Leanne

Most popular questions and responses by Leanne
  1. chemistry

    Calculate DHo for the oxidation of nitric oxide to nitrogen dioxide, 2 NO(g) + O2(g) --> 2 NO2(g), from the following data: DHof[NO(g)] = +90.25 kJ DHof[NO2(g)] = +33.18 kJ im confused...can someone help me.

    asked on November 19, 2009
  2. physics

    Light is an electromagnetic wave and travels at a speed of 3.00 × 10^8 m/s. The human eye is most sensitive to yellow-green light, which has a wavelength of 5.72 × 10^-7 m. What is the frequency of this light?

    asked on March 6, 2016
  3. English- poetry

    Can anyone find any poetic devices in this poem? (metaphors, similes, personification, etc) AMBITION BY DES WALSH Once upon a time A poor man Named Marcus Sat all day Hoping for food Outside a kitchen door At night he would think Of the golden sands Where

    asked on September 22, 2011
  4. math

    at one high school the mean time for running the 100-yard dash is 15.2 seconds with a standard deviation of 0.9 seconds. The times are very close approximated by a normal curve. Find the percent of times that are: between 15.2 and 16.1 seconds

    asked on July 14, 2008
  5. English

    I have a Romeo & Juliet essay to be handed in 5 days from now. I mainly have to write about 'Act 3 Scene 1'. The structure paper tells me to 'Comment on the way Shakespeare contrasts the mood of this scene with the romantic atmosphere of the previous scene

    asked on April 22, 2007
  6. geometry

    A room is 14 x 21 ft.It needs to be painted.The ceiling is eight above the floor.There are 2 windows in the room, each one is 3 ft by 4 ft. The door is 2.5 ft by 6.5 ft. 1)Find the area of the walls and ceiling to be painted. 2)one gallon of paint covers

    asked on November 7, 2015
  7. calculus

    Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. (Round your answer to four significant digits.) HINT [See Quick Example

    asked on November 28, 2012
  8. Physics

    When an object of mass m1 is hung on a vertical spring and set into vertical simple harmonic motion, its frequency is 12Hz. When another object of mass m2 is hung on the spring along with m1, the frequency of the motion is 4Hz. Find the ratio m2/m1 of the

    asked on November 13, 2011
  9. Physics

    When an object of mass m1 is hung on a vertical spring and set into vertical simple harmonic motion, its frequency is 12Hz. When another object of mass m2 is hung on the spring along with m1, the frequency of the motion is 4Hz. Find the ratio m2/m1 of the

    asked on November 13, 2011
  10. calculus

    Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. (Round your answer to four significant digits.) HINT [See Quick Example

    asked on November 28, 2012
  11. English- poetry

    Can anyone find any poetic devices in this poem? (metaphors, similes, personification, etc) AMBITION BY DES WALSH Once upon a time A poor man Named Marcus Sat all day Hoping for food Outside a kitchen door At night he would think Of the golden sands Where

    asked on September 22, 2011
  12. american history

    At the outset of the secessionist movement in the South, which state defeated the cooperationist argument that the South should act as a unit? A. Mississippi B. South Carolina C. Virginia D. Kentucky

    asked on January 18, 2013
  13. MATH NEED HELP!

    I have four questions in one. 1. A library crew can shelve books in six hours. Another crew can do the job in four hours. If the first crew begins and is joined by the second crew one hour later, how many hours will it take to finish the job? 2. Find a

    asked on August 10, 2011
  14. grade 12 math

    for the function f(x)=6-5(3)^x-1/3 (a)simplify(in form =ab^kx+d (b)state the domain (c)state the range

    asked on July 30, 2010
  15. Chemistry

    What substance is a better oxidizing agent in each of the following pairs? Explain. a) Co2+ or Cr3+ b) Mn2+ or I2 I think C02+ and I2 because they are above on the table. Is this correct or do I need more information in my answer?

    asked on March 12, 2010
  16. science

    You wish to heat 30 kg of water from 60°C to 80°C. How many kcal of heat are necessary to do this? To how many kJ does this correspond?

    asked on October 12, 2012
  17. psychology

    I need an example of how one domain of development affects the other two

    asked on March 2, 2011
  18. grade 12 math

    solve 1-tan^2x=0 , 0≤x≤2pi

    asked on July 30, 2010
  19. spelling

    Please could someone tell me to how to spell 'hard-waring', the dictionary doesn't list it. Is it hard wearing, hardwaring. Thanks in advance.

    asked on December 13, 2008
  20. history

    I am doing a project on a battle. I want to say it was a 'bloody' battle. Can you help with another word as my teacher will not like this?

    asked on November 16, 2008
  21. Chemistry

    If the ΔH for H2O(l) → H2O(s) is -6.01 kJ, then what is the ΔH for 2H2O(s) → 2H2O(l)? A -6.01 kJ B. 6.01 kJ C. -12.02 kJ D. 12.02 kJ

    asked on July 6, 2016
  22. math

    Product A This product will take 2 years to develop, at a cost of $100,000 in the first year (Yr 0) and $50,000 in the second. Revenue (benefits) in subsequent years is expected to be $100,000 per year. Product B This product will only take a year (Yr 0)

    asked on October 8, 2015
  23. gcse geography

    please could someone help me find the definition of a sandy beach. ive looked but cant find anything.thanks:-)

    asked on March 9, 2011
  24. math

    Joe has $10,000 to purchase a used car. If the sales tax is 7% and the fee for title and license plates is $200, what is the maximum amount Joe can spend for a car?

    asked on January 11, 2010
  25. Writin

    The assignment is to write opinionated questions that are arguable for a class discussion. One subject is the prisoners treatment during war time - can you give me an example of a possible question?

    asked on September 25, 2008
  26. writing

    I need to know how to write an opinionated question?

    asked on September 25, 2008
  27. textiles

    does anyone know if silk is stronger than wool , why is wool warmer than silk and why silk is more expensive than wool. thankyou

    asked on April 12, 2008
  28. mathematics

    I am two digit odd number.the sum of my digit is five.

    asked on August 16, 2014
  29. Math

    For a binomial distribution with n=20 trials and probability of success p=.05, we let r= number of successes out of 20 trials. Use the normal approximation to estimate P(6

    asked on January 21, 2013
  30. ethics

    This is the question i was asked, "The things that will destroy us are: politics without principle; pleasure without conscience; wealth without work; knowledge without character; business without morality; science without humanity; and worship without

    asked on February 24, 2012
  31. psychology

    I need an example of how one domain of development impacts the other two.

    asked on March 1, 2011
  32. art

    Write a summary comparing the characteristics and innovations of each Greek and Roman architecture in 200 to 300 words. · Provide two representative examples of architecture for each Greek and Roman cultures.

    asked on September 3, 2010
  33. grade 12 math

    determine the inverse of y=2(3)^x+1

    asked on July 30, 2010
  34. home economics

    wat are savory deductions

    asked on November 26, 2009
  35. geopgraphy

    What type of map shows land boundaries?

    asked on October 6, 2008
  36. geography

    how do trees help the enviroment ?

    asked on April 13, 2008
  37. science

    what do taste buds do and where do you find the other taste buds?

    asked on October 14, 2007
  1. science

    c and d

    posted on September 4, 2016
  2. Sex Ed

    Why do guys love me

    posted on April 29, 2013
  3. calculus

    y=e^x*** no ex

    posted on November 28, 2012
  4. ap chemistry

    C5H12+8O2->5CO2+6H2O

    posted on March 6, 2012
  5. algebra

    x=1.5 y=2.5 Your Welcome :)

    posted on August 10, 2011
  6. Japanese

    How do you answer this question below ? kazoku to doko ni sun dei masu ka ?

    posted on January 12, 2010
  7. home economics

    i don't no

    posted on November 26, 2009
  8. chemistry

    i got -114.14 kj can someone confirm this?

    posted on November 19, 2009
  9. history

    many thanks.

    posted on November 16, 2008
  10. writing

    The assignment is to make the question opinionated as well as make it argumentative for class discussion. One topic is the treatment of prisoners during war time. Can you give me an example of that?

    posted on September 25, 2008
  11. Chemistry

    actually if you read the previous post again Abi. you'll realize it says the same thing! ;]

    posted on April 22, 2008