PAUL

Most popular questions and responses by PAUL
  1. Chemisty

    The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.270 M NaOH. What volume of NaOH is needed to reach the end point of the titration? What was the initial concentration of HCl?

    asked on January 14, 2013
  2. physics

    A rocket is fired in deep space, where gravity is negligible. In the first second it ejects 1/160 of its mass as exhaust gas and has an acceleration of 15.1 m/s^2.What is the speed v_gas of the exhaust gas relative to the rocket?

    asked on November 14, 2011
  3. Math

    The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers are selected at random form the production lines. Would it be unusual for this sample of 800 to contain 386 jawbreakers that weigh

    asked on October 3, 2013
  4. math

    in a class of 28 sixth graders , all but one of the students are 12 years old. which two data measurements are the same for the student's ages? What are those measurements?

    asked on August 10, 2011
  5. english

    Which phrase or sentence in this excerpt from Kurt Vonnegut's "Report on the Barnhouse Effect" demonstrates the use of irony? One long bench had been brought in for the ten of us privileged to watch. The television screens showed, from left to right, the

    asked on April 20, 2017
  6. Chem

    How do I Balance the equation. HC2H3O2(aq)+Ca(OH)2(aq)→H2O(l)+Ca(C2H3O2)2(aq)

    asked on August 16, 2013
  7. financial accounding

    unexpired insurance at the end of the fiscal period represents; an accrued asset, an accrued liability, an accrued expense, or a deferred expense?

    asked on September 21, 2008
  8. science

    A new moon is discovered orbiting Neptune with an orbital speed of 9.3 ´ 10 m/s. Neptune’s mass is 1.0 ´ 10 kg. What is the radius of the new moon’s orbit? What is the orbital period? Assume that the orbit is circular. (G = 6.673 ´ 10 N·m/kg)

    asked on March 3, 2014
  9. Finance

    The stock price of Webber Co. is $68. Investors require an 11 percent rate of return on similar stocks. Required: If the company plans to pay a dividend of $3.85 next year, what growth rate is expected for the company’s stock price?

    asked on March 10, 2014
  10. Finance

    Anderson International Limited is evaluating a project in Erewhon. The project will create the following cash flows: Year Cash Flow 0 –$690,000 1 243,000 2 175,000 3 256,000 4 231,000 All cash flows will occur in Erewhon and are expressed in dollars. In

    asked on March 19, 2014
  11. chemistry

    Net Ionic equations for.. 1. Co(NO3)2 + NH3 --> ?? 2. Cu(NO3)2 + NH3 --> ?? 3. Ni(NO3)2 + NH3 --> ?? I can balance equations, I just don't know what goes on the products side.

    asked on July 15, 2009
  12. physics

    A bicycle is rolling down a circular portion of a path; this portion of the path has a radius of 8.73 m. As the drawing illustrates, the angular displacement of the bicycle is θ = 0.979 rad. What is the angle (in radians) through which each bicycle wheel

    asked on August 5, 2015
  13. Chemistry

    Kb for aniline is 4.3 x 10^-10. What does this tell you about aniline? Please help!

    asked on March 14, 2010
  14. AP PHYSICS

    the height of the upper falls at Yellowstone falls is 33.2m. when the water reaches the botton of the falls, its speed is 25.8 m/s. neglecting air resistance, what is the speed of the water at the to of te falls.

    asked on November 15, 2010
  15. PHYSICS PLEASE HELP!!

    A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. The electron and neutrino are emitted at right angles and have momenta of 9.15×10−23 kg . m/s and 5.19×10−23 kg . m/s, respectively. 1.)What is the magnitude of

    asked on November 20, 2011
  16. Social studies

    Which ruler was most responsible for uniting Greece and building an empire? A. Alexander the Great B. Pericles C. King Philip D. Xerxes

    asked on December 11, 2018
  17. pysic

    A 328 kg car moving at 19.1 m/!@#$%^&s from behind another car moving at 13.0m/s in the same direction. If the second car has a mass of 790kg and a new speed of 15.1m/s what is the velocity of the first car after the collision?

    asked on July 21, 2010
  18. Chemistry

    At T = 25 degrees Celsius, the reaction No2 2NO +O2 has an equilibrium constant K=5.0*10^-13. Suppose the container is filled with NO2 at an initial pressure of 0.25 atm. Calculate the partial pressure of NO at equilibrium

    asked on November 29, 2012
  19. langage arts

    Which of the following passages from the novel is most useful in helping you determine what type of ruler general gage is from Johnny remain? Select all that apply A Sam Adams was so happy his hands shook worse then ever B. He was not brilliant, but he was

    asked on December 17, 2014
  20. Trigonometry

    a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 61°30' and 56°20' respectively. How high is the building?

    asked on July 11, 2013
  21. math

    50 people purchase raffle tickets 3 winning tickets are selected at random if the first prize is $1,000, second prize is $500, and third prize is $100 in how many different ways can the prizes be awarded and is this a permutations or a combinations

    asked on May 7, 2016
  22. Chemisty

    The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.270 M NaOH. What volume of NaOH is needed to reach the end point of the titration? What was the initial concentration of HCl?

    asked on January 14, 2013
  23. Physics

    How long would it take a kettle with a 1kW heating element to heat 1 litre of water? Watts = Joules / second • Mass of 1 litre of water = 1kg • 1 kW = 1 k Joule / second or 1000 joules/ second • 1g of water needs 4.184J to raise the temperature by

    asked on December 15, 2010
  24. chem

    what are the normal freezing points and boiling points of the following solutions: a. 21.1g NaCl in 135mL of water b. 15.4g urea in 66.7 mL water?

    asked on January 12, 2011
  25. Physics (Momentum and collusion)

    Two balls of equal mass undergo a collision. Ball one is initially travelling horizontally with a speed of 10 m/s, ball two is initially at rest. After the collision, ball one moves away with a velocity of 4.7 m/s at an angle of 60 degrees from it's

    asked on September 6, 2016
  26. Math

    A heat exchanger is used to warm apple cider using steam as the heat source. The cider is heated from an initial temperature of 4°C to a final temperature of 65°C. The steam enters the heat exchanger as 50% quality steam and exits as water condensate at

    asked on February 17, 2013
  27. Chemisty

    The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.270 M NaOH. What volume of NaOH is needed to reach the end point of the titration? What was the initial concentration of HCl?

    asked on January 14, 2013
  28. BC Calculus

    Fluid is flowing in a tube that has a radius of 3 centimeters. Water is flowing through a circular cross section at a rate of (9-r^2) cm/s, where r is the distance from the center of the cross section. What is the total amount of water that flows through

    asked on October 15, 2017
  29. Math

    Bacteria A has an initial population of 500 and doubles everyday. Bacteria B has an initial population of 50 and triples everyday. How long will it take the population of bacteria B to overtake the population of bacteria A

    asked on October 27, 2013
  30. Finance

    Sully Corp. currently has an EPS of $2.35, and the benchmark PE ratio for the company is 21. Earnings are expected to grow at 7 percent per year. Requirement 1: What is your estimate of the current stock price? (Do not round intermediate calculations.

    asked on March 10, 2014
  31. History

    Is there something peculiar about Africa that delayed its drive for independence? (Begin with a specific African country, and argue your case.)

    asked on June 1, 2017
  32. Chemistry

    At a certain temperature, 0.700 mol of SO3 is placed in a 3.50-L container. At equilibrium, 0.100 mol of O2 is present. Calculate Kc. 2SO3=2SO2 +)2

    asked on January 19, 2013
  33. zero cubed

    What is zero cubed or zero to the third power

    asked on May 1, 2009
  34. FInance

    Most corporations pay quarterly dividends on their common stock rather than annual dividends. Barring any unusual circumstances during the year, the board raises, lowers, or maintains the current dividend once a year and then pays this dividend out in

    asked on March 10, 2014
  35. math probability

    the faces on a fair number cube are labeled 1,2,3,4,5, and 6. Steven rolls the number cube 48 times. how many times should Steven expect to roll a 3?

    asked on June 5, 2019
  36. PrimaryMatheMatics 4A textbook

    3000 Exercise books are arranged into 3 piles.The first pile has 10 more books than the second pile.The Number of books in the second pile is twice the number of books in the third pile.How Many books are there in the third pile?

    asked on December 22, 2015
  37. PSY/410

    Will someone please check my answer please. Thanks in advance. Match the definitions to the correct theoretical model. 1. ___J__ Experiences as a child affect life. Child is influenced by caretaker but also has a part in development. 2. __F___ 2–3 years

    asked on July 9, 2014
  38. CALCULUS BC

    a particle moves on the x-axis in such a way that its position at time t is given by x(t)=3t^5-25^3+60t. for what values of t is the particle moving to the left. a.-2

    asked on November 15, 2010
  39. Chemistry

    The maximum solubility of silver sulfate, Ag2SO4 [molar mass = 312], is 4.50 g/L at 25°C. Silver sulfate dissociates by the reaction below: Ag2SO4(s) 2 Ag+ (aq)+ SO4¯² (aq) 1.What are the [Ag+] and [SO4¯²] in a saturated solution of silver sulfate

    asked on March 20, 2011
  40. Introduction to computers

    Which type of updates should be installed in a test environment before being installed in a live enterprise environment?

    asked on December 14, 2015
  41. chemistry

    The specific heat capacity of iron is 0.45 j/g oC. how many joules of energy are needed to warm 1.3100000000000001 g of iron from 20.00oC to 29.00 oC ?

    asked on October 6, 2018
  42. Physics

    In a cyclotron (one type of particle accelerator), a deuteron (of mass 2.00 u) reaches a final speed of 10.1% of the speed of light while moving in a circular path of radius 0.540 m. What magnitude of magnetic force is required to maintain the deuteron in

    asked on March 27, 2014
  43. math

    Macario is making 9 pounds of nut mixture with macadamia nuts and almonds. Macadamia nuts cost $8 per pound and almonds cost $5.25 per pound. How many pounds of almonds and how many pounds of macadamia nuts should Macario use for the mixture to cost $61.00

    asked on July 2, 2019
  44. math

    Fred has 15 cows. John has twice as many cows as Fred had when Fred had as many cows as John has now. How many cows does John have?

    asked on November 21, 2018
  45. chemistry

    I have many equations that need to be net ionic balanced 1. Al(NO3)3 + NH3 --> ?? 2. Fe(NO3)3 + NH3 --> ?? 3. Mn(NO3)2 + NH3 --> ?? ^^ All aqueous

    asked on July 15, 2009
  46. Chemistry

    0.50 M HI with 0.10 M KOH pH at equivalence point? I had another problem like this and I tried to do it the same way b/c I thought that was the right thing to do but it seems as if its not? Can you help? HI + KOH ==> KI + H2O. At the equivalence point we

    asked on April 2, 2007
  47. chemistry

    Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is S2 +C =CS2 Kc= 9.40 at 900k How many grams of CS2(g) can be prepared by heating 14.3 moles of S2(g) with excess carbon in a 8.55 L reaction vessel held at 900 K until

    asked on January 19, 2013
  48. maths

    iam a 3 digit number. my tens digit is five more than my ones digit. my hundreds digit is eight less than my tens. what number am i?

    asked on February 17, 2018
  49. english

    Because he was bourgeois coddled despotic _______ as a child, Rob was a rather self-centered teenager. dubious coddled despotic bourgeois 2.After hearing the raucous, cheering response to Adam’s speech, Mr. James feared that his new student body

    asked on April 20, 2017
  50. math 5th grade

    The width of a picnic table is 3 times its length. If the length is 5 6 -yd long, what is the area of the picnic table in square feet? sides are 2 1/2 yd and 5/6 yard. then to find area 2 1/2 x 5/6 = 2 5/12 y2 how do I find square feet?

    asked on May 5, 2016
  51. Science

    The speed of a motorcycle increases from 10.0 km/hr to 50.0 km/hr in 9.0 seconds. What is the acceleration?

    asked on October 19, 2015
  52. physics

    If an object is thrown in an upward direction from the top of a building 160 ft high at an initial speed of 30 mi/h, what is its final speed when it hits the ground

    asked on May 21, 2015
  53. stat

    A college basketball player scored the following points in the 37 games he played his senior year: Stem-and-leaf of points n = 37 Leaf Unit = 1.0 1|33 1|66 2|1233444 2|5555666789 3|0222233444 3|89 4|23 4|7 5|2 The first quartile of his point totals is

    asked on September 4, 2016
  54. Algebra

    Find an exponential function of the form f(x) = ba^x that has the given y-intercept and passes through the point P. y-intercept 4; P(2, 1)

    asked on April 17, 2013
  55. Solid Mensuration

    Two similar cones have volumes 81pi/2 in^3 and 12pi in^3 and slant height of the bigger cone is 7.5 in. Find the integer solution to the height of the similar cone.

    asked on March 2, 2012
  56. math

    3/5 + 3/4 round each fraction and estimate the sum. add the two fraction using a common denominator and then round the result. which estimate is closer to the actual answer.

    asked on October 27, 2014
  57. math

    One-half of a number plus three-fourths of the number is 2 more than four-thirds of the number. find the number .

    asked on August 21, 2016
  58. Chemisty

    0.550 L of 0.420 M H2SO4 is mixed with 0.500 L of 0.270 M KOH. What concentration of sulfuric acid remains after neutralization?

    asked on January 14, 2013
  59. spanish

    Form complete sentences using the information provided. Use indirect object pronouns and the present tense of the verbs Javier / prestar / el abrigo / a Gabriel

    asked on September 18, 2011
  60. math

    A deck of 38 cards contains 16 blue cards, 6 red cards, and 16 yellow cards. What is the probability of randomly drawing a blue card from this deck?

    asked on June 16, 2010
  61. chemistry

    why ortho nitrophenol are more volatile than para nitrophenol

    asked on May 14, 2008
  62. physics

    A man holds a child on shoulders while watching a football match. How much work has he done if the game last for 2 hours

    asked on January 4, 2017
  63. calculus

    a ladder 10m long is leaning against a vertical wall with its other end on the ground. the top end of the ladder is sliding down the wall , when the top end is 6m from the ground it is sliding down at 2m/sec. how fast is the bottom moving away from the

    asked on September 22, 2016
  64. physics (Compton effect)

    need helppp. Find the energy of an x-ray photon that can impart a maximum energy of 50 keV to an electron by Compton collision. Max energy being Kinetic Energy? do I just plug the 50*10^3 eV (convert to J) into the E=h (c/lambda) equation?? We are not

    asked on October 10, 2015
  65. physic

    An aluminum rod is 10.0 cm long and a steel rod is 80.0 cm long when both rods are at a temperature of15 degrees cel. Both rods have the same diameter. The rods are joined end-to-end to form a rod 90.0 cm long. The coefficients of linear expansion of

    asked on July 24, 2010
  66. Chem

    What is the pressure in a 2.00 L container which holds 0.100 mol of methane and and 0.200 mol of carbon dioxide at standard temperature?

    asked on February 17, 2011
  67. Chemistry

    what volume of 1.015mol/L magnesium hydroxide is needed to neutralize 40.0mL of 1.60mol/L hydrochloric acid. Can you work it out please? Thanks!

    asked on January 27, 2011
  68. chemistry

    In a reaction involving the iodination of acetone, the following volumes were used to make up the reaction mixture: 10 mL 4.0 M acetone + 10mL 1.0 M HCL + 10 mL 0.0050 M I2 + 20 mL H2O A student found that it took 250 seconds for the color of the I2 to

    asked on July 26, 2010
  69. math

    In standard position, an angle of 7pi/3 radians has the same terminal side as an angle of? A)-420 B)120 C)60 D)625

    asked on January 28, 2009
  70. Chemistry

    NH4HS(s) NH3(g) + H2S(g) ∆H_ = +93 kilojoules The equilibrium above is established by placing solid NH4HS in an evacuated container at 25°C. At equilibrium, some solid NH4HS remains in the container. Predict and explain each of the following. (a) The

    asked on January 13, 2011
  71. Chemistry

    What is the pressure in a 2.00 L container which holds 0.100 mol of methane and and 0.200 mol of carbon dioxide at standard temperature?

    asked on February 17, 2011
  72. physic

    by how many newtons do you increase the weight of your car when you fill up your 11.5 gal gas tank with gasoline a gallon is equal to 3.788 L and the density of gasoline is 737kg/m3

    asked on July 20, 2010
  73. science

    can anyone give me 10 examples or energy interconversions and how they work please thankyou.

    asked on December 5, 2010
  74. Chemistry

    How can i explain the key features of the periodic table relate to the conclusions after a titration experiment

    asked on October 11, 2010
  75. Social study

    Why did Romans try to make their gods happy? A. because they believed the gods would help them convert to Judaism B. because they believed they could be put in jail for making the gods unhappy C. because they believed the gods would remove Julius Caesar

    asked on January 3, 2019
  76. physics

    An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 10.6 m/s in 4.0 s. Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.0 s has elapsed?

    asked on September 20, 2013
  77. physics

    Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must

    asked on September 19, 2013
  78. Chemistry

    How can i explain the key features of the periodic table relate to the conclusions after a titration experiment The experiment was the preperation of a standard solution of sodium carbonate and titration for the equation between hydrchloric acid and sodium

    asked on October 11, 2010
  79. english

    1. Reich says, “When we see the contrast between the values we share and the realities we live in, that is the fundamental foundation for social change.” What do you think about that statement? How would you describe the disconnect between American

    asked on April 24, 2016
  80. Chemistry Very Urgent!!

    A 0.035 M solution of a weak acid (HA) has a pH of 4.88. What is the Ka of the acid? HA ==>H^+ + A^- Ka = (H^+)(A^-)/(HA) pH = -log(H^+) You know pH. Convert that to (H^+). (H^+)=(A^-) so plug those into the expression for Ka. (HA) = 0.035 M - (H^+). Plug

    asked on April 2, 2007
  81. Math

    Your friend is 1.2 times taller than you. Your friend is 64.5 inches tall. How tall are you?

    asked on October 14, 2015
  82. Statistics

    Hi, I have to answer if each questions is a nominal, ordinal, interval discrete, interval continuous, ratio discrete, or ratio continuous. I would like to know if my answers are correct and if wrong what is the correct answer. Thanks 1. Highest level of

    asked on September 19, 2010
  83. math

    how many books each 1.5cm thick can be kept in a shelf 1.45m high

    asked on May 23, 2017
  84. physics

    A steel ball has a mass of 4.0kg and rolls along a smooth, level surface at 62m/s. A) Find its kinetic energy(i got this and its 7688 joules) B)?????-At first, the ball was at rest on the surface. A constant force acted on it through a distance of 22

    asked on November 22, 2008
  85. rf value of lycopene

    Is the the rf value of lycopene and with what solvent can you use as a mobile phase on a TLC? I don't know the answer here but I looked on the Internet and found something that may get you started. I found the Rf value for lycopene to be between 0.4 and

    asked on February 19, 2007
  86. Chemistry

    How many moles of steric acid are contained in 0.25mL of a hexane solution containing 5.4x10^-4 grams of steric acid/L? (Hint: g/L x L = g/ (g/mol)=mol). Please show your work. Please help. Thank you

    asked on October 6, 2014
  87. math

    Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a spade given that the second card is a club? (Round your answer to three decimal places)

    asked on October 16, 2012
  88. chemitry

    show that the equivalence amount of citric acid for 1.00g of sodium bicarbonate is 0.76g

    asked on October 11, 2011
  89. biology

    compare and contrast the variety of amino acids with that of monosaccharides and fatty acids. Which group exhibits the greatest structural variability?

    asked on February 11, 2010
  90. Chemistry

    Aspirin can be prepared by the reaction of salicylic acid with an excess of acetic anhydride, using phosphoric acid as a catalyst. Once the aspirin is formed, it is precipitated from the reaction mixture by adding water and filtering. The solid aspirin

    asked on April 2, 2009
  91. Chemistry

    Preperation of a standard solution of sodium carbonate and titration for the equation between hydrchloric acid and sodium carbonate How can i explain the key features of the periodic table relate to the conclusions of the above experiment, i need to

    asked on October 9, 2010
  92. managerial economics

    1. Some games of strategy are cooperative. One example is deciding which side of the road to drive on. It doesn’t matter which side it is as long as everyone chooses the same side. Otherwise, everyone may get hurt. Driver 2 Left Right Driver 1 Left 0,0

    asked on May 17, 2010
  93. Physics

    White dwarf stars have been observed with a surface temperature as hot as 200,000 o C. What is the wavelength of the maximum intensity produced by this star?

    asked on September 23, 2014
  94. calculus--please help!!

    I have two questions that I don't understand and need help with. 1. information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zerosof f. degree 4, zeros i;9+i 2. form a polynomial f(x) with real coefficients

    asked on December 27, 2012
  95. physi

    a slab of ice floats on a freshwater lake what is the minimum volume must the slab have for a 45kg women to be able to stand on it without getting her feet wet?

    asked on July 20, 2010
  96. Chemistry

    At T = 25 degrees Celsius, the reaction No2 2NO +O2 has an equilibrium constant K=5.0*10^-13. Suppose the container is filled with NO2 at an initial pressure of 0.25 atm. Calculate the partial pressure of NO at equilibrium

    asked on November 29, 2012
  97. combustion

    You have a gaseous octane (C8H18(g)). Calculate the lower heating value (LHV) and higher heating value (HHV) of the given fuel in MJ/kg(fuel).

    asked on October 4, 2012
  98. Physics

    An infinitely long line charge of uniform linear charge density λ = -3.00 µC/m lies parallel to the y axis at x = -2.00 m. A point charge of 4.70 µC is located at x = 1.50 m, y = 2.50 m. Find the electric field at x = 2.50 m, y = 2.00 m. I get 23.7

    asked on October 9, 2011
  99. Chemistry

    what volume of 1.015mol/L magnesium hydroxide is needed to neutralize 40.0mL of 1.60mol/L hydrochloric acid. Can you work it out please? Thanks!

    asked on January 27, 2011
  100. chemistry

    How many bonds can each atom make without hybridization? B,N, and O

    asked on December 5, 2014

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