
  48. english

    Read the two-paragraph analysis passage on p. 177 of the text. Identify the purpose of the writing.
  49. Science

    Uses and advantages of DNA analysis and fingerprints in solving crimes? I'm supposed to compare and contrast.
  50. math analysis

    i need help.. im not really sure how to start. There exist an open interval A=(x,y), x set B, and a function f:A-->B such that f(A)≠ f(x),f(y).. prove
  51. Chem

    what mass of hydrogen was in an unknown compound containing only c, h, and o if 2.65kg H2O was produced by combustion analysis
  52. math analysis

    ((x+3)/(x-5))+(5/(x-3)) Simplify I've done this twice and got it wrong both times I have two more problems similar to this and don't want to continue until I understand how to do it.
  53. english

    I need help determining the key differences between the four types of writing (summary, analysis, synthesis and evaluation).
  54. ib math studies

    i need a internat assesment project idea with something to do with serial killers. It needs to have some statistical analysis.
  55. English

    Can someone please clarify what this means; a summary Analysis of your weekly monthly and semester time demands. Maybe and example of this
  56. english

    what are the layers of analysis for 'if i'll why hath it given me earnest of success?' from act 1 scene 3 MACBETH SHAKESPEARE. thank-you.
  57. Written Analysis

    Analyze my own experience with faulty thinking, in a minimum of three well developed sentences. Sample please.
  58. financial analysis

    an item which may be converted to cash within one year or one operating cycle of the firm is classified as a
  59. chem

    How many moles of O are in 13.0 mol Fe(NO3)3? can you please find this using dymensional analysis and show me how you worked it? Thans
  60. hca 270

    How would you adjust Arcadia Hospital’s 2006 budget in light of your variance analysis?
  61. FINAL PROJECT: COMPREHENSIVE ARGUMENT ANALYSIS

    TWO TOPICS FROM THE OPPOSING VIEWPOINTS RESOURCE CENTER
  62. chemistry

    chemical analysis shows hemoglobin contains 0.34% of Fe by mass. How many moles of Fe wold be in a 100.00 g sample? Thank you.
  63. chemistry

    If your equation of the line for you SAM analysis is y=1x+0.3980, what is the concentration of Mg in ppm in your unknown solution?
  64. Math analysis

    I have a problem that says to Use the laws of logarithms to expand and simplify the expression. ln(x(x + 1)(x + 2)) .. I keep getting ln(x)+ln(x^2+3x+2) but I'm wrong. What im i doing incorrectly?
  65. Health

    I need to do a task analysis about the difficulties that many exceptional children may encounter when attempting everyday activities.
  66. Biology

    Why can the identity of a compound not be determined by cutting out the spot on an autoradiogram and subjecting it to chemical analysis?
  67. Vocabulary

    Criticism A. Analysis B. Summary C. Critique D. Argument A is wrong. Is it C? Please help me Ms.Sue cause your always correct. Am begging for help Please.
  68. Pre-Algebra

    Victoria you helped me with the last problem can you help me again with this one please? 26cm/s=m/min. Convert this using the dimensional analysis.Thank-you.kj
  69. accounting

    Give a 200 to 300 word explaination of the three tools of financial statement analysis.
  70. Sci120: Dependance of man on the enviroment

    bogus analysis using quasi-scientific jargon, but has little or no objectivity
  71. practical chemistry

    perform a qualitative analysis test on ZnSO4 showing ur observations and inference
  72. Biology URGENT!!!!

    What are five characteristics that scientists use to group dissimilar organisms into common groups? List references too please. Thank you. http://faculty.fmcc.suny.edu/mcdarby/Majors101Book/Chapter_02-A_Bit_of_History/02-Explaining-Life-Classification.htm
  73. social studies

    Pookie is listening to music through headphones so that no one else can hear it. When Pookie's sister walks into the room, he says, "Sissy, do you like this song?" even though she cannot hear the music. Pookie's question indicates that he engages in which
  74. math

    Robots are being used with increasing frequency on production lines to perform manotonous task. To determine whether a robot welder should replace human welders in producing automobiles, an experiment was performed. The time for the robot to complete a
  75. Language arts .

    (i don't want the answer) I just need help with this question. What Is the secret to reaching someone with words? Which of the poems---"Concrete Mixers", "The City Is so Big" or "Harlem Night Song"--- best uses words to create a vision or an idea of the
  76. physics

    In an Atwood machine m1 = 2.00 kg and m2 = 6.50 kg. The masses of the pulley and string are negligible by comparison. The pulley turns without friction and the string does not stretch. The lighter object is released with a sharp push that sets it into
  77. Physics

    (a) Calculate the kinetic energy that the earth has because of its rotation about its own axis. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used in the United States in one year
  78. LA

    Be still, sad heart! and cease repining; Behind the clouds is the sun still shining; Thy fate is the common fate of all, Into each life some rain must fall, Some days must be dark and dreary. Which type of context clue helps you understand the meaning of
  79. business finance

    HELP ME GET STARTED ON THIS. I don't know what to do with the estimated demande & probability. This requires managers to estimate demand for the new product and assign probabilities. A range, rather than only one goal will be established. The first
  80. math need asap

    4x+5y=27 x=26-4y 4(26-4y) + 5y = 27 104 - 16y+ 5y = 27 -21y = - 77 21y = 77 y = 77/31 Now, I’m suppose to return to the 2nd equation x=26-4y and substitute 77/31 for x, I don’t understand if the is correct way or how to get the answer for the ordered
  81. Crossword

    This act made it illegal to hold an individual in prison without trial: It has 12 letters and the 2nd letter is A : Habeas Corpus what made parliament stronger than the monarchs ?
  82. religion

    According to the Cow (2nd sura of Qur’an), Muslims a) must not be the aggressor in war b) should avoid violence at all cost c) must formally declare war before attacking d) may not mistreat captives
  83. prasanna high school

    Subject:maths. question: the sum of first 6terms.of an aritmetic progression is 6.the product of 2nd term & 5th term is -80 find the terms of A.P.
  84. math

    a boat travels at 16 knots 1st leg: 6hr @ S63W 2nd leg: 4hr @ N10E find time and bearing back to port
  85. College Chemistry

    previous answer to problem before this one(relevant in 2nd half of this question): 294.472689amu what would be the mass of 1.36 moles of these atoms? Enter your answer here: ____ g
  86. math

    I don't understand factoring. One of my homework questions asks for that. The question is "The area of a rectangular garden is given by the trinomial x to the 2nd power plus x -42. What are the possible dimensions of the rectangle? Use factoring.
  87. physical science

    A baseball diamond has 90 feet between bases. A player hits the ball and runs to 1st, 2nd and stops at 3rd base. The player's displacement is
  88. physics

    thanks for solving my question pasted on dated 18.02.2011 at 10.20.pm.2nd question. a wt lifter lifts a wt of one kg against force of gravity through a distance of .8 mtr. how much cals he will burnt from the food he had taken.
  89. Urgent!

    Project: Data Analysis The following chart lists the average low, average high, record low, and record high temperatures for the month of April in Denver, Colorado. Day Average Low Average High Record Low Record High April 1 32°F 58°F 6°F 78°F April 2
  90. physics

    a student drops an object out the window of the top floor of a high-rise dormitory a) neglecting air resistance, how fast is the object traveling when it strikes the ground at the end of 3.0 s? express the speed in mi/h for a familiar comparison, b) how
  91. Need many responses

    I have a history teacher that wants a paper over my article explaining who , what , when, where, why and how. The fact is these articles are short and two students turn in 3 paragraphs for a summary. . . long summary. and was given another page worth of
  92. Help Somebody please.

    Project: Data Analysis The following chart lists the average low, average high, record low, and record high temperatures for the month of April in Denver, Colorado. Day Average Low Average High Record Low Record High April 1 32°F 58°F 6°F 78°F April 2
  93. English

    In the book Dr. Dolittle is it written in 1st person, 2nd person, or 3rd person omniscent or limited?
  94. additional mathematics

    if the 2nd term and the 4th term of an arithmetic progression are 15 and 23 respectively, find the first term and the common difference
  95. algebra

    Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the Rational Zero Theorem, list all possible rational zeros of the given polynomial. (b) Find all of the zeros of the given polynomial. Be sure to show work, explaining how you have
  96. algebra

    Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the Rational Zero Theorem, list all possible rational zeros of the given polynomial. (b) Find all of the zeros of the given polynomial. Be sure to show work, explaining how you have
  97. UOP

    I do not want answers! The question is: Evaluate the effectiveness of self-determination theory in explaining various behaviors. My question is: Exactly what is this asking for and how would I start the response? Is it asking for the behaviors themselves
  98. Algebra

    Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the Rational Zero Theorem, list all possible rational zeros of the given polynomial. (b) Find all of the zeros of the given polynomial. Be sure to show work, explaining how you have
  99. english

    1.Virtual reality systems can be used to train pilots, doctors, and engineers. These systems are seen most often in video games. 2. a head-mounted display is made of a headset with a screen for each eye. the display connects to a computer. 3. a tracking
  100. Food Chemistry

    Calculate the amounts and pH values for preparing the following acetic acid/acetate buffer solution. 1.) In the first step, If you plan to prepare a 2.00 M sodium acetate in 200.0 mL distilled water, how many grams of sodium acetate should be added in