Questions Asked in October 2008

Most Popular Questions of October 2008

  1. algebra math riddle...

    how many cattle are there on the lazy circle double-o four square ranch?

    asked by noname on October 2, 2008
  2. Math

    Algebra Riddle with PIZZAZZ "Did you hear about..."

    asked by JC on October 26, 2008
  3. Chemistry: please double check...

    Please double check one last time have to hand it in tomorrow.Thank-You in Advance. This was the lab experiment: ------------------------------------------- A. Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium

    asked by Saira on October 27, 2008
  4. Physics

    A child's toy consists of a block that attaches to a table with a suction cup, a spring connected to that block, a ball, and a launching ramp. (Intro 1 figure) The spring has a spring constant k, the ball has a mass m, and the ramp rises a height y above

    asked by Sam on October 31, 2008
  5. chem

    For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Al(s)+3O2 (g)-->2Al2O3 (s) 4 mol Al 2.6 mol O2

    asked by natash on October 1, 2008
  6. chemisty

    Calculate the density of oxygen,O2 , under each of the following conditions: 1- STP 2- 1.00 atm and 35.0 C

    asked by unknown on October 8, 2008
  7. Math

    what do you call two railroad trains after a head-on collision?

    asked by Mikey on October 1, 2008
  8. chemistry

    100 mL of is initially at room temperature (22)C. A chilled steel rod at 2 C is placed in the water. If the final temperature of the system is 21.2 C, what is the mass of the steel bar? Specific heat of water = 4.18J/g(C) Specific heat of steel =

    asked by Lilit on October 20, 2008
  9. Chemistry

    If a hydrate of the formula MCl * xH2O decomposes when heated to produce HCL, what change would you expect to occur when a piece of litmus paper is held in the path of the vapor released?

    asked by Chloe on October 14, 2008
  10. Chemistry

    A. The forensic technician at a crime scene has just prepared a luminol stock solution by adding 13.0 g of luminol into a total volume of 75.0 mL of H2O. -What is the molarity of the stock solution of luminol? B. Before investigating the scene, the

    asked by Irvin on October 12, 2008
  11. Economics: Price Elasticity

    Please check my answers whether they are correct or not. If not, please help me why they are wrong. Thank you. Question 1: Point: A (300, 1000) Point B: (200, 1200) According to the midpoint method, the price elasticity of demand for hot dogs between point

    asked by Anonymous on October 2, 2008
  12. physics

    a 200kg sailboat experiences an eastward force of 3000N by the ocean tide and a wind force against its sails with magnitude of 6000N directed toward the northwest (45 degrees north of west). what is the magnitude of the resultant acceleration?

    asked by Steph on October 23, 2008
  13. Math

    Kelly subtracted 2.3 from 20 and got 17.7. Explain why this is reasonable.

    asked by Jordan on October 19, 2008
  14. physics

    Find the vector components along the directions noted in parentheses. a. a car displaced 45degrees north of east by 10.0 km (north east) b. a duck accelerating away from a hunter at 2.0meter per second squared at an angle of 35degrees to the ground

    asked by i love polka on October 4, 2008
  15. novel help

    Hello, I need to write a short review on the novel Girl Interrupted while I have read the book twice I can't find how the disorder that Susanna Kaysen has affected her family members, does it say in the book, also I need to put what treatment she received

    asked by chris on October 12, 2008
  16. Reading/Abnormal psychology

    Hello, I am reading the book Girl Interrupted and have to write a review on it, I know that the main person in the book had borderline personality, but I need to find how the treatment an or disorder affected the family, and I can't find the answer to that

    asked by Ashley on October 1, 2008
  17. Random

    Does anyone know anything about first cash advance?

    asked by Anonymous on October 30, 2008
  18. english

    asking help for a reading report

    asked by jeian on October 3, 2008
  19. Science

    What are 2 substances that are useful because of their viscosity?

    asked by Cyleste on October 9, 2008
  20. AP Chem

    I know this might sound easy... but i need these problems for bonus and i want to make sure they are right Silver nitrate reacts with strontium chloride in an aqueous precipitation reaction. What are the formulas of silver nitrate and strontium chloride?

    asked by Anna-Marie on October 27, 2008
  21. Chemistry

    After 0.6523 g of CoCl2*6H2O is heated, the residue has a mass of 0.3423 g. Calculate the % H20 in the hydrate. What is the formula of the hydrate? -I understand how to get the % H2O in the experiment but how do you determine the formula?

    asked by Deana on October 12, 2008
  22. chemistry

    A sample of neon effuses from a container in 73 seconds. The same amount of an unknown noble gas requires 149 seconds. Identify the gas.

    asked by nikki on October 16, 2008
  23. math

    what are the similarities and differences between an arithmetic sequence and a linear equation? ok i know that arithmetic sequence is a sequence of real numbers for which each term is the previous term plus a constant (called the common difference). For

    asked by Claudia on October 19, 2008
  24. chemistry

    A gaseous mixture of O2 and N2 contains 34.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 465 mmHg?

    asked by Anonymous on October 13, 2008
  25. Calculus

    A rectangular swimming pool is to be built with an area of 1800 square feet. The owner wants 5-foot wide decks along either side and 10-foot wide decks at the two ends. Find the dimensions of the smallest piece of property on which the pool can be built

    asked by George on October 25, 2008
  26. DrBobb222 : Chemistry HElp...Please Check

    Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately “weighing by difference” about 0.1 g of KIO3 and placing it in your 100 mL volumetric flask. Fill the flask to mark with distilled water.

    asked by Sara on October 21, 2008
  27. Chemistry

    Choose the true statements regarding the charge-minimized Lewis structure(s) of the BrO2- ion. (selet all that apply) a. There is only one charge-minimized structure for this ion. b. There are two charge-minimized resonance structures for this ion. c. The

    asked by Lindsay on October 5, 2008
  28. Chemistry

    A student performs a crystallization on an impure sample of biphenyl. The sample weighs 0.5 g and contains about 5% impurity. Based on his knowledge of solubility the student decides to use benzene as the solvent. After crystallization, the crystals are

    asked by Nina on October 8, 2008
  29. physics

    Two concurrent forces have a maximum resultant of 45 newtons and a minimum of 5.0 newtons. What is the magnitude of each of these forces?

    asked by Stephanie on October 15, 2008
  30. Math 117

    A class has 10 boys and 12 girls. In how many ways can a committee of four be selected if the committee can have at most two girls?

    asked by Stephen on October 3, 2008
  31. college physics help please...

    The location of the center of mass of the partially eaten, 11 inch diameter pizza (r = 5.5) shown in Figure 9-20 is Xcm = -1.1 in. and Ycm = -1.1 in. Assuming each quadrant of the pizza to be the same, find the center of mass of the uneaten pizza above the

    asked by sally on October 19, 2008
  32. chemistry

    consider a crystallization of sulfanilamide in which 10 mL of hot 95% ethyl alcohol is added to 0.10 g of impure sulfanimide. after the solid has dissolved, the solution is cooled to room temp. and then placed into an ice-water bath. no crystals for, even

    asked by BOB on October 7, 2008
  33. o-chem

    explain how the rate of crystal growth can affect the purity of a recrystallized compound

    asked by David on October 7, 2008
  34. physics

    A wheel of radius 0.5 m rotates with a constant angular speed about an axis perpendicular to its center. A point on the wheel that is 0.2 m from the center has a tangential speed of 2 m/s. (a) Determine the tangential speed of a point 0.4 m from the center

    asked by Sandhya on October 30, 2008
  35. Physics

    Hi guys, would appreciate some help with this problem: When a light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.80 mi/h·s. In the next bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant

    asked by Amelia on October 9, 2008
  36. physics

    The sun rotates around the center of the milky way galaxy at a distance of about 30,000 light years (1ly= 9.5*10^15m). if it takes about 200 million years to make one rotation, estimate the mass of our galaxy. Assume that the mass distribution of galaxy is

    asked by jason on October 25, 2008
  37. Science 8 grade

    A little aluminum boat (mass of 14.50g) has a volume of 450.00cm3. The boat is placed in a small pool of water and carefully filled with pennies. If each penny has a mass of 2.50g, how many pennies can be added to the boat before it sinks?

    asked by Thao on October 16, 2008
  38. 9th grade

    why did miss muffet need a road map

    asked by nicole on October 8, 2008
  39. chemistry

    Please help with this problem =) The combustion of liquid chloroethylene, C2H3Cl, yields carbon dioxide, steam, and hydrogen chloride gas. I. write a balanced equation for the reaction (I sorta get this part) II. How many moles of oxygen are required to

    asked by Jack on October 9, 2008
  40. physics

    a roller coaster moves 85m horizonally, then travels 45m at an angle of 30 degrees above the horizontal. what is its displacement from its starting point?

    asked by sara on October 29, 2008
  41. Physics

    Adolf and Ed are wearing harnesses and are hanging from the ceiling by means of ropes attached to them. They are face to face and push off against one another. Adolf has a mass of 127 kg, and Ed has a mass of 65 kg. Following the push, Adolf swings upward

    asked by Z on October 29, 2008
  42. Physics

    A 54 kg box is being pushed a distance of 7.0 m across the floor by a force P whose magnitude is 153 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.25. Determine the work done on the box by each of the

    asked by Brandon on October 13, 2008
  43. Calculus

    The hypotenuse of a right triangle has one end at the origin and one end on the curve y=x^(7)e^(-7x) , with x greater than or equal to 0. One of the other two sides is on the x-axis, the other side is parallel to the y-axis. Find the maximum area of such a

    asked by George on October 21, 2008
  44. AP CHEM

    How many electrons in an atom can have the following designations? 5px 2s n = 4 5p 7py 4f how do u do these?

    asked by Giznelbell on October 21, 2008
  45. MATH

    USE COUNTERS TELL HOW TO MAKE 10 WHEN ADDING 8 + 5.

    asked by TONYA on October 10, 2008
  46. chem

    How much energy, in joules, must be absorbed to convert to Na all the atoms present in 1.00mg of gaseous Na? The first ionization energy of Na is 495.8kj/mol .

    asked by tomi on October 26, 2008
  47. Latin

    I saw the Tiber RIVER flowing through Rome. flumen fluminibus flumina fluminum Question 2 I love the POEMS of Vergil! carmen carmine carmina carminum Question 3 In his statue of Anchises, Aeneas, and Ascanius, Bernini did a beautiful job of depicting the

    asked by Sarah on October 15, 2008
  48. Statistics

    John has six bills of paper money in the following denominations $1, $5, $10, $20, $50, and $100. If he selects 3 bills at a time what is the probability of selecting a group that has an average value of at least $26?

    asked by JMN on October 16, 2008
  49. Chemistry complex ions

    Al and Zn both form hydroxides when reacted with an NH3 sloution and NaOH solution The hydroxides are both amphoteric When you add excess NH3 the Zn ppt dissolves, but Aluminium stays When you add excess NaOH both ppts dissolve why doesn't the aluminum ppt

    asked by Marysia on October 29, 2008
  50. Science

    What kind of energy do you experience when you eat a peanut butter and jelly sandwich?

    asked by Nell on October 22, 2008
  51. physics

    An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive x direction and has a positive magnitude of 6.7N; a second force has a magnitude of 4.6 N and points in the negative y direction. (1)"Find

    asked by john on October 24, 2008
  52. Chemistry

    is KAl(SO4)2 12H2O hygroscopic, deliquescent, or efflorescent?

    asked by ben on October 30, 2008
  53. 10th Maths ch-polynomials

    Obtain all zeros of f(x)= x3 + 13x2 + 32x + 20, if one of it's zero is -2

    asked by Akash on October 15, 2008
  54. chemistry

    Hydrogen gas (a potential future fuel) can be formed by the reaction of methane with water according to the following equation: CH4(g)+H2O(g) = CO(g) + 3H2(g) In a particular reaction, 26.5 L of methane gas (measured at a pressure of 736 torr and a

    asked by Lili on October 13, 2008
  55. chemistry

    Enormous numbers of microwave photons are needed to warm macroscopic samples of matter. A portion of soup containing 177 g of water is heated in a microwave oven from 20degrees Celsius to 98 degrees Celsius, with readiation of wavelength 1.55x10^-2m. How

    asked by kelsie on October 13, 2008
  56. chemistry

    For the reaction shown below complete the following calculations. H2(g) + C2H4(g) --> C2H6(g) (a) Estimate the enthalpy of reaction using the bond energy values in Table 9.4. (b) Calculate the enthalpy of reaction, using standard enthalpies of formation.

    asked by hannah on October 27, 2008
  57. chemistry

    what is the height length and width of a jolly rancher in centimeters?

    asked by Anonymous on October 1, 2008
  58. math

    what is the answer to whaat kind of shoes does a frog wear? on page 165 on algebra with pizzazz

    asked by ashlee on October 20, 2008
  59. physics

    A 20kg traffic light hangs midway on a cable between two poles 40meters apart. If the sag in the cable is .4 meters, what is the tension in each side of the cable?

    asked by Elaine on October 19, 2008
  60. help wit my analysis

    In “What is poverty” Jo Goodwin Parker uses an expository essay to define the realities that she faces. She believes poverty can’t be described by the lack of food, clothing, shelter, housing or water. Nor does she think it’s a statistical measure.

    asked by ben on October 22, 2008
  61. chem

    A 25.0 g aluminum block is warmed to 65.2 C and plunged into an insulated beaker containing 55.3g of water initially at 22.0C. the aluminum and water are allowed to come to thermal equilibrium. Assuming that no heat is lost, what is the final temperature

    asked by natash on October 17, 2008
  62. physics

    A rocket is used to place a synchronous satellite in orbit about the earth. What is the speed of the satellite in orbit?

    asked by NJ on October 1, 2008
  63. physics

    tad drops a cherry pit out the car window 1 m above the ground while traveling down the road at 18 m/s. a.how far, horizontally, from the initial dropping point will the pit hit the ground? b. if the car continues to travel at the same speed, where will

    asked by Bailey on October 26, 2008
  64. physics

    A man weighs 75 kg. What is his weight on the moon, where g=2.21 m/s2

    asked by Vishnu on October 10, 2008
  65. chem

    The Rf value of compound A is .34 when the TLC plate is developed in hexane and .44 when the plate is developed in diethyl ether. Compound B has an Rf value of .42 in hexane and .60 in diethyl ether. Which solvent would be better for seperating a mixture

    asked by Jason on October 21, 2008
  66. Accounting

    Harding Company is in the process of purchasing several large pieces of equipment from Danning Machine Corporation. Several financing alternatives have been offered by Danning: 1. Pay $950,000 in cash immediately. 2. Pay $420,000 immediately and the

    asked by Eyob on October 23, 2008
  67. algebra

    what should you not do if you want to help get rid of graffiti

    asked by charles on October 26, 2008
  68. chem

    should atmospheric pressure increase or decrease as one goes from the beach to the mountains? why?

    asked by Tabby on October 21, 2008
  69. Statistics

    The percentage of adults who have been told at some point that they have hyptertension is 23.53%. If 10 adults are randomly selected, what is the probability that at least 8 have been told that they have hypertension?

    asked by Raj on October 9, 2008
  70. Science

    1. Which statement about subatomic particles is NOT true? (1 point) Protons and neutrons have almost the same mass. Protons and electrons have opposite charges. Unlike protons and electrons, neutrons have no charge. Protons and neutrons have the same

    asked by Chelsea on October 10, 2008
  71. Chemisty

    LEAD IS A SOFT, DENSE METAL WITH A SPECIFIC HEAT OF 0.028KCAL/KGC, A MELTING POINT OF 328.0C, AND A HEAT FUSION OF5.5KCAL/KG. HOW MUCH HEAT MUST BE PROVIDED TO MELT A 250.0KG SAMPLE OF LEAD WITH A TEMPERATURE OF 20.0C?

    asked by Jessica on October 23, 2008
  72. chemistry

    Phosgene (COCl2) is an extremely poisonous gas that was used extensively in World War I as a chemical warfare agent. At 300oC, phosgene decomposes to carbon monoxide and chlorine with a Kp = 6.8 x 10-2. Calculate the pressure in the vessel at equilibrium

    asked by Samuel on October 13, 2008
  73. chemistry

    In the following experiment, a coffee-cup calorimeter containing 100ml of H2O is used. The initial temperature of the calorimeter is 23 degrees celcius. If 7.20g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in

    asked by kayla on October 3, 2008
  74. chemistry

    A weather balloon is inflated to a volume of 27.0 at a pressure of 730 and a temperature of 31.3. The balloon rises in the atmosphere to an altitude, where the pressure is 365 and the temperature is -14.6. Assuming the balloon can freely expand, calculate

    asked by Lili on October 12, 2008
  75. chem

    Calculate the standard enthalpy change for the reaction 2A+B->2C+D Use the following data: Substance A=-257kj/mol B=-413kj/mol C=189kj/mol D=-475kj/mol For the reaction given , how much heat is absorbed when 3.00mol of A react?

    asked by tomi on October 8, 2008
  76. physics

    how much is the energy stored in hooke's law spring increased when its stretch is increased from 8 cm to 16 cm? why is it 300%?

    asked by mc on October 29, 2008
  77. GEO

    1)Lisbon is to Portugal as _____________ is to Cameroon. 2)Hispaniola and Barbados are islands in this body of water. ..... I need a lot of help with ^. To me these don't make any sense at all. Thanks for all your help.........

    asked by Elenny on October 22, 2008
  78. Microeconomics; price elasticity of demand

    Please check and correct my answers? Thank you. QUESTIONS: 1. The time horizon of the demand curve is one determinant of the price elasticity of demand. Compared to the short-run demand for oil, the demand for oil in the long run will tend to be _____

    asked by Anonymous on October 3, 2008
  79. physics

    In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. The cylinder begins to rotate about a vertical axis. Then the floor on which the passengers are standing

    asked by Matt on October 23, 2008
  80. Math pizzaz pre algraba

    What magic tricj dies Mr.Utterbunk perform ever evening

    asked by kate on October 25, 2008
  81. chem

    a crude non acidic product mixture dissolved in diethyl ether contains acetic acid. describe an extraction procedure that could be used to remove the acetic acid.

    asked by Jason on October 28, 2008
  82. physics help!!

    a plane moving horizontally at 120 m/s drops a package from an elevation of 240 m. How far did the package go before it hit the ground? Step by step directions please!

    asked by Hayden on October 20, 2008
  83. Physics

    A v vs t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t=5s the acceleration of the ball is zero. We know that at t=5s, a) the curve is not crossing the time axis b) the velocity of the ball is not changing c) the

    asked by Ron on October 13, 2008
  84. chemistry

    name the elementwhich has the following numbers of particles: a.26 electrons,29 neutrons,26 protons b.53 protons,74neutrons c.2electrons(neutral atom) d.20 protons e.86electrons,125neutrons,82protons(charged atom) f.0 neutrons

    asked by jennifer on October 7, 2008
  85. physics

    The mass of the Earth is 5.98x10^24 kg, and the mass of the Moon is 7.36x 10^22 kg. The distance of separation, measured between their centers, is 3.84x10^8 m. Locate the center of mass of the Earth-Moon system as measured from the center of the Earth. I

    asked by tom on October 3, 2008
  86. English

    IS A FISH CONSIDER A PERSON, A PLACE, OR A THING?

    asked by SHEMAR on October 15, 2008
  87. chem

    The complete combustion of butane, (g) is represented by the equation C4H10+13/2O2->4CO2+5H20 STANDARD ENTHALPY IS -2877KJ/MOL How much heat, in kilojoules, is evolved in the complete combustion of 12.8L C4H10 at 23.8degrees celsius and 744mmhg ?

    asked by tomi on October 8, 2008
  88. half-life of radioisotope

    A radioisotope has a half-life of 4 days. How much of a 20-gram sample of this radioisotope remains at the end of each time period? 1) 4 days 2) 8 days

    asked by Stephanie on October 31, 2008
  89. English

    Which of the following statements is true of a summary? 1. A summary condenses the main points of an article. 2. A summary is quicker and easier to write than a longer original article. 3. A summary should not include evaluation and criticism. 4. A summary

    asked by Lin on October 21, 2008
  90. accounting

    Kiddy Toy Corporation needs to acquire the use of a machine to be used in its manufacturing process. The machine needed is manufactured by Lollie Corp. The machine can be used for 10 years and then sold for $11,000 at the end of its useful life. Lollie has

    asked by ryan on October 25, 2008
  91. chem

    why does the addition of a salt (like sodium chloride) to the aqueous layer sometimes help break up an emulsion that forms in an extraction? - sorry about that last post

    asked by Jason on October 21, 2008
  92. Physics

    A car with a mass of 950 kg and an initial speed of v1 = 21.5 m/s approaches an intersection, as shown in the figure. A 1300 kg minivan traveling northward is heading for the same intersection. The car and minivan collide and stick together. If the

    asked by Will on October 19, 2008
  93. math

    what is a boldface digit and how do you find its value

    asked by annie on October 30, 2008
  94. chem

    what precautions should be observed when an aqueous sodium carbonate solution is used to extract an organic solution containing traces of acid? is it that aqueous sodium carbonate is extremely combustible, which can't be exposed to an open flame?

    asked by Jason on October 28, 2008
  95. Chemistry I

    An unknown volume of water at 18.2 degrees celsius is added to 24.4 mL of water at 35.0 degrees celsius. If the final temperature is 23.5 degrees celsius what was the unknown volume? (assume no heat is lost to surroundings and D of water is 1.00g/mL)

    asked by Kelsie on October 12, 2008
  96. physics

    Satellite A orbits a planet with a speed of 10,000 m/s. Satellite B is twice as massive as satellite A and orbits at twice the distance from the center of the planet. What is Satellite B's speed?

    asked by Jennifer on October 2, 2008
  97. college Chemistry

    An adult takes about 15 breaths per minute, with each breath having a volume of 500mL. if the air that is inhaled is "dry", but he exhaled air is 1 atm pressure is saturated with water vapor at 37 degree C(body temp), what mass of water is lost from the

    asked by CM on October 19, 2008
  98. math

    Suppose that ln2 = a and ln3 = b. Use properties of logarithms to write this logarithm in terms of a and b. ln8

    asked by Kristina on October 25, 2008
  99. chemistry

    A sample of N2O effuses from a container in 45 seconds. How long would it take the same amount of gaseous I2 to effuse from the same container under identical conditions?

    asked by nicole on October 16, 2008
  100. social important......help

    why did alexander poured out drinking water offered to him in the desert? what was his goals and what did he get in result?

    asked by Anonymous on October 19, 2008