charlie

Most popular questions and responses by charlie
  1. Chemistry

    The titration of 25.0 mL of an unknown concentration H2SO4 solution requires 83.6 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)? A) 0.40 M B) 0.10 M C) 0.20 M D) 0.25 M E) 0.36 M The answer is supposedly C, but I got A.

    asked on December 8, 2009
  2. History

    Which best analyzes Nixon’s involvement in Vietnam with the decision to pass the War Powers Resolution? a. The My Lai Massacre convinced representatives to force the president to disclose military information. b. The end of the Vietnam War led to a

    asked on August 21, 2018
  3. Chemistry

    Consider the following reaction: 2NiO (s)--> 2Ni(s) + 2O2 (g) If O2 is collected over water at 40.0 C and a total pressure of 752 mmHg, what volume of gas will be collected for the complete reaction of 25.67 g of NiO? I am struggling to set up this

    asked on December 7, 2009
  4. History

    Which best defines petro-economics? a. a nation’s industrial output that stays consistent despite market turmoil b. the influence of oil wealth in shaping economic and political climates c. the gross national product of countries that produce marble and

    asked on August 21, 2018
  5. history

    Which identifies why the Nixon administration decided to bomb Cambodia? a. North Vietnamese troops were using trails into Cambodia to get supplies. b. Cambodia secretly decided to ally with North Vietnam and planned to attack US forces. c. Ho Chi Minh was

    asked on August 21, 2018
  6. Math

    A rectangular prism is being designed to have a volume of 36 cubic units. Find the minimum surface area in square units for the prism if the edge lengths are positive integers.

    asked on June 22, 2017
  7. chemistry

    in the reaction 2Na + Cl2 --> 2NaCl how many grams of NaCl are produced when 25 g. of sodium reacts completely to form NaCl?

    asked on May 17, 2011
  8. history

    Which most accurately describes the Vietnam War? a. Communism spreading in Southeast Asia led to a power struggle between the superpowers that escalated into an ongoing bloody conflict. b. The French occupiers of Vietnam allied with Communist Chinese

    asked on August 20, 2018
  9. history

    What was Japanese Reconstruction? a. It was the decision to end the Japanese monarchy and establish a US-controlled puppet dictator. b. It was the occupation of Japan by the United States to expand military dominance in the Pacific. c. It was an attempt by

    asked on August 21, 2018
  10. Language Arts

    Hello, I need help on this. Please help me. I am not coming here for answers like most people, but if you want to give me the answer then I will gladly except it and edit it into my owns words. For you that are on Connexus, you may need help too. So yeah.

    asked on May 15, 2017
  11. English

    Why is Granny humming again at the end of "Blues Ain't No Mockin Bird"? A) She is angry at the cameramen. B) She is glad Grandaddy got rid of the cameramen. *** C) She always hums when she makes rum cakes.

    asked on December 4, 2017
  12. History

    Please check my answers! 1. Why did some people oppose internment camps during World War II? A. The camps were overcrowded. B. The camps tortured people as prisoners of war. C. There were too many children held in the camps. D. The camps held people who

    asked on February 13, 2019
  13. history

    Which were examples of the counterculture in America in the 1960s? (Select all that apply.) a. Patriotic Americans marched in support of the Vietnam War. b. Feminist groups fought for better positions in the workplace for women. c. The Ohio National Guard

    asked on August 20, 2018
  14. Chemistry

    Uranium-235 can be separated from U-238 by fluorinating the uranium to form UF6 (which is a gas) and then taking advantage of the different rates of effusion and diffusion for compounds containing the two isotopes. Calculate the ratio of effusion rates for

    asked on December 7, 2009
  15. Trig

    A 12 foot ladder leans against a building. The top of the ladder leans against the wall 10.5 feet from the ground. What is the angle formed by the ground and the ladder? Assume its a right triangle.

    asked on April 17, 2013
  16. Calculus

    A trough is 15 ft long and 4 ft across the top, as shown in the figure. Its ends are isosceles triangles with height 3 ft. Water runs into the trough at the rate of 2.5 ft^3/min. How fast is the water level rising when it is 2 ft deep?

    asked on February 6, 2014
  17. Chemistry

    Some hydrogen is collected over water at 10 degrees C and 105.5 kPa pressure. The total volume of the sample was 1.93 L. Calculate the volume of the hydrogen or reacted to STP.

    asked on March 1, 2016
  18. History

    Which reveals problems in South Vietnam during the early 1960s? a. The election of Ho Chi Minh to the presidency caused turmoil and disagreement. b. The corrupt President Ngo Dinh Diem was overthrown and assassinated. c. The Gulf of Tonkin attack led the

    asked on August 20, 2018
  19. Geometry

    Mike and Lani stand 21.2 meters apart. From Mike’s position, the angle of elevation to the top of the Eiffel Tower is 40°. From Lani’s position, the angle of elevation to the top of the Eiffel Tower is 38.5°. How many meters high is the Eiffel Tower?

    asked on February 23, 2013
  20. history

    Which analyzes why some historians believe that the federal civil defense administration used propaganda to reduce the general public concerned about nuclear warfare? a. Historians believe that the FCDA generated reports that underestimated the missile gap

    asked on August 21, 2018
  21. physics

    1.when white light is shone on red ink dried on a glass plate, the color that is transmitted is red. But the color that is reflected is not red. what is it? 2.a spotlight is coated so that it won't transmit blue from its white hot filament. what color is

    asked on March 31, 2011
  22. Physics

    A 10,000N car comes to a bridge during a storm and finds the bridge washed out. The 650-N driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 16.6 m above the river, while the opposite side is a mere

    asked on February 8, 2008
  23. history

    Who was Douglas MacArthur? A. an ambitious commander of Allied forces in Korea who was dismissed by President Truman for his vocal criticisms of Truman’s handling of the war B. a noted statesman and philanthropist who oversaw the rebuilding of postwar

    asked on August 21, 2018
  24. Algebra

    In a recent year, 16.3% of all registered doctors were female. If there were 47,600 female registered doctors that year, what was the total number of registered doctors? Round your answer to the nearest whole number.

    asked on March 30, 2014
  25. gen.science

    A compound containing 3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end products of this equation are carbon dioxide and water. Which chemical or element will have the largest number of moecules?

    asked on June 21, 2010
  26. Physics

    An engine is used to pull a train of two cars out of a mine. The floor slopes upward at an angle of 24o. Each car has a mass of 0.8x104 Kg and normally travels without friction on the tracks. The engine can exert a maximum force of 1.4x105 N on car A. If

    asked on February 24, 2008
  27. AP Physics B

    The position of a 20 g oscillating mass is given by x(t) = (2.0 cm) cos(2t), where t is in seconds. Determine the following. The Amplitude (cm.) The Period (s.) The Spring Constant (N/m) The maximum speed (cm/s) The total energy (J) The velocity at t=0.40

    asked on December 16, 2009
  28. Algebra

    One month Ivanna rented 5 movies and 3 video games for a total of $29. The next month she rented 2 movies and 12 video games for a total of $71. Find the rental cost for each movie and each video game. Rental cost for each movie? Rental cost for each

    asked on March 30, 2014
  29. physics

    If the angular quantities θ,ω,α were specified in terms of degrees rather than radians, how would the kinematics equations for uniformly accelerated rotational motion have to be altered?

    asked on April 11, 2010
  30. statistics

    Three students take equivalent stress tests. Which is the highest relative score? a. A score of 144 on a test with a mean of 128 and a standard deviation of 34. b. A score of 90 on a test with a mean of 86 and a standard deviation of 18. c. A score of 18

    asked on April 3, 2011
  31. math

    how many four letter words can be made fro the letters p,a,y,m,e,n,t with no repetition of any letters?

    asked on September 15, 2013
  32. Precalculus, algerbra 2, investment,

    A stuffed animal dealer tells you that a fish he bought for $8 four years ago is now worth $200 follow the steps below to find the effective yield for this investment. Begin with the equation 8(1+r) ^4=200.Solve for (1+r) ^4 Take the common logarithm of

    asked on February 6, 2019
  33. Literature

    How does Kurt Vonnegut address the concept of equality differently in “Harrison Bergeron” than Martin Luther King Jr. does in “Letter from Birmingham Jail”? What relationship does Vonnegut’s story show between equality and personal

    asked on May 31, 2013
  34. algebra

    Solve this equation for x. 0.5(5-7x) = 8-(4x+6)

    asked on November 18, 2015
  35. Chemistry

    In a titration of 35.00 mL of 0.737 M S, __________ mL of a 0.827 M KOH solution is required for neutralization.

    asked on October 5, 2012
  36. Physics

    Would someone check this please? A circular loop of wire of radius 0.10 m and of resistance 2.0 ~ 10−3 ƒ¶ is in a region where there is a uniform magnetic field B. The field is at 30‹ to the normal to the plane of the wire loop as shown in Figure

    asked on June 18, 2009
  37. Math

    A production crew is assembling a three-level platform inside a stadium for a performance. The platform has the dimensions of 4x long and 2x wide, the middle box has the dimensions of 6x long and 4x wide, and the bottom box has the dimensions of 8x long

    asked on October 9, 2013
  38. precalculus, math, intrest, algerbra 2

    At the show a basketball card dealer tells you that a vintage card increases in value by a factor of 10 every 9 years.If the card is now worth $32, how long ago did she buy it?(Hint: Remember that the value is multiplied by 10 every 9 years, not every

    asked on February 6, 2019
  39. Government

    Why is the power shown in marbury v madison an important part of the us system of government? A. It established the right of the legislature to make laws B. It established the right of the executive to veto laws C. It established the right of the judiciary

    asked on February 15, 2019
  40. Physics

    A merry-go-round with r = 4m and a perfect frictionless bearing is pushed with a force of 24 N by a young girl. She pushes with a constant force that is oriented tangentially to the edge of the merry-go-round. After she pushes the merry-go-round through 14

    asked on April 23, 2012
  41. fourth grade math

    round this number to the nearest thousand 409,614

    asked on September 14, 2011
  42. physics

    while watching ocean waves at the dock of the bay. otis notices that 10 waves pass beneath him in 30 seconds. he also notices that the crests of succesive waves exactly coincide with the posts that are 5 meters apart. what are the period frequency

    asked on February 11, 2011
  43. Physics

    How large a pressure increase (in ATM) must be applied to water if it is to be compressed in volume by 1%? The bulk modulus of water is 2 × 109 N/m2 and 1 ATM = 105 N/m2

    asked on December 10, 2008
  44. Physics

    A movie stunt man (mass 82.3 kg) stands on a window ledge 5.69 m above the floor. Grabbing a rope attached to a chandelier, he swings down to grapple with the movie’s villain (mass 72.3 kg), who is standing directly under the chandelier. (Assume that the

    asked on March 13, 2008
  45. Check 2 of my world history answers??

    star* by my answer 2. All of the following are considered causes of the Great Depression EXCEPT Problems in Agriculture** Uneven distribution of wealth Lack of stock available 7. Hoover believed in which of the following strategies to end the Great

    asked on January 21, 2016
  46. Dimensionless parameters

    The drag, D, on a sphere located in a pipe flow through which a fluid is flowing to be determined experimentally. Assume that drag is a function of the sphere diameter, d, the pipe dianeter, H, the fluid velocity, V, and the fluid density, p. a) What

    asked on March 27, 2014
  47. Algebra

    Compute the following: Let g(x)=3x, and h(x)=x^2+1. h(3) Please show work & help me understand.

    asked on February 14, 2019
  48. Math, algerbra 2, algerbra, precalculus, homework

    You have 4 different investment options 4% interest 7% compound continuously 19% annually 5% every month You have 1000 dollars how long does it take for the value to double in each other investment options? How long does it take until 1000 becomes 1800?

    asked on February 6, 2019
  49. Math, algerbra,precalculus, logaritums

    Is a logarithm always equal to a power? yes or no?

    asked on February 9, 2019
  50. Chemistry

    Why B(CH3)3 cannot be Lewis Base??

    asked on April 8, 2012
  51. Precalculus, algerbra 2, investment,

    You have 4 different investment options 4% interest 7% compound continuously 19% annually 5% every month You have 1000 dollars how long does it take for the value to double in each other investment options? How long does it take until 1000 becomes 1800?

    asked on February 6, 2019
  52. physics

    The two angled ropes used to support the crate in Figure P5.7 can withstand a maximum tension of 1500 N before they break. What is the largest mass the ropes can support?

    asked on October 8, 2012
  53. Chemistry

    In a titration of 35.00 mL of 0.737 M S, __________ mL of a 0.827 M KOH solution is required for neutralization.

    asked on October 5, 2012
  54. Physics

    Ice-hockey star Wayne Gretzky is skating at 12.7 m/s toward a defender, who in turn is skating at 5.39 m/s toward Gretzky. Gretzky’s weight is 677 N; that of the defender is 869 N. Immediately after the collision, Gretzky is moving at 2.21 m/s in his

    asked on March 13, 2008
  55. math.

    Abel ,Belle and Cindy have $408 altogether. Belle has $7 more than Cindy And $5 more than Abel. how much does Abel have?

    asked on November 7, 2018
  56. maths

    there are 12 sweets in a bag. 7 of the sweets are strawberry flavou. 5 of the sweets are lime flavour. harriet takes 2 sweets at random work out the probability that she takes at least one strawberry sweet.

    asked on January 14, 2016
  57. Algebra

    I have these algebra problems that I have been stuck on for over a week, and I'm beginning to fall behind. Any help will be much appreciated. I am told to compute the following: Let g(x) = 3x, and h(x) = x^2 + 1. The first one was g(-1), and I got

    asked on February 26, 2019
  58. physics

    How large a pressure increase (in ATM) must be applied to water if it is to be compressed in volume by 1%? The bulk modulus of water is 2 ~ 10^9 N/m^2 and 1 ATM = 10^5 N/m^2 I think that it is P = bulk modulus * 0.01 because 1/100 = 0.01, which is 1% of

    asked on December 10, 2008
  59. history

    What was the Tet Offensive? a. A combined North Vietnamese and Chinese attack on the American navy in the Gulf of Tonkin b. An all-out invasion of North Vietnam by South Vietnamese and American troops c. An American bombing campaign against Communist

    asked on August 20, 2018
  60. lenses, still stuck!

    I need to calculate the magnification, m of an objective lens, so I can then x it by the eyepiece value for M to get the total magnification. I need v/u (v is dist from lens to image; u is dist of object to lens) I'm using 1/f = 1/v+1/u rearranged for 1/v.

    asked on March 24, 2009
  61. physics

    While her kid brother is on a wooden horse at the edge of a merry-go-round, Sheila rides her bicycle parallel to its edge. The wooden horses have a tangential speed of 6 m/s. Sheila rides at 4 m/s. The radius of the merry-go-round is 8 m. At what time

    asked on September 29, 2008
  62. CHEM

    A 5.00 g sample of Al pellets (specific heat = .89 J/g degrees c) and a 10.00 g sample of Fe pellets (specific heat = .45 J/g degrees c) are heated to 100.0 degrees C. The mixture of hot Fe and Al is then dropped into 97.3 g of water at 22.0 degrees C.

    asked on October 1, 2007
  63. Algebra

    Compute the following: Let g(x)=3x, and h(x)=x^2+1. g(-1) Need help with understanding, please show what you did.

    asked on February 14, 2019
  64. physics

    a jet plane traveling at +87 m/s lands on a runway and comes to ret in 11 s. a)Calculate its uniform acceleration b)Calculate the distance it travels

    asked on November 6, 2012
  65. Physics

    A cannon shoots a shell straight up. It reaches its maximum height, 1,051 feet, and splits into two pieces, one weighing 2 lb and the other 4 lb. The two pieces are observed to strike the ground simultaneously. The 4 lb piece hist the ground 1,608 feet

    asked on March 29, 2008
  66. Algebra

    Let f(x) = 9 – x, g(x) = x^2 + 4, and h(x) = x – 2. g(f(2))

    asked on February 26, 2019
  67. logarithm functions

    use the properties of logarithms to expand the expression as sum, difference or multiple of logarithms. Simplify. a.log(x^3/2) b.log base4 16a

    asked on September 11, 2016
  68. Chemistry

    What volume of coffee (pH =5.0) would be required to have .25 moles of H3O+ ions? (Hint: two step)

    asked on April 25, 2016
  69. Physics

    A 1000 kg car rounds a curve of radius 70 m banked at an angle of 12°. What is the magnitude of the friction force required for the car to travel at 82 km/h?

    asked on September 30, 2013
  70. Physics

    1) Determine the force of gravitational attraction between the earth(m=5.98*10^24kg) and a 70-kg physics student if the student is in an airplane at 4.950 meters above the earth's surface.

    asked on December 6, 2014
  71. Physics

    A cannon shoots a shell straight up. It reaches its maximum height, 837 feet, and splits into two pieces, one weighing 2 lb and the other 5 lb. The two pieces are observed to strike the ground simultaneously. The 5 lb piece hits the ground 1,564 feet away

    asked on March 29, 2008
  72. CHEM

    A 5.00 g sample of Al pellets (specific heat = .89 J/g degrees c) and a 10.00 g sample of Fe pellets (specific heat = .45 J/g degrees c) are heated to 100.0 degrees C. The mixture of hot Fe and Al is then dropped into 97.3 g of water at 22.0 degrees C.

    asked on October 1, 2007
  73. math

    Water is leaking out of an inverted conical tank at a rate of 6700 cubic centimeters per minute at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 meters and the diameter at the top is 3.5 meters. If the

    asked on November 12, 2014
  74. Physics

    A 1.13 kg ball is connected by means of two ideal strings to a vertical, rotating rod. The strings are tied to the rod and are taut. The upper string is 24.0 cm long and has a tension of 31.5 N, and it makes an angle θ2 = 51.0° with the rod, while the

    asked on September 30, 2013
  75. math

    a clock strikes only in the hour (once at 1.00,twice at 2.00 etc) how many times will it strike in one 24 hour day? please explain,thanks

    asked on August 6, 2013
  76. accounting

    Greco Resort Adjusted Trial Balance August 31, 2007 Debit Credit Cash $ 19,600 Accounts Receivable 800 Prepaid Insurance 3,375 Supplies 450 Land 20,000 Building 120,000 Accumulated Depreciation- Building 1,080 Equipment 16,000 Accumulated

    asked on February 5, 2015
  77. physics

    calculate the amount of heat energy required to raise the temperature of a 5kg block of solid platinum from 0 degrees celsius to 25 degrees celsius. the specific heat of platinum is 133j/kg k. how much heat energy is required to raise 5kg of water by the

    asked on January 8, 2011
  78. Chemistry

    I conducted a simple titration experiment and i need to write how and why are the results reproducible can some one help me in answering this. Thankyou C.

    asked on October 17, 2010
  79. Biology

    What differences would you expect to see in a population made up of individuals whose chromosomes experience crossing-over frequently compared with a population made up of individuals whose chromosomes do not cross over?

    asked on January 6, 2010
  80. Physics (checking my thinking)

    2 spheres, of unequal masses, hang on strings and are touching. Sphere a is pulled back to the left, string taught, and released, hitting sphere B at a known velocity. Sphere B's post impact velocity is known, and to the right. i have to find A's post

    asked on December 14, 2008
  81. PLEASE CHECK MY WORLD HISTORY ANSWERS

    star* by my answers 1. This man became President after the 1928 election and became the "face" of the Great Depression in the United States. Theodore Roosevelt Woodrow Wilson Herbert Hoover** 2. All of the following are considered causes of the Great

    asked on January 21, 2016
  82. Algebra

    An algebra teacher is writing a test. There will be two types of questions: multiple-choice and open-ended. The multiple-choice questions take 3 minutes to complete and the open-ended questions take 12 minutes to complete. There must be at least 3

    asked on September 8, 2015
  83. Chemistry

    Calculate Kp at 298K for the reaction SO2 + NO2--->SO3 + NO

    asked on May 1, 2013
  84. math

    a tank is made in the shape of a rectangular prism, measuring 12 cm by 16 cm by 10 cm.It is full of water.A small rectangular prism measuring 2 cm by 3 cm by 4 cm is dropped into the full tank. What is the amout of water which overflows?

    asked on November 17, 2012
  85. physics

    calculate the speed of waves in a puddle that are 0.15m apart and made by tapping the water surface twice each second

    asked on February 11, 2011
  86. Human Anatomy

    What are the bony landmarks of the abdominopelvic cavity?

    asked on January 13, 2009
  87. Physics

    A cannon shoots a shell straight up. It reaches its maximum height, 1,051 feet, and splits into two pieces, one weighing 2 lb and the other 4 lb. The two pieces are observed to strike the ground simultaneously. The 4 lb piece hist the ground 1,608 feet

    asked on March 29, 2008
  88. Geometry

    Find the area of each rectangle wit the given base and height... A=lw 1) 4ft, 4in 2) 30in, 4yd 3) 2ft 3in, 6in 4) 40cm, 2m

    asked on February 25, 2016
  89. math

    what number is 100 times less than 600

    asked on November 17, 2012
  90. Physics

    A 10 kg monkey wishes to climb a 7.15-meter high vine. The vine will break if the tension exceeds 110 N. The monkey starts from rest and exerts a constant force on the rope as he pulls himself upward. What is the shortest amount of time in which the monkey

    asked on April 23, 2012
  91. Physics

    A 25.0-g metal cylinder is placed on a turntable, with its center 70 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is μs = 0.71. A thin, massless string of length 70 cm connects the

    asked on October 7, 2014
  92. Math

    What percentage of the data falls outside 1 standard deviation of the mean?

    asked on June 7, 2011
  93. Chemistry

    You mix 1.00 L of 2.00 M BaCl2 with 1.00 L of 2.00 M AgNO3. What compounds remain in solution, and what are their concentrations?

    asked on March 29, 2011
  94. Physics

    Would someone check this please? A circular loop of wire of radius 0.10 m and of resistance 2.0 x 10^−3 ohms is in a region where there is a uniform magnetic field B. The field is at 30deg to the normal to the plane of the wire loop as shown in Figure 3.

    asked on June 19, 2009
  95. Physics

    An aquarium filled with water has flat glass sides whose index of refraction is 1.48. A beam of light from outside the aquarium strikes the glass at a 43.5º angle to the perpendicular . The angle this light ray enters the glass is 27.7º, what is the

    asked on April 15, 2012
  96. physics

    the lowest frequency we can hear is about 20hz. calculate the wavelength associated with this frequency for sound that travels at 340m/s. how long is this in feet.

    asked on February 11, 2011
  97. Physical Science

    What is cracking and reforming? For what purposes are either or both used by the petroleum industry

    asked on September 29, 2009
  98. Physics

    The last stage in the fusion of hydrogen to form helium in the Sun involves the formation of an ƒ¿-particle (4He) from two 3He nuclei: 3He + 3He ¨ 4He + p + p The binding energy for 3He is 2.57 MeV per nucleon and that for 4He is 7.07 MeV per nucleon.

    asked on June 18, 2009
  99. Physics/Maths

    Keplers third law I understand. T^2/a^3 of one planet = T^2/a^3 second planet. But I can't do the algebra to solve for the second planet's a^3 (semimajor axis) Would someone walk me through the steps please? Thanks.

    asked on June 11, 2009
  100. Physics

    You are stranded in the middle of a frozen pond, 825 m in diameter which is so slippery that your feet slide freely and don't move you. In desperation you write an S.O.S. on your hat, mass 0.6 kg, and fling it towards the north with a velocity of 13 m/s at

    asked on March 28, 2008

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