Lou

Most popular questions and responses by Lou
  1. chem

    Does baking soda and vinegar have a complete ionic equation? HC2H3O2 (aq) + NaHCO3 ===> NaC2H3O2(aq) + H2CO3(aq)----->H2O(l)+CO2(g)+2H2O(l)

    asked on September 30, 2009
  2. Social Studies

    What was one reason for Genghis Khan’s success as a military leader? A. He ruthlessly destroyed all Mongol clans except his own. B. He organized the Mongolian army into an efficient fighting force. C. He built goodwill by treating conquered peoples with

    asked on November 10, 2018
  3. Social Studies

    What factors made the Tang capital of Chang'an a center of culture and trade? Select all that apply. A. It welcomed foreigners and their beliefs. B. It based its trade on the merit system. C. It was the center of silk production. D. It was located at one

    asked on November 8, 2018
  4. chemistry - crude product

    WHAT IS THE CRUDE PRODUCT IN RECRYSTALLIZATION?

    asked on February 20, 2012
  5. Science

    What does the law about superposition tell you about the relative ages of rocks? a. that the deeper you go into rock layers, the older the rocks are b. that the deeper you go into rock layers, the younger the rocks are*** c. that the oldest rock layer is

    asked on September 16, 2018
  6. organic chem

    when di-n butyl ether and hot concentrated naoh react----> nor rxn .. why? when di n butyl ether reacts with na metal---> nor reaction .. why?

    asked on March 11, 2012
  7. chemistry

    calculate the mass of oxalic acid dihydrate C2H2O4.2H2O required to react with 30 ml of 0.20 M sodium hydroxide solution?

    asked on October 27, 2009
  8. AP CHEMISTRY

    The equilibrium constant for the reaction PCl3(g) + Cl2(g) ⇀↽ PCl5(g) is 35000 at 760 ◦C. At equilibrium, the partial pressure of PCl5 was 150 bar and that of PCl3 was 8.12 bar. Calculate the equilibrium partial pressure of Cl2. Answer in units of

    asked on February 9, 2016
  9. Social Studies

    Which represents a unique achievement of Kush's Civilization? a. Meroitic script b. hieroglyphics c. papyrus*** d. preparation for the afterlife How did the region's geography affect Kush? a. The Nile's contracts made it difficult to travel by boat b. The

    asked on September 16, 2018
  10. physics

    A kayaker paddles at 4.0 m/s in a direction 30° south of west. He then turns and paddles at 3.7 m/s in a direction 20° west of south. I know the formulas but having trouble figuring out the degree of angle. Ax=4(cos30)= 3.4641 Ay=4(sin30)= 2

    asked on October 5, 2015
  11. Science

    After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap, in the geological record? a. an earthquake or motion along a fault b. new sediment deposits build up on the eroded area c. radioactive decay along a fault

    asked on September 16, 2018
  12. chemistry

    Of the metals Pb, Mg, Au, and Na, which will not spontaneously donate electrons to copper in solution?

    asked on June 14, 2010
  13. Chem

    A) Calculate the pH of a buffer system that is 0.06 M HNO2 and 0.160 M NaNO2 B) What is the pH after 2.00 M NaOH are added to 1.00 L of this buffer I can do part A but I don't know how to part B

    asked on May 14, 2011
  14. Art

    what national values were the Japanese likely trying to convey by including a portrait of famous philosophers Yukichi Fukuzawa on the following pieve of currency? A. wisdom and education ** B. power and prosperity C. strength and indurance D. peace and

    asked on April 7, 2016
  15. Algebra 2

    Does this verbal phrase translate into the algebraic expression correctly? The quotient of seven times a number and three (7x) / 3

    asked on October 17, 2015
  16. Biology

    For a male and female bison that are both heterozygous for normal skin pigmentation to produce an albino offspring.... 1. What are genotype of parents (A= normal skin, a=albino) AA x AA Aa x Aa * aa x aa 2. what are possible genotypes of offspring? Aa only

    asked on February 20, 2019
  17. Chemistry

    If a plant has 88.0 g carbon dioxide and 64.0g water available for photosynthesis determine: a the limiting reactant b. the excess reactant and the mass in excess c. the mass of glucose produced

    asked on April 29, 2014
  18. physics

    a 22 kilo ohm resistor having a tolerance of 10% has failed. you have on hand five resistors, valued at 120, 220, 47, 33 and 120 kilo ohm respectively. what combination of these would you choose to connect in parallel to replace the failed component?

    asked on May 12, 2015
  19. word

    I know the word is pronounced fesod, but I do not know how to spell it. Can someone please tell me how to spell it?

    asked on April 17, 2009
  20. Econ

    What are some examples of economic events?

    asked on February 25, 2008
  21. History

    The rule of law, established by Hammurabi, was the idea that a.) different laws apply to people of different social ranking b.) all members of society, even the rich and powerful, must obey the law c.) there is no difference between civil and criminal law

    asked on September 7, 2018
  22. chem

    The mass of the CuSO4 x 5H2O sample is 1.664 g. The mass of the recovered copper is 1.198 g. Calculate the percent copper in pure copper sulfate pentahydrate(this is the theoretical percent copper). One mole of copper has a mass of 63.55 g, and by

    asked on April 13, 2009
  23. Math

    You have 7L feet of fence to make a rectangular vegetable garden alongside the wall of your house, where L is a positive constant. The wall of the house bounds one side of the vegetable garden. What is the largest possible area for the vegetable garden?

    asked on March 21, 2019
  24. Chemistry

    Suppose you had an unknown solution that contained either dissolved NaCL, or NaNO3. You added AgNO3 to the unknown solution and observed that no solid forms. What can be concluded about the unknown solution? (use the solubility rules

    asked on April 25, 2011
  25. Language arts

    1. Which of the following passages from the novel best illustrates the most extreme hostility between the Chinese and American communities in San Francisco? A: An American man raises his voice when he suspects Windrider and Moon Shadow do not understand

    asked on May 20, 2019
  26. calculus

    A bicyclist is riding on a path modeled by the function f(x) = 0.03x, where x and f(x) are measured in miles. Find the rate of change of elevation when x = 3.

    asked on September 15, 2011
  27. macroeconomics

    Referring to the table in question 10, suppose improvement occurs in the technology of producing forklifts but not in the technology of producing automobiles. Draw the new production possibilities curve. Now assume that a technological advance occurs in

    asked on September 15, 2012
  28. Social Studies - Religion

    What are the three parts of the Hebrew Bible? a.) Torah, Prophets, Writings b.) Poems, Torah, Laws c.) Talmud, Torah, Poems d.) Prophets, Talmud, Psalms My answer - B Can someone tell me if I am right?

    asked on September 11, 2018
  29. Stats( PLEASE HELP)

    A psychologist has constructed a paper and pencil test purported to measure depression. To see how the test compares with the ratings of the expert, 12 emotionally disturbed individual are given the paper and pencil test. The individuals are also

    asked on April 2, 2009
  30. Social Studies

    Prior to the destruction of the Second Temple, which of the following areas in the world contained diaspora communities? a.) Central Aisa b.) Great Britain c.) Japan d.) Southern Africa

    asked on September 13, 2018
  31. Trigonemtry

    The sun is 25° above the horizon. Find the length of a shadow cast by a building that is 100 feet tall (see figure). (Round your answer to two decimal places.)

    asked on March 28, 2016
  32. chem

    the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day should a 77.0 kg adult receive?

    asked on January 31, 2012
  33. science ( soda can)

    Why does a can of soda left in the car on a hot summer day explode? Why does a can of soda left in the freezer eplode?

    asked on December 4, 2009
  34. Social Studies - Religion

    Identify which of the following are key teachings of Judaism. Select all that apply. a.) Righteousness b.) Observe the Sabbath c.) Love your neighbor d.) Slavery is forbidden e.) Do not make war My answers - C, A, E If someone could tell me if my answers

    asked on September 11, 2018
  35. Algebra

    A car rental agency charges ​$175 per week plus ​$0.2 per mile to rent a car. How many miles can you travel in one week for $355 question mark

    asked on March 5, 2017
  36. CDA

    I need two resources designed to assist teachers in constructively dealing with children with challenging behaviors(such as aggressive behavior like hitting or biting, or shyness)

    asked on March 31, 2009
  37. Chemistry

    How does the presence of HCl affect the charges on weak complexes?

    asked on September 24, 2015
  38. Writing Skills

    Sentence (i) has been shortened in sentence (ii) by using a(n) _______. (i) She likes a location that is in the sun. (ii) She likes a sunny location. A. prefix C. phrase B. adjective D. connective

    asked on August 24, 2009
  39. chem( buffers)

    Does water have a high buffering capacity? Why is it important to know it buffering capacity of water?

    asked on August 28, 2010
  40. probability( please help)

    Given a population comprised of 30 bats, 15 gloves, and 60 balls, if sampling is random and one at a rime without replacement, what is the probability of obtaining a bat, a glove, and a bat in that order if three objects are sampled from the population?

    asked on April 30, 2009
  41. bilogy(genetics

    given the following genotypes GgWwTt and GgWWtt. what is the probability of producing an offspring with the following genotype? How do i solve this problem?

    asked on November 5, 2010
  42. chem

    The mass of the CuSO4 x 5H2O sample is 1.664 g. The mass of the recovered copper is 1.198 g. 1. Compute the experimental percent by mass of copper in the sample: 1.1664/1.998x 100=71.81% 2. Calculate the percent copper in pure copper sulfate

    asked on April 13, 2009
  43. Social Studies

    Although southern Mesopotamia is a hot, desert region, why was it able to become the cradle of civilizations? A. Nomads developed aggressive herding techniques B. Flooding of the Tigris and Euphrates river brought good soil C. Farmers developed technology

    asked on September 15, 2018
  44. Chemistry

    Suppose you had an unknown solution that contained either dissolved NaCL, or NaNO3. You added AgNO3 to the unknown solution and observed that no solid forms. What can be concluded about the unknown solution? (use the solubility rules

    asked on April 25, 2011
  45. algebra

    Paula leaves home driving 40 miles/hr. One hour later Dan leaves home driving in the same direction at the rate of 50 miles/hr. How long will it take dan to catch up with Paula?

    asked on January 6, 2010
  46. algebra

    evaluate the expression when x = 10, y = -2 and z = -5 x/y= _____

    asked on November 13, 2014
  47. math

    Water is flowing at a rate of 10 m3/s into the cylindrical tank shown below. a) Find the volume V of the water as a function of the water level h. b) Find h as a function of the time t during which water has been flowing into the tank. height of cylinder:

    asked on July 18, 2011
  48. center of mass

    3 point mass of 4g placed at x=1,3,-6. where should a point fourth mass of 4 gm be placed to make the center of the mass at the orgin? this what i got : -24+4+12+4x/16=-8+4x/16. this what i did but i didn't get the right answer(which is 2) can someone tell

    asked on March 27, 2011
  49. chem

    If I added 60 drops of water to a beaker and weighed it, and then added another 60 drops of water to the breaker; How would I calculate number of drops per gram. How do I use density to calculate the number of drops per mL?

    asked on October 7, 2009
  50. argosy

    Cory has a collection of nickels, dime and quarters with a total value of 2.55. There are 6 more dimes than nickels and twice as many quarters as nickels. How many of each coin is in her collection?

    asked on March 17, 2016
  51. Marketing

    Are investment spending market tests a good strategy or a waste of time and overly cautious? I'm working on a case study and I'm having trouble picking a side to argue. The instructor wants us to decide how promotion money should be allocated in the case.

    asked on November 18, 2013
  52. English-- Analogies

    1. perfunctory : Punctilious :: A. kindly : gently B. avoid : detect C. practical : Feasible D. Perdition : salvation 2. Perspicacity : Mind :: A. reason : excuse B. attorney : trial C. sharpness : blade D. rainstorm : spring

    asked on April 4, 2010
  53. government(taxes)

    I am looking for a list of California state taxes. So far this all I have: 1) Sales Tax 2) Trash tax 3) Electricity tax 4) State income tax 5) Gasoline tax 6) Property tax 7) Federal telephone excise tax 8) Excise tax 9) social security tax 10)

    asked on August 3, 2008
  54. math(significant figures)

    A pipe is measured once with a steel tape with markings every .1mm.The two ends of the pipe line up with the 0 and 40-m marks onthe tape. How should this datum be recorded using theappropriate number of significant figures? exolain how you figured it out

    asked on February 1, 2012
  55. Calculus

    Find the distance traveled in 45 seconds by an object traveling at a velocity of v(t) = 20 + 2cos(t) feet per second.

    asked on September 12, 2011
  56. Geography

    how does modern technology help geographers?

    asked on January 13, 2010
  57. Science

    how would a geologist use the principle of superposition to determine the relative ages of the rocks in the Grand Canyon?

    asked on April 1, 2009
  58. math

    how you arrange the following to ascending order 8/7, 8/3, 8/4, 8/8

    asked on November 17, 2016
  59. english

    unscramble 14 letters into 3 words

    asked on November 23, 2015
  60. mecs101

    discuss a modern middle eastern country's attempt to either codify or replace shariah law.

    asked on November 16, 2011
  61. math

    how do you solve -4

    asked on June 14, 2011
  62. Physics

    It has been suggested that rotating cylinders about 10 mi long and 5.4 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall

    asked on December 2, 2010
  63. stats (please help)

    I need help determining what x and y is in this question. A psychologist has constructed a paper and pencil test purported to measure depression. To see how the test compares with the ratings of the expert, 12 emotionally disturbed individual are given the

    asked on April 2, 2009
  64. Statistics

    In the United States, 43% of people wear a seat belt while driving. If two people are chosen at random, what is the probability that both of them wear a seat belt?

    asked on December 12, 2008
  65. history

    I need help with my homework assignment. Assignment: tell us about this ongoing right abuse and violation of international law. Unfortunately, I was not able to find anything. Please help as soon as possible. Thank you

    asked on July 23, 2008
  66. business

    Late payment of medical claims can add to the cost of health care. An article (M. Freudenheim, “The Check Is Not in the Mail,” The New York Times, May 25, 2006, pp. C1, C6) reported that for one insurance company, 85.1% of the claims were paid in full

    asked on January 31, 2013
  67. Theory

    If an experiment doesn't agree with the the theory, then this means that the theory is incorrect? please give explain why or why not

    asked on April 25, 2012
  68. Math

    Brian O'Reily earns twice as much each week as a tutor than he does pumping gas. His total weekly wages are $150 more than that of his younger sister. She earns one quarter as much as Brian does as a tutor. How much does Brian earn as a tutor?

    asked on September 14, 2011
  69. Algebra

    The difference of two integers is 9. Five times the smaller is 7 more than three times the larger. Find the numbers.

    asked on September 13, 2011
  70. Chem

    For this equation 2 Ag+ (aq) + Cu(s) Cu2+ (aq) + 2 Ag(s) Which occurs at the anode? A. Cu --> Cu2+ + 2e– B. Cu2+ + 2e– --> Cu C. Ag+ + e– -->Ag D. Ag --> Ag+ + e– A, right because it's oxidation?

    asked on May 13, 2011
  71. Chemistry

    Suppose you tired to carry out a double-replacement reaction by mixing together equal volumes if a solution that contained dissolved NaF and a solution NaCl. Would you expect a reaction, if Si write the balanced chemical equation

    asked on April 25, 2011
  72. organic chem

    how do i find the general formulas for diyne AL ( al represents aldehyde) diene al eneyneol

    asked on December 14, 2010
  73. just curious

    why is the equator hotter than the north and south poles?

    asked on February 7, 2010
  74. Stats

    Hello, I need help determining what x and y are in this question.inoder to answer this question:What is the correlation between the rankings of the two psychiatrists? A psychologist has constructed a paper and pencil test purported to measure depression.

    asked on April 1, 2009
  75. English

    I have been search online for sources that will help me understand the text of Report of the Massachusetts board of education by Horace Mann better , but I found absolutely nothing. I am looking something that will give me a summary or help me know that I

    asked on March 13, 2009
  76. college algebra

    a garden hose can fill a pool in 3 days and a longer one can bill the pool in 2 days. How long will it take to fill the pool if both hoses are used.

    asked on March 8, 2009
  77. physics

    "If you have an inductor that has an inductive reactance of 125 ohms, on a 60Hz frequency, what would be the inductance in henry's?"

    asked on March 19, 2018
  78. statistics

    construct a 95% confidence interval estimate for the population mean MPG of 2010 family sedans, assuming a normal distribution.

    asked on June 27, 2014
  79. business

    1.21 Three professors at Northern Kentucky University compared two different approaches to teaching courses in the school of business (M. W. Ford, D. W. Kent, and S. Devoto, “Learning from the Pros: Influence of Web-Based Expert Commentary on Vicarious

    asked on December 16, 2012
  80. english-personal growth

    what is a personal growth paper?

    asked on February 14, 2012
  81. Math

    For this problem, I need help creating a chart for this: Brian O'Reily earns twice as much each week as a tutor than he does pumping gas. His total weekly wages are $150 more than that of his younger sister. She earns one quarter as much as Brian does as a

    asked on September 14, 2011
  82. chemistry

    How are sugars stored in onions and potatoes?

    asked on September 24, 2010
  83. com 150

    • View the Vacuum Sales digital story located on the Materials tab of your student Web site for Week Six. Of the two arguments provided in the digital story, which is valid and which is sound? When you are building an argument for an issue that is

    asked on March 2, 2010
  84. stats

    Hello, I need help determining what x and y are in this question.inoder to answer this question:What is the correlation between the rankings of the two psychiatrists? A psychologist has constructed a paper and pencil test purported to measure depression.

    asked on April 1, 2009
  85. English

    "Without undervaluing any other human agency, it may be safely affirmed that the Common School, improved and energized, as it can easily be, may become the most effective and benignant of all the forces of civilization."(Horace Mann) I know what Mann is

    asked on March 13, 2009
  86. trig

    find an equation of the line that passes through (2,-4) and is parallel to the line 3x-y=1. Write your answer in the form y=mx+b. please help!

    asked on February 26, 2008
  87. science

    5. a baseball and a golf ball have the same momentum. which has greater kinetic engergy? -the golf ball because of the greater velocity 12. you have a choice of catching a baseball or a bowling ball, both with the same KE. which is safe? -catching the

    asked on October 17, 2007
  88. English

    Should this be underlined when writing Bible, The Message??? Thanks, Lou The Bible should be underlined or italicized because it's the title of a book. If The Message is an article or a pamphlet, it needs to be in quotation marks. If it's the title of a

    asked on August 20, 2006
  89. math

    Find the maturity value on a loan of 10,500 @ 8 1/2% interest for 18 years using the MV=P+I

    asked on May 6, 2014
  90. business

    1.21 Three professors at Northern Kentucky University compared two different approaches to teaching courses in the school of business (M. W. Ford, D. W. Kent, and S. Devoto, “Learning from the Pros: Influence of Web-Based Expert Commentary on Vicarious

    asked on December 15, 2012
  91. simple interest

    if i deposit 3,500 dollars at and intrest rate of 71/2% per year for 5 years what would my interest amount be?

    asked on November 13, 2012
  92. horizontal displacement physics

    how do we find horizontal displacement in physics?

    asked on February 22, 2012
  93. chem (significant figures)

    what are the errors in the measured values g=9.910 m/s^2 amd 9.805? true value 9.797 for 9.910 i got 0.113 and for 9.805 i got 0.008. i know i need for significant figures but i got three in my answer. so what do i do?

    asked on February 7, 2012
  94. ochem

    In a sn2 reaction why do we need sp3 hybrid orbital and not sp2 for the substrate

    asked on January 29, 2012
  95. physics

    what is the average velocity of a vehicle that uniformly accelerates from rest to 38 fps?

    asked on September 27, 2011
  96. US/ 101

    Have you ever used mnemonics to remember something complicated? If so, describe the techniques you have used. What ways might you use mnemonics to be a more effective college student and adult learner?

    asked on August 14, 2011
  97. bio (plasma membrane)

    I understand that the plasma membrane is composed of a polar head and non polar tail. I read in my textbook that small non-polar molecules readily pass through and that polar and non-polar repel. so how do non-polar substance pass the the polar head?

    asked on February 19, 2011
  98. math

    the perimeter of isosceles triangle is 70 d. of the length of a leg of the triangle is 5 dm less than twice the lenth of the base, find the lengths of the sides of the triangle.

    asked on January 15, 2011
  99. American History

    what were the elements of urban liberalism?

    asked on April 11, 2010
  100. Chemistry

    Write a balanced equation: Aluminum reacts with aqueous hydrochloric acid to form hydrogen gas and aqueous aluminum chloride. I think: Al+HCl(aq)-->H(g)AlCl(aq) But I don't really know if I am doing it right or not

    asked on April 5, 2010

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