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. 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
  3. chemistry - crude product


    asked on February 20, 2012
  4. 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
  5. 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
  6. 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
  7. 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
  8. complex numbers

    find the values of x and y x+5i=y+yi

    asked on March 8, 2009
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. Math

    The froghopper holds the world record for insect jumps. It can leap at an angle of 45.0° at a speed of 1.0 m/s. (a) Find the velocity (magnitude) at t = 1.0 seconds. (b) Find the position at t=1.0 seconds.

    asked on September 21, 2018
  22. 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
  23. 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
  24. 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
  25. 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

    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
  27. english

    unscramble 14 letters into 3 words

    asked on November 23, 2015
  28. Chemistry

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

    asked on September 24, 2015
  29. 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
  30. 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
  31. physics

    a great amount of water vapor changes phase to become liquid water droplets in the clouds that form a thunder storm. Does this phase change release or absorb energy?

    asked on April 23, 2014
  32. chem

    Does anyone know what graph you would obtain if the fractional distillation had been a complete separation of pure toluene or pure cyclohexane?

    asked on October 6, 2011
  33. Math

    A plumber makes $4.50 per hour more than his apprentice. During an 8-hour day, their combined earnings total $372. How much does each make per hour? (hint: if you decide to use cents instead of dollars,then use 450 cents per hour and 37200 cents total

    asked on September 19, 2011
  34. 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
  35. 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
  36. Math

    What is the surface area of a right circular cylinder with base circle of radius of 5m and height of the cylinder 10m?

    asked on January 17, 2011
  37. 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
  38. chem

    How do I calculate ratio of volume of base to volume of acid . Ex) phenolphthalein: Acid:20mL Base 30mL

    asked on April 27, 2010
  39. 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
  40. chemistry

    I wanted to know that in a chemical reaction are the products part of the system or surrounding?

    asked on October 19, 2009
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. physic

    "If you have an inductor that is connected to a 36v, 400 Hz circuit with a current of .2 A, what is the inductance of the inductor?"

    asked on March 19, 2018
  49. 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
  50. PreAlegebra

    The club was given materials to build 160 feet of fence. If they used the auditorium wall for one side of their garden, what size rectangle should they make to have the largest area? If w represents the width of the rectangle and is perpendicular to the

    asked on June 24, 2017
  51. math

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

    asked on November 17, 2016
  52. 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
  53. 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
  54. Math Word Problem

    Can someone please check this one, this is a word problem, not a greater than or less question. How much greater than -10.4 is -6.52? -10.4 - -6.52 = -3.88 is this correct?

    asked on October 25, 2015
  55. Math

    I need help with this: 0 x -8 (it is 0 multiplied by negative 8) The answer is came up with is 0 is this correct?

    asked on October 25, 2015
  56. 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
  57. Calculus

    Let f(x) be the function f(x)={x2−c for x

    asked on September 12, 2015
  58. 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
  59. algebra

    how can you write a proportion that solves a problem in real life? can someone give me some ideas please?

    asked on April 1, 2015
  60. algebra

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

    asked on November 13, 2014
  61. biology

    How do changes in the nucleotide sequence lead to mutations and how could this affect the primary structure of proteins?

    asked on September 18, 2014
  62. 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
  63. physics

    explain why we sweat when it is hot? How does it help us? In terms of heat and temperature what happens

    asked on April 23, 2014
  64. math

    Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -2x2 + 2x + 2.

    asked on January 31, 2014
  65. math

    solve for d if ddd base 5 = 124

    asked on January 30, 2014
  66. 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
  67. marketing

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

    asked on November 18, 2013
  68. algebra

    how do i figure: (-12a^2b^6)^3 over (9a^3b^9)^3

    asked on May 6, 2013
  69. 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
  70. statistics

    a. Compute the mean, median, and mode. b. Compute the variance, standard deviation, range, coefficient of variation, and Z scores. Are there any outliers? Explain. c. Are the data skewed? If so, how? d. Based on the results of (a) through (c), what

    asked on December 23, 2012
  71. 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
  72. 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
  73. 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
  74. 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
  75. 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
  76. Honors Chemistry

    An aqueous solution of NaCl has a concentration of .500 M. 35.0 mL of this solution is allowed to evaporate to a volume of 20.0 mL. a) Is the solution more concentrated or more dilute afterwards? b) What is the new concentration of the solution?

    asked on May 4, 2012
  77. 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
  78. Socials

    I have no idea how to answer this. Write a paragraph from Macdonald's point of view defending the decision you have made. Keep in mind your desire to look good politically and personally in your quest to get re-elected. What decision did Macdonald make??

    asked on March 25, 2012
  79. physics

    Calculate the weight (in English units) of a 2300 kg tiger.

    asked on March 6, 2012
  80. gender roles

    what are characteristics and behaviors that are associated with being male and female in or society?

    asked on February 25, 2012
  81. horizontal displacement physics

    how do we find horizontal displacement in physics?

    asked on February 22, 2012
  82. english-personal growth

    what is a personal growth paper?

    asked on February 14, 2012
  83. 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
  84. 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
  85. 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
  86. ochem

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

    asked on January 29, 2012
  87. history

    What are three myths about the New World and the Indians (Virgin land, inferior, Noble savage)

    asked on January 22, 2012
  88. mecs101

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

    asked on November 16, 2011
  89. middle east culture

    what are some of the different ways that the shariah can be interpreted and applied to modern society?

    asked on November 16, 2011
  90. mecs

    compare the formation of Islamic law to what you know of development of Western legal sytems?

    asked on November 16, 2011
  91. mecs 101

    How has Islamic law attempted to adapt to modernity?

    asked on November 15, 2011
  92. basic chemistry

    a substance that cannot be broken down into susbtances by ordinary chemical means is

    asked on November 8, 2011
  93. chem

    why doesanhydrous hydrogen bromide add to 1-pentene to afford a racemic mixture of. 2-bromopentane, and not 1-bromopentane.

    asked on October 31, 2011
  94. Math

    The market trades in three fixed-income securities: A, B, and C. Security A is a 2-year bond paying 40 at date 1 and 80 at date 2. Security B is a 1-year bond paying 50 at date 1. Security C pays 30 at date 1 and 40 at date 2. Prices are pa=100, pb=45 and

    asked on October 28, 2011
  95. physics

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

    asked on September 27, 2011
  96. 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
  97. 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
  98. 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
  99. 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
  100. 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


  1. 1
  2. 2