Most popular questions and responses by Ashleigh
  1. Statistics

    If the correlation coefficient is 0.790, what is the explained variation? A. 37.6% B. 62.4% C. 79% D. 21%

    asked on December 11, 2011
  2. Social Studies

    describe two ways some caribbean families preserve their cultural traditions

    asked on October 20, 2009
  3. Algebra 2

    The graph shows a probability distribution. Which probabilities are equal to 0.3? Select each correct answer. P(X≥3)

    asked on October 20, 2016
  4. Science

    A metal object with a mass of 19g is heated to 96 degrees celcius, then transfered to a calorimeter containing 75 g of water at 18 degrees celcius. The water and metal object reach a final temperature of 22 degrees celcius. What is the specific heat of

    asked on September 24, 2013
  5. Chemistry

    The gaseous product of a reaction is collected in a 25.0-L container at 27 C. The pressure in the container is 216 kPa, and the gas has a mass of 96.0 g. What is the molar mass of the gas?

    asked on December 15, 2010
  6. physics

    Estimate the force with which a karate master strikes a board if the hand's speed at time of impact is 4.78m/s, decreasing to 1.55m/s during a constant time of 0.00239 s with the board. The mass of coordinated hand and arm is 0.701 kg. Answer in units of

    asked on October 26, 2010
  7. Math

    A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 24 ft, find the value of x so that the greatest possible amount of

    asked on November 14, 2011
  8. Chem-organic, bio, intro

    A gas mixture contains oxygen and argon at partial pressures of 0.60 atm and 425 mmhg. If nitrogen gas added to the sample increases the total pressure to 1250 torr, what is the partial pressure in Torr of the Nitrogen added? Steps for solving this problem

    asked on October 16, 2011
  9. Chemistry I

    Determine the hydronium ion concentration in a solution that is 0.00018 M Ca(OH)2. Answer in units of M

    asked on March 11, 2013
  10. physics

    a lead bullet is placed in a pool of mercury. what fractional part of the volume of the bullet is submerged?

    asked on October 30, 2010
  11. Math

    The school band is comprised of middle school students and high school students, but it always has the same maximum capacity. Last year the ratio of the number of middle school students to the number of high school students was 1:8. However, this year the

    asked on September 3, 2014
  12. math

    THE HUMAN CANNONBALL - AGAIN! (2 pts) On July 23, 1997, Washington County, in Oregon was advertising their Fair & Rodeo special attraction on the Internet: "As the countdown begins, David Smith, Jr. - THE BULLET - puts on his safety helmet, slides down the

    asked on November 9, 2009
  13. Math

    A girl is three years older than her brother. If their combined age is 35 years, how old is each?

    asked on October 22, 2013
  14. Math

    Ace's grandfather is 3 years older than Ace's grandmother. Their combined age is 121 years. How old is each?

    asked on October 23, 2013
  15. physics

    Blood of density 1010kg/m^3 that is to be administered to a patient is raised about 1.51 m higher than the level of the patient's arm. How much greater is the pressure of the blood than it would be if the container were at the same level of the arm? The

    asked on October 26, 2010
  16. physics

    An unclothed student is in a 27 degree Celsius room. If the skin temperature of the student is 37 degree Celsius, how much heat is lost from his body in 18 minutes, assuming that the emissivity of the skin is 0.91 and the surface area of the student is 1.7

    asked on November 20, 2010
  17. pre-calculus


    asked on December 4, 2014
  18. physics

    Glycerin in water diffuses along a horizontal column that has a cross-sectional area of 2.3cm^2. The concentration gradient is 0.028 kg/m^4, and the diffusion rate is found to be 5.8 x 10 ^-15 kg/s find the diffusion coefficient in units of m^2/s.

    asked on November 1, 2010
  19. Chemistry

    How much heat is required to vaporize 1.00 L of CCl4 at its normal boiling point? The following data are given for CCl4. Normal melting point, -23 degree celcius , normal boiling point, 77 degree celcius density of liquid 1.59 g/mL; ; enthalpy of fusion

    asked on December 8, 2008
  20. Chemistry

    Express the concentration of a 2.0 M NaOH solution as a mass/volume percent.

    asked on May 29, 2012
  21. Math 1330

    In a survey of 1000 eligible voters selected at random, it was found that 200 had a college degree. Additionally, it was found that 90% of those who had a college degree voted in the last presidential election, whereas 47% of the people who did not have a

    asked on April 9, 2012
  22. physics

    The motion of a certain simple harmonic oscillator is described by: x(t) = (12 cm) sin [(1 s ^(-1)) t] What is the earliest time t > 0 or t = 0 at which the oscillator's velocity is zero?

    asked on November 1, 2010
  23. science

    How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 700. mL of 1.294-M solution of NH3 in order to prepare a pH = 9.70 buffer? (pka of NH3 = 9.25)

    asked on November 2, 2007
  24. Chemistry

    What is the osmotic pressure of a solution made from dissolving 60.0g of glucose, C6H12O6, in 450 mL of water at 10.0∘C?

    asked on September 2, 2014
  25. statistics

    The first sample had 49 subjects and 7 had blue eyes. The second sample had 465 subjects and 244 of these had blue eyes. What is the value of the pooled estimate of the proportion used to test the hypothesis that the population proportions of blue eyes are

    asked on June 26, 2012
  26. Chemistry

    Express the concentration of a 2.0 M NaOH solution as a mass/volume percent. Can you please explain how to get the answer?

    asked on May 29, 2012
  27. Chemistry

    a 20.0ml sample of HCL solution is placed in a flask with a few drops of indicator. If 30.0ml of a 0.240 M NaOH solution is needed to reach the endpoint, what is the molarity of the HCL solution?

    asked on April 15, 2013
  28. physics

    Compressing gases requires work and the resulting energy is usually converted to heat; if this heat does not escape, the gas's temperature will rise. This effect is used in diesel engines: The compressed air gets so hot that when the fuel is injected, it

    asked on November 8, 2010
  29. Math

    A census-taker rings Mr. Manning's bell and asks how many children he has. "Three daughters," he replies. "And how old are they, in whole numbers?" asks the census-taker. "Well, I'll tell you this:the product of their ages is 72, and the sum of their ages

    asked on September 24, 2009
  30. physics!!!

    A copper rod is given a sharp compressional blow at one end. The sound of the blow, traveling through air at -2.79 degrees Celsius, reaches the opposite end of the rod 9.39ms later than the sound transmitted through the rod. What is the length of the rod?

    asked on November 8, 2010
  31. math

    What is the improper fraction 61/7 written as a mixed number ?

    asked on December 29, 2009
  32. art

    for my homework assignment i have a picture of Michaelangelo , creation of Adam painting i have to describe what i think is happening in the painting and also write a story about the painting . Ive described the painting but i am struggling with the story

    asked on January 2, 2009
  33. Maths

    Explain why a multiple of 80 is also a multiple of 8.

    asked on January 23, 2017
  34. Physics

    A 4-person bobsled team pushes the 330 kg sled down the 6.0 degree hill with a force of 1780 N. The coefficient of friction for ice and the runner is 0.135. How fast will the sled be moving at the end of the 40m push? Answer is in meters/second

    asked on April 9, 2015
  35. Math

    A committee of 100 Democrats is formed with 22 members from the East, 38 members from the Midwest, and 40 members from the West. If a random sample of 3 members from this committee is selected, what is the probability to the nearest percent that all 3 are

    asked on February 12, 2015
  36. Math

    Set up and solve a system of equations to solve the application. A rectangular area of 525 square feet is enclosed using 100 feet of fence. What are the dimensions?

    asked on December 1, 2014
  37. Chemistry

    What volume of water should be added to 500 mL of a 1.0 mol/L CuSO4 solution to dilute it to 0.5 mol/L?

    asked on May 29, 2012
  38. Phys

    Ok...this is a super dumb question, but is an electric field best described as fact, hypothesis, theory or all of these? I think that it is fact, since there are means of measuring the electric field of something, but I could be wrong. They have found

    asked on February 5, 2011
  39. science

    How does osmosis explain the fact that a watery syrup forms when you put sugar on strawberries? I searched Google under the key words "osmosis" to get these possible sources: (Broken Link Removed) I hope this helps.

    asked on January 12, 2007
  40. Organic Chemistry

    Hello everyone. I have a question that I am having difficulty answering. I can not figure out the synthesis of MELPHALAN, a cancer fighting drug. If anyone has a clue, please help! Thanks, Ashleigh

    asked on November 12, 2011
  41. Math

    I'm helping my daughter with Algebra homework and I've forgotten how to solve the following. x/2-12 = -3 + x Can someone help

    asked on October 13, 2011
  42. math

    The price of an antibiotic decreased from $86.25 to $52.75 for a bottle of 100 tablets. Find the ratio of the decrease in price to the original price.

    asked on June 28, 2010
  43. resume (education)

    I have to make a resume and my teacher wants us to include any professional memberships. Does honor society (in college) count? If not, please include some examples of professional memberships. Thank you!

    asked on May 10, 2010
  44. Physics

    If the change in position Dx is related to velocity v (with units of m/s) in the equation Dx = Av, the constant A has which dimension? a. m/s^2 b. m c. s d. m^2 I chose b?

    asked on November 4, 2009
  45. physical science

    How far can a person run in 15 minutes if they run at an average speed of 16km/hr?

    asked on January 24, 2008
  46. Science

    From a laboratory process designed to separate water into hydrogen and oxygen gas, a student collected 11.9 g of hydrogen and 78.5 g of oxygen. How much water was originally involved in the process?

    asked on October 23, 2015
  47. Physics

    You're driving along at 101 km/hr on a rainy day. Suddenly a deer jumps out 30 m ahead of you. You slam on the brakes of your 1972 Mustang (no ABS) with Goodyear tires (coefficient of kinetic friction= 0.525, coefficient of static friction=0.750). Will you

    asked on April 9, 2015
  48. english

    his expression showed how highly he valued his own opinions and scored the view of the others. smug?

    asked on December 4, 2012
  49. Science

    How is the air motion in the eye of a hurricane similar to the air motion at a high pressure center?

    asked on September 18, 2010
  50. 4th grade science

    My science homework questions is: You measure the boiling temperature of 3 clear liquids. 1 of them boils at 100C. The other 2 at 85C and 115C. How can you use numbers to identify the first liquid? Can someone help?

    asked on September 30, 2008
  51. Math

    What might the lengths of a horse enclosure border be if the area of the enclosure is 52 square yards?Be sure to give evidence to support your thinking. Draw a picture to support your answer?

    asked on February 18, 2016
  52. Physics

    A student is swinging a 9 kg ball in a circular path in the vertical plane. Consider the instant when the string is horizontal as the ball is on its way up as shown in the figure. At this instant, the instantaneous tangential speed is 6 m/s, and the radius

    asked on October 12, 2014
  53. science

    What are three methods scientists use to form scientific explainations ?

    asked on October 11, 2011
  54. economics

    according to the law of demand,when the price of an item goes up,the quality demanded?

    asked on January 12, 2011
  55. 6th grade

    What is the simple and complex for this sentence. Making a bad grade on such an easy spelling test is such an embarrassment.

    asked on September 21, 2010
  56. physical education

    famous dancers or dances in relation to hip hop.

    asked on April 23, 2009
  57. science

    My science homework questions is: You measure the boiling temperature of 3 clear liquids. 1 of them boils at 100C. The other 2 at 85C and 115C. How can you use numbers to identify the first liquid? Can someone help?

    asked on September 30, 2008
  58. Math B

    Can some one please explain the set of real numbers as a field to me?

    asked on September 6, 2008
  59. applied physics

    if a DC motor uses a775 coulombs of charge in 15 seconds,how much current is produced

    asked on May 27, 2008
  60. English

    I need help to unscramble this word MEFHSKAIT

    asked on February 14, 2008
  61. geography

    i don't understand what an ethinic group is????

    asked on August 29, 2007
  1. Science

    How much energy is needed to raise the tempreture of 2.0kg of aluminium by 30 degreese celcius

    posted on November 30, 2017
  2. Math - Fractions

    5625 pictures

    posted on October 18, 2017
  3. Chemistry


    posted on April 4, 2017
  4. Maths


    posted on January 23, 2017
  5. math


    posted on November 15, 2016
  6. English

    In the Odyssey, what roles are played by the female characters you encountered in this unit? Describe some of these female characters, their traits, and the roles they played within the selections you read, especially considering that all of those

    posted on March 11, 2016
  7. sixth grade math

    16% out of 20% perfer not to wear school uniforms so technically the 4% would not even count so the percent is 16%.

    posted on October 19, 2015
  8. Math

    What about the grandfathers age??

    posted on October 23, 2013
  9. English

    intensive for #20

    posted on May 14, 2013
  10. 5th Grade Math

    dont know don't understand

    posted on January 31, 2013
  11. algebra

    what does the star mean

    posted on November 5, 2012
  12. Chemistry


    posted on May 30, 2012
  13. chemistry

    You're welcome (:

    posted on May 29, 2012
  14. Chemistry

    How did you get that answer?

    posted on May 29, 2012
  15. chemistry

    B. seawater

    posted on May 29, 2012
  16. Chemistry

    112 grams

    posted on January 18, 2012
  17. Science

    Another name for your windpipe would be the trachea

    posted on October 11, 2011
  18. world history

    1. A.

    posted on March 11, 2011
  19. physics

    Thank you!!!

    posted on November 20, 2010
  20. physics

    I get 9.00621 x 10 ^-11 m^2/s but the computer says that is wrong. I used the equation, Diffusion rate = DA (concentration gradient) where A is area and D is what we are looking for.

    posted on November 1, 2010
  21. physics

    Perfect! Since the density of lead is 11.3 x 10^3 kg/m^3 and the density of mercury is 13.6 x 10^3 kg/m^3, the answer is 0.831. Thanks much!

    posted on October 30, 2010
  22. physics

    I figured this question out: F = (mass of the arm x change in velocity)/time So, ((0.701kg.)(4.78m/s-1.55m/s))/(0.00239s) = 947.376569 And shear stress is F/Area = (947.376569N)/((0.0635m)(0.0131m))

    posted on October 26, 2010
  23. physics

    Much easier than I thought: Pressure = (1010 kg/m^3) x (1.51 m) x (9.8 m/s^2) = 14,945.98 Pa Thanks!

    posted on October 26, 2010
  24. 6th grade

    Oh I am sorry! I wasn't focusing and kept putting complex! Thank you, Ms. Sue for all your help!

    posted on September 21, 2010
  25. 6th grade

    Simple and complex subject I mean! Sorry! ^_^

    posted on September 21, 2010
  26. Geography

    How does modern technology help geographers?

    posted on August 4, 2010
  27. MATH...somewhat urgent

    2x+4y+1=0 y= 2-1/3x y-2x+2=0 3y-9x-1=0

    posted on February 5, 2010
  28. Physics

    So it'd be C?

    posted on November 6, 2009
  29. Math

    I need help please ASAP

    posted on September 24, 2009
  30. the big idea of energy

    i don't know either and i have to include it in a level assessed task help me!!! i have to explain the iron and sulphur reaction using the Big Idea Of Energy.. Help me !!!

    posted on April 14, 2009