Questions Asked on
June 17, 2009

  1. chemistry

    Here is the question: Automobile air bags use the decomposition of sodium azide as their source of gas for rapid inflation: 2NaN3(s)-->2Na(s)+3N2(g) What mass (g) of NaN3 is required to provide 40.0 of N2 at 25.0 C and 763 torr? Here is my work:

    asked by Gweedo
  2. Chemistry

    Why is (E)-1,2-diisopropylethene more stable than (Z)-1,2-diisopropylethene? Why are they more stable than 1,1-diisopropylethe? And doesn't the bond angle between the C=C-C carbons increase with (Z)-1,2-diisopropylethene > (E)-1,2-diisopropylethene >

    asked by Sam
  3. chemistry

    Here is the question: A sample of an unknown volatile liquid was injected into a Dumas flask (mflask=27.0928g. Vflask=.104L) and heated until no visible traces of the liquid could be found. The flask and its contents were then rapidly cooled and reweighed

    asked by Gweedo
  4. Chemistry

    The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory. What volume (L) of O2 gas at 25 °C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO3 (s)? Here is my work: V=nRT/P .0611995 mol of O2 x

    asked by Gweedo
  5. Chemistry

    Effusion/Diffusion Chemistry Help!! If 0.0129 mol of dinitrogen tetroxide effuses through a pinhole in a certain amount of time, how much NO would effuse in that same amount of time under the same conditions? (0.0226)

    asked by Capacino
  6. chemistry

    Here is the question: sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas: NaH(s)+H2O-->NaOH(aq)+H2(g) A sample of NaH weighing ________g will produce 982mL of gas at 28.0 C and 765 torr, when the hydrogen is

    asked by Gweedo
  7. Advanced Math.

    Write an equation in slope-intercept form of the line whose parametric equations are x= (1/2)t + (2/3) and y= t – (3/4). t = y + 3/4 x = 1/2(y + 3/4) + 2/3 2x = y + 3/4 + 4/3 2x = y + 25/12 y = 2x - 25/12 A force F1 of 35 newtons pulls at an angle of 15

    asked by James
  8. English

    1. What is her weight? She is 44kg. 2. How much does she weigh? She weighs 44 kg. She is 44kg. (Are they correct?) 3. What is her height? She is162 cm tall. She is 162 cm. She is 162. (Is this OK?) (Are both answer OK? What about the question?) 4. What is

    asked by John
  9. chemistry

    The question: Formic acid when warmed with sulfuric acid, decomposes to water and carbon monoxide. HCHO2(l)-->H2O(l)+CO(g) If 3.85L of carbon monoxide was collected over water at 25C and 589mmHg, how many grams of formic acid were consumed? (This problem

    asked by Gweedo
  10. Finance

    Moore Money Inc. has a profit margin of 11% and a retention ratio of 70%. Last year, the firm had sales of $500 and total assets of $1,000. What is the internal growth rate?

    asked by David
  11. Adv. Math.

    Write a vector equation of the line that passes through point P and is parallel to a. Then write parametric equations of the line. P(-1, 3); a=(-6, -1) MY ANSWER: (x+1, y-3) = t(-6, -1); x= -1-6t, y=3-t P(0, 5); a=(2, -9) MY ANSWER: (x, y-5) = t(2, -9);

    asked by James
  12. Math

    2 coins and 1 six sided cube are tossed. What is the probability of getting two heads and and a four?

    asked by Elizabeth
  13. Macro economics

    5. The problem of determining what goods and services society should produce: A.exists because we can produce more than we need or want. B.exists because there are not enough resources to provide all the goods and services that people want to purchase.

    asked by Johnny
  14. English

    Who is younger than Mr. Pitt? Emily is younger than Mr. Pitt. Who is the youngest of the three? Emily is the youngest. How tall is Emily? She is 162 cm tall. How heavy is she? She is 44 kg. How does she weigh? She weighs 44 kg. Who is the heaviest of the

    asked by John
  15. Writing

    How do I list multiple titles on a title page for an APA paper? For a final, there are 3 separate topics that will be covered, all broadly related, but not enough for a single title. Instructions were to include a single title would these be

    asked by Justin
  16. economics

    Suppose government spending increases in a closed economy. Would the effect on aggregate demand be larger if the Bank of Canada took no action in response, or if the Bank were committed to maintaining a fixed interest rate? Explain

    asked by Anonymous
  17. college algebra

    form the polynomial given,degree 4 and zeros: i, 1+2i

    asked by Anonymous
  18. chemistry

    The problem: Nitrogen can react with steam to form ammonia and nitrogen monoxide gas. A 20.0L sample of nitrogen at 173C and 772mmHg is made to react with an excess of steam. The products are collected at room temperature (25C) into an evacuated flask with

    asked by Gweedo
  19. math

    Use front-end estimation with or without adjustment as indicated to find the value of the expression. 4) 10,656 - 3967 (with adjustment)

    asked by thomas
  20. physics

    I'm given a spring that has a mass of 100 g and a constant of 22 N/m with an A of 5 cm I belive the A is amplitude and I'm asked for the Total Energy which i don't know how to do the max velocity also have no idea how to do and the max force which i don't

    asked by Physics
  21. physics

    A uniform electric field E in the x-direction is produced by an appropriate charge configuration. A thin sheet of charge s per unit area is placed perpendicular to the x-direction at x = 0. If the initial charge configuration is assumed to be undisturbed

    asked by Sandhya


    asked by Anonymous
  23. Algebra

    Find the difference quotient: f(x+h)-f(x)/h for f(x) = 4x-9 and simplify.

    asked by Kate
  24. history

    can someone please help me find this political cartoon i'm looking for, it's about women's rights. it has ARE NOT THE WOMEN HALF THE NATION? written on the bottom and the top says A GOVERNMENT OF THE PEOPLE BY THE PEOPLE FOR THE PEOPLE there are two women

    asked by y912f
  25. Writing

    I need to switch my topic from schizophrenia to something else because I'm having trouble writing on that(as you might have noticed) I just need to know, which is easier to write? A personal, persuasive, or compare/contrast essay? thanks -MC

    asked by mysterychicken
  26. history/times zones

    please check these 1. (a) If it is 12:00 noon, Greenwich time, what time is it in Moscow? 3:00 pm In Denver? 5:00 am 2. (a) If it is 1:00 am in the time zone where you live (atlanta, georgia), what time is it in karachi, pakistan? 11 pm In Guangzhou,

    asked by y912f
  27. English

    1. My voice is deeper than before. (What is the opposite of 'deeper' in this sentence?) 2. The docote said I am in good health. 3. The docor said I was in good health. (Are both OK? What is the difference between them?) 4. All of them can run faster than

    asked by John
  28. Geography

    How long s the amazon river

    asked by Emily
  29. Algebra

    Given g(x)= [6x for 0 < x < or = 2 [3x+3 for 2 < x < or = 8 [5x-4 for 8 < x < or = 12 Determine g(6) Briefly explain

    asked by Alicia
  30. Mathematics (cumulative frequency

    The figures below show to t he nearest minute 80 students waited to be served in a canteen. Waiting time No. of students !@#$%^&.Freq 1-5 4 4 6-10 7 11 11-15 11 22 16-20 18 ? 21-25 22 ? 26-30 10 ? 31-35 5 ? 36-40 3 ? How do i find cumulative frequency???

    asked by Maggie
  31. Algebra

    Given line = 5x – 2y = 10 Find the slope for a line parallel to the given line Find the slope for a line perpendicular to the given line

    asked by Jamie
  32. MATH

    How do i solve the pair of simultaneous equations y=4-2x y=2x^2-3x+1 ?? how do i find minimum value of 2x^2-3x+1 and the value of x for which the minimum occurs???

    asked by Aaliyah
  33. Algebra

    Given f(x) = root x-2 and g(x) = x-7 what is the domain of the quotient function f/g ?

    asked by Bonnie
  34. Social Studies

    The most useful indicator of the degree of democracy reached by a particular society is whether it has a?

    asked by Lisa
  35. Mathematrics

    Each diagram in the sequence is obtained by drawing of a 1 unit square on each side that forms the perimeter of the previous diagram, the 1st digram contains (1) square, the 2nd diagram (4) squares and the 3rd diagram (13) squares, I would like to know how

    asked by Brittany
  36. Math

    Suppose a farmer has 120 feet of fencing to make a rectangular barnyard enclosure. If the enclosure is x feet long, express the area A of the enclosure as a function of the length x. Briefly explain.

    asked by Breanna
  37. statistics

    Mi Lang Motors has in stock three cars of the same make and model. The president would like to compare the gas consumption of the three cars (labeled car A, car B, and car C) using four different types of gasoline. For each trial, a gallon of gasoline was

    asked by lazar
  38. Algebra

    f(x+h)-f(x)/h for f(x)= 4x+9 and simplify.

    asked by Beth
  39. Math

    Write the standard form of the equation of the parabola whose directrix is x=-1 and whose focus is at (5,-2)? a) (y+2)^2 = 12(x+2) b) y-2 = 12(x+2) c) x+2 = 1/12(y+2)^2 d) x-2 = 1/12(y+2)^2 I get A and D? confused!

    asked by Sophie
  40. College American Lit.

    This is what i have so for and the topic sentence i have i don't think its good enough for this paragraph. These great explores received a lot of achievements and honors in American History Thomas Paine, Thomas Jefferson, Benjamin Franklin, and Olaudah

    asked by LaTarial
  41. physics

    just a few quick communication questions... 1-is it possible to have total internal reflection for light incident from air onto water? why? 2-what is the angle of refraction when a light ray meets the boundary between two materials perpendicularly?

    asked by Cynthia
  42. 9th grade

    what are the physical features of niagra falls

    asked by Anonymous
  43. Biology

    Pollen transport in flowers Pollination is the transfer of pollen containing male sex cells from the stamens of a plant to the pistil containing the eggs. Afterward a pollen tube grows through the pistil and sperm nuclei migrate to the egg where

    asked by John
  44. Chemistry

    In a CH3CF2CHF2 molecule, which conformation is more stable and how much more is one stable than the other? I think Anti is more stable than gauche. I don't know why, I just think that a molecule is most stable in it's anti form.

    asked by Sam
  45. English

    2. The doctor said I am in good health. 3. The doctor said I was in good health. (Are both OK? What is the difference between them?)

    asked by John
  46. Algebra

    Given f(x) = ãx - 2 and , which of the following is the domain of the quotient function ? a.(-infinity,2] b.(-infinity,7) U (7,infinity) c.[2,7) U (7, infinity) d.(2, infinity)

    asked by Alex
  47. science

    1) what is the mass of 10 cc of water? 2) why does a block of wood float on water? 3)how and why can density by used to identify an unknown substance? 4) describe the relationship between density, water, an d things that float please help me just need

    asked by matt
  48. Algebra

    When Let f (x) = x^2 – 3x + 8 and g(x) = x – 5 Find Find the composite function of (fºg)(x) and simplify Find (fºg)(2) Find the composite function (gºf)(x)

    asked by Robert
  49. Finance

    Given the following information: profit margin = 10%; sales = $100; retention ratio = 40%; assets = $200; equity multiplier = 2.0. If the firm maintains a constant debt-equity ratio and no new equity is used, what is the maximum growth rate? (Assume a

    asked by David
  50. v-t graph

    how do you convert a p-t graph into a v-t graph?

    asked by Lena
  51. pre calc

    Find a linear factorization of: f(x) = x^3 + 5x - 6. thanks.

    asked by J
  52. English

    Your project design has been approved by the management. The engineering team is about to start production of the new line. You want to make sure this process goes as smoothly as possible. You need to come up with a communication plan to address two of the

    asked by laneice
  53. Chemistry

    In a saturated solution of silver phosphate, the concentration of silver is 4.5 x 10^-4 mol/L. What is the Ksp of silver phosphate?

    asked by Brittany
  54. AED 201

    Identify internal and/or external rewards that impact recruitment and retention of quality teachers. How do such rewards influence recruitment or retention? How might these rewards shift as new accountability-centered teacher reforms are proposed (such as

    asked by Anonymous
  55. AED201

    In your opinion, will teacher reforms (such as comprehensive testing of teachers or requiring ongoing professional development) attract or intimidate individuals from joining the teaching profession? How do the reforms affect your own desire to enter the

    asked by Anonymous
  56. English

    1. I made up my mind to go there. 2. I decided to go there. 3. I determined to go there. (They are all the same, right? By the way, in #1, does 'to go there' modify 'mind'?) 4. I caught a bad cold. 5. I took a bad cold. 6. I got a bad cold. 7. I had a bad

    asked by John
  57. Math

    Can someone please help me with this question? Evaluate the numerical expression on a calculator. Round your answer to the nearest whole number. 34*15 364 ----- * --- 5 52

    asked by B.B.
  58. English

    1. How heavy is he? 2. He is 48 kg. 3. He weighs 48 kg. (Is the question correct? Can we answer the question like #2 and #3?)

    asked by John
  59. chemistry

    Effusion/Diffusion Chemistry Help!!! If 4.83mL of an unknown gas effuses through a hole in a plate in the same time it takes 9.23mL of Argon, Ar, to effuse through the same hole under the same conditions, what is the molecular mass of the unknown gas?

    asked by Capacino
  60. math

    10) A mobile library has 1122 books in its collection. If there are 22 shelves in the library, then how many books, on average, are stacked on each shelf?

    asked by thomas
  61. English

    Thank you forr your help. It's a great place because I can learn correct english expressions. Would you like to look at the sentence again. 1. I made up my mind to go there. (In #1, does 'to go there' modify 'mind'? Then it's an adjective phrase, right?)

    asked by John
  62. Algebra

    Given f(x)=rootsignx-2 and g(x) = x-7 what is the domain of the quotient function? A. (-infinity,2] B. )-infinity,7 U (7, infinity) C. [2,7) U (7, infinity) D. (2,infinity)

    asked by Shelly
  63. math

    the united states emitted 19.5 million of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1t) equals 1,000kg. How many kilograms of NO were emitted to the atmosphere in the united states during 1987?

    asked by Anonymous
  64. English

    1. Why did he start the journey? 2. Why did he start on the journey? (Which one is correct?) 3. The oval said, "You are ugly because you have a missing piece." 4. The oval said, "You are ugly because you are a missing piece." (Which one is correct in the

    asked by John
  65. Chemistry

    Why is (E)-1,2-diisopropylethene more stable than (Z)-1,2-diisopropylethene? Why are they more stable than 1,1-diisopropylethe? And doesn't the bond angle between the C=C-C carbons increase with (Z)-1,2-diisopropylethene > (E)-1,2-diisopropylethene >

    asked by Sam
  66. English

    1. Because Tom got ready for the game, he got up early. 2. Getting ready for the game, he got up early. (Does #1 grammatical? What about #2? Are both the same if they are grammatical?) 3. He ran away seeing me. 3-1. He ran away when he saw me. 4. You will

    asked by John
  67. english

    Hello, I am writing an analytical report on workplace safety. Where can I find same question on this website, like under what category would this be?

    asked by Yana
  68. English Proofread Due before 12 tonight

    1. Rowan opens his essay with a physical description of Miss Bessie. Why are these details important to his purpose? At the beginning of the essay, Rowan used a physical description to grab the reader attention. He thought that if he told how the reader

    asked by Angela
  69. trig

    Is the answer to this problem correct? I'm not sure and I want to make sure I do well on the test. Evaluate the following logarithms given log 4/log a = .321 The answer my teacher gave me was 0.963. What is the reasoning behind the answer?

    asked by Chris
  70. marketing

    Marketing Concepts: Discussing Choices and Ethical Issues,

    asked by scooby9132002
  71. physics

    Certain neutron stars (extremely dense stars) are believed to be rotating at about 0.76 rev/s. If such a star has a radius of 10 km, what must be its minimum mass so that material on its surface remains in place during the rapid rotation? i got

    asked by laura
  72. english

    Hello, please proof read this analytical report. I would also like to know what else I could consider in it. Thanks. Workplace Safety Analytical Report. Introduction Every year more then 15, 000 young people get injured at workplace (stated by Learning to

    asked by Yana
  73. Biology (urgent)

    Sexual reproduction in trees. How does pollen transport in trees differ from flowers. Please help me!!! I can't find an answer for this. thank you very much.

    asked by John
  74. physics

    A coil of N turns is wrapped around an iron ring of radius ‘d’ and cross-section ‘A’ (d > > A). Assuming a constant permeability, mu > > 1 for the iron. Find the following : (i) the magnetic flux as a function of the current ‘i’, and (ii) the

    asked by Sandhya
  75. physics

    A coil of N turns is wrapped around an iron ring of radius ‘d’ and cross-section ‘A’ (d > > A). Assuming a constant permeability, mu > > 1 for the iron. Find the following : (i) the magnetic flux as a function of the current ‘i’, and (ii) the

    asked by Sandhya
  76. physics

    (i) the magnetic flux as a function of the current ‘i’, and (ii) the magnetic flux if a gap of width delta^2 < < A) is cut in the ring

    asked by Sandhya
  77. Physics

    I'm given two cars A and B Car A is 1100 kg and traveling at 11 m/s Car B is 1400 kg and traveling at 15 m/s and I'm asked to fidn the velocity of both is just the net velocity 4 m/s ??? I'm also to find the impulse and how would I do that??? impulse is

    asked by Physics
  78. religion

    what impact does religion have on new zealand????

    asked by sara
  79. social studies

    determine and use ethical procedures aplicable to the inquiry? what does this mean?? for a report on religions. i need 5 ethical procedures HELP!!

    asked by marnie
  80. physics

    a) An infinite number of changes each equal to q are placed along the x-axis at x = 1, x = 2, x = 4, x = 8, . . . and so on. Find the potential and the esoteric at x = 0 due to this set of changes. What will be the potential and electric field if, in the

    asked by Sandhya
  81. physics

    a) An infinite number of changes each equal to q are placed along the x-axis at x = 1, x = 2, x = 4, x = 8, . . . and so on. Find the potential and the esoteric at x = 0 due to this set of changes. What will be the potential and electric field if, in the

    asked by Sandhya
  82. physics

    a) An infinite number of changes each equal to q are placed along the x-axis at x = 1, x = 2, x = 4, x = 8, . . . and so on. Find the potential and the esoteric at x = 0 due to this set of changes. What will be the potential and electric field if, in the

    asked by Sandhya
  83. math

    in a class every boy is friends with exactly three girls,

    asked by brian
  84. Business Research

    Where I cn find information on why written report so important

    asked by Alisa
  85. english

    what techniques does Roy & Coral use in thier play 'Away'.(Michael Gow)

    asked by michael gow
  86. Algebra

    Let f(x) = x^2 – 3x + 8 and g(x) = x – 5 (a) Find the sum (f + g)(x) and simplify the results. (b) Find the composite function (f º g)(x) and simplify the results. (c) Find (f º g)(2) Show some work. (d) Find the composite function of (g º f)(x) and

    asked by Carmin
  87. math...2 word problems

    Two questions: (1) In a class every boy is friends with exactly 3 girls. Every girl is friends with exactly 2 boys. There are only 19 desks (each holding at most two students), and 31 of the students in the class study French. How many students are there?

    asked by M.A.
  88. Business Accounting

    Which is an capital expenditure and revenue expenditure. 1.Overhauled and reconstructed lathe motor to produce more parts per hour. 2. Yearly computer maintenance contract. 3. Construct walls to divide the store offices. 4. Poured a concrete walkway

    asked by Peaches
  89. English

    1. I got up early getting ready for the game. 2. I got up early while I was getting ready for the game. (Is #1 grammatical? Does #2 mean #1?) 3. I helped my friends with teaching them math. (What about this one? Is this also grammatical?) 4. Eating

    asked by John
  90. English

    1. Cheer up, guys. (What other expressions can we use instead of 'guys'? Is 'guys' a rude expression?) 2. Can you make it at ten? 3. Can you arrive at ten? 4. Can you meet at ten? (Does #2 mean #3 or #4?) 5. Finally I made it. 6. Finally I succeeded in it.

    asked by John
  91. English

    1. Talk about the things which are missing in the following pictures. 2. What do you think you lack in? 3. Talk about the things you lack in. 4. Expressing whether a person is sure or not ( Is this phrase good?) 5. Peter should take care of his brother. 6.

    asked by John
  92. Calculus

    limit of (10^n)/(n!) as n->infinity The answer is zero. Can you prove it?

    asked by Sean
  93. English

    Look at the children swimming in the river on the top right side. You shoud not let the children swim in the river by themselves. Look at the two people who are pitching the tent. It is a little dangerous to pitch a tent near a river. If it rains, they

    asked by John
  94. business

    What is the impact of computer graphics on the research report writing format?

    asked by Allison
  95. Algebra

    Given g(x)= [6x for 0 < x ¡Ü 2 [3x+3 for 2 < x ¡Ü 8 [5x-4 for 8 < x ¡Ü 12 Determine g(6) Briefly explain

    asked by Alicia