Newest questions posted by cat
  1. chemistry

    find the limiting reagent for each set of reactants 4NH3(g) +3O2(g) = 2N2(g) + 6H2O(l) if you have 7.00 mol NH3 + 5.00 mol O2
  2. Riddle pumpkin

    What is the best thing to put in pumpkin pie??
  3. Physics

    a cube has six faces and twelve edges. you start at one corner,are allowed to move only along the edges and may not retrace your path along any edge. Consistent with these rules, there are any number of ways to arrive back at your starting point. For
  4. Geometry

    Ok so, I have to find the surface area of a triangular pyramid which is, S=B+1/2Pl and so far I've got S=10+1/2(8.7x6.7) which equals 39.145, is this correct? I just want to double check, if not, then I'd really appreciate some help!
  5. Social Studies

    Which of the following is an example of what people experienced during the great depression? More American's send their children away from home to get an education People cut their dining out and moving to only once a week Millions become jobless,and many
  6. Social studies

    Which of the following best summarizes Hoover's initial response to the great depression? He believed the government should provide jobs for all Americans He believed people should have invested more wisely He believed private charities would meet all of
  7. statistics

    A new process is started and the sum of the sample standard deviation for 20 subgroups, of size 8, is 750; Compute, to 3 decimal places, the process standard deviation, σ0:
  8. History

    How did the great depression begin? Investors began to worry the boom would end and began selling stocks. Investors paid back their loans too late to help the economy People were not willing to sell their stock Farmers had to sell stock pay for farm
  9. math

    Find a cubic polynomial p(x) so that the solution of p(x) ≤ 0 is [-2,1] or [4,∞). Is your polynomial the only one that gives this solution? Explain.
  10. science plz correct me

    Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it
  11. social studies

    which two of the following characteristics are necessary for a state to exist? territory** judiciary sovereignty constitution federal system organized government** separation of power
  12. science

    according to ohms law what is the resistance of a lightbulb if that applied voltage is 21.0 V and the current is 3.0 amps? 24 ohms 7.0 ohms** 18 ohms 3.0 ohms
  13. Science 7

    Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it
  14. Science 7

    1. A student studying a circuit diagram of a lightbulb, battery, and a switch correctly identifies it as a closer circuit. In this diagram, The lightbulb would be a. an insulator b. on*** c. disconnected d. off 2. The focus of gravity on an object on the
  15. social studies

    Asha lives in a nation that has a legislature and a prime minister. Citizens in her country vote in elections to elect their legislative representatives. Then parliament appoints the prime minister. 1: Does Asha's nation have a limited or an unlimited
  16. Science

    Imagine Two Artificial Satellites Orbiting Earth At The Same Distance. One Satellite Has A Greater Mass Than The Other One? Which Of The Following Would Be True About Their Motion? A.The satellite with the greater mass is being pulled toward Earth w/ less
  17. Science 7

    a student made an electromagnet using a battery electrical tape and metal wire. she wanted to see what the effect would be if she switched the side of the battery she connected each end of the wire to. which of the following would be a correct conclusion
  18. Social studies 9

    Imagine a political candidate, Maria Gutierrez, Gutierrez has appeared on television as part of a multi-candidate debates. However, she is also invited often to discuss and debate views by herself on a popular news channel. 3. How will the news channels
  19. Math (Algebra)

    Train A left the station traveling 60 miles in 1 hour. 30 minutes later, train B left the same station traveling 75 miles in 1 hour. How many hours will it take for the two trains to meet up? I know that a formula, D=V*T, might be useful while solving the
  20. History 9

    11. What was the impact of Minutemen during the revolutionary war? A) they were able to resist British forces using the same tactics that British soldiers used B) they set up signals to warn the regular american army whenever British soldiers were
  21. History

    7. What was significant about the role of the green mountain boys? Select three answers. A) they launched a surprise attack on fort Ticonderoga and defeated the British*** B) they assisted Washington and his troops in launching a suprise attack in
  22. History

    6. What effect did the capture of fort Ticonderoga have on the fighting in Boston between the American colonists and the British? A) the British left Boston when they saw the forts military weapons positioned on Dorchester heights**** B) the British
  23. English

    Write an informal personal letter to a friend down his invitation for a birthday party.
  24. Chem

    1) HCL 2)H2S 3)HNO3 4) H2SO4 5)H2O contains the lowest percent by mass of hydrogen.
  25. check english answers please??

    Match the definition with the appropriate word. A. an appeal to logic B.the emotion that a speaker demonstrates towards his or her subject appeal to the credibility of the speaker appeal to the emotion E.devices in a speech that seek to convince
  26. LA

    Poets use imagery and words with different connotations and denotations. In a paragraph, define and provide an example of imagery, connotation, and denotation. Then, explain how poets use these elements to contribute to tone in a poem. Support your answer
  27. Math \ algebra

    The table shows the amount of money made by a summer blockbuster in each of the first four weeks of its theater release. Which graph could represent the data shown in the table? A table showing the week and the money made; week 1, $19,600,000, week 2,
  28. biology

    hi. I would like to know in reference to wind and insects moving pollen to different species of flowers at the same time, why doesn't pollen in one species fertilize egg of a second species thus forming hybrids?
  29. Chemistry

    When 6.0L of H2 reacts with 2.0L of N2, 4.0L of gaseous product are formed. All volumes of gases are measured at the same temperature and pressure. What is the formula of the product? Hint: Assume all reactants are consumed.
  30. math

    Each edge of the cube measures 24 inches. Raj wants to cover the top and four sides of the table with ceramic tiles. Each tile has an edge length of 6 inches. How many tiles will he need?
  31. social studies

    americas industrial revolution began to take root in A) New England B) the west C) the Middle Atlantic D) the South
  32. Woodrow Wilson

    Can someone help me figure out the views of Woodrow Wilson? I know he was Pro Imperialists but does anyone have any other info on him and his views?
  33. World History check my answers

    Please check my answers. I put a star* by the one i chose. 1. What innovation is Henry Ford credited with pioneering? a. Combustion engines b. Assembly line* c. Increasing workers’ pay 2. Identify one of the troubles the Coolidge administration faced
  34. math

    Aaron Grider buys a home for $120500. After a 15% downpayment, the rest is financed at 8% interest for 9 years. What equal quarterly payments will be required to amortize this mortgage loan? What is the total amount of interest Aaron will pay on the loan?
  35. damped oscillator

    How do I show mathematically that Q is equal to the following in a damped oscillator? The quality factor Q of a damped oscillator is defined as Q=2pi τ(tau) /T. Show mathematically that Q is equal to 2pi*)energy of oscillator/energy lost by oscillator
  36. Math

    A particle starts at the origin and moves along the curve 4y = x^2 to the point (4, 4). If the y-component of its acceleration is always equals 2 and the y-component of its velocity is initially zero, find the x-component of its acceleration.
  37. Sicience

    Calculate the density of a liquid that has a mass of 20g and a volume of 315.4ml
  38. statistics

    If I am using a venn diagram, the probability that event A occurs or event B occurs but not both. What is my formula? I am soooo very confused..
  39. statistics

    Joe owns a clothing store, he keeps 15% of the shirts on display in the window. he knows if a shirt is in the window there is a 70% chance of it being sold that week. The probability that the shirt in the display window will be sold within the week is?????
  40. statistics

    the probability of NOT drawing either a club or a queen from a standard deck of 52 cards is???
  41. statistics

    How do I find the probability of an event A occurring or an event B occurring but not both? How do find this equation with a Venn diagram?
  42. statistics

    Jesse took two data points from the weight and feed cost data set and calculated a slope, or average rate of change. A rat weighs 3.5 pounds and costs $4.50 per week to feed, while a Beagle weighs 30 pounds and costs $9.20 per week to feed. Using weight as
  43. statistics

    Jesse put the heartbeat and lifespan data into a statistical software program and found the coefficient of determination to be 64%. The value of the correlation coefficient is __________.
  44. statistics

    Using the regression equation ŷ = .3 + .12x, the predicted weekly food cost for a hedgehog weighing 1.3 pounds is __________.
  45. Goverment

    the president can choose to rid of democracy a. true b. false
  46. statistics

    In blackjack with one card dealt already? What is the probability it is a Ace, given that it is not a face card?
  47. statistics

    If there were fifteen cards left in the deck, and five were diamonds, what is the probability that two cards dealt (without replacement) would both be diamonds?
  48. algebra

    Simplify -14x^3/x^3 - 5x^4 it too hard for me to understand
  49. math

    dave throws loose change in to a cup an takes it out every 2 weeks this time it is all nickels and dimes there are 7 times as many dimes as nickels and the value of dimes is $5.85 more than the value of the nickels how many nickels and dimes does dave have
  50. math

    The length of a rectangular piece of cardboard is three more than twice the width. A square 2 cm on a side is cut out of each corner. The sides are folded up to form an open box. if the volume of the box is 120cm^3, what were the original dimensions of the
  51. math

    the width of a math textbook is 0.75 inches. how many math textbooks can be placed standing up on a shelf that is 18 inches wide
  52. Calculus

    Find the general solution of the DE. Write your solution explicitly. y'=(y^(2)+y^(2)cosx)^2
  53. math

    Sam purchased 625 square feet of carpet for his bedroom, which is shaped as a square. What are the dimensions of his bedroom? Each side of the bedroom has a length of 25 feet. Each side of the bedroom has a length of 156.25 feet. Each side of the bedroom
  54. Math

    Find the slope of the line L1 given that L1 is perpendicular to L2 and L2 passes through (-3,-1) and (-5,7). How do you do this kind of problem
  55. math

    Cecily Made a poster in the shape of a quadrilateral. All the angles and sides of the poster are congruent. Which of the following names the shape of Cecily's poster Square (a) rectangle (b) pentagon (C) trapezoid (D)
  56. LA

    which of the following best relates to these details in "winter"? frogs burrow the mud/ snails bury themselves
  57. Science

    The Ka for the H2PO4–/HPO42– buffer is given by the equation: Ka= ([HPO4^-2]gamma [H^+])/[H2PO4^-]=10^-7.20 What is the pH of a 2:3 mixture of H2PO4– to HPO42– at 0.10 M ionic strength? (See the table for the activity coefficients.) I just am not
  58. Math

    Mr. Jefferson has 20 students in his class. He wants to send 4 of these students to pick up books for the class. How many combinations of 4 students can he choose? A)5 B)80 C)4845 D)116,280
  59. Physics

    A 0.15kg baseball pitched at 30 m/s is hit on a horizontal line drive straight back at the pitcher at 46.0 m/s. If the contact time between bat and ball is 5x10^-3 s, calculate the force (assumed to be constant) between the ball and bat. [Hint: impulse!] I
  60. Consumers Math

    I don't want the answer to this question, but if someone could please tell me how to work it out, that would be great and I could finish it on my own. Thank you very much:) Question- Your station charges $15.95 for an oil change. As a promotion you sell
  61. world history

    Its about 1569 map Of the World Compare a modern Mercator Projection of eastern North America with Mercator's map. How are the two maps different? How are they similar?
  62. College Chemistry

    calculate the initial concentration of SCN- ions and Fe3+ ions when a solution was prepared by mixing 3.00mL of 0.00280M KSCN, 6.00 mL of 0.250M Fe(NO3)3 and 16ml of 0.050M HNO3.
  63. physics

    A) A hot air balloon has just lifted off and is rising at the constant rate of 1.70 m/s. Suddenly, one of the passengers realizes she has left her camera on the ground. A friend picks it up and tosses it straight upward with an initial speed of 10.4 m/s.
  64. physics

    a)Two cars are traveling along a straight line in the same direction, the lead car at 24.5m/s and the other car at 29.6m/s. At the moment the cars are 41.6m apart, the lead driver applies the brakes, causing her car to have an acceleration of -2.00m/s2.
  65. physics

    A model rocket is launched straight upward with an initial speed of 47.7 m/s. It accelerates with a constant upward acceleration of 2.02 m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by the rocket? How long after
  66. Calculus

    Can some one please explain this problem to me? Find lim x->0 (sin5x/sin7x)
  67. science

    Compare and contrast the reproduction of mosses, ferns, gymnosperms, and angiosperms
  68. science

    why is sexual reproduction better than a sexual reproduction for ensuring the survival of a species in a changing environment?
  69. physics

    Using a small pendulum of length 0.171 m, a geophysicist observes that it completes 1 cycle every 0.833 s. What is the value of g at his location?
  70. Chemistry

    At 25C only .0190 mol of the generic salt AB2 is soluble in 1.00L of water. What is the Ksp of the salt at 25C? AB2A^2+ + 2B^- I took the .0190 mol and doubled it and multiplied by .019 again and got 6.859x10^-6 and got it wrong what should I do? Please
  71. Chemistry

    Complete this table of initial and final concentrations HF(aq) + KOH(aq) KF(aq) + H20(l) Initial concentrations: HF-2.0M KOH-1.0M KF-0M Final Concentrations? how do I set this up to figure out the final concentrations? How can I tell which of the following
  72. Physics

    a person jumps from a ledge 3.7 meters and when he drops to the ground it takes .7 meters for him to stop what is the force applied to his body
  73. Chemistry

    How would you prepare 50.0 mL of 2.0 M H2SO4 starting with concentrated sulfuric acid (18M)?
  74. Chemistry

    How would you prepare 50.0 mL of 2.0 M H2SO4 starting with concentrated sulfuric acid (18M)?
  75. pre calculus

    Hi, I am having a problem trying to find and understanding how to find the extreme values. I have a problem which I can't do. Will someone please explain for me how to do it. I would like to be able to do other similar problems. This is the problem I am
  76. pre calculus

    Hi, I am having a problem trying to find and understanding how to find the extreme values. I have a problem which I can't do. Will someone please explain for me how to do it. I would like to be able to do other similar problems. This is the problem I am
  77. physics

    An aircraft in straight and level flight is in a state of horizontal equilibrium. It is flying 120 km/hr in the direction 110* and not correcting for wind. The wind is blowing at 60 km/hr in the direction 340*. Determine the speed and direction the
  78. Ap bio

    Triiodobenzoic acid (TIBA) inhibits auxin transport. If a tiny agar bead containing TIBA were placed off center on the tip of an intact coleoptile, which way would the coleoptile bend: toward the side of the bead or away from it?
  79. physics

    two forces f1 and f2 are acting at a point such that the angles between them are (1) 30 degree (2) 60 degree and (3) 45 degree show that resultant forces will be
  80. physics

    two forces f1 and f2 are acting at a point such that the angles between them are (1) 30 degree (2) 60 degree and (3) 45 degree show that resultant forces will be
  81. Physics

    When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell. As a simple model of the supernova process, assume
  82. Physics

    Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used
  83. Physics

    For the normal force in the drawing to have the same magnitude at all points on the vertical track, the stunt driver must adjust the speed to be different at different points. Suppose, for example, that the track has a radius of 4.84 m and that the driver
  84. Physics

    A satellite has a mass of 6146 kg and is in a circular orbit 4.57 × 105 m above the surface of a planet. The period of the orbit is 1.6 hours. The radius of the planet is 4.44 × 106 m. What would be the true weight of the satellite if it were at rest on
  85. Math

    On a Christmas package, Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing $5.76 in postage?
  86. college physics

    A 55-kg woman cheats on her diet and eats a 465-Calorie (465 kcal) jelly doughnut for breakfast. (c) If the human body is only 24% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfast?
  87. college physics

    An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 400-g sample of silver at an initial temperature of 87°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium
  88. math

    at the bowling alley Angela rented shoes for $3.00. It cost her $2.50 to bowl each game. develop an equation using the form C(x)=mx+b, where C(x) is the total cost and x is the number of games bowled.
  89. physics PLEASE HELP

    A hydraulic cylinder with a radius of 0.0268 m has a piston on the left end and a safety valve at the right end. The safety valve is a circular opening with a radius of 0.00639 m, sealed with a disk. The disk is held in place by a spring (spring constant =
  90. physics

    The drawing shows an intravenous feeding. With the distance of 0.610 m, nutrient solution (ρ = 1010 kg/m3) can just barely enter the blood in the vein. What is the gauge pressure of the venous blood? Express your answer in millimeters of mercury.
  91. physics

    Between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage. Typically, this disc has a radius of about 2.85 10-2 m and a thickness of about 7.14 10-3 m. The shear modulus of cartilage is 1.16 107 N/m2. Suppose that a shearing
  92. History

    Plato and Aristotle both argued that political life should reflect humans' aspirations to live in a genuinely "good" society. However, their visions and ideas were very distinct. How were these "good societies" similar, and how were they different? Whose
  93. Ap calculus

    Let h(x) = f (x-pi). Find the domain and range of h.
  94. ap chem

    you have 1.00 liter each of 0.10 M Na3PO4, Na2HPO4, NaH2po4 ka 1= 7.5*10^-3 ka2=6.2*10^-8 ka3=4.8*10^-13 a) prepare 500 ml of a buffer with PH= 7.6 b) how much 0.10 M HCL must be added to the 500ml of buffer to result in a PH=7.2 after the addition?
  95. Stats

    A public heath official wanted to know how often university students visit their student health centers due to illness or injury. The official took a nationwide random sample of 120 university students and found an average of (x bar) = 2.30 visits per
  96. chemistry

    Methanol (CH3OH) is used in the production of many chemicals. Methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure. CO(g) + 2 H2(g) CH3OH(g) (a) How many moles of each reactant are needed to produce 4.83 102 g CH3OH?
  97. chemistry

    Methanol (CH3OH) is used in the production of many chemicals. Methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure. CO(g) + 2 H2(g) CH3OH(g) (a) How many moles of each reactant are needed to produce 4.83 102 g CH3OH?
  98. math

    A cube of side length of 11cm and a mass of 2000g has what density?
  99. chemistry

    a 205 mg sample of diprotic acid is dissolved in enough water to make 250 ml of solution. The pH of this solution is 2.15. A saturated solution of calcium hyrdoxide (Ksp=1.3*10^-6) is prepared by adding excess calcium hydroxide to water and then removing
  100. chemistry

    explain how you would develop a scheme to separate and identify ag, pb, fe,and al in a solution that might contain all four as ions


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