Most popular questions and responses by CANDY

    HOW CAN U TELL IF HNO3 +KNO3 IS A BUFFER SOLUTION A buffer solution must contain a weak acid and its conjugate base OR a weak base and its conjugate acid. HNO3 is a strong base and KNO3 is the salt of a strong base (KOH) and a strong acid (HNO3);

    asked on February 27, 2007
  2. Math

    Lesson 8: Mean, Median, Mode, and Range Math 7 A Unit 2: Decimals and Integers 1: FIND THE MEAN OF THE DATA SET 9,4,7,3,10,9 A: 6 B: 7 C: 8 D: 9 2: FIND THE MEDIAN OF THE DATA SET: 9,6,7,3,10,9 A: 6 B: 7 C: 8 D: 9 3: FIND THE MODE OF THE DATA SET:

    asked on September 11, 2018
  3. chemistry

    What are the products of the reaction between nitrous acid and strontium hydroxide?

    asked on April 20, 2014
  4. Language Arts

    At the end of her aunt's story in "The Story-Teller" the older girl ask whether the girl in the story would have been rescued even if she had not been good. What does she seem to think the theme of her aunt's story? What detail in the aunt's story leads

    asked on September 19, 2015
  5. Math

    A manufacturer samples 100 wires for quality testing. Four of the wires are found to be defective. If 750 wires are produced in one hour, how many should the manufacturer expect to be defective? A.30 B.60 C.75 D.96

    asked on April 29, 2014
  6. Chemistry

    A solution of I2 was standardized with ascorbic acid. Using a .1000 g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. A. What is the molarity of the iodine solution? B. What is the titer of the iodine solution?

    asked on November 10, 2010
  7. math

    simplify 10P4 210 360 5,040 151,200 I think 360

    asked on March 5, 2019
  8. Math Help me PLZ!

    1: What is the median of the data set: 25,8,10,35,5,45,40,30,20 A:10 ~ B:22.5 C:25 D:27.5 2: What is the upper quartile of the given data set: 25,8,10,35,5,45,40,30,20 A:35 B:37.5 ~ C:37 D:40 3: What is the lower quartile of the given data set:

    asked on September 12, 2018
  9. MATH 7

    1: What is the median of the data set: 25,8,10,35,5,45,40,30,20 A:10 ~ B:22.5 C:25 D:27.5 2: What is the upper quartile of the given data set: 25,8,10,35,5,45,40,30,20 A:35 B:37.5 ~ C:37 D:40 3: What is the lower quartile of the given data set:

    asked on September 12, 2018
  10. physics

    the terminal velocity of a tennis ball is about 21 m/s. a tennis ball is dropped from a hot air balloon. how fast will it be moving after falling for 10 s? 21m/s, 77m/s, 9.8m/s, or 98m/s.

    asked on December 8, 2016
  11. Math

    Given that rectangle mnop ~and rectangle STUV what is the length of TU

    asked on February 6, 2019
  12. Math

    Solve each equation by using the properties of equality. Check. 4x – 18 = 65

    asked on July 7, 2011
  13. Chemistry

    The combustion of methane gives carbon dioxide and water. CH4 + O2 --> CO2 + H2O For state symbol of water, is it liquid state or gaseous state?

    asked on April 6, 2009
  14. Calculus

    A ball is thrown from the origin of a coordinate system. The equation of its path is y = mx - e^2m/1000 . x^2, where m is positive and represents the slope of the path of the ball at the origin. For what value of m will the ball strike the horizontal axis

    asked on January 29, 2009
  15. Chemistry

    A solution of I2 was standardized with ascorbic acid. Using a .1000 g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. A. What is the molarity of the iodine solution? B. What is the titer of the iodine solution?

    asked on November 10, 2010
  16. Chemistry

    Are the following chemicals light sensitive? 1) Potassium Iodide (KI) 2) Sodium thiosulphate (Na2S2O3)

    asked on January 8, 2011
  17. business statistics

    The director of admissions at a large university says that 15% of high school juniors to whom she sends university literature eventually apply for admission. In a sample 0f 300 persons to whom materials were sent, 30 students applied for admission. In a

    asked on July 29, 2009
  18. Chemistry -pls help urgent

    1) How do I prepare 2M nitric acid from 65% concentrated nitric acid? 2) How do I prepare 17% ammonia from 25% concentrated ammonia? Please show calculation steps. Thanks.

    asked on October 12, 2010
  19. Calculus

    A box with an open top is to be made from a square piece of cardboard by cutting equal squares from the corners and turning up the sides. If the piece of cardboard measures 12 cm on the side, find the size of the squares that must be cut out to yield the

    asked on March 8, 2012
  20. History

    Which of the following best describes attitudes in Germany after World War I

    asked on February 5, 2019
  21. World history

    What is the significance of England's defeat of the spanish Armada?

    asked on December 1, 2013
  22. Calculus

    A closed box is to be a rectangular solid with a square base and volume of 12 ft^3. Find the most economical dimensions if the top of the box is twice as expensive as the sides and bottom.

    asked on March 10, 2012
  23. Physics

    A penny is dropped from the observation deck of the Empire State building (370 m above ground). With what velocity does it strike the ground? Ignore air resistance. answer is in____ m/s.

    asked on February 7, 2010
  24. Social Studies

    What are the causes of problems the Mayas and other Native American groups face in Guatemala? How are people trying to solve these problems?

    asked on June 1, 2015
  25. English

    What is the thesis statement for the song "Firework" by Katy Perry?

    asked on March 6, 2015
  26. Ethical Theory, Business Practice, and the Corpora

    Speedy Motors Company (SMC) gave less than a month notice before they laid off nearly 2,000 workers and closed the facility. This facility had been providing jobs for the community for over 20 years. Terms of the close - what notice would you give, what

    asked on October 6, 2006
  27. Biology

    What three things must be known to perform radiometric dating?

    asked on March 21, 2013
  28. Physics

    A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill, as the drawing illustrates. The crest of the second hill is circular, with a radius of 38.3 m. Neglect friction and air resistance. What must be the height

    asked on February 29, 2012
  29. Physics

    Two identical cars (m = 1350 kg) are traveling at the same speed of 23.9 m/s. They are moving in the directions shown in the drawing. What is the magnitude of the total momentum of the two cars?

    asked on February 29, 2012
  30. Algebra 11

    What do you call it when someone pays back a loan quickly? Someone tell me i don't know the answer!! Prepayment

    asked on June 26, 2007
  31. Calculus

    The strength of a beam with rectangular corss-section is directly proportional to the product of the width and the square of the depth (thickness from the top to bottom of the beam). Find the shape of the strongest beam that can be cut from a cylindrical

    asked on March 10, 2012
  32. Math

    Which ofThe following statements is true All similar figures are also congruent figues

    asked on February 6, 2019
  33. Long term planning

    You would like to begin (or increase) your savings for retirement. What types of retirement plans (401 ks, IRA, etc.) might be best for your personal situation? Be sure to explain the plan you are interested in and why this is best for you. Please help! :

    asked on August 1, 2006
  34. Physics

    A high-jumper clears the bar and has a downward velocity of -6.00 m/s just before landing on an air mattress. The mass of the high-jumper is 50.4 kg. What is the magnitude and direction of the impulse that the air mattress exerts on her? Assume that upward

    asked on February 29, 2012
  35. Science

    Which of the following equations is balanced correctly? A. 3 H20 = H2 + 3 O2 B.2 C2H2 + 5 O2 = 4 CO2 + 2 H2O C.Cl2 + 2 KBr = KCI + Br2 D. 2 C3H3 + O2 = 2 CO2 + H2O

    asked on October 31, 2017
  36. chemistry

    Which will make you more wealthy, one mole of pennies (6.02e23 pennies) or one mole of gold atoms (6.02e23 atoms)?

    asked on October 13, 2012
  37. drawing

    21) The number of oil spills occurring off the Alaskan coast A) Discrete B) Continuous Find the odds. 22) When a single card is drawn from an ordinary 52-card deck, find the odds in favor of getting a red 10 or a black 6. A) 2: 25 B) 1 : 13 C) 1 : 25 D) 1

    asked on June 10, 2011
  38. Physics

    A penny is dropped from rest from the top of a very tall building. Assuming the height of the building is 406 m and ignoring air resistance, find the speed with which the penny strikes the ground.

    asked on January 27, 2012
  39. Algebra

    The heat generated by a stove element varies directly as the square of the voltage and inversely as the resistance. If the voltage remains constant, what needs to be done to triple the amount of heat generated? I need to know why this makes sense or not.

    asked on November 18, 2014
  40. Algebra

    Find the degree of each monomial -3

    asked on February 11, 2013
  41. Cost Accounting

    The accounting records of Nu-tonics Inc., include the following information for the year ended December 31, 2013: Materials Inventory as at 1 January 2013 $ 20,000 Materials Inventory as at 31 December 2013 $ 24,000 Work in process Inventory as at 1

    asked on April 29, 2014
  42. English

    Are these correct? Here, I am supposed to label the sentences interrogative,exclamatory,imperative, and declarative. Then, I have to put the correct punctuation mark beside it. 1.Look at the apes Look at the ape (imperative) 2. How clever they are How

    asked on August 4, 2010
  43. Chemistry

    Metals above hydrogen in the reactivity series react with dilute hydrochloric acid or dilute sulphuric acid to give metal chloride + hydrogen. 1)Is it correct to say that we use dilute acid,not concentrated acid because the reaction can take place with

    asked on January 25, 2009
  44. Math

    I can not figure out this problem can you please help me solve it? Emma made a rectangular picture frame with the height of 25 5/6 inches. The frame is 5 2/3 inches wide. What is the height of the picture Emma placed in th picture frame? Explain how you

    asked on June 1, 2016
  45. history

    What was the significance of Zheng He's voyages of exploration? What was the significance of Columbus's voyages of exploration?

    asked on December 14, 2013
  46. chemistry

    Which molecule or compound below contains a polar covalent bond? Student Response A. NCl3 B. C2H4 C. ZnS D. AgCl E. LiI

    asked on April 17, 2011
  47. math

    Write the answer to the problem as an algebraic expression. A theater ticket for adults is a dollars and the price of a child's ticket is C dollars. If 29 adults and 45 children attend the theater one night, how much money did the theater make? 29a + 45c

    asked on July 12, 2011
  48. Chemistry

    When drawing the 'dot and cross' diagram to show the ionic bonding in aluminium oxide, Al2O3, do we place the nos "2" and "3" in front of the brackets containing the 'dot and cross' diagram, e.g 2[Al]3[O]? I notice that some books place the "2" and "3" as

    asked on April 2, 2009
  49. Math

    How do I find the value of x if The quadrilateral is 60° 80° 128 help do I add sides for 268?

    asked on February 5, 2019
  50. Math

    An arithmetic sequence has a first term of 0 and a 10th term of 15. If 10 is an output of the sequence, which term number is it? Show and explain how you know you have the correct answer.

    asked on February 17, 2017
  51. Chemistry

    This is a limit test for chlorides. 1.0g of NaOH sample was dissolved in 5ml of deionized water, acidified with 4ml of concentrated nitric acid (65%) and diluted to 15ml with deionized water. (Test tube A) 10ml of 50ppm Standard NaCl solution was prepared.

    asked on September 24, 2010
  52. Physics Help!

    Q.1:What would a drummer do to make the sound of a drum give a note of lower pitch? a.hit the drum skin with a larger force. b.hit the drum skin with a smaller force. c.hit the drum skin nearer the edge. d.loosen the drum skin. d will work.

    asked on April 14, 2007
  53. World history

    What benefits might absolute monarchs hope to gain by increasing their countries' territory?

    asked on December 1, 2013
  54. Algebra

    For the fundraiser, will sold 225 candy bars.he earns $1 for each almond candy bar he sells and $0.75, how many of each type of candy bar did he sell for the fundraiser? solving systems using elimination

    asked on January 30, 2013
  55. physics

    A skier slides horizontally along the snow for a distance of 22.3 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is 0.0500. Initially, how fast was the skier going?

    asked on February 27, 2012
  56. Unit 4 memory, thinking, and intelligence

    In this activity, you can replicate Sternberg et al.'s initial study by having your students list behaviors that are associated with academic and everyday intelligence. Ask your students to take out two sheets of paper. Tell them to label the first sheet

    asked on September 20, 2006
  57. history

    What 2 languages created the swahili language?

    asked on December 13, 2013
  58. Algebra-Trig Please Help ASAP

    A balloon isin the vertical plane of two consecutive milestones of a road. The angles of depression of the stones as viewed from the balloon are 15 degrees and 17 degrees. Find the height of the balloon if (a) the stones are on opposite sides of the

    asked on February 15, 2012
  59. Biology

    Could two humans (or two cows) have some differences in their DNA sequences for insulin, yet still make the exact same insulin proteins? Explain.

    asked on January 30, 2018
  60. Geometry

    Write the ratio of the first measurement to the second measurement. Diameter of care tire:40cm Diameter of care tire:18mm I'm not sure hoow to do this. May someone explain how to do this problem.

    asked on February 12, 2014
  61. World history

    In what ways did Louis XIV cause suffering to the french people?

    asked on December 1, 2013
  62. Math

    Can I please get help on the questions for 'What do you get if a bunch of bad guys fall in the ocean?' on page E-53? Please help, been on this for about 3 hours already!

    asked on March 31, 2013
  63. Algebra 1

    The area of a rectangular floor is 8x+6x-20. The width of the desktop is 2x+4. What is the length of the floor?

    asked on March 7, 2013
  64. Finance

    Company A wants to issue new 20-year bonds for needed projects. The company currently has 10 percent coupong bonds on the market that sell for $1,063, make semiannual payments, and mature in 20 years. What coupon rate should the company set on its new

    asked on November 10, 2011
  65. SS

    1. To all white Southerners, except Confederate leaders, Lincoln offered (1 point) amnesty. reconstruction. freedom. the Ten Percent Plan. 2. What agency helped freed African Americans by establishing schools? (1 point) Reconstruction Bureau Wade-Davis

    asked on April 26, 2016
  66. statistics

    If weight in the general population is normally distributed with an average of 160 and a standard deviation of 20 pounds, what is the probability of selecting someone who weights 120 or less or 170 or more pounds?

    asked on February 27, 2015
  67. Algebra 1

    2k^2-13k-24 Factor the expression..

    asked on March 7, 2013
  68. Physics

    One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour. A kilowatt-hour is the unit of energy used by power companies when figuring your electric bill. Determine the number of joules

    asked on February 29, 2012
  69. Physics

    A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 73.0-kg water-skier has an initial speed of 7.1 m/s. Later, the speed increases to 10.9 m/s. Determine the work done by the

    asked on February 27, 2012
  70. physical science

    A butterfly at eye level is 18 cm in front of an plane mirror. You are behind the butterfly, 45 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror?

    asked on April 5, 2010
  71. Business Environment and Recording Transactions

    Give an example of a business transaction that has the described effect on the accounting equation: Increase an asset and increase a liability. Increase one asset and decrease another asset. Decrease an asset and decrease owner's equity. Decrease an asset

    asked on August 30, 2006
  72. Algebra

    show a graph that best represents a first-degree polynomial p(X).

    asked on October 10, 2018
  73. Calculus

    Two ships are leaving port at the same time. The first ship is sailing due east at 20 km/hr and the other due north at 15 km/hr. How fast are the ships moving away from each other 2.0 hr later?

    asked on March 10, 2012
  74. Calculus

    A cicular metal plate is being heated and expands so that its radius increases at the rate of 0.25 mm/min. How fast is the area increasing when the radius is 10 cm?

    asked on March 10, 2012
  75. Physics

    A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 73 kg, and the height of the water slide is 12.0 m. If the kinetic frictional force does

    asked on February 29, 2012
  76. Chemistry

    1) When calcium is reacted with cold water, the equation is as follows: - Ca(s) + H2O(l) -->Ca(OH)2(aq) + H2(g) Isn't Ca(OH)2 insoluble? Why is the state symbol aqueous? When I conducted the experiment in a test tube with cold water, I got a white

    asked on January 31, 2009
  77. Unit 5 Behavior Across the Lifespan

    Give a description of Erikson’s theory, including the stages of development using the criteria listed above. 2. Identify a character at each stage. 3. Choose three of the following studies found in the Library article search engine Psychology and

    asked on September 24, 2006
  78. Unit 5 - Group project

    Your group has been hired by an advertising firm that is developing a series of commercials for family-oriented products geared toward the entire family. They want to develop a series of commercials that will target family members at various life stages.

    asked on September 21, 2006
  79. math

    Which of the following equations represents the line that passes through the point (0, -6) and that is parallel to the line x - 4y - 5 = 0? A x -4x - y - 6 = 0 B x 4x - y - 6 = 0 C x x - 4y - 24 = 0 D x x - 4y + 6 = 0

    asked on February 8, 2018
  80. Math

    You are looking at a map with a scale of 1 inch equals 50 miles. If two towns are separated on the map by 8 ​inches, what is the actual distance between​ them?

    asked on January 15, 2016
  81. algebra

    Solve the system by substitution: -4.5x-2y=-12.15 3.25x-y=-0.75

    asked on September 18, 2013
  82. Calculus

    The total charge in an electrical circuit as a function of time is given by q=t/(t^2+1) coulombs. Find the maximum charge of q.

    asked on March 10, 2012
  83. Physics

    A 279 N force is pulling an 75.9-kg refrigerator across a horizontal surface. The force acts at an angle of 26.3 ° above the surface. The coefficient of kinetic friction is 0.259, and the refrigerator moves a distance of 9.14 m. Find (a) the work done by

    asked on February 27, 2012
  84. Chemistry-help needed

    Can we use an AR grade chemical for UV spectrometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?

    asked on February 17, 2011
  85. Chemistry - pls help

    This is a limit test for chlorides. 1.0g of NaOH sample was dissolved in 5ml of deionized water, acidified with 4ml of dilute nitric acid and diluted to 15ml with deionized water. (Test tube A) 10ml of 50ppm Standard NaCl solution was prepared. 5ml of

    asked on September 22, 2010
  86. Physics

    An airplane lands and starts down the runway at a southwest velocity of 43 m/s. What constant acceleration allows it to come to a stop in 1.2 km?Answer is in ___ m/s2.

    asked on February 7, 2010
  87. Chemistry

    Which is most polarized noble gas? 1-Krypton 2-Xenon 3-Helium 4-Neon. I think the one with the highest atomic number would be the most polarized one. Just a thought.

    asked on April 6, 2007
  88. Biological Influences

    Benjamin O'Henry has owned and operated O'Henry's Data Services since its beginning ten years ago. From all appearances, the business has prospered. In the past few years, you have become friends with O'Henry and his wife. Recently, O'Henry mentioned that

    asked on September 8, 2006
  89. History

    What were the pros and cons of the U.S. gaining Oregon? Also, What were the pros and cons of the U.S. gaining Gadsden Purchase?

    asked on November 1, 2016
  90. statistics

    Assume that the regression equation for the relationship between SAT scores and IQ scores is y = 9 +.105x. What would you expect the IQ score to be for the following individuals, given their SAT scores? Individual SAT Score IQ Score Susan 850 Sally 1175

    asked on February 27, 2015
  91. Algebra 1

    6t^2+21t-12 Factor the expression I don't know how to figure it out

    asked on March 7, 2013
  92. Algebra

    The sum of two numbers is 19, and their difference is 55. What are the two numbers? Solving systems using elimination

    asked on January 30, 2013
  93. Chemistry help asap

    I need help with this ideal gas law problem I know how to set the equation up but I'm not getting the correct answer. How many moles of gas can be contained in a 1.44 L flask at 32Celsius and 93.5kPa?

    asked on May 3, 2012
  94. Calculus

    Water reaches its maximum density above its freezing point. The volume V (in cubic diameters) of 1 kg of water at temperature T between 0 degrees C and 30 degrees C can be approximated by the formula V=999.87 - 0.06426T + 0.0085043T^2 - 0.0000679T^3. Find

    asked on March 10, 2012
  95. Chemistry-help needed

    0.3g of clotrimazole (C22H17ClN2) was dissolved in 80ml of anhydrous acetic acid. This was titrated with 0.1M perchloric acid using 0.3ml of naphtholbenzein as indicator until the colour changes from brownish-yellow to green. 1ml of 0.1M perchloric acid is

    asked on March 9, 2011
  96. Chemistry-help

    I am rather confused about writing ionic equations. 1) SOLID sodium carbonate reacts with hydrochloric acid to give NaCl,CO2 & H2O. Is the ionic equation CO32-(aq)+2H+(aq)-> CO2(g) + H2O(l)? Do I consider SOLID sodium carbonate to be in aqueous state since

    asked on April 10, 2009
  97. Chemistry

    Hi Dr Bob, I understand the 2nd method but need to clarify the 1st method.If I only wish to draw 1 Al and 1 O, then I need to include the "plus" sign and draw the 'dot and cross' diagram as 2[Al]+ 3[O] , with the charges of course, right? Posted by candy

    asked on April 2, 2009
  98. Chemistry-please help

    1) Metals that are above hydrogen in the reactivity series react with dilute hydrochloric acid to produce hydrogen gas. Lead is just above hydrogen in the reactivity series.I read a book that says no reaction occurs between lead & dilute acid. Why? Is it

    asked on January 26, 2009
  99. math

    y= 2sin^2 x y=1- sinx find values of x inthe interval 0

    asked on December 14, 2006
  100. Science

    1.) Robin hood shoots an arrow up in the night sky. What is the acceleration at the very top of its path? 2.) Juan's car has an acceleration = -2.76m/s^2 and a velocity = 43m/s. Is he slowing down or speeding up?

    asked on October 20, 2014


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