audrey

Most popular questions and responses by audrey
  1. Math

    1. What is a reasonable distance between two cities? • 200 km

    asked on May 6, 2016
  2. Language Arts

    1. When you paraphrase a line of poetry, what do you do? A.You turn it into a question. B.You put it in your own words. C.You add humor to it. D.You copy it down exactly HELP!!

    asked on February 19, 2016
  3. Trig

    How do you convert rectangular equations into polar equations? If x4−y4=xy , then r2=atan(b); What is a? What is b?

    asked on December 13, 2010
  4. Chemistry

    An analytical chemist weighs out 0.225g of an unknown diprotic acid into a 250mL volumetric flask and dilutes to the mark with distilled water. He then titrates this solution with 0.0700M NaOHsolution. When the titration reaches the equivalence point, the

    asked on November 14, 2016
  5. chemistry

    a cell is constructed by immersing a strip of silver in .10 M AgNO3 solution and a strip of lead in 1.0 M Pb(NO3)2 solution. A wire and salt bridge complete the cell. What is the potential of the silver electrode in the cell?

    asked on December 9, 2010
  6. chemistry

    Calculate the Gibbs free energy change for the reaction below when initial concentrations of CR3+ and Cu2+ are 1 M (F= 96500 J/V mole e-) 2Cr3+ (aq) + 3Cu (s) --> 2Cr (s) + 3Cu2+ (aq) I assume we use the deltaG= -nFE equation, but how do you know n when Cr

    asked on December 9, 2010
  7. Math

    How many perpendicular bisectors can be constructed for a line segment? A. 0 B. 1 C. 2 D. infinitely many I think D!

    asked on February 19, 2016
  8. Chemistry

    When a 6.50g sample of solid sodium hydroxide dissolves in 100.0g of water in a coffee cup calorimeter, the temperature rises from 21.6C to 37.8C. A.) Calculate the quantity of heat (in kJ) released in the reaction. (I know the answer, but can you show the

    asked on March 14, 2017
  9. Math

    Solve:(sec 35 degrees) (csc 55 degrees) - (tan 35 degrees) (cot 55 degrees)

    asked on October 21, 2010
  10. Social Studies

    1. Which BEST describes the differences that divide Maayan and Muhammad? A. age and interests B. physical barriers C. culture and politics** D. economic status 2. How does Maayan most directly experience the conflict in Israel? A. through treating victims

    asked on February 19, 2016
  11. chemistry

    SF4 ---> SF2 + F2 rate constant (k) = .011 l/molxS [SF4]2 How many minutes will it take for the concentration of SF4 to be reduced from 2.5 M to .25 M? I said this was a 2nd order reaction and used : (1/final)= kt + (1/initial) and solved for t. the answer

    asked on December 12, 2010
  12. English- rhyme schemes

    What is the rhyme scheme of William Shakespeare's "Full Fathom Five" and "Where the Bee Sucks There Suck I" ? Most of Shakespeare's poems are in iambic pentameter but these two aren't.

    asked on December 26, 2007
  13. chemistry

    How many grams of MgF2 will dissolve in 150. mL of 0.100 M NaF solution? Ksp for MgF2 = 6.4 x 10-9

    asked on November 15, 2010
  14. MATH

    There are 231 cubic inches in a gallon. A large juice can has a diameter of 6 inches and a height of 10 inches. How many gallons of juice does the can hold? Round your answer to the nearest tenth. I am clueless please please help me!!!!

    asked on May 17, 2011
  15. College Chemistry

    Molarity of .100 mole of urea (CH4N2O) in 250.0 mL of solution

    asked on February 8, 2011
  16. Chemistry

    Calculate the molarity of the H2SO4 solution if 17.45 mL of NaOH was necessary to reach the endpoint of titration. The molarity of the NaOH solution was 0.425 M and 26.30 mL of H2SO4 was added to the Erlenmeyer flask. H2SO4(aq) + 2 NaOH (aq) -----> Na2SO4

    asked on February 25, 2017
  17. chemistry

    If solid AgNO3 is slowly added to a solution that is .05 M in NaI and .12 M in NaCl, what is the concentration of I- when AgCl just begins the precipitate? Ksp for AgCl= 1.8 x 10^-10 Ksp for AgI= 1.5 x 10^-16

    asked on November 13, 2010
  18. Statistics

    The probability that a randomly selected two-year-old male stinkbug will live to be three years old is .59963 what is the probability that to randomly selected two-year-old male stinkbugs will live to be three years old? What is the probability that for

    asked on February 15, 2017
  19. chemistry

    Calculate the value of [H3O+] in a 0.01 M HOBr solution. Ka = 2.5E-9 I'm having a problem with just writing the equilibrium expression. do you add H2O to the HOBr? HOBr + H2O H3O+ + OBr- but then you could say that because HOBr = .01 M, then 0Br- = .01 M,

    asked on November 23, 2010
  20. math

    a back yard is shaped like a parallelogram with a height of 32 feet and a base of 100 feet. One bag of grass seed covers 125 square feet. What is the least number of bags of seed needed to seed the lawn? Also, please explain how you got it.

    asked on May 17, 2011
  21. Calculus

    A water trough is 5 m long and has a cross-section in the shape of an isosceles trapezoid that is 30 cm wide at the bottom, 70 cm wide at the top, and has height 40 cm. If the trough is being filled with water at the rate of 0.2 m3/min how fast is the

    asked on October 18, 2016
  22. Chemistry

    A 15.0 mL sample of 0.250 M H2SO4 is neutralized by 20.5 mL of KOH solution. What is the molarity of the KOH solution?

    asked on October 8, 2012
  23. Chem(redox rxn)

    How do you know which element is being oxidized? Oxidation is lost, Reduction is gained. So in this equation: 2 MnO4^- + 5 C2O4^2- + 16H+ (right arrow) 2 Mn^2+ + 10 CO2 + 8 H2O what element is oxidized? a. no element is oxidized b. Mn c. C d. O my answer

    asked on June 20, 2018
  24. chemistry

    A sample of only solid ammonium chloride was heated in a 1 L container at 500 C. At equilibrium, the pressure of NH3 (g) was found to be 1.75 atm. what is the equilibrium constant, Kc, for the decomposition at this temperature? R= .08206 L atm/K Mol NH4CL

    asked on November 13, 2010
  25. math

    a dollar bill has an area of 15.86 square inches. If a dollar bill is 2.6 inches long, how wide is it? Please explain how you got please!!!

    asked on May 17, 2011
  26. Physics

    Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 1.65 μC charge. (Let A = 1.65 μC, B = 6.60 μC, and C = −4.20 μC.)

    asked on September 5, 2015
  27. College Algebra

    The load L a horizontal beam can safely support varies jointly as the width w and the square of the depth d and inversely as the length l. If a 12-foot beam with width 6 inches and depth 8 inches safely supports 600 pounds, how many pounds can a 14-foot

    asked on January 21, 2013
  28. chemistry

    Calculate the ionization constant, Ka, of phenol (HC6H5O), a weak acid, if a 0.25 M solution of it has a pH of 5.24.

    asked on November 15, 2010
  29. chemistry

    The solubility of Fe(OH)2 is 3.00  10-3 g in 2.00 liters at 18°C. What is its Ksp at 18°C?

    asked on November 15, 2010
  30. statistics

    n=97,x=46;98% confidence

    asked on December 6, 2009
  31. Optimization

    A hunter is at a point on a river bank. he wants to get his cabin, located 19 miles north and 8 miles west. He can travel 5 mph on the river bank and 2 mph on the rough rocky ground.how far upriver should he go in order to reach the cabin in the minimum

    asked on November 6, 2014
  32. chemistry

    What is the value of [OH-] in a 0.015 M CH3COOH solution? Ka = 1.8 x 10-5 I started by writing the equation: CH3COOH + H2O H3O+ + CH3COO- Ka= [H3O+][CH3COO-]/[CH3COOH]= 1.8 E-5 ... Now what? I don't understand where OH relates to this ...

    asked on November 15, 2010
  33. Algebra

    Convert 6^x = 1296 to a logarithmic equation

    asked on August 2, 2009
  34. math

    the base of a rectangular prism is congruent to the base of a pyramid. The height of the pyramid is 3 times the height of the prism. Which figure has a greater volume? Explain. I'm terrible with these kind of word problems. If you could explain that would

    asked on May 18, 2011
  35. chemistry

    the rate of formation of NH3 is .15 mol/Lmin. What is the rate of this reaction? N_2_ + 3H_2_ ---> NH3 the answer should be .075 mol/Lmin.

    asked on December 12, 2010
  36. chemistry

    what is the pH of a solution that is .15 M in HOCl and .25 M NaOCl after .05 mol HCl/L has been bubbled into the solution? this is what I did: HOCl + H2O ----> H3O+ + OCl- .15 .25 -.05 +.05 --------------------------- .1 .30 3.5E-8=[H3O][.3]/[.1] H3O=

    asked on November 23, 2010
  37. chemistry

    The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the reaction mixture with no change in volume, what will be the new equilibrium concentration of N2O4?      N2O4(g) 2 NO2(g)

    asked on November 15, 2010
  38. Statistics

    A statistical test is performed, and its P-value turns out to be about 3%. Which of the following must be true? Pick all that are correct. The null hypothesis is true. There is about a 3% chance that the null hypothesis is true. The alternative hypothesis

    asked on August 4, 2013
  39. Calculus

    1. The problem statement, all variables and given/known data a ball is thrown straight down from the top of a 220 feet building with an initital velocity of -22ft/s. What is the velocity of the ball after 3 seconds? What is the velocity of the ball after

    asked on February 3, 2012
  40. Pre-Algebra

    1)(6.0 × 10 to the 5th power) × (3.0 × 10 to the 4th power) A) 18 × 10 to the 20th power. B) 18 × 10 to the 9th power. C) 1.8 × 10 to the 20th power. D) 1.8 × 10 to the 9th power. 2)(5 × 10 to the -2 power) ÷ (2 × 10 to the 3rd power) A) 2.5 ×

    asked on September 11, 2018
  41. chemistry

    How many grams of potassium formate, KHCOO, must be added to 500 mL of a .07 M solution of HCOOH to produce a buffer solution with a pH of 3.50? given: Ka of HCOOH=1.8 x 10^-4

    asked on November 13, 2010
  42. Chemistry

    Describe the procedure you would follow to determine the concentration of Vitamin C in a sample if the volume of DCPIP required to reach the endpoint was more than the 25-mL flask could hold. Note the titration must still be carried out in the flask. Be

    asked on May 1, 2016
  43. math

    There is a water reservoir beneath a circular garden to supply a fountain in the garden. The reservoir has a 26-inch diameter. The garden has a 12-foot diameter. How much of the garden doesn't contain the water reservoir? I have no idea how to do this

    asked on May 17, 2011
  44. statistics

    The heights of a large population of students have a mean of 60" with a standard deviation of 3". What is the mean of the resulting distribution of sample means for n =16?

    asked on October 17, 2010
  45. math

    Darleen gets $10 a week allowance. She walks her neighbor's dog 6 days each week and earns $3 each day. She earns $7 an hour doing odd jobs. Darleen wants to save $15 a week, give $5 a week to charity, and have at least $20 each week to spend. How many

    asked on February 22, 2016
  46. MATH!!!

    A cooking pot used in the cafeteria weighs 64 pounds when it is filled with soup. How much would a smilar pot witha scale factor of 1/2 weigh when filled with the same soup? would you just do 64 divided by 2? If not then what do i do?

    asked on May 18, 2011
  47. math

    A cooking pot used in the cafeteria weighs 64 pounds when it is filled with soup. How much would a smilar pot witha scale factor of 1/2 weigh when filled with the same soup? would you just do 64 divided by 2? If not then what do i do?

    asked on May 18, 2011
  48. English-Beowulf

    Who is Scyld? Where is he from? Where does he go? What does he do? Why does the poem begin here rather than with Hrothgar and Grendel? Scyld id Beowulf's father. Scyld was a Danidh king from the Scandion Lands. Scyld leaves to protect Lord Frea where he

    asked on August 31, 2007
  49. statistics

    From the MM207 Student Data Set identify the following: a) A variable measured at the nominal level of measurement. b) A variable measured at the ratio level of measurement. c) A variable measured at the ordinal level of measurement

    asked on October 17, 2011
  50. English-Canterbury Tales

    I have to write a compare and contrast essay of 300 to 500 words on two characters. The characters have to be from the Wife of Bath, The Clerk's Tale, or The Merchant's tale. I am having trouble deciding which characters to write about. Which two

    asked on October 2, 2007
  51. algebra 2!

    A swimmer is racing to the other side of the pool. The pool is 75 feet long. The swimmer travels 2.5 feet per second. Create a table, equation, and graph to represent the swimmer's distance to the other side of the pool with relation to time. When will the

    asked on May 5, 2011
  52. chemistry

    what is the [H3O+] of a solution that is .01 M in HOCl and .03 M in NaOCl?

    asked on November 13, 2010
  53. physics

    a freezer in a refrigerator takes 2 hrs to comvert 2.15kg of water initially at 21.5 degrees celsius to just frozen ice. calculate the rate at which the reezer absorbs heat.

    asked on January 20, 2008
  54. maths

    The number of arrangements of five letters from the word 'magnetic' that contain the word net is: a)60 b)100 c)360 d)630 e)720 we're still doing this at school and I still don't get it; since I have to use three of the eight letters I only have five left

    asked on October 19, 2007
  55. MATH

    There are 32 teams in the NFL. Sixteen of the teams are in the American Football Conference (AFL) and the other 16 teams are in the National Football Conference (NFC). At the beginning of the season, Julia tried to predict the teams that would be in each

    asked on September 18, 2011
  56. mAtH

    a cylindrical barrel is 2.8 feet in diameter and 8 feet high. If a cubic foot holds about 7.5 gallons of liquid, how manygallons of water will this barrel hold? Aghhhh! I completely don't get it!!

    asked on May 17, 2011
  57. Algebra

    The function w(x) = – 0.01x^2 + 0.27x + 8.60 can be used to estimate the number of selfemployed workers in the U.S., in millions, x years after 1980. How many self-employed workers were there in the year 1995? A. 9.8 million B. 10.4 million C. 11.15

    asked on July 22, 2009
  58. Chemistry

    Describe the procedure you would follow to determine the concentration of Vitamin C in a sample if the volume of DCPIP required to reach the endpoint was more than the 25-mL flask could hold. Note the titration must still be carried out in the flask. Be

    asked on May 1, 2016
  59. math!!

    a triangular road sign has a height of 8 feet and a base of 16.5 feet. How much larger in area is this sign than one with a height of 4 feet and a base of 8.25 feet? Please fully explain how you got this cause i'm really confused!!!

    asked on May 17, 2011
  60. maths

    Keshawn and Samantha are in a science class with 18 other students. The teacher randomly divides the class into 10 pairs of laboratory partners. Whar is the probability that Keshawn and Samantha are lab partners?

    asked on October 25, 2007
  61. Math

    The equation h=-16t^2+112t gives the height of an arrow, shot upward from the ground with an initial velocity of 112ft/s,where t is the time after the arrow leaves the ground. Find the time it takes for the arrow to reach a height of 120ft. Put in h for

    asked on June 9, 2007
  62. GC

    A circular fountain has a diameter of 12 feet. A 2-foot wide path surrounds the fountain. What is the total area of the fountain and the path around it?

    asked on April 5, 2016
  63. Social Studies, 6th Grade.

    HELP!! I don't know this question: where would you most likely find south america's largest cities? Help! Someone tell me what the answer is!!! HELP!!!! Please help me. Someone answer my question.

    asked on January 5, 2016
  64. physics

    If the force of friction acting on a sliding crate is 79 N, how much force must be applied to maintain a constant velocity? 79N so... What will be the net force acting on the crate? What will be the acceleration?

    asked on October 2, 2011
  65. MATH

    the base of a rectangular prism is congruent to the base of a pyramid. The height of the pyramid is 3 times the height of the prism. Which figure has a greater volume? Explain. I'm terrible with these kind of word problems. If you could explain that would

    asked on May 18, 2011
  66. chemistry

    A(g)+ B(g) C(g) + D(g) Kc= 144. If .4 mol of A and B are placed in a 2 Liter container, what will be the concentration of C at equilibrium? I said the concentration of A= .2 because (.4/2=.2) and because 1 mol of A = 1 mol of C, the concentration of C also

    asked on November 23, 2010
  67. History, Art

    I need to find a picture of 2 paintings: Crimson Rambler by Philip Hale and Automat by Edward Hopper. I also need some assistance with this assignment involving these two paintings. I have to outline a story I would write about the woman in the

    asked on November 15, 2007
  68. maths

    sorry, I know I already asked this, but I called some of my friends and it seems I copied down the homework wrong. The question is the number of arrangements of five letters from the word 'magnetic' that end in a vowel is: A 360 B 420 C 840 D 2520 E 7560

    asked on October 17, 2007
  69. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked on October 5, 2007
  70. Wife of Bath's

    1. Characterize the Wife of Bath's " philosophy" of marriage. Is this philosophy logical from her point of view? How? 2. What elements of the Wife of Bath's tale characterize it as a romance? I don't understand what #1. is asking me so I have no idea how

    asked on September 26, 2007
  71. Spanish

    URGENT!! why is gender important in spanish

    asked on October 15, 2018
  72. Science

    Which of the following is not a modal? A.) An ant farm B.) A bicycle C.) An atlas D.) A plastic human skeleton I'm not really sure what the answer is

    asked on August 23, 2018
  73. Physics

    A rubber ball (mass 0.30 kg) is dropped from a height of 2.0 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.9 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? MAGNITUDE: 3.05 kg

    asked on November 7, 2012
  74. Finance

    Use your knowledge of balance sheets and common-size statements to fill in the missing dollar amounts: ASSETS Cash $25,000 3.4% Accounts receivable $125,000 _____ Inventory _______ 27.1% Total current assets $350,000 ______ Gross plant and equipment

    asked on January 30, 2012
  75. 8th grade math

    There are 32 teams in the NFL. Sixteen of the teams are in the American Football Conference (AFL) and the other 16 teams are in the National Football Conference (NFC). At the beginning of the season, Julia tried to predict the teams that would be in each

    asked on September 18, 2011
  76. math

    a triangular road sign has a height of 8 feet and a base of 16.5 feet. How much larger in ares is this sign than one with a height of 4 feet and a base of 8.25 feet? Please explain fully and show how you got the answer.

    asked on May 17, 2011
  77. chemistry

    1.00 mol of A and 2.00 mol of B are placed in a 5 Liter container. after equilibrium has been established, .50 mol of D is present in the container. What is the equilibrium constant, Kc? A + 2B 2C + D

    asked on November 13, 2010
  78. Communication Studies

    Consider the issue and implications of intentional news media bias. Why are large segments of the American news media audience either unable or unwilling to be better critical media consumers?

    asked on October 28, 2009
  79. Organic Chemistry 1

    Why does iodine absorb organic molecules? This question is referring to the effect of the iodine chamber used in TLC.

    asked on October 24, 2008
  80. English - Beowulf

    Who is Scyld? Where is he from and where does he go? What does he do? My problem is the version of Beowulf I read did not begin with a character named Scyld. There was actually no character by this name. At the beginning of the story I read there was a

    asked on August 30, 2007
  81. Geometry

    The length of a rectangle is 1cm longer than its width. If the diagonal of the rectangle is 4cm, what are the dimensions(the length and the width)of the rectangle? L=W-1 Diagonal = sqrt(L^2 + W^2) substitutuet for L in the second equation, solve for W.

    asked on June 9, 2007
  82. Math

    which property is shown by 0+9=9 A.) Distributive Property B.) Commutative Property of Addition C.) Identity Property of Addition D.) Associative Property of Addition I think its A but I'm not really sure

    asked on August 24, 2018
  83. Spanish

    ¿Cómo son las monedas de pesos mexicanos?We had to do a reading and type the answers-not sure about this question Hay monedas de un peso, cinco pesos, diez pesos y de centavos. ¿En cuáles países se usa el dólar estadounidense? Panamá y Puerto Rico y

    asked on February 21, 2012
  84. math

    3 boxes are in a room. You know that one contains apples, one contains oranges, and one contains both apples and oranges, nut you don't know the contents of the specific boxes. The boxes are labeled, "apples," "oranges," and "apples and oranges," but each

    asked on August 21, 2011
  85. math

    three boxes are in a room. You know that one contains apples, one centains oranges, and one contains a mixture of apples and oranges, but you don't know the contents of the specific boxes. The boxes are labeled "apples","oranges", and "apples and oranges",

    asked on August 20, 2011
  86. Chemistry

    Find the pH of a solution prepared by taking a 50.0 mL aliquot of a solution prepared by dissolving 12.25g of NaOH and 250.0 mL of water and diluting that aliquot to 1.00L?

    asked on January 20, 2011
  87. chemistry

    How do you know that from this list, F2 is the strongest oxidizing agent? Mg2+ Mg F2 F- H+ Why is F- the weakest reducing agent from this list? Al3+ Al F2 !@#$%^&+

    asked on December 9, 2010
  88. chemistry

    A(g)+ B(g) C(g) + D(g) Kc= 144. If .4 mol of A and B are placed in a 2 Liter container, what will be the concentration of C at equilibrium? I said the concentration of A= .2 because (.4/2=.2) and because 1 mol of A = 1 mol of C, the concentration of C also

    asked on November 23, 2010
  89. Algebra

    Which of the following describes the end behavior of the graph of the function f(x) = –2x^5 – x^3 + x – 5? A. Downward to the left and upward to the right B. Upward to the left and downward to the right C. Downward to the left and downward to the

    asked on July 20, 2009
  90. physics

    an immersion heat can supply heat at a rate of 5.2 x 10 to the power of 2 joules per second. calculate the time that it wil take to completly evaporate 1.25 x 10 to the power of minus 1 kg water initially at a temperature of 21 degrees celsius

    asked on January 20, 2008
  91. maths

    I have an illustration in my book of a quadrilateral inside a circle. The quadrilateral is ABCD; AB is a vertical line and then AC and BD are the same length, but AC slopesd downward and BD upwards. Finally, there's CD; it's not vertical, as it slopes

    asked on October 25, 2007
  92. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked on October 4, 2007
  93. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked on October 3, 2007
  94. english beowulf

    Who destroyed the Heorot and how? My answer: I think Grendel destroyed the Herot but I am not sure how. This story is hard to comprehend!

    asked on August 31, 2007
  95. Social Studies

    The Continental Army gained a knowledge of professional tactics and drill from a Prussian military mercenary, ______________________ a Major General Charles Lee b General George Washington c Baron Friedrich Wilhelm von Steuben d Marquis de Lafayette

    asked on October 16, 2018
  96. math

    What is the best order-of-magnitude estimate for 0.000002?

    asked on September 15, 2015
  97. Statistics

    The distribution of cholesterol levels of the residents of a state closely follows the normal curve. Investigators want to test whether the mean cholesterol level of the residents is 200 mg/dL or lower. A simple random sample of 12 residents has a mean

    asked on August 4, 2013
  98. math

    what are two equivalent fractions for 10/13??

    asked on January 15, 2013
  99. statistics

    Using measures of center and measures of variability compare the number of hours on school work (Q11) and the number of hours watching television (Q14). a) Which variable has greater variability? How do you know? b) What number of hours on school work

    asked on October 18, 2011
  100. math

    At the county fair, the apple pies are lined up side-by-side for juding on a 6-foot table. Each pie has an area of 50.24 inches squated. How many pies are on the table? I don't understand how to solve this problem. Please explain and show me how

    asked on May 17, 2011

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