Felix

Most popular questions and responses by Felix
  1. chemistry

    The reaction CHCL3(g)+CL2(g)_CCL4(g)+HCL(g) has the following rate law:Rate =k [CHCL3][CL2].If the concentration of CHCL3 is increased by a factor of five while the concentration of CL2 Is kept the same use a mathematical equation to show the factor by

    asked on August 20, 2016
  2. Chemistry

    Which contains more solute particles a 0.10 M aqueous solution of methanol (CH3OH) or a 0.10 M aqueous solution of table salt (NaCl)? Are we supposed to go M*L=moles*(6.022*10^23 solute particles)

    asked on November 3, 2018
  3. chemistry

    The equations for the heats of the formation of copper (I) oxide,Cu2O and copper(II) oxide,CuO are: 2Cu(s) +1/2 O2(g) CuO(s); ∆Hof =-166.7kj/mol Cu(s) +1/2 O(g) CuO(s); ∆Hof= -155.2kj/mol The first and second ionisation energies of copper are 750 and

    asked on October 4, 2015
  4. Geometry

    The second-largest state in the US is Texas, covering 268,580 square miles (including water). What is the approximate radius of a sphere with the same surface area as the area of Texas?

    asked on October 24, 2014
  5. Chemistry

    Calculate the molar concentration of uncomplexed Zn2+ (aq) in a solution that contains 0.22 mol of Zn(NH3)4 2+ per liter and 0.3109 M NH3 at equilibrium. Kf for Zn(NH3)4 2+ is 2.9 X 10^9 I started this way... (0.3109 + 4)2/0.22-x)= 2.9 X 10^9

    asked on March 18, 2013
  6. math

    the melt in your mouth chocolate factory sells three times as many mints as it sells almond bars.it sells half as many almond bars as it sells caramels.if it sells 3,750 cases of mints each month,how many caramels does it sell in one month

    asked on September 20, 2011
  7. Chemistry (reposting)

    In which of the following solution would CaC2O4 have the highest molar solubility? Please help. A) 0.01 M NaCl B) 0.01 M H2C2O4 C) 0.01 M Na2C2O4 D) 0.01 M NaHC2O4 E) 0.01 M HCl I think it is E because it is a strong acid and will completely dissociate

    asked on March 18, 2013
  8. chemistry

    If 50.0 g of sodium bicarbonate is reacted and 11.0 g of carbon dioxide is produced, what is the percent yield of carbon dioxide? 2NaHCO3 --> Na2CO3 + CO2 + H2O

    asked on April 6, 2011
  9. algebra

    Suppose that x varies directly as y ^2 and inversely as z, and x is 5 when y is 3 and z is 3. What is z when x is 10 and y is 3?

    asked on April 11, 2019
  10. science

    A solution contains 2 mEq/mL of KCL (Molecular weight 74.5). If a 20 mL ampule of this solution is diluted to 1 liter what is the percent strenght of the resulting solution?

    asked on January 14, 2013
  11. math

    the arcade has three pinball machines and five video games.If a person wants to play one pinball machine and one video game,how many different combinations of games could that person play?

    asked on October 4, 2011
  12. algebra

    The strength of a rectangular beam varies jointly as its width and the square of its depth. If the strength of a beam 10 inches wide by 20 inches deep is 3400 pounds per square inch, what is the strength of a beam 9 inches wide and 18 inches deep?

    asked on April 10, 2019
  13. Math

    Three towns A,B&C are located such that the distance between A&B is 15km and the distance between A&C is 90km, if the bearing of B from A is 075 and the bearing of C from A is 310. (a) draw the diagram (b) find the distance between B and C (c) find the

    asked on June 1, 2019
  14. algebra

    The volume V of a gas varies directly with the reciprocal of the pressure P. What happens to the volume of the gas if the pressure is tripled?

    asked on April 10, 2019
  15. economics

    A professor of economics gives multiple choice exams each semester. He curves the exams by giving the maximum possible points to the high score on the exam. For example, if a 50 question exam is worth 100 points and the top score in the class is 40, then

    asked on November 24, 2009
  16. algebra

    The frequency of oscillations of a pendulum varies inversely as the square root of the length of the pendulum. If a pendulum of length 25 feet oscillates with a frequency of 100 swings per minute, what would be the frequency of a pendulum of length 16

    asked on April 11, 2019
  17. Chemistry

    Calculate the molar concentration of uncomplexed Zn2+ (aq) in a solution that contains 0.22 mol of Zn(NH3)4 2+ per liter and 0.3109 M NH3 at equilibrium. Kf for Zn(NH3)4 2+ is 2.9 X 10^9 I started this way... (0.3109 + 4)2/0.22-x)= 2.9 X 10^9 I'm lost and

    asked on March 17, 2013
  18. algebra

    The strength of a rectangular beam varies jointly as its width and the square of its depth. If the strength of a beam 4 inches wide by 12 inches deep is 1800 pounds per square inch, what is the strength of a beam 5 inches wide and 12 inches deep?

    asked on April 11, 2019
  19. network analysis

    Point A and B are 0.1m apart. A Point charge of +3.0*10^-9 c is placed at A and a point charge at -1.0*10^-9c B. X is the point on the straight line between A and B where the electric potential is zero. calculate the distance AX

    asked on September 21, 2014
  20. physics

    A 8.72 kg particle moves from the origin to position C , having coordinates x = 2.04 m and y = 2.04 m as shown in Figure 1. A particle moving in a horizontal plane from the origin to position C experiences a friction force with constant magnitude 2.32 N.

    asked on November 19, 2018
  21. english

    possessive pronouns of martha katz's?

    asked on February 13, 2013
  22. Math

    A boat starts out at 20km/h in direction 30 degrees. However, the boat is blown off course by a 12km/h wind blowing from 80 degrees. What direction does the boat now travel in and how far does it travel in one hour?

    asked on October 1, 2016
  23. Maths

    In how many ways can a family of seven sit round a table if the mother and father must sit together?

    asked on March 22, 2019
  24. math

    Polk Elementary School has three classes for each grade level,kindergarten through fifth grade.If there is an average of 27 students per classroom,about how many students attend Polk Elementary School?

    asked on September 14, 2011
  25. math

    on monday 86 science fiction books were sold at a book sale this is 8 more than twice the amount sold on thursday how many science fiction books were sold on thursday

    asked on November 29, 2010
  26. business math

    Shantel and Kwamie are planning to buy their first home. Although they are excited about the prospect of being homeowners, they are also a little frightened. A mortgage payment for the next 30 years sounds like a huge commitment. They visited a few new

    asked on June 29, 2017
  27. math

    write in scientific notation 35,000 and 982,000,000

    asked on September 15, 2011
  28. computer

    write a pseudocode to list any 25 integer and display both negative and positive

    asked on November 1, 2016
  29. Chemistry

    In which of the following solution would CaC2O4 have the highest molar solubility? Please help. A) 0.01 M NaCl B) 0.01 M H2C2O4 C) 0.01 M Na2C2O4 D) 0.01 M NaHC2O4 E) 0.01 M HCl I think it is E because it is a strong acid and will completely dissociate..

    asked on March 17, 2013
  30. calculus

    If g is a differentiable function such that g(x) is less than 0 for all real numbers x and if f'(x)=(x2-4)g(x), which of the following is true? f has a relative maximum at x=-2 and a relative minimum at x=2, f has a relative minimum at x=-2 and has a

    asked on January 2, 2011
  31. Math

    Eight students are running for three positions in the student council: president, vice president, and secretary. Which represents the total number of ways the three students can be selected if each student can be elected to only one position? A. 8x3 B.

    asked on July 19, 2018
  32. Physics

    how much heat is needed to vaporize a 400.0 g of liquid water at 310.0 K?

    asked on September 23, 2015
  33. Math

    Hello, I'm not sure how to do this question. Question A wheel with radius 5 cm is being pushed up a ramp at a rate of 4 cm per second. The ramp is 620 cm long, and 180 cm tall at the end. A point P is marked on the circle as shown How far does the wheel

    asked on June 14, 2017
  34. Sociology

    Is Ghana a classless society?

    asked on April 3, 2017
  35. math

    what are the three smallest 7 digit whole numbers that can be made using only the digits 4,3,0,9,2,8,and 5? Each digit must be used exactly one time in each number.

    asked on August 25, 2015
  36. math

    8(x+1/2)=2x+4

    asked on January 11, 2012
  37. math

    (from current question)14x+20y+negative17y+negative17x

    asked on November 16, 2011
  38. math

    5x+negative13x+6x+4x

    asked on November 16, 2011
  39. science

    How many years after voyage 2's launch was it before scientists could view its photographs of Uranus?

    asked on October 14, 2011
  40. math

    convert 15% into a fraction

    asked on October 3, 2011
  41. math

    the decimal for 15%

    asked on October 3, 2011
  42. math

    What the density of 16/2

    asked on September 21, 2011
  43. math

    square root of 64 and the square -64

    asked on September 20, 2011
  44. math

    what is the fraction form of 5.1

    asked on September 14, 2011
  45. English

    What has a lot of power and start with with a "s" and ends with a "l".

    asked on March 2, 2011
  46. Math

    The points P(-2,2) , Q(4,4) and R(5,2) are vertices of a Triangle. The perpendicular bisector of PQ and the line through P parallel to QR intersect at S. Find the coordinates of S.

    asked on September 13, 2017
  47. Physics

    (5x^-3)^2

    asked on September 5, 2012
  48. English

    (This homework question has been removed because it was copied directly from a test.)

    asked on November 28, 2011
  49. Geometry

    Explain whether the following statement is a valid definition: “A 30° angle is an acute angle.” Use the converse, biconditional, and at least one Euler diagram to support your answer.

    asked on November 28, 2011
  50. math

    a percent for 3/8

    asked on October 3, 2011
  51. math

    Mr.Garica's class is harvesting the school garden.The rectangular garden is twenty-five feet by fifteen feet.What is the area of the garden?

    asked on September 26, 2011
  52. math

    square roots to the nearest tenth of 42

    asked on September 20, 2011
  53. math

    find the prime factorization of 175

    asked on September 20, 2011
  54. math

    what is the scientfic notation of35,000and982,000,000

    asked on September 15, 2011
  55. math

    which of the following numbers are integers?8,1-1/2,0,-1,3.1

    asked on September 14, 2011
  56. psychology

    can printing technology as a course put food on your table

    asked on May 14, 2018
  57. psychology of Education

    How do a person become back? Or what is the main element disturbed in a person for him/her to be mad? And what causes madness.

    asked on July 25, 2017
  58. Math Trig

    I can't seem to get the right answer on my assignment. I keep on getting 276.403 and seem to get it wrong. Please help. Suppose that cot(θ)=−8.91 and 0∘≤θ

    asked on May 29, 2017
  59. Physics

    A tugboat pulls a ship with a constant horizontal force of 6000N and causes the ship to move through a harbor. The water exerts a constant drag force on the ship of 500N. How much work is done on the ship if it moves a distance of 4.0 km? Force is causing

    asked on December 16, 2015
  60. math

    how many flowers can be planted in a flower bed 13 ft long at 13 inches apart?

    asked on August 6, 2015
  61. Physics

    A plane has a max speed of 200 km/h. What is the maximum speed it can travel due west if there's a northwest wind at 50 km/h?

    asked on January 22, 2015
  62. d,m,v

    whats the volume of benzene.?

    asked on September 13, 2014
  63. Math

    Suppose you are comparing two numbers that are greater than 1,000. You want to find the smaller of the numbers. How many pairs of digits might you have to compare before you have your answer? Explain.

    asked on September 5, 2013
  64. math

    30=3c+2(3c-3

    asked on December 13, 2011
  65. math

    3(d+2)-d=16

    asked on December 13, 2011
  66. math

    (from current question)5x+negative13x+6x+4x simplify

    asked on November 16, 2011
  67. math

    14x+20y+negative17y+negative17x

    asked on November 16, 2011
  68. math

    what is the percent of 438 to 789

    asked on October 20, 2011
  69. math

    how you figure percents like percent of438 to 789

    asked on October 20, 2011
  70. math

    fraction for15%

    asked on October 3, 2011
  71. math

    i need the fraction for3/8

    asked on October 3, 2011
  72. math

    a percent for 0.9 decimal

    asked on October 3, 2011
  73. math

    a fraction for 0.9 decimal

    asked on October 3, 2011
  74. math

    find a fraction of 20%

    asked on October 3, 2011
  75. science

    why do you think that people choose to live in places where earthquakes are common

    asked on September 27, 2011
  76. math

    how many feet are in 261.32 yards

    asked on September 20, 2011
  77. math

    what is 1/3of 98

    asked on September 20, 2011
  78. math

    the melt in your mouth chocolate factory is a rectangular building.The distence across the front of the store is 98 yards.The distance from the front to the back one-third of this distance.If the owners paint a sign all the way around the outside of the

    asked on September 20, 2011
  79. math

    find the square root to the nearest tenth of 13

    asked on September 20, 2011
  80. math

    the two square roots of 9 are 3 and what

    asked on September 20, 2011
  81. math

    i need to complete a venn diagram using the numbers 20-35 please help me drawing a venn diagram.

    asked on September 20, 2011
  82. math

    what is the scientific notation for 1,890,000 and 7,426,000

    asked on September 20, 2011
  83. math

    i need to cmplete a venn digram of composite and odd using the numbers 20-35.

    asked on September 20, 2011
  84. algebra

    25 divided 0.76 in long formed

    asked on September 11, 2011
  1. algebra

    What is L?

    posted on April 12, 2019
  2. algebra

    wait a sec but a still don't get it.

    posted on April 11, 2019
  3. algebra

    Thank you yur soooo helpful!!!

    posted on April 11, 2019
  4. Chemistry

    What is it?

    posted on October 11, 2018
  5. physics

    487.3

    posted on May 14, 2018
  6. physics

    -487.3

    posted on May 14, 2018
  7. psychology

    yes write in details

    posted on May 14, 2018
  8. English

    "My brother, sister, and I grew up in a very nature-friendly atmosphere." The comma after sister is sometimes optional, depending on who you talk to.

    posted on March 15, 2018
  9. Social Studies

    Whatever you want to get a few wrong so that they don't think you're some type of Super human

    posted on February 15, 2018
  10. social studies plz help.

    He has a good point there

    posted on February 15, 2018
  11. science (weather & climaate

    There are 20 questions on the quiz two of them are essay questions and the first question is water condenses onto the grass in the early morning when the air is clean because also one of your other people have done this before but I think she needs help

    posted on February 15, 2018
  12. science

    Can I get some help on this test

    posted on February 15, 2018
  13. Math

    Is this correct

    posted on February 12, 2018
  14. Math

    But there 8 questions you guys only put 7

    posted on February 5, 2018
  15. English

    What are the answers for introducing the big question lesson 1 language arts 6 B unit 2 Rhythm and rhyme pretest

    posted on January 28, 2018
  16. english

    steve

    posted on January 11, 2018