tt

Most popular questions and responses by tt
  1. Chemistry

    OK I just need help with two final problems that I am stuck on: The problem states the calcium carbonate in limestone reacts with HCl to produce a calcium chloride solution and carbon dioxide gas CaCO3(s)+2HCl(aq)-->CaCl2(aq)+H2O(l)+CO2(g) 1)Find how many

    asked on December 9, 2010
  2. math

    Lake superiorhas a depth of 1.333 thousand feet.there are 5,280 feet in one mile. How deep is Lake Superior?

    asked on November 5, 2012
  3. calculus and geometry

    how close does the semicircle y=radical(16-x^2) come to the point (1,radical3)?

    asked on November 18, 2008
  4. physics

    A microwave draws 5.0 A when it is connected to a 120 V outlet. If electrical energy costs $0.090 per kW·h, what is the cost of running the microwave for exactly 6 h?

    asked on November 20, 2013
  5. maths

    A famer has twice as many cow as sheep. After he sold 375 cows and another 12 cows died, he had half as many cows as sheep left. How many cows remained.

    asked on May 17, 2015
  6. Chemistry

    Calculate the molarity of the following solutions: 5.0g of KOH in 4.0L of KOH solution I went from grams of KOH to moles of KOH to molarity but still got the wrong answer... 5.0g KOH X 1 mol KOH/56.108g KOH = 5.0 mol KOH/56.108=0.0891 mol KOH/4.0L and got

    asked on December 9, 2010
  7. math

    PROVE THAT IF TWO LINES INTERSECT THEN THIER UNION IS IN THE SAME PLANE

    asked on November 7, 2018
  8. MATH

    Dave takes out a 24-year mortgage of 210,000 dollars for his new house. Dave gets an interest rate of 13.2 present compounded monthly. He agreed to make equal monthly payment, the first coming in one month. After making the 68th payment, Dave wants to buy

    asked on September 17, 2016
  9. math

    express 35c to $2.25 as a ratio in its lowest term

    asked on April 9, 2019
  10. Chemistry

    If aluminum has a density of 2.7g/cm^3,what is the mass,in grams of the foil? It states that a package of aluminum foil is 54.3 yd long, 14 inches wide, and 0.00035 inches thick.

    asked on September 19, 2010
  11. chem

    What is the wavelength of a 1400 kg truck traveling at a rate of 72 km/h?

    asked on April 29, 2010
  12. us history

    what factors finally turn the tide for womens suffrage? On what grounds did people resist womens suffrage? what is the significance of the phrase"the perfect thirty-sixth"?

    asked on January 27, 2008
  13. Chemistry

    If aluminum has a density of 2.7g/cm3,what is the mass,in grams of the foil?

    asked on September 19, 2010
  14. Algebra

    A kitten weighs four pounds and2/3 of a fifth pound. Which mixed number represents the kitten's weight?

    asked on January 30, 2017
  15. math

    Susan counted a total of 36 red and green cars in the parking lot. There were 8 times as many red cars as green cars. How many red cars did Susan count.

    asked on November 22, 2015
  16. chemistry

    1. A solution of sodium oxalate has a pH of 7.82. The [OH-] in mol/L must be which of the following: a) 6.18 b) 1.5 x 10-8 c) 6.6 x 10-7 d) 7.82 e) -7.82 2. When 0.93 mol of O2 and 0.56 mol of NH3 are mixed together and allowed to come to equilibrium

    asked on August 3, 2011
  17. maths

    Bob, jean, and Paul have a total of 5590 stickers. Paul has twice as many stickers as Bob. Bob has 3 times as many stickers as Jean. How many stickers does each one have

    asked on May 14, 2015
  18. physics

    A particle of mass 86 g and charge 24 μC is released from rest when it is 67 cm from a second particle of charge −12 μC. Determine the magnitude of the initial ac- celeration of the 86 g particle.

    asked on July 8, 2010
  19. maths

    String p is 3 times as long as string q. string r is 3m longer than half the total length of strings p and q. If the total length of all three strings is 54oocm what is the length of string r.

    asked on May 17, 2015
  20. chemistry

    1.If its molar solubility is designated by “x”, then which of the following expressions best represents the solubility product for the substance Ag2SO4? a) x2 b) 27x4 c) 4x3 d) 108x5 e) 3x4 2. Consider the equilibrium, 4HCl(g) + O2(g) 2H2O(g) +

    asked on August 3, 2011
  21. english

    Which of the following is an example of foreshadowing in To Kill A Mockingbird? Scout and Jem go see Mrs. Dubose. Miss Maudie's house burns down. Atticus discusses the Ewells with Scout after her first day of school. **my choice Scout does not like her

    asked on November 16, 2016
  22. chemistry

    1.) For which of the following substances is the standard enthalpy of formation equal to zero? a) water [H2O(l)] d) carbon dioxide [CO2(g)] b) lead [Pb(l)] e) tin [Sn(s)] c) carbon dioxide [CO2(s)] 2.) Consider the following four equations: 1. C6H6(l) +

    asked on August 3, 2011
  23. phicis

    A string of mass 10.0 grams and length L = 3m has its ends tied to two walls separated by distance D = 2m. Two masses of 2 kg each are suspended from the string as shown in the figure. If a pulse is sent from Point A, how long does it take to travel to

    asked on December 6, 2015
  24. chemistry

    Free Energy and Temperature A certain reaction is non-spontaneous at lower temperatures but becomes spontaneous when the temperature is raised sufficiently. For this reaction, S is positive. S is negative. H is negative. G becomes positive at higher

    asked on October 18, 2011
  25. chemistry

    For the equilibrium system below, which of the following would result in an increase in the concentration of CO(g)? 2H2(g) + CO(g) CH3OH(g) + 92 kJ a) decreasing temperature b) adding some CH3OH c) both b and d d) decreasing the volume of the container e)

    asked on August 3, 2011
  26. Chemistry

    If a person has a mass of 62 kg, how many pounds of water does she have in her body? And it gives the typical adult body containing 51% water

    asked on September 19, 2010
  27. spanish

    Subjunctive, infinitive, or indicative??? can anyone please correct me??? I try to practice it before my test but I'm really confused about it, and also please explain why I did it wrong??? muchas gracias!!!! Put ir in the nosotros subjunctive form vayamos

    asked on May 7, 2009
  28. spanish

    please check my grammar, and please tell me which one I can change to imperfect, because I try to write some sentences in preterit, and some in imperfect, thank you!!! Aprendí español porque quise mejorar mi español. Visité los cuadros en el

    asked on April 12, 2009
  29. Chemistry

    I need help with this problem please Calculate the amount of reagents you take to prepare 200 g of 9.0% (m/m) glucose solution? I already found the mass of the glucose which was part one and got 18.0 g of glucose. Now they want the mass of water and I am

    asked on December 9, 2010
  30. Chemistry

    What is the largest atom in period 2 of the periodic table?

    asked on October 17, 2010
  31. us history

    In what ways did wilson support progressivism? In what ways did president Taft support the progressive agenda? Brefly describe theodore roosevelts progressive record what were some of the reform ideas at the turn of the century?

    asked on January 27, 2008
  32. English

    Change underline phrase to show possession.... Did they sleep on the benches of the park? benches of the park is what is underlined Answer Did they sleep on the park's benches?

    asked on January 14, 2016
  33. maths

    Wendy and Carol each bought the same laptop at the same price. In addition, Wendy bought a flash drive and Carlo bought an infrared mouse. The flash drive cost $60. Find the cost of the infrared mouse if Carol spent $1810 and Wendy spent $1840.

    asked on May 14, 2015
  34. World History

    What new techniques led to Henry Ford increasing production Why did factories use the division of labor on the assembly line

    asked on October 8, 2014
  35. english

    write a paragraph explaining how you can apply writing elements such as evaluation, summary, synthesis, analysis to enhance your academic and professional writing.

    asked on June 13, 2011
  36. Chemistry

    I am having trouble getting this starting and figuring out the correct steps...the problem is Calculate the final concentration of the solution in each question 1) Water is added to 0.270 L of a 6.00M HCl solution to give a volume of 3.00 L (Express

    asked on December 9, 2010
  37. Chemistry

    If a person has a mass of 62 kg, how many pounds of water does she have in her body?

    asked on September 19, 2010
  38. algebra1

    6x sq.-24

    asked on March 11, 2009
  39. 12th Calculus

    a 13-ft ladder is leaning against a wall. suppose that the base of the ladder sides away from the wall at the constant rate of 3ft/sec 1. explain why the motion of the two ends of the ladder can be represented by the parametric equations: x1(t)=3t, y2(t)=0

    asked on November 20, 2008
  40. government

    How would you resolve the following conflicts between rights of the individuals and why? [g] Mexican-American students at Orange Coat College insist that tacos be served once a week in the Captain’s Table. [h] Fountain Valley High School has 80%

    asked on November 10, 2008
  41. World History

    To whom were economies connected and why

    asked on October 8, 2014
  42. elgebra

    2/3a +5/a

    asked on May 16, 2013
  43. statistics

    Undergraduates in a large university class were asked to record the time they spent on the most recent homework. In a histogram of the recorded times, the height of the bar over the interval “1 hour to 3 hours” is 4% per hour. The height of the bar

    asked on March 28, 2013
  44. math

    The length of a rectangle is 2 inches more than its width. The area of the rectangle is 15 square inches. What are the length and width of the rectangle?

    asked on September 12, 2012
  45. simplest form

    what is 1/2+5/6 in simplest form

    asked on September 12, 2012
  46. science

    Observe one hour in a classroom (preschool, pre-kindergarten, kindergarten

    asked on November 2, 2011
  47. math

    Mr.R covers 3/4 of his kitchen with tiles. He covers 1/4 of his kitchen with rug. what fraction of the kitchen is covered with a rug . A 4/9 B 1/4 C 3/16 D 1/3

    asked on January 31, 2016
  48. math

    Mrs.Fis has 1/3 of a stack of Quizzes left to grade. Of the stack,3/4 of the OERs are from Courage. What fraction of the entire stack is from courage. A 1 1/12 B 1/4 C 5/12 D 4/9

    asked on January 31, 2016
  49. Chemistry

    define pressure how many mm Hg are in 875.1kPa

    asked on October 26, 2014
  50. alg

    Solve for u: u − 2/ u − 4 + 6 = u + u − 6/ 4 − u

    asked on April 4, 2014
  51. algebra

    Simplify (2/3k)+(k/k+1) divided by (k/k+1) -(3/k)

    asked on April 4, 2014
  52. algebra

    Solve for u: u − 2 u − 4 + 6 = u + u − 6 4 − u

    asked on April 4, 2014
  53. math

    what is the equal groups of 20

    asked on January 31, 2014
  54. math

    Whats the lcm of 32 40 and 49

    asked on November 3, 2012
  55. math

    Kate is at a T-shirt sale where she can buy one and get a second one for 30% off. She wants to buy two T-shirts listed at $19 each. How much will she pay?

    asked on April 16, 2012
  56. Math - Trig

    Given that a measures 25.1 mm, x measures 51.2 mm and angle b measures 82°, find the length of y -

    asked on March 26, 2010
  57. government

    What factors enabled congress to dominate the American government in the nineteenth century? Was the problem a series of weak president?

    asked on November 22, 2008
  58. physiology

    During myasthenia gravis, the body attacks the Ach receptors so they do not work; this could cause?

    asked on November 20, 2008
  1. science

    H

    posted on June 12, 2019
  2. Life orientation

    People they will suffer because they will lost were they belong

    posted on April 28, 2019
  3. social studies

    Of the following statements, which accurately describes how foreign lands influenced East Africa? A. Through military conquests, soldiers from India brought Christianity to East Africa. B. Contact through trade resulted in a multicultural mix that

    posted on March 6, 2019
  4. Language Arts 7 B

    i need help with #9

    posted on February 28, 2019
  5. chemistry

    1. Why is the carbon dioxide gas that carbonates fountain drinks and powers paintball guns stored in sturdy canisters?

    posted on February 22, 2019
  6. chemistry

    1. Why is the carbon dioxide gas that carbonates fountain drinks and powers paintball guns stored in sturdy canisters?

    posted on February 22, 2019
  7. Math

    Nice

    posted on February 18, 2019
  8. Math

    36

    posted on December 17, 2018
  9. math plz help

    Yeah anonymous is right

    posted on October 22, 2018
  10. Math- HELP

    Wrong, it’s 1. 0.875 2. 1.5 3. 4.375 4. 2/5 5. 7 1/100

    posted on October 24, 2017
  11. Health

    A B C D B

    posted on October 24, 2017
  12. Math

    913

    posted on October 11, 2017
  13. technolgy

    A C B A

    posted on September 27, 2017
  14. Check my answers in history PLZ

    anna is right dudes

    posted on August 21, 2017
  15. RIFT VALLEY UNIVERSITY COLLEGE

    prove the profit maximaization of the consumer i.e mn=p. according to cardinalist using mathmatical dervation

    posted on July 27, 2017
  16. RIFT VALLEY UNIVERSITY COLLEGE

    explain the prove the profit maximization of the consumer mu=p, according to cardinalist

    posted on July 22, 2017
  17. Physics

    tt

    posted on June 30, 2017
  18. Math

    8 weeks. 100-7.5 = 92.50 92.50/12 = 7.70833333 This means 8 weeks.

    posted on June 9, 2017
  19. pharmacy compding

    14.4g

    posted on May 29, 2017
  20. 7th Grade Social Studies

    i used to first correct answers and i only got 1 right

    posted on March 3, 2017
  21. Math

    the answer is 40

    posted on February 27, 2017
  22. chemistry

    45

    posted on February 2, 2017
  23. English

    Well? Did anyone get the answers?

    posted on October 4, 2016
  24. social studies

    ^^ yo

    posted on August 25, 2016
  25. Science

    C

    posted on May 12, 2016
  26. Science

    Yes, C is correct. But actually, as a horseback rider, I have learned that a horse is most relative to a rhino.

    posted on April 26, 2016
  27. Calculus!!!

    14/(pi +4)

    posted on April 22, 2016
  28. econs

    hnh

    posted on January 28, 2016
  29. economics

    vf

    posted on January 28, 2016
  30. English

    gtg

    posted on January 15, 2016
  31. 7th grade social studies Ms. Sue please

    thanks so much ms.sue u real cool

    posted on November 9, 2015
  32. color theory

    all of these answers are not correct. just a little FYI for everyone, study the material

    posted on October 28, 2015
  33. Chemistry

    How much energy must be absorbed by 20.0 g of water to increase its temperature from 43.0 °C to 83.0 °C? (C = 4.184 J/g°C)

    posted on October 22, 2015
  34. chemestry

    what role did marco polo play in the age of exploration

    posted on March 26, 2015
  35. History

    what role did marco polo play in the age of exploration

    posted on March 26, 2015
  36. History

    how did the english overcome the spanish armada

    posted on March 20, 2015
  37. physics

    The velocity would be four times as great and the time would be two times as great. So the power would be (43)(4)(2)=344 watts

    posted on November 16, 2014
  38. Chemistry

    please explain how you got the answer

    posted on October 26, 2014
  39. World History

    I still cant understand

    posted on October 8, 2014
  40. World History

    England industrial revoulution

    posted on October 8, 2014
  41. Chemistry

    247

    posted on July 24, 2014
  42. 3rd grade math

    the equal groups of 20

    posted on January 31, 2014