Most popular questions and responses by kyle
  1. SS

    Why did Britain and France adopt a policy of appeasement when meeting with Hitler at the Munich conference A They knew he had an agreement with the Soviet union over Poland B they were led to believe he wouldn't try to take any more territory in Europe

    asked on March 2, 2017
  2. Challenge and Change

    I'm trying to find an answer to this question.. Search and find three other contributors to the field of Marxist or neo-Marxist (new Marxist) research... I've been searching for hours with no luck!! Someone please help!

    asked on February 17, 2008
  3. spanish

    Querida Beth: 1) (blank) esta todo bien y esperamos que 2) (blank) tambien lo este. 3) (blank) lo pensemos y lo conversemos, tu padre y yo no estamos contentos con tu viaje. 4) (blank) en nuestras vidas estamos muy preocupados porque creemos que eres mu

    asked on October 20, 2010
  4. pH

    Determine the pH of each of the following solutions. 0.21 M KCHO2 0.19 M CH3NH3I 0.19 M KI I'm not sure how i should set up the ice chart, and what Ka I should be using for the solutions

    asked on March 24, 2010
  5. History

    What was a main cause of the Italian Independence War in the 1860s? A.opposition of the Italians against King Victor Emmanuel B.Austrian occupation and rule of northern Italy C.Napoleon’s conquest of the Italian peninsula D.a mutiny by Italian soldiers

    asked on January 23, 2018
  6. mole fraction

    A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 241 torr. Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature. What is the mole fraction of

    asked on January 30, 2010
  7. science

    the African plate is moving toward the Eurasian plate at a rate of a few centimeters per year. how will this area change in 100 million years? in your answer, consider how continents will change and how the Mediterranean sea will change.

    asked on May 5, 2016
  8. Physics

    A man stands on the roof of a 15m tall building and throws a rock with a velocity of magnitude 30m/s at an angle of 33deg above the horizontal. Ignore air resistance. Calculate: a) the maximum heigh above the roof reached by the rock b) the magnitude of

    asked on September 27, 2011
  9. College Chemistry

    Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of 215 mg/L. I calculated the molarity as 1.58*10^-3 and the Ka as 1.58*10^-10. I did ICE and i got the pH as 6.3, but it was

    asked on March 23, 2010
  10. Algebra

    negative numbers closed under subtraction. True or false My answer is false, is this correct

    asked on August 20, 2015
  11. science

    tom is marking the locations of active volcanos on a world map. explain how the locations of the volcanoes are related to earths plates

    asked on May 5, 2016
  12. science

    a 54-gram sample of an unknown material has a volume equal to 20cm3 what is the identity of the substance

    asked on February 18, 2016
  13. English and Vocabulary

    My Vocab Words: 1. Degenerate 2. Implausible 3. incoherent 4. intercede 5. intricate 6. sanctuary 7. scrutiny 8. sinister 9. suffice 10. vulnerable need help 1-2 Birds feel ___ to attack when they are out in the open where shrubbery is sparse. To attract

    asked on October 28, 2015
  14. Math

    The results of a survey are shown. In the survey, 28 students said their favorite dessert is ice cream. a. How many students were surveyed? b. How many students said their favorite dessert is pie? Favorite Dessert Pie: 15% Candy: 23% Cake: 27% Ice Cream:

    asked on March 21, 2017
  15. Chemistry

    The elements lithium and oxygen react explosively to from lithium oxide (Li2O). How much lithium oxide will form if 3.03 mol of lithium react? Answer in units of mol

    asked on April 4, 2013
  16. math

    Suppose babies born in a large hospital have a mean weight of 3181 grams, and a standard deviation of 526. If 97 babies are sampled at random from the hospital, what is the probability that the mean weight of the sample babies would differ from the

    asked on January 23, 2015
  17. Physics

    An unfortunate astronaut loses his grip during a spacewalk and finds himself floating away from the space station, carrying only a rope and a bag of tools. First he tries to throw a rope to his fellow astronaut, but the rope is too short. In a last ditch

    asked on November 19, 2012
  18. Lattice Energy

    Arrange the following substances in order of decreasing magnitude of lattice energy. KCl NaF SrO BaO

    asked on December 5, 2009
  19. Chemistry Equations

    What's the equation for the formation of NO2(g) from its elements in its standard states? What's the equation for the formation of BF3(g) from its elements in its standard states? What's the equation for the formation of C2H5OH(l) from its elements in its

    asked on November 5, 2009
  20. Chemistry

    Calculate the radius of a vanadium atom, given that V has a BCC crystal structure, a density of 5.96 g/cm3, and an atomic weight of 50.9 g/mol. I used this equation: density = (2)*(atomic weight) / (volume of unit cell)*(Avagodro's #) rearranged to find

    asked on January 16, 2013
  21. Physics

    A baseball is hit with a speed of 27.0 m/s at an angle of 42.0 deg. It lands on the flat roof of a 10.0 m-tall nearby building. If the ball was hit when it was 1.0 m above the ground, what horizontal distance does it travel before it lands on the building?

    asked on August 2, 2011
  22. physics

    Two 72.0-kg hockey players skating at 7.00 m/s collide and stick together. If the angle between their initial directions was 130 degrees , what is their speed after the collision?

    asked on March 17, 2010
  23. Physics

    A 70.0-kg astronaut pushes to the left on a spacecraft with a force   in "gravity-free" space. The spacecraft has a total mass of 1.0 × 104 kg. During the push, the astronaut accelerates to the right with an acceleration of 0.36 m/s2. Determine the

    asked on January 5, 2017
  24. Math

    A length of rope is stretched between the top edge of a building and a stake in the ground. The head of the stake is at ground level. The rope also touches a tree that is growing halfway between the stake and the building. If the tree is 38 feet tall, how

    asked on December 4, 2014
  25. History

    What impact did technology have during World War I? a.Guerrilla warfare became more prevalent with advances in surveillance technology. b.The use of iron created the first battleships in the history of warfare. c.Military advancement on the western front

    asked on January 23, 2018
  26. History

    What impact did World War I have on Russia? a.Russia’s territorial losses in the Baltic region led it to sign the Versailles Treaty to end its involvement. b.Russia’s high casualty rate led Czar Nicholas II to abandon the war effort to save civilian

    asked on January 23, 2018
  27. Chemistry

    A solution contains Cr+3 ion and Mg+2 ion. The addition of 1.00 L of 1.55 M NaF solution is required to cause the complete precipitation of these ions as CrF3(s) and MgF2(s). The total mass of the precipitate is 49.8 g. Find the mass of Cr+3 in the

    asked on October 12, 2009
  28. Buffer solution

    Solve an equilibrium problem (using an ICE table) to calculate the pH. a solution that is 0.205 M in CH3NH2 and 0.110 M in CH3NH3Br. i used th Ka of CH3NH2 and set up the problem as Ka=[H3O][CH3NH2]/[CH3NH3Br], but that was wrong. So i switched the

    asked on March 27, 2010
  29. science

    a blank property of matter describes an ability to change into different substances

    asked on February 18, 2016
  30. math

    George wants to put carpeting in a rectangular living room and a square bedroom. The length and width of the lving room is 12 feet by 18 feet. One side of the square bedroom is 13 feet. It will cost $3.50 per square foot to carpet the rooms. A)Write an

    asked on February 12, 2015
  31. heat of vaporization

    Suppose that 1.00 g of rubbing alcohol (C3H8O) evaporates from a 54.0 g aluminum block. If the aluminum block is initially at 25 C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the

    asked on January 16, 2010
  32. math

    Alan has partially completed the chart showing the distance between his town, Greenville and two other towns. DISTANCE BETWEEN GREENVILLE and NEARBY TOWNS (miles) Parker = 29 Hadley = ? 1)The distance between Hadley and Greenville is 13 miles less than the

    asked on February 26, 2015
  33. science

    a banana turning brown when exposed to the air is an example of what

    asked on February 18, 2016
  34. History

    What was the Battle of the Somme? A.It was the longest battle that occurred during World War I. B.It was a battle that opened a second World War I front in Turkey. C.It was a months-long battle resulting in massive British casualties. D.It was a battle

    asked on January 23, 2018
  35. Physics

    A fan at a rock concert is 45.0 m from the stage, and at this point the sound intensity level is 108 dB. Sound is detected when a sound wave causes the tympanic membrane (the eardrum) to vibrate . Typically, the diameter of this membrane is about 8.40 m in

    asked on May 4, 2012
  36. Chem!??!?!?!?

    Is it possible for a cup of water to completely evaporate in a room with a constant temperature of 21ºC??? Yes, of course. Why would you think it would not? A wet towel will dry, right? but why is that? The Kinetic Molecular Theory, distributed velocity

    asked on January 22, 2007
  37. college physics

    In a nuclear reactor, neutrons released by nuclear fission must be slowed down before they can trigger additional reactions in other nuclei. To see what sort of material is most effective in slowing (or moderating) a neutron, calculate the ratio of a

    asked on March 18, 2010
  38. math

    Determine if the statement is always, sometimes, or never true: A right triangle is an obtuse triangle. always sometimes never

    asked on July 16, 2014
  39. Physics

    Suppose that a NASCAR race car is moving to the right with a constant velocity of +92 m/s. What is the average acceleration of the car? (b) Twelve seconds later, the car is halfway around the track and traveling in the opposite direction with the same

    asked on September 5, 2011
  40. Physics

    A 400.0-m-wide river flows from west to east at 30.0 m/min. Your boat moves at 100.0 m/min relative to the water no matter which direction you point it. To cross this river, you start from a dock at point A on the south bank. There is a boat landing

    asked on July 27, 2011
  41. Language Arts

    Hello, this is long but I need my answer checked to this short selection the question is asking What best expresses the Author's point of view. Story selection: There's good news and bad news about grizzly bears in the American West. The good news their

    asked on April 21, 2015
  42. Physics

    A hydroxide ion (OH−) in a glass of water has an average speed of about 600 m/s. Determine the magnitude of the electrical force between the hydroxide ion (charge −e) and a positive ion (charge +e) that is 1.0 × 10−8 m away (about the separation of

    asked on October 3, 2016
  43. Physics

    (c22p46) A light ray of wavelength 589 nm is incident at an angle θ on the top surface of a block of polystyrene surrounded by air. PART 3: Find the maximum value of θ for which the refracted ray will undergo total internal reflection at the left

    asked on March 23, 2010
  44. Math (calc)

    An open box with a square base is to have a volume of 12ft^3. Find the box dimensions that minimize the amount of material used. (round to two decimal places). it asks for the side length and the height. Please help asap due in a few hours. Thank you

    asked on February 8, 2017
  45. Brief calculus

    The marginal cost of producing the xth box of CDs is given by 9 − x/(x^2 + 1)^2. The total cost to produce 2 boxes is $1,200. Find the total cost function C(x). I'm getting 9x-(1/(x^2 - 1))+1181.9 but i guess its wrong

    asked on November 3, 2013
  46. physics

    A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.170 rad/s2. After making 2870 revolutions, its angular speed is 131 rad/s. (a) What is

    asked on July 16, 2013
  47. algebra

    what are two different word phrases for the expression t/30 ?

    asked on December 5, 2011
  48. pH levels

    Rank the following solutions in order of decreasing [H3O^+]. .10 M HC2H3C2 .10 M HC6H5O .10 M HF ,10 M HBr I think the correct order is: HBr>HF>HC2H3C2>HC6H5O am i right?

    asked on March 21, 2010
  49. Physics

    A helicopter is lifting off from the ground and is moving vertically upward. The graph shows its vertical velocity vy versus time. How high is the helicopter after 12.0 s have elapsed?

    asked on September 5, 2011
  50. Physics

    A simple pendulum has a bob of mass M. The bob is on a light string of length l. The string is fixed at C. At position A, the string if horizontal and the bob is at rest. The bob is released from A and swings to B, where the string is vertical. The tension

    asked on October 11, 2015
  51. science

    Tom is markina locations of active volcanoes on a world map explain how the locations of the volcanoes are related to Earth's plates

    asked on May 3, 2016
  52. georgia state history

    Which of the following was an advantage of the south at the beginning of the civil war A. The south had agriculture products to provide food for the army B. The south had many factories that created superior machinery C. The south had a more advanced fleet

    asked on November 3, 2015
  53. Language

    Identify the verbs and verb phrases in the following sentences. Then, classify each verb or verb phrase as transitive action, intransitive action, or intransitive linking. Give the object(s) of each transitive action verb and the subject complement(s) of

    asked on August 24, 2015
  54. Chemistry

    Determine the molar mass of the unknown acid.? A 0.167-g sample of an unknown acid requires 27.8 mL of 0.100 M NaOH to titrate to the equivalence point. Elemental analysis of the acid gives the following percentages by mass: 40.00% C; 6.71% H; 53.29% O.

    asked on December 5, 2009
  55. math

    Draw a diagram to show that there are two tangent lines to the parabola y = x2 that pass through the point (0, −25). Find the coordinates of the points where these tangent lines intersect the parabola.

    asked on January 9, 2016
  56. Physics

    A 5.00×10^5-kg rocket is accelerating straight up. Its engines produce 1.250×10^7 N of thrust, and air resistance is 4.50×10^6 N. What is the rocket’s acceleration? I just need the formula for finding the acceleration.

    asked on October 1, 2014
  57. chemistry

    what type of reaction occurs Fe3O4 + 4H2 → 3Fe + 4H2O

    asked on April 18, 2014
  58. Physics

    In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 43.8 m/s, to his enemy's car, which is going 55.8 m/s. The enemy's car is 15.2 m in front of the Indy's when he lets go of the grenade. A) If Indy throws the

    asked on August 9, 2011
  59. Chemistry

    The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1.000 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H2O and the bomb has a heat capacity of 457 J/C, what is the temperature increase of the bomb

    asked on October 11, 2012
  60. math

    Suppose y varies directly with x and y = 72 when x = 6. What direct variation equation relates x and y? What is the value of y when x = 10?

    asked on October 21, 2016
  61. science

    a bananan turning brown when exposed to the air is an example of

    asked on February 18, 2016
  62. math

    In the small town of Middleton, there are only two restaurants that serve pizza- a small family-owned Italian restaurant and a new franchise pizza restaurant. In a recent review of the franchise, a food critic reported that the pizza was delicious as

    asked on October 10, 2019
  63. science

    an ice cube, a glass of cold water, and a swimming pool are each exposed to the same amount of sunlight on a hot day. after five minutes, the ice cube is melted and the cold drink is two degrees warmer, but the temperature of the swimming pool remains

    asked on February 18, 2016
  64. Organic Chemistry

    A 1.0 gram sample of aspirin will dissolve in 300 mL of water and in 17 mL of chloroform at 25 deg C. a. What is the solubility of aspirin in each solvent expressed in g/mL? (show your calculations) I don't know where to start, does the molecular weight

    asked on February 17, 2015
  65. science

    why did a portion of the table top get cold when Natasha placed her cold drink on the table

    asked on February 18, 2016
  66. math

    Three faucets fill a 100-gallon tub in 6 minutes. How long, in seconds, does it take six faucets to fill a 25-gallon tub? Assume that all faucets dispense water at the same rate.

    asked on July 28, 2016
  67. math

    Raj builds a side table in the shape of a cube. Each edge of the cube measures 20 inches. Raj wants to cover the top and four sides of the table with ceramic tiles. Each tile has an edge length of 5 inches. How many tiles will he need? THANK YOU!

    asked on April 23, 2015
  68. trig

    3tan(3x) = sqrt(3) Solve the equation for exact solutions of the interval [0,2pi).

    asked on November 4, 2010
  69. math

    Explain why it is possible to draw more than two different rectangles with an area of 36 square units, but it is not possible to draw more than two different rectangles with an area of 15 square units. The sides of the rectangles are whole numbers. EXPLAIN

    asked on February 7, 2015
  70. Chemistry

    Estimate the value of the equilibrium constant at 550 K for each of the following reactions. 1) 2CO(g)+O2(g)--->2CO2(g) 2) 2H2S(g)--->2H2(g)+S2(g) i used the equation K=e^(delta G/RT) for the first problem and got K=1.40*10^-49 but it was wrong. Is there a

    asked on April 17, 2010
  71. physics

    A race car, starting from rest, travels around a circular turn of radius 29.3 m. At a certain instant, the car is still accelerating, and its angular speed is 0.621 rad/s. At this time, the total acceleration (centripetal plus tangential) makes an angle of

    asked on October 27, 2008
  72. Kinetic Molecular Theory

    A sample of N2O effuses from a container in 48 seconds. How long would it take the same amount of gaseous I2 to effuse from the same container under identical conditions?

    asked on October 25, 2009
  73. Calculating Vapor Pressure

    The vapor pressure of nitrogen at several different temperatures is shown below. Temperature (K) Pressure (Torr) 65 130.5 70 289.5 75 570.8 80 1028 85 1718 1. Use the data to determine the heat of vaporization of nitrogen in kJ/mol. 2.Determine the normal

    asked on January 17, 2010
  74. math

    Marcus is doing a science experiment in which he measures the rate at which bacteria multiply. Every 15 seconds the bacteria double in number. If there are 10 bacteria now, how many will there be in 2 minutes?

    asked on March 10, 2015
  75. home inspection

    Based on standards of practice guidelines, which of the following home components is normally required to be inspected? A. Awnings C. Storm window B. Storm door D. Balconies

    asked on December 4, 2013
  76. Physics

    A bowling ball encounters a 0.76 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. If the translational speed of the ball is 5.40 m/s at the

    asked on November 3, 2008
  77. Math HELP!

    Jayden opens a savings account with $100.00. His account pays 4% simple interest. How much money will be in his account one year later if he makes no deposits or withdrawals? A.) $96.00 B.) $100.00 C.) $104.00 D.) $148.00

    asked on September 15, 2016
  78. chemistry

    The density of a 2.45 M aqueous methanol solution is .976 g/ml. what is the mass of water present in 1.00 liter of this solution

    asked on October 4, 2011
  79. Physics algebra and trig

    A pair of fuzzy dice is hanging from the rearview mirror of a race car. As the car accelerates smoothly, the strings of the dice are tilted slightly toward the rear of the car. From the perspective of the driver, which one of the following statements is

    asked on October 20, 2016
  80. English

    Complete the sentence with the appropriate word from the spelling list. I a0 that you are an intelligent girl. Not inviting old Aunt Mumby was a serious a0. You might say that Job was a a0 man. I a0 eat dinner by six o'clock. Owning fifty-seven pairs of

    asked on October 6, 2019
  81. math

    A cardboard box is open at one end and is shaped like a square prism missing one of its square bases. The volume of the prism is 810 cubic inches, and its height is 10 inches. A)What is the length of each side of the base? B)Draw a net of the box C)How

    asked on April 28, 2015
  82. chemistry

    a solution is prepared by mixing 50.0 mL toluene (C6H5CH3 d=0.867 g/mL) with 125 mL Benzene (C6H6 d=0.874 g/mL). assuming that the volumes add upon mixing, calculate the mass percent, mole fraction, molality, and molarity of the toluene.

    asked on January 5, 2015
  83. Pre calc

    Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67° 30' 7 sin(67° 30')= cos(67° 30')= 4 tan(67° 30')=

    asked on January 22, 2012
  84. math

    Which of the following is a negation of the statement below? All cats are not mammals. All mammals are not cats. All cats are mammals. Some cats are mammals. All mammals are cats.

    asked on July 16, 2014
  85. Physics

    3 charges are arranged along the x-axis. q1 = -4.50 nC is located at x = 0.200m q2 = +2.50 nC is located at x = -0.300m q3 = is a positive character located at the origin. What is the value of q3 for the net eletric force on it to be 4*10^-6 N? I found the

    asked on January 16, 2012
  86. Physics

    An aluminum ring of radius 5.00 cm and resistance 2.00 10-4 Ω is placed around the top of a long air-core solenoid with 997 turns per meter and a smaller radius of 3.00 cm, as in the figure below. If the current in the solenoid is increasing at a constant

    asked on March 12, 2013
  87. math

    William earns $13 an hour working at a movie theater. Last week he worked h hours at the concession stand and three times as many hours at the ticket counter. Write and simplify an expression for the amount of money William earned last week. THANK YOU!

    asked on February 24, 2015
  88. Calculus

    Find the distance, in feet, a particle travels in its first 2 seconds of travel, if it moves according to the velocity equation v(t)= 6t2 − 18t + 12 (in feet/sec). A. 4 B. 5 C. 6 D. -1 Please helpp, I'm struggling! Thank you in advance for your help!

    asked on June 24, 2019
  89. Statistics

    Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 7.9 ounces and a standard deviation of 1.1 ounces. Suppose Carl bags his potatoes in randomly selected groups of 6. What percentage of these bags should have a mean

    asked on November 3, 2017
  90. physics

    a force of 10 N holds an ideal spring with a 20-N/m spring constant in compression. The potential energy stored in the spring is..? 0.5J, 2.5J, 5.0J, 10J, or 200J? POtential energy? Wouldn't it be 1/2 kx^2, but x= F/k, so 1/2 kx^2= 1/2 k*F^2/k^2 and that

    asked on May 2, 2007
  91. Math

    A box contains a one-dollar bill, a five-dollar bill, a ten-dollar bill, and a twenty-dollar bill. Two bills are chosen in succession without replacement. Use a tree diagram to list the sample space for this experiment and then answer the following

    asked on February 8, 2013
  92. math

    Jose wants to find how many gallons of water he needs to fill his cube-shaped aquarium. One side of his aquarium is 4 feet long. a)Write and solve an expression to find the volume of Jose's aquarium. b)One cubic foot is equal to 7.48 gallons of water. How

    asked on March 10, 2015
  93. chemistry

    calculate the concentration of CO2, in a soft drink after the bottle is opened and equilibriates at 25C under a CO2 partial pressure of 0.0003 atm.

    asked on January 5, 2015
  94. Math

    A contractor requires a cement mix that is 70% sand and 30% cement. He has 700 kg of a cement mix that is 80% sand and 20% cement. How much cement should he add so that he gets the required mix? My set up: required mix = (S)(.7) + (C)(3) 700kg = (S)(.8) +

    asked on August 25, 2011
  95. Chemistry

    The atomic number of an electrically neutral atom is equal to the number of: Choose all that apply. Neutrons Electrons Protons I chose Electrons but somehow my homework program is telling me it's wrong? I also tried checking all of them.

    asked on January 13, 2013
  96. chemistry

    Butane has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 degrees C. A 250mL sealed flask contains 0.5g of butane at 25 degrees C. How much butane is present as a liquid? If the butane is warmed to 25 degrees C, how much is

    asked on December 10, 2010
  97. Math

    The table below represents the velocity of a car as a function of time: Time (hour) x Velocity (miles/hours) y 0 50 1 52 2 54 3 56 Part A: What is the y-intercept of the function, and what does this tell you about the car? (4 points) Part B: Calculate the

    asked on November 25, 2015
  98. physics

    Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.34 kg and a speed of 1.1 m/s . Cart 2 has a mass of 0.68 kg and a speed of 0.55 m/s .

    asked on March 17, 2010
  99. physics

    A 400.0-m-wide river flows from west to east at 30.0 m/min. Your boat moves at 100.0 m/min relative to the water no matter which direction you point it. To cross this river, you start from a dock at point A on the south bank. There is a boat landing

    asked on July 26, 2011
  100. Physics

    "A person is playing a small flute 10.75 cm long, open at one end and closed at the other, near a taut string having a fundamental frequency of 600.0 Hz. If the speed of sound is 344.0 m / s, for which harmonics of the flute will the string resonate? In

    asked on June 4, 2012


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