Most popular questions and responses by Kim
  1. math

    In the middle of the page, draw two circles an inch apart. Then draw a slight arch going up from the right edge of the left circle to the left edge of the right circle. Then draw a diagonal line out from the left edge of the left circle. This line should

    asked on February 29, 2016
  2. English

    please check my answers 1.Mr.Peters comes to bed one night and finds leita calling out in her sleep. How does this scene reveal her internal conflict? her dream, she is talking of her fear of leaving Mr.Peters her dream, she is afraid of the

    asked on March 26, 2019

    Rate of Change You are given the dollar value of a product in 2008 and the rate at which the value of the product is expected to change the nest 5 years. write a linear equation that gives the dollar value V of the product in terms of the yeart.(let t= 0

    asked on September 26, 2009
  4. Chemistry

    Write the formulas of the compounds formed by NH4+ with the following anions: CN-, ClO3-, SO42-, H2PO4-

    asked on November 25, 2015
  5. Chemistry

    I have a few question about an equilibrium lab we performed. Approximately .1 g of CoCl2 * 6H2O was mixed with 2 mL of 12 M HCl. The solution turned blue. Then, water was added and stirred into the solution in 2 mL incriments until no further color change

    asked on May 29, 2007
  6. chemistry

    Identify the neutral element represented by this excited-state electron configuration, then write the ground-state electron configuration for that element. Excited State: 1s2 2s2 2p2 3s1 Element Symbol: ? Ground State: ?

    asked on September 30, 2013
  7. chemistry

    Write the balanced net ionic equation for the following reaction and determine the conjugate acid-base pairs. HNO3(aq)+Li2CO3(aq)LiNo3(aq)+LiHCO3(aq) Which component in the net ionic equation is the acid, the base, the conjugate base, and the conjugate

    asked on April 29, 2015
  8. General Chemistry

    A 230.0mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning the solution is 1.50M. What volume of solvent has evaporated from the 0.275 M solution? a)42.2 mL b)63.3 mL c)187.8 mL d)230 mL e)272.2 mL

    asked on June 20, 2012
  9. Accounting - Please check me

    Indicate whether a debit or credit decreases the normal balance of each of the following accounts. Office Supplies- debit Repair Service Revenue- debit Interest Payable- debit Accounts Receivable- creditSalaries Expense- debit Owner Capital- credit Prepaid

    asked on April 8, 2008
  10. Business

    I am trying to write a 1500 words review of two articles that are discussing ethical perspectives or business ethics for two countries. Each article must contain info. on a different foreign country on a different continent; for example, if the first

    asked on January 16, 2011
  11. Algebra

    there are 10 students in a social studies class. three students will be selected to present their term projects today. In how many different orders canthree students be selected?

    asked on May 19, 2014
  12. Spanish please help!

    Complete each sentence with the correct form of the verb in parentheses. 1. La clase de matemáticas (terminar) a las cuatro. 2. ¿Te gusta (estudiar) psicología? 3. La profesora (explicar) el mapa. 4. Necesito (comprar) el libro de español. 5. Ustedes

    asked on March 10, 2013
  13. chemistry

    a metal object has a mass of 8.37g. when it was placed in a graduated cylinder containing 20.0ml of water, the water level rose to 23.1 ml. what is the density and identity of the metal?

    asked on February 16, 2014
  14. Calculus Help

    A model for the length of daylight (in hours) in Philadelphia on the tth day of the year is L(t) = 12 + 2.8 sin[(2π/365)(t − 80)]. Use this model to compare how the number of hours of daylight is increasing in Philadelphia on March 21 and April 21.

    asked on March 9, 2014
  15. Maths

    Principal - 6000 Rate - 5% Effective Date - May 15 Maturity Date - November 1 Partial Payment Amount - $1500 Partial Payment Date -August 15 Also Answer the following questions: 1. NUMBER OF DAYS BETWEEN EFFECTIVE DATE AND PARTIAL PAYMENT = 2. INTEREST ON

    asked on March 10, 2008
  16. Calculus Help Please!!!

    Compute Δy and dy for the given values of x and dx = Δx. (Round your answers to three decimal places.) y = 3x − x^2, x = 3, Δx = −0.6 Δy=???

    asked on March 30, 2014
  17. chemistry

    29.0g Ag combine completely with 4.30g S to form a compound. what is the percent composition of each element in this compound

    asked on November 19, 2014
  18. Math

    Which of the following is a factor of both x2- x-6 and x2 - 5x + 6

    asked on March 13, 2017
  19. calculus

    Find f(x+ (delta)x)- f(x) --------------------- (delta)x if f(x)=8x(squared)+ 1 This is so confusing! What is all the delta x stuff?

    asked on September 18, 2008
  20. AP Chemistry

    what is the molecular shape of OCCl2 ion? C is the central atom. Options: 1. seesaw 2. tetrahedral 3. trigonal pyramidal 4. trigonal planar 5. trigonal bypyramidal 6. octahedral

    asked on July 14, 2010
  21. Chemistry

    We performed a lab in class about a month ago concerning different types of equilibrium. One particular portion of the lab adding 5 mL of .3M HCl to 5 mL of .3 M Pb(NO3)2. After a precipitate finally formed, 8 mL of water was added to dissolve PbCl2. One

    asked on May 28, 2007
  22. Trigonometry

    A painter needs to cover a triangular region 62 meters by 68 meters by 70 meters. A can of paint covers 70 square meters. How many cans will be needed?

    asked on April 24, 2009
  23. organic chemistry

    1)Why benzoic acid is soluble in NaOH? 2)Why HCl is insoluble in titration of benzoic acid and NaOH? Benzoic is soluble in a solution of NaOH because the base forms the sodium salt with the acid to form sodium benzoate. The sodium salt is soluble. The

    asked on February 21, 2007
  24. English

    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 2, 2019
  25. Math

    If the third of 6 consecutive numbers is 12, what is their sum?

    asked on April 15, 2018

    1)Each state has a dental board of examiners responsible for enforcing that particular state's Dental Practices Act (DPA). The DPA contains similar requirements for dentist conduct. Which of the following is not covered by the DPA? A. Americans with

    asked on August 7, 2014
  27. Math

    Javia ran 8 laps around a track to run a total of 1 mile on Monday. How many laps will she need to run on Tuesday to run 3/8 of a mile?

    asked on February 26, 2013
  28. Chemistry

    how do u complete these questions? 2HCI(aq)+Pb(NO3)2(aq)---> 2HI(aq)+K2SO3(s)---> Pb(NO3)2(aq)+2KCI(aq)---> Ba(NO3)2(aq)+Na2SO4(aq)---> K2CO3(aq)+Ba(NO3)2(aq)---> HCI(aq)+AgNO3(aq)--->

    asked on February 28, 2012
  29. Calculus-Modeling Equations

    An unknown radioactive element decays into non-radioactive substances. In 420 days the radioactivity of a sample decreases by 39 percent. 1.What is the half-life of the element? 2.How long will it take for a sample of 100 mg to decay to 46 mg?

    asked on March 6, 2009
  30. physics

    What will a spring scale read for the weight of a 50 kg woman in an elevator that moves as follows? (a) upward with constant speed of 3.0 m/s Enter a number.1 N (b) downward with constant speed of 3.0 m/s Enter a number.2 N (c) upward with acceleration of

    asked on December 18, 2009
  31. Chemistry

    When 2 mol of solid magnesium (Mg) combines with 1 mole of oxygen gas (O2), 2 mol of solid magnesium oxide (MgO) is formed and 1204kJ of heat is released. Write the thermochemical equation for this combustion reaction.

    asked on May 19, 2010
  32. statistic

    A lottery ticket has a grand prize of $28 million. The probability of winning the grand prize is .000000023. Based on the expected value of the lottery ticket, would you pay $1 for a ticket? Show your calculations and reasoning clearly.

    asked on August 27, 2010
  33. Physics

    How much energy is needed to melt 0.225 kg of lead so that it can be used to make a lead sinker for fishing? The sample has an initial temperature of 27.3 degrees celsius and is poured in the mold immediately after it has melted. Not sure if this is

    asked on March 30, 2010
  34. Chem

    I stuck on this problem. Can you help me to solve it? A reaction mixture in a 3.67L flask at a certain temp. initially contains 0.763g H2 and 96.9g I2. At equilibrium, the flask contains 90.4g HI. Calculate the equilibrium constant(Kc) for the reaction at

    asked on October 17, 2010
  35. science (chem)

    consider the fo9rmula for Al2(SO4)3,which is used in perspirants: a. how many moles of sulfur are present i 3.0 moles of Al2(SO4)3 b. ow many moles of aluminum ions are present in 0.40 mole of Al2(SO4)3 for a and b i multiplied by 6.02*1023 power andgot

    asked on September 30, 2011
  36. Chemistry

    If 50.0 g of silicon dioxide is heated with an excess of carbon, 27.9g of silicon carbide is produced. SiO2(s) + 3C(s) --> SiC(s) + 2CO(g) what is the percent yield of this reaction?

    asked on March 28, 2010
  37. 11th grade

    What do you call a female bug that floats? it has to do with algebra. It shows you solutions and graphs. the graphs have letters in front of them so you can try and figure out what the answer is.

    asked on February 3, 2010
  38. math

    Caleb needs to create an 8-digit password using only numbers. How many different passwords are there if he wants to use 00 exactly once?

    asked on July 9, 2017
  39. Chem

    Calculate the number of C atoms in 0.185 C6H14O.

    asked on September 28, 2012
  40. Chemistry

    Methanol (CH3OH) is used in the production of many chemicals. methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure. CO(g) + 2H2(g) ==> CH3OH(g) a) How many moles of each reactant are needed to produce 3.60 x 10^2 g

    asked on April 5, 2010
  41. math

    Write 0.026 As a sum using powers of 10 to show place value

    asked on February 11, 2013
  42. math

    which is Q=200p/l solved for p is it p=QL/200

    asked on May 6, 2016
  43. Chem--- last lab question!!

    My lab partner performed one section of a lab on her own while I worked on something else. This section involved first adding a drop of 6 M NaOH to Zn(NO3)2. A precipitate forms. This is repeated in three separate test tubes. In each test tube, a different

    asked on May 29, 2007
  44. Science

    Two 20.-newton forces act concurrently on an object. What angle between these forces will produce a resultant force with the greatest magnitude? (1) 0° (2) 45° (3) 90.° (4) 180.°

    asked on June 12, 2015
  45. Chemistry

    The mass of a single barium atom is 2.28E-22 grams. How many barium atoms would there be in 182 milligrams of barium?

    asked on January 23, 2013
  46. Chemistry

    Lithium nitride reacts with water to form ammonia and aqueous lithium hydroxide. Li3N(s) + 3H2O(l) ==> NH3(g) + 3LiOH(aq) a)What mass of water is needed to react with 32.9g Li3N? b)When the above reaction takes place, how many molecules of NH3 are

    asked on April 5, 2010
  47. chemistry

    which pair(s) of liquids will be miscible ? H2O AND CH3CH2CH2CH2CH3(PENTANE) C6H6 (BENZENE) AND CCl4(CHLOROFORM) C2H5OH (ETHANOL) AND CH3COOH(ACETIC ACID) how do you know if they are miscible?

    asked on March 16, 2012
  48. physics

    A projected space station consists of a circular tube that will rotate about its center (like a tubular bicycle tire) as shown in the figure . The circle formed by the tube has a diameter of about 1.1 km. What must be the rotation speed (revolutions per

    asked on September 22, 2012
  49. Science

    What happens in the phloem 1. Water Moves up from roots. 2. Food moves down from leaves. 3. Food moves up from leaves. 4. Water moves down from leaves.

    asked on October 14, 2018
  50. Cash Budgeting Question

    Cash Budgeting – Helen Bowers, owner of Helen’s Fashion Designs, is planning to request a line of credit from her bank. She has estimated the following sales forecasts for the firm for parts of 2006 and 2007: May 2006 $180,000 June

    asked on December 10, 2006
  51. Chemistry

    How much ice (in grams) would have to melt to lower the temperature of 53.4g of water from 65 C to 0C? I know there are more than one step here, I would appreciate an answer that does not do the work for me, but show me how to lay out the problems and in

    asked on April 26, 2013
  52. Chemistry

    What is the boiling point of each solution? a).50mol glucose in 1000g H2O b)1.50mol NaCl in 1000g H2O

    asked on April 29, 2010
  53. Math

    How long will it take a passenger train traveling at 160 miles per hour to travel from Denver, Colorado to Lincoln,Nebraska? The distance between the two cities is 488 miles

    asked on November 4, 2018
  54. Chemistry Titration Lab

    We did not use the volume of the water added initially to the Erlenmeyer in our calculations. Why?

    asked on April 21, 2011
  55. physics- PLEASE HELP

    2. A .12 kg ball is moving at 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. What is the change in the magnitude of the momentum of the ball? 4. Lonnie pitches a baseball of mass .2 kg. The ball arrives at home

    asked on December 3, 2008
  56. Help Please!!!!

    The oral evacuation system is held with the _______ grasp. A. thumb-to-nose B. palm C. thumb-ring D. pinky-to-nose I said B and was wrong. Thank you!

    asked on August 9, 2014
  57. social studies

    why was solon important? A. he was the macedonian king who united Greece B. he set up salaries for officials so poor people could serve C. he was the general who defeated the persian invaders D.he ended slavery for people who fell in debt i think its A

    asked on August 15, 2017
  58. Physics Help!!!!

    A runner in a relay race runs 20m north, turns around and runs south for 30 m, then turns north again and runs 40m. the entire run took 30 seconds. what was the average speed of the runner? what was the average velocity of the runner?

    asked on August 30, 2014
  59. chem 101

    How many kilojoules of heat are needed to completely vaporize 42.8 g of C4H10O at its boiling point? Given Hvap=26.5kj/mol

    asked on April 14, 2014
  60. psy202

    which of the following do experts recommend regarding the search for information on the internet avoid boolean operators since new technology has made them obsolete stick to one search engine like google so that bookmarks are better organized bookmark any

    asked on September 17, 2013

    Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much of this money is put into a fund called an endowment, and the college spends only the interest earned by the fund. A recent

    asked on February 15, 2011
  62. chemistry

    Write the balanced net ionic equation for the following reaction and determine the conjugate acid-base pairs. HNO3(aq)+Li2CO3(aq)LiNo3(aq)+LiHCO3(aq) Which component in the net ionic equation is the acid, the base, the conjugate base, and the conjugate

    asked on April 30, 2015
  63. science

    how many half-lives have passed if 87.5% of a substance has decomposed? how many if 99.999% has decomposed?

    asked on March 14, 2011
  64. physics

    The consumption of natural gas by a company satisfies the empirical equation V=1.50t+0.008t^2, where V is the volume in millions of cubic feet and t the time in months. Express this equation in units of cubic feet and seconds. Put the proper units on the

    asked on August 6, 2005
  65. Chemistry Help Please!!!

    What is the greatest source of error for the hydrolysis of salts and pH of buffer solutions lab?How would you minimize this source of error?

    asked on March 29, 2014
  66. math

    A salesperson needs to visit 15 different offices during the week. In how many ways could she visit 3 different offices each day from Monday to Friday?

    asked on July 9, 2017
  67. Math

    Which cosine function has maximum of 0.5, a minimum of -0.5, and a period of 2pi/3?

    asked on May 19, 2014
  68. MUSIC

    What is meant by Caribbean music in a new mode What emphasis, in this chapter, seems to justify a departure from traditional presentations of music and culture of the Caribbean?

    asked on July 9, 2013
  69. algebra

    solve the equations justify each step with and algebraic property 13=x/4

    asked on September 1, 2016
  70. Chem

    Which of the following will be more soluble in an acidic solution than in pure water? 1.PbBr2 2.CsClO4 3.Cd(OH)2 4.Ag2(SO4) 5.BaSO3 How can I find which is which? Could you tell me the best way to find which one is more soluble? Thank you!

    asked on October 26, 2010
  71. Managerial accounting

    Han Products manufactures 30,000 units of part S-6 each year for use on its production line. At this level of activity, the cost per unit for part S-6 is as follows: Direct materials $ 3.60 Direct labor 10.00 Variable manufacturing overhead 2.40 Fixed

    asked on September 15, 2011
  72. math

    Use the formula S equals 2 left-parenthesis l w right-parenthesis plus 2 left-parenthesis l h right-parenthesis plus 2 left-parenthesis w h right-parenthesisto find the surface area of a rectangular prism with the following dimensions: length = 2 cm width

    asked on March 9, 2018
  73. Physics

    The linear impulse delivered by the hit of a boxer is 97.7 N·s during the 0.368 s of contact. What is the magnitude of the average force exerted on the glove by the other boxer? Answer in units of N.

    asked on January 11, 2015
  74. Chemistry

    Calculate the percent by mass of water in magnesium sulfate heptahydrdrate (MgSO4-7H2O)

    asked on April 13, 2010
  75. Chemistry

    Calculate the enthalpy change (delta H) in kJ for the following reaction. 2Al(s) + Fe2O3 (s) ==> 2 Fe(s) + Al2O3(s) use enthalpy changes for the combustion of aluminum and iron. 2Al(s) + 3/2 O2(g) ==> Al2O3(s) Delta H: -1669.8 kJ 2Fe(s) + 3/2 O2(g) ==>

    asked on May 23, 2010
  76. physics

    A solid sphere of weight 36.0 N rolls up an incline at an angle of 30.0o. At the bottom of the incline the center of mass of the sphere has a translational speed of 4.90 m s-1. Isphere = 2/5mr^2. What is the kinetic energy of the sphere at the bottom of

    asked on November 13, 2008
  77. chemistry

    An ice cube with a mass of 40.0 g melts in water originally at 25.0 degree C. a. How much heat does the ice cube absorb from the water when it melts. Report the answer in calories, kilocalories, joules b. Calculate the number of grams of water that can be

    asked on April 27, 2010
  78. Math, number and operations base

    I have 8 thousands,17 tens, 5 hundreds, and 12 ones. What number am I?

    asked on September 15, 2016
  79. Physics

    A constant force is exerted for a short time interval on a cart that is initially at rest on an air track. This force gives the cart a certain final speed. Suppose we repeat the experiment but, instead of starting from rest, the cart is already moving with

    asked on February 6, 2015
  80. Algebra

    Find all points on the x-axis that are 10 units from the point (7, 6). (Hint: First write the distance formula with (7, 6) as one of the points and (x, 0) as the other point.)

    asked on October 6, 2014
  81. Chemistry

    Consider the reaction 2H2O(g) --> 2H2(g) + O2(g) deltaH = +483.6 kJ/mol at a certain temperature. If the increase in volume is 32.7 L against an external pressure of 1.00 atm, calculate deltaU for the reaction. (1 L * atm = 101.3 J)

    asked on November 8, 2012
  82. Chemistry

    When 84.8 g of iron(III) oxide reacts with an excess of carbon monoxide, iron is produced. Fe2O3(s) + 3CO(g) ==> 2Fe(s) + 3CO2(g) what is the theoretical yield of iron?

    asked on March 28, 2010
  83. chemistry

    The charge and identity of an ion with 16 protons, 18 electrons and 17 neutrons would be?

    asked on February 6, 2013
  84. Chemistry

    A mixture of ethyne gas (C2H2) and methane gas (CH4) occupied a certain volume at a total pressure of 16.8 kPa. When the sample burned, the products were CO2 gas and H2O vapor. The CO2 was collected and its pressure found to be 25.2 kPa in the same volume

    asked on March 21, 2011
  85. Math

    Time for running the Boston Marathon is 2.12 hours at an average speed of 12.5 miles per hour. What distance does the Boston Marathon approximately cover?

    asked on November 4, 2018
  86. calculus

    A point in the first quadrant lies on the parabola y = x^2. Express the coordinates of P as function of the angle of inclination of the line joining P to the origin

    asked on September 8, 2010
  87. physics question

    I have a question about a problem regarding Newton's third law. a. An iron rod is held up by a magnet. The magnet is held up by a string (from a ceiling, let's say). Draw a free-body diagram for the magnet and a separate free-body diagram for the iron rod.

    asked on November 21, 2006
  88. math

    Mike's age right now is exactly 3 times his age 3 years hence minus 3 times his age 3 years ago. How old is Mike right now?

    asked on February 16, 2017
  89. Calculus

    for what values of r does the function y=e^rx satisfy the differential equation y''-4y'+y=0 Show steps please! Thank you!

    asked on March 7, 2014
  90. Chemistry

    How many moles of chloride ions are in 100mL of a 0.3molar solution of AlCl3? #moles Cl =(.3M AlCl3)(.1L)(105g/mol / 132g/m0l)

    asked on October 6, 2015
  91. physics

    Two particles, with identical positive charges and a separation of 2.60 x 10^-2 m, are released from rest. Immediately after the release, particle 1 has an acceleration a1 whose magnitude is 4.60 x 10^3 m/s^2, while particle 2 has an acceleration a 2 whose

    asked on April 26, 2010
  92. Statistics

    Suppose x is a uniform random variable with values ranging from 20 to 70. Find the probability that a randomly selected observation is between 23 and 65.

    asked on April 13, 2017
  93. Chem

    1) A 15.0 g sample of nickel metal is heated to 100.0 C and dropped into 55.0 g of water, initially at 23.0 C. Calculate the final temperature of the nickel and the water, if the specific heat capacity of nickel is 0.444 j / g x C. 2) In a coffee-cup

    asked on November 11, 2008
  94. Statistics

    Suppose x is a uniform random variable with values ranging from 40 to 60. Find the probability that a randomly selected observation exceeds 54. *** Im not sure how to do this. I thought I needed a standard deviation.

    asked on April 13, 2017
  95. Math

    Suppose you draw a card from an ordinary deck of playing cards What are the odds in favor of drawing a face card? b. What are the odds against drawing a face card?

    asked on October 7, 2015
  96. math

    How a write 3,552,308,725 in word form

    asked on August 14, 2013
  97. Criminal justice

    As interpreted by the US Supreme Court which of the following individual rights is not guaranteed by the bill of rights? A right to have an attorney A right to an appeal A right to a trial by jury*** A right to due process I believe it is a right to a

    asked on December 9, 2017
  98. chemistry

    Ethyl alcohol (CH3CH2OH) has a heat of fusion of 5.01 kj/mol. How much heat in kj is required to melt 137g of ethyl alcohol.

    asked on June 21, 2010
  99. Math

    3. What is 0.72 written as a simplified fraction? (1 point) 72/100 100/72 36/50 18/25 4. Ms. Johnson’s class is having a pizza party. If there are 14 students and 7 pizzas cut into 8 slices, what answer choice represents the fraction of one pizza that

    asked on September 19, 2019
  100. Seattle central college

    Which of the following is author’s opinion a. Olmsted - was appoint superintendent and worker began cleaning the land for construction. b. After a vote by park commissioner, Vaux and Olmsted become the officer design of Central Park. c. Calvert Vaux, a

    asked on March 21, 2018


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