Questions Asked on
November 17, 2012

  1. Ms.Sue Please!! Math

    There are 1,296 in.^2 in one square yard. Use a proportion to find out how many square yards of carpet it would take to cover the floor. I got 36 but I do not believe this is correct, for it is not a choice. Help, Im confused! The choices given are: 28 yd2

    asked by Limmmy
  2. Chemistry

    A 0.08425 g sample of gas occupies 10.0-mL at 292.5 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound? Identify the geometry around each carbon atom. a)trigonal

    asked by Nikki
  3. Physics

    Joe wishes to hang a sign weighing 730 N so that cable A, attached to the store, makes a 30.0° angle, as shown below. Cable B is horizontal and attached to an adjoining building. What is the tension in cable B?

    asked by Jacob
  4. Chemistry

    Given the following reaction at equilibrium, if Kc = 1.90 x 1019 at 25.0 °C, Kp = __________. H2 (g) + Br2 (g) ↔ 2 HBr (g)

    asked by Josh G.
  5. chemistry

    Use standard enthalpies of formation to calculate ΔHrxn° for each reaction. (See the appendix. Enter your answer to the tenth place.) (a) 2 H2S(g) + 3 O2(g) 2 H2O(l) + 2 SO2(g) (b) N2O4(g) + 4 H2(g) N2(g) + 4 H2O(g) (c) SO2(g) + 1/2 O2(g) SO3(g) These

    asked by DeeDee
  6. Chemistry

    Calculate the percent ionization of nitrous acid in a solution that is 0.311 M in nitrous acid (HNO2) and 0.189 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 × 10-4.

    asked by Josh G.
  7. Physics

    A street lamp weighs 150 N. It is supported by two wires that form an angle of 100° with each other. The tensions in the wires are equal. (a) What is the tension in each wire supporting the street lamp? (b) If the angle between the wires supporting the

    asked by Lyna
  8. Physics

    An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.91 m/s, and its maximum acceleration is 6.20 m/s2. How much time elapses betwen an instant when the object's speed is

    asked by carol
  9. Chemistry

    Calculate the pH of a solution at 25.0 °C that contains 1.94 × 10-10 M hydronium ions.

    asked by JOHN
  10. Please Help! Quadratic Eqautions

    The population of a town P(t)is modelled by the function P(t)=6t+110t+3000, where t is time in years. Note t=0 represents the years 2000.

    asked by Nina
  11. physics

    A 80kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the .43kg ball at the peak of his jump, when he is 17.2 inches off the ground. He hits the ground 1.61 inches away from where he leapt. If the

    asked by Ashley
  12. Calculus [Implicit Differentiation]

    If √x+√y=10 and y(16)=36, find y'(16) by implicit differentiation. If somebody could please help me by explaining how to solve this problem ! Thank you (:

    asked by Ali
  13. Physics

    A thin, uniform rod is hinged at its midpoint. To begin with, one half of the rod is bent upward and is perpendicular to the other half. This bent object is rotating at an angular velocity of 6.8 rad/s about an axis that is perpendicular to the left end of

    asked by greg
  14. Stats

    Suppose X is a uniform random variable with C = 20 and d = 90. Find the probability that a randomly selected observation is between 23 and 85.

    asked by Marie
  15. Physics 1

    The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. If nonconservative forces, such as kinetic friction and air resistance, are negligible, what would be the height h of the highest point reached by the

    asked by Donald
  16. Physics

    How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by the ice?

    asked by R
  17. physics

    An object is attached to the lower end of a 100-coil spring that is hanging from the ceiling. The spring stretches by 0.210 m. The spring is then cut into two identical springs of 50 coils each. As the drawing shows, each spring is attached between the

    asked by jim
  18. Math

    The diagram shows a solid metal cylinder. The cylinder has base radius 2x and height 9x. E cylinder is melted down and made into a sphere of radius r. Find the expression for r in terms of x.

    asked by Eleanor
  19. Physics

    How far apart must two protons be if the magnitude of the electrostatic force acting on either one due to the other is equal to the magnitude of the gravitaional force on a proton at the earth's surface?

    asked by Guy
  20. Math Ms.Sue Please!!

    Harriet needs to ship a small vase. The box she will use has a volume of 216 cubic inches. If the side lengths are all the same, what is the length of each side of the box? I got 6 inches. Im not sure how i even got this answer...is it right?

    asked by Lisa John
  21. physics

    The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 5.34 m3. What is the weight of the heaviest bear that the ice can support without sinking completely

    asked by Anonymous
  22. pre- algebra 1

    Jose has 9 more comic books than Robin.Robin has 5 more comic books than Lee. If jose has 23 comic books,how many comic books dose Robin have? How many comic books dose Lee have?

    asked by Shay
  23. College Math

    Suppose the supply and demand for a certain videotape are given by: Supply: p=1/3q^2 Demand: p=-1/3q^2+48

    asked by Latoya
  24. CHEMISTRY

    Consider a 58.4 g sample of H2O(g) at 125°C. What phase or phases are present when -162 kJ of energy is removed from this sample? Specific heat capacities: ice, 2.1 J g-1 °C-1; liquid, 4.2 J g-1 °C-1; steam, 2.0 J g-1 °C-1, ΔHvap = 40.7 kJ/mol, ΔHfus

    asked by Sarah
  25. Finance

    Community Hospital has annual net patient revenues of $150 million. At the present time, payments received by the hospital are not deposited for six days on average. The hospital is exploring a lockbox arrangement that promises to cut the six days to one

    asked by Rebekah
  26. Please Help! Quadratic Eqautions

    The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?

    asked by Nina
  27. Math

    A vertical tower is supported by guy wires anchored at a point on the ground. The longer wire is attached to the top of the tower and makes an angle of 53 with the ground. The shorter wire makes an angle of 21 with the ground. The shorter wire is 80 ft.

    asked by Melia
  28. college math

    A lawn mower handle makes an angle of 60° with the ground. A woman pushes on the handle with a force of 30 pounds. How much work is done in moving the lawn mower a distance of 75 feet on level ground?

    asked by lily
  29. Chemistry Help

    At room temperature, the surface tension of water is 72.0 mJ·m^–2. What is the energy required to change a spherical drop of water with a diameter of 1.80 mm to three smaller spherical drops of equal size? The surface area of a sphere of radius r is

    asked by Anonymous
  30. Physics

    A circular disk of radius 30 cm is rotating with an angular velocity of 2 radians / s. What is the tangential velocity of a point on the rim of the disk? What is its centripetal acceleration?

    asked by Mark
  31. Physics

    Vectors A and B are in the xy plane and their scalar product is 20.6 units.? If A makes a 27.8 angle with the x axis and has magnitude A= 14.8 units, and B has magnitude B= 29.0 units, what can you say about the direction of B?

    asked by Emma
  32. pre-algebra

    atoms contain charged particles called protons and electrons. each proton has a charge of +1, and each electron has a charge of -1. A sulfur ion has 16 protons and 18 electrons. find the net charge. Thank-You

    asked by Shay
  33. math

    in the auditorium there are 24 rows of seats. the first second rows have 8 chairs and the third and fourth rows have 10 chairs.if this pattern continues.how many chairs are in the auditorium?

    asked by shane
  34. Physics

    A 225-kg crate is pushed horizontally with a force of 690 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

    asked by Caleb
  35. statistics

    Suppose x is a uniform random variable with c=10 and d=70. Find the probability that a randomly selected observation is between 13 and 65. a. 0.133 b. 0.867 c. 0.8 d. 0.5

    asked by Deane
  36. Physics

    A 1.60 102-kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.200. What should be the magnitude of , so that the net work done by it and the kinetic

    asked by Anonymous
  37. physics ap

    Sir Lost-a-Lot dons his armor and bursts out of the castle on his trusty steed Tripper in his quest to rescue fair damsels from drag- ons. Unfortunately his valiant aide Doubtless lowered the drawbridge too far and finally stopped it 30 below the

    asked by helpplz
  38. Physics

    In Larry Niven’s science fiction novel Ringworld, a ring of material of radius 1.54 × 1011 m rotates about a star with a ro- tational speed of 1.38 × 106 m/s. The inhab- itants of this ring world experience a normal contact force ~n. Acting alone, this

    asked by helpplz
  39. Ms. Sue can you answer this please

    Damon had answer, but i just want to see if you'll explain it differently... The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?

    asked by Nina
  40. Math

    The price of a small cabin is $40,000. The bank requires a 5% down payment. The buyer is offered two mortgage options: 20-year fixed at 8.5% or 30-year fixed at 8.5 %. Calculate the amount of interest paid for each option. How much does the buyer save in

    asked by kaitlyn Blackmon
  41. Maths

    3. Ohm’s law states that the current flowing in a circuit varies directly as the applied voltage and inversely as the resistance. In an experiment, the resistance was increased by triple the percentage by which the voltage was increased. A student

    asked by David
  42. chemistry

    For the emission spectrum of Be3+, calculate the lowest wavenumber νˉ (in inverse meters) of light produced by electron transitions between n=2, n=3, and n=4.

    asked by Anonymous
  43. pre-algebra

    Use algebra tiles to find the difference. Let one white tile equal +1and one black tile equal -1.6-(-9) Thanks

    asked by Shay
  44. ap physics b

    A uniform ladder 8.09 m long and weighing 201.0 N rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.600, and the ladder makes a 46.0 angle with the ground. How far up the ladder can an 834.0N person

    asked by helpplz
  45. chemistry

    How many grams of solute are required to prepare 500ml of 0.5M urea solution,CO(NH2)2?

    asked by miah
  46. chemistry

    Calculate the molarity of 38.5 mL of 1.80 M HNO3 diluted to 0.130 L with water

    asked by Linda
  47. chemistry

    the temperature of 50.0g of water changes from 28.5°C to 26.9°C when 1.00g of ammonium bromide, NH4br(s), dissolves. What is the molar enthalpy of solution for this compound?

    asked by Anonymous
  48. pre- algebra 1

    Solve the inequality. 42

    asked by Shay
  49. Physics

    A 57.5-kg skateboarder starts out with a speed of 1.80 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The

    asked by Anonymous
  50. science (physics) IV

    anton plan that he can throw at a dart board from a distance of 2 meters and hit the 5 centimeters wide bull's eye if he throw the dart horizontally with a speed of 20 meters per second. he start the throw at the height as the top of bull's eye ,will anton

    asked by michaelangelo
  51. Physics

    A 225-kg crate is pushed horizontally with a force of 690 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

    asked by Danny
  52. health help me

    1. Starches and sugars that provide energy (1 point)kidneys enzymes carbohydrates vitamins 2. The system that removes waste from the body and controls the body's water levels (1 point)excretory digestive system liver kidneys 3. Organs that remove waste

    asked by poppy
  53. math

    a tank is made in the shape of a rectangular prism, measuring 12 cm by 16 cm by 10 cm.It is full of water.A small rectangular prism measuring 2 cm by 3 cm by 4 cm is dropped into the full tank. What is the amout of water which overflows?

    asked by charlie
  54. math

    what number is 100 times less than 600

    asked by charlie
  55. physics

    Two radar stations A and B, are separated by horizontal distance of (a=500 metres), they both track the position of a plane C by recording angles (alpha), and (beta) at 1 second intervals. time (sec) 9 10 11 the angle A(alpha) 54.80 54.06 53.34 the angle B

    asked by ryan
  56. chemistry

    For the emission spectrum of Be3+, calculate the lowest wavenumber νˉ (in inverse meters) of light produced by electron transitions between n=2, n=3, and n=4.

    asked by amar chauhan
  57. Pre- Algebra 1

    Graph the solutions of the inequality on a number line. c

    asked by Shay
  58. Chemestry

    If 0.25 mol of methane gas (CH4) is introduced into evacuated 2.00 L container at 35 Degrees Celcius , what is the pressure in the container ?

    asked by Diana
  59. Math

    So the question is basically asking which mountains peaks can be seen from Oahu. Island Distance(Mi) Mountain Height(ft) Lanai - 65 - Lanaihale - 3,370 Maui - 110 - Haleakala - 10,023 Hawaii - 190 - Mauna Kea - 13,796 Molokai - 40 - Kamakou - 4,961 A)

    asked by Jessica
  60. math work

    a dress orginally sold for $120 is now being sold for $96. by what percent was the prginal price of the dress discounted? please show work.

    asked by ellis
  61. Chemistry

    A 35.0-g iron rod, initially at 25.6°C, is submerged into an unknown mass of water at 67.7°C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 63.5°C. What is the mass of the water?

    asked by Matt
  62. calculus word problem

    A company has a Cobb-Douglas production function f(x,y)= 20x^0.33y0.67 where x is the utilization of labor and y is the utilization of capital. Determine the number of units of product produced when 1728 units of labor and 27,000 units of capital are used.

    asked by dino
  63. Physics

    Suppose a 47-N sled is resting on packed snow. The coefficient of kinetic friction is 0.14. If a person weighing 670 N sits on the sled, what force is needed to pull the sled across the snow at constant speed?

    asked by Andrew
  64. Physics

    You are driving a 2570.0-kg car at a constant speed of 14.0 m/s along a wet, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. The car's wheels lock, the tires begin skidding, and the car slides

    asked by Caleb
  65. math

    If two dice are rolled one time, find the probability of getting a sum less than 5.

    asked by ed
  66. Chemestry

    If 0.25 mol of methane gas (CH4) is introduced into evacuated 2.00 L container at 35 Degrees Celcius , what is the pressure in the container ?

    asked by Diana
  67. physical science

    a track and field athlete is running forward with a javelin at a velocity of 4.2 m/s. If he throws the javelin at a velocity relative to him of 10.3 m/s,then what is the velocity of the javelin relative to the ground? please help quick!! thanks :)

    asked by Taylor
  68. math

    A mother wnats to invest $6,000 for her son's future education. She invests a portion of the money in a bank certificate of deposit which earns 4% and the remaainder is a savings bond that earns 7%. If the total interest earned after one year is $360.00,

    asked by Mark
  69. chemistry

    What volume will a mixture of 5.00mol of He and 0.800 mol of CO2 occupy at STP?

    asked by toya
  70. Physics 1

    A shot-putter puts a shot (weight = 71.3 N) that leaves his hand at distance of 1.62 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.08 m above the ground. Include the correct sign for work. J

    asked by Anonymous
  71. Chemistry

    Estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole. Do not refer to the periodic table to solve this problem. The following data may be useful in your calculation:

    asked by Basim
  72. Physics

    An crate weighing 510 N is resting on a plane inclined 30° above the horizontal. (a) Calculate the magnitude of the acceleration (ignore friction). m/s2 (b) After 3.00 s, how fast will the crate be moving?

    asked by yoyoma
  73. Algerbra 2

    find the possible roots for: 3x^3-6x^2+11x-6=0

    asked by Jessica
  74. Physics

    You are driving a 2570.0-kg car at a constant speed of 14.0 m/s along a wet, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. The car's wheels lock, the tires begin skidding, and the car slides

    asked by Caleb
  75. Physics (maybe it's just math)

    A sphere of copper is subjected to 89.7 MPa of pressure. The bulk modulus is 130 GPa. a) By what fraction does the volume of the sphere change? b) By what fraction does the radius of the sphere change? for a) I have dV/V = 0.00069 - this is correct. for b)

    asked by Brenda
  76. Using windows

    When saving a document or drawing, you determine the destination folder in which the file will be save by A. Making a selection in the save: box. B.Choosing a folder from the destination drop-down menu. C.Typing the folder name in the filename: box.

    asked by bambi
  77. 8 grade

    A farmer is planting a crop straight line with three feet of distance between each plant. If planted 23, what is the distance between the first and the last crop?

    asked by Anonymous
  78. Physics

    A force of 44.0 N accelerates a 5.0-kg block at 6.3 m/s2 along a horizontal surface. (a) How large is the frictional force? (b) What is the coefficient of friction?

    asked by Jeff
  79. Physics

    You need to move a 129-kg sofa to a different location in the room. It takes a force of 90 N to start it moving. What is the coefficient of static friction between the sofa and the carpet?

    asked by Liam
  80. Physics

    You are driving a 2570.0-kg car at a constant speed of 14.0 m/s along a wet, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. The car's wheels lock, the tires begin skidding, and the car slides

    asked by Caleb
  81. engineering

    a bolt located 50mm from the center of an auto wheel is tightened by the couple shown for .10 seconds. determine the resulting angular velocity of the wheel if the wheel has a radius of gyration of 250 mm and a mass of 19 kilograms

    asked by george
  82. Physics

    The period of oscillation of a spring-and-mass system is 0.60 s and the amplitude is 4.1 cm. What is the magnitude of the acceleration at the point of maximum extension of the spring? I have too many unknowns to use the equation for frequency, period,

    asked by Brenda
  83. math

    A bus stopped at Gulgong, 25% of the passengers got off the bus and 3 new passengers got on. At the next stop,3 quarter of the passengers got off the bus and 11 new passengers got on. The bus then had 17 passengers.How many passengers did the bus have just

    asked by charlie
  84. Brenau University

    To: From: Date: Subject: Observation Methodology: A. Description of internal control: (What did you observe?) B. Objective of internal control: (Why was the control implemented? There may be more than one reason.) C. Tie to accounting records: (What was

    asked by Paula
  85. science/math

    width of a normal sheet of paper is 8.5inches. Convert this length to kilometers

    asked by natasha
  86. Finance

    Your firm is considering the following three alternative bank loans for $1,000,000: a) 10 percent loan paid at year end with no compensating balance b) 9 percent loan paid at year end with a 20 percent compensating balance c) 6 percent loan that is

    asked by Rebekah
  87. Finance

    An important source of temporary cash is trade credit, which does not actually bring in cash, but instead slows its outflow. Vendors often provide discounts for early payment. What is the formula to determine the effective interest rate if the discount is

    asked by Rebekah
  88. Physics

    A uniform rod of length L and mass m initially at rest is struck by a horizontal force F0 a distance x below the pivot O. The rod is free to rotate about its pivot without friction. If F0 is the average value of the force and Δt is its duration. (a) What

    asked by Jake
  89. physics

    Suppose the coefficient of static friction between the road and the tires on a Formula One car is 0.7 during a Grand Prix auto race. What speed will put the car on the verge of sliding as it rounds a level curve of 39.0 m radius?

    asked by fadsfads
  90. Social studies

    The question I have is about chesapeake bay and massy bisects bay. It is basically to see if demographic and economic changes have moved the Chesapeake bay and Massachusetts bay colonies closer together or further apart?

    asked by Janine
  91. math

    A chemist has 30%, 40 % and 80 % acid solutions. All three were to be mixed to make 4.00 x 102 L of 38% acid solution but a mistake was made and the amounts of 30% and 80 % were reversed. The result was 4.00 X 102 L of 65 % acid solution. What were the

    asked by David
  92. structural engineering

    Fig P9 shows a drawbridge being rasied by a cable EI. The structure is a loaded truss consisting of a pinned assembly of members(links) joined at their ends designed to from a rigid structure. The four joint loadings shown result from the weight of the

    asked by CHAI
  93. math

    Yuki's age is four years more than one-fourth of Xena's age. Xena's age is 21 years and 6 months more than seven-eighths of Yuki's age. How old are Xena and Yuki? Thank you.

    asked by justin
  94. science

    Give the value of the 1st ionization energy of beryllium (Be). Express your answer in Joules (J/atom).

    asked by hi
  95. science

    Titanium (Ti) can be produced by the reaction of metallic sodium (Na) with titanium tetrachloride vapor (TiCl4). The byproduct of this reaction is sodium chloride (NaCl). Calculate the amount of titanium produced (in kg) when a reactor is charged with 61.0

    asked by hi
  96. math

    An open steel tank measures 2m by 2.5m by 3m.It holds 7500 ml of water. What is the volume of steel,in cubic metres,making up the sides of the tank ?

    asked by charlie
  97. math

    Construct a frequency polygon distribution using the class limits shown below. 80, 99, 77, 67, 93, 70, 76, 86, 79, 71

    asked by ed
  98. chemistry

    what are the three pure liquids produced by chemical reactions

    asked by Anonymous
  99. reading help me pls :(

    1. What does the Wool Pooh represent to Kenny? (1 point)a nightmare death bullies fear 3. Which two characters engage in a power struggle in the story? (1 point)Rufus and Larry Dunn Rufus and Cody Byron and Momma Joey and Dad 4. Why is Kenny convinced, at

    asked by HELP ME
  100. Psychology

    the spillover effect is best explained in terms of the?

    asked by Nancy
  101. chemistry

    How many grams of solute are in 2.l L of 3.7Moles of Al(NO3)3

    asked by Anonymous
  102. Math

    14.8cos(27.8)(29cos(x))+14.8sin(27.8)(29sin(x))=22 How do you solve for x?

    asked by Emma
  103. AP World

    I need to find some documents for an e.c. assignment..can u dudes tell me where i can find one? Its gotta be about whether the pilgrimage to America is good or bad..it can be biased and stuff..yeah..i have to actually make a DBQ..not write an essay, but

    asked by Sinthia
  104. math

    How many athletic association membership cards 1 3/8 inches wide can be cut from stock 24 3/4 inches wide?

    asked by Tricia
  105. math

    LPG (liquefied petroleum gas) is stored in highly insulated spherical vessels in most oil refineries. if the inside of one of these tanks is 11.4 ft, find the volume. report your answer to the nearest one-tenth of gal. use pie equal 3.14, and 1 cubic ft

    asked by Anonymous
  106. Algebra

    Length of rectanngle is 1 cm more than width. If length of rectangle is doubled the area is increased by 30cm2. find dimensions of original rectangle.

    asked by Dipti
  107. psychology and the pursuit of happiness

    Write a 700- to 900-word paper explaining the cultural and historical factors that contribute to this perspective. Contrast the traditional American perspective on happiness with the traditional Asian perspective on happiness. Format your paper consistent

    asked by crystal
  108. Algebra 2..

    Solve for x. 2^4x-1/2^3x+2=4

    asked by Anonymous
  109. math

    the width in cm of a rectangle is the same as the slope of the line 5x-6y=-14, and its length in cm is the same as the slope of the line that is perpendicular to the line 9x+4y=87. Find the perimeter of the rectangle.

    asked by daniel
  110. science

    Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=3.591 A˚. What is the maximum wavelength (in meters) of

    asked by hi
  111. intergrated science

    Explain why ionic compounds are formed when a metal from the left side of the periodic table reacts with a nonmetal from the right side. Give two examples of such compounds

    asked by paula
  112. SCIENCE URGENT!!!!

    I had posted these questions before but no one helped me so ill repeat the questions: Please Help Me :) 1. would karyotypes from the same family look similar? Explain. 2. Provide one reason as to why it would be useful to compare karyotypes of family

    asked by Winnie
  113. chemistry

    Titanium (Ti) can be produced by the reaction of metallic sodium (Na) with titanium tetrachloride vapor (TiCl4). The byproduct of this reaction is sodium chloride (NaCl). Calculate the amount of titanium produced (in kg) when a reactor is charged with 61.0

    asked by amar chauhan
  114. chemistry

    Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=5.591 A˚. What is the maximum wavelength (in meters) of

    asked by amar chauhan
  115. Physics

    A 170-N box is placed on an inclined plane that makes a 35.0° angle with the horizontal. Find the component of the weight force parallel to the plane's surface.

    asked by Billy
  116. chemistry

    For the new compound ICl2F+2: Calculate the maximum wavelength of electromagnetic radiation that is capable of breaking the weakest bond. Express your answer in meters. Bond energies (kJ/mol) are: I-I (150) F-F (160) Cl-Cl (240) unanswered

    asked by amar chauhan
  117. Physics

    A 1.31-kg block slides across a rough surface such that it slows down with an acceleration of 1.39 m/s2. What is the coefficient of kinetic friction between the block and the surface?

    asked by Caleb
  118. algebra

    In an assembly line of a factory, which produces networking switching hubs, two robots are utilized. The first one (A) is able to produce 40 microchips per hour, whereas the second one (B) produces 30 microchips per hour. For a total production of 400

    asked by mirna
  119. Biology

    Describe the changes you'll see (evolution wise) if you were granted 1 million years of life.

    asked by Jessi
  120. math

    P=$1000 r=7% t=8 compounded annually

    asked by kim
  121. Math

    A sporting goods store paid $576for a shipment of 8 cartons of tennis balls. There are 12 cans of tennis balls in each carton , with 3 tennis balls in each can. How much did the store pay for each can of tennis balls?

    asked by Anonymous
  122. Math

    A petting zoo has 5 lambs 11 rabbits 4 goats and 4 piglets. Find the ratio of goats to the total number of animals. THen explain its meaning 1/6? 1 goat for every 6 animals

    asked by Jerald
  123. intermediate microeconomics

    why is modelling useful, despite being a simplified version of reality? my answer: answer: an economic model attempts to describe every aspect of reality. a models power stems from the elimination of irrelevant detail which allows the economist to focus on

    asked by jenny
  124. intermediate accounting

    goods in transit, purchased on credit and shipped FOB destination. $10000 . were included in purchases but not in the ending inventory? how would you write this journal entry.( this company uses periodic inventory.

    asked by mary
  125. intermediate accounting

    purchase of a machine for $2000 was expensed. The machine has a four year life , no residual value , and straight line depreciation is used how to write journal entry?

    asked by mary
  126. statistics

    The average amount of time people spend on facebook each day is 71 minutes, with a standard deviation of 4.7 minutes. Are you more likely to select a random person that spends less than 68 minutes per day, or a group of 35 people that spend on average less

    asked by ME
  127. math

    You rent a car for one day. Your total bill is 60 dollars. You estimate your mileage to be about 100 miles does the bill seem reasonable? Explain.Exactly how many miles did you drive?

    asked by ramel
  128. math

    how to work out 3.94/1000

    asked by amisha
  129. Math

    Find the slope of the tangent line to the curve 0x^2−2xy+2y^3=10 at point (-4,1) Help please? Thanks in advance

    asked by Ali
  130. math

    Therese Felser manages a grocery warehouse which encourages volume shopping on the part of its customers. Therese has discovered that, on any given weekday 70 percent of the customer sales amount to more than $ 100. That is any given sale on such a day has

    asked by Andrew
  131. Math

    A ship travels N27°E for 110 mi.How far directly north/south and how far directly east/west is the ship from starting point?

    asked by Jesenya
  132. calculus

    Find a rational function f : R → R with range f(R) = [-1, 1]. (Thus f(x) = P(x) /Q(x) for all x belongs R for suitable polynomials P and Q where Q has no real root). R(real numbers)

    asked by yin
  133. Chemistry

    Titanium (Ti) can be produced by the reaction of metallic sodium (Na) with titanium tetrachloride vapor (TiCl4). The byproduct of this reaction is sodium chloride (NaCl). Calculate the amount of titanium produced (in kg) when a reactor is charged with 95.0

    asked by Basim
  134. chem

    combination reaction. mg2+o2

    asked by jerry
  135. civics

    what is considered to be fraud

    asked by Mahogany
  136. math

    the lenght of a rectangle is one meter more more than two-thirds of the width. Find the length, width and area of the rectangle if the perimeter is 6 meters.

    asked by justin
  137. math

    y=1/4x+y x=21.5+7y/8

    asked by justin
  138. Statistics

    The number of arrivals per period is distributed according to the poisson with the expected value of 0.75 unit per period. the cost of waiting per unit per period is $3.20. The facility cost for serving one unit per period is $5.15. What expected service

    asked by FRED
  139. maths

    the coordinates of a particle(m/s) in a plane at a given time(t),is 2t,t squared,determine of motion

    asked by oeme
  140. science

    Find the depth in an ocean at which a bubble of air have one forth the volume as it have on the surface of osean

    asked by Ambika
  141. chemistry

    Estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole. Do not refer to the periodic table to solve this problem. The following data may be useful in your calculation:

    asked by amar chauhan
  142. MECHANICS

    (b) A stone is thrust upwards and reaches a height of s= (73.5t-4.9t2) metres at the end of t seconds. Determine the highest point of the stone’s ascent. [6]

    asked by Anonymous
  143. math

    we had to go 30km through the city and then 30km through the country.Through the city we averaged 40km/h and through the country we averaged 60km/h.What was our average speed for the entire journey ?

    asked by charlie
  144. math

    there are 3 different ways of travelling from A to B and 5 different ways of travelling from B to C. How many different ways are there of travelling from A to C through B ?

    asked by charlie
  145. math

    A 3 cm cube is painted on all its faces.It is then cut into 1 cm cubes. How many cubes will have paint on exactly 2 faces ?

    asked by charlie
  146. math

    One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It

    asked by Katarzyna
  147. pre- algebra 1

    Jose has 9 more comic books than Robin.Robin has 5 more comic books than Lee. If jose has 23 comic books,how many comic books dose Robin have? How many comic books dose Lee have?

    asked by Shay
  148. posibility

    One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It

    asked by Katarzyna
  149. math

    Therese Felser manages a grocery warehouse which encourages volume shopping on the part of its customers. Therese has discovered that, on any given weekday 70 percent of the customer sales amount to more than $ 100. That is any given sale on such a day has

    asked by Andrew
  150. English

    Hello! Any interesting ideas on how to present new vocabulary? The topic is smoking. Some of the words are:addicted,to promise,to give up and so on. There are 10 unknown words. What to do? :/ There are 22 students (17 years old) and they are learning

    asked by mark
  151. Biology

    Describe the changes you'll see (evolution wise) if you were granted 1 million years of life.

    asked by Jessi
  152. math

    y=x/4+4 x=21.5+7y/8

    asked by sam
  153. chemistry

    Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=5.091 A˚. What is the maximum wavelength (in meters) of

    asked by amar chauhan
  154. Chem

    . Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. A. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3? Show your solution. B. Discuss at least three

    asked by John
  155. history

    need help with a poem on the new frontier and the great society

    asked by Anonymous
  156. social studies

    according to the preamble of the constitution, give at least three reasons why the new constitution is being established?

    asked by kim
  157. Math

    What are the prime numbers for 108?

    asked by Mesi
  158. Math OMG

    what is 3/5 of 65?

    asked by Polly
  159. math

    One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It

    asked by Katarzyna
  160. math hw

    steven bought four rare books that cost $130, $120, $80 and $75 respectivily. if he paid 1/3 of the total cost immediatly and the remainder in three equal payments, how much was each of the equal payments? please show work.

    asked by ellis
  161. Math

    Jayson has 789 cubes hammy had 890 how much in all

    asked by Karen
  162. writing ms.sue

    For my pilgrims essay it said that we needed an example with our reasoning. my reasoning #1: One reason why you should not eat us is that we have a disease in us called bird flu that could kill you. what is an example to go with it?

    asked by Celest
  163. I.T

    Please for 10 computer lab rules.

    asked by Juanita
  164. Math

    Put the numbers 8,6,2,5,10,1,3,7,9,4 in numerical order in five moves. You can only move 1,2, or three numbers at a time.

    asked by Amy
  165. math

    Explain why each survey question might lead to an erroneous conclusion 20. In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading.

    asked by Wayne
  166. computing extrapolation

    Derive the central difference approximation for f''(x) accurate to O(h^4) by applying Richardson extrapolation to the central difference approximation of O(h^2). where f'' = 2nd derivative of x

    asked by ryan
  167. Finance

    St. Luke’s Convalescent Center has $200,000 in surplus funds that it wishes to invest in marketable securities. If transaction costs to buy and sell the securities are $2,200 and the securities will be held for three months, what required annual yield

    asked by Rebekah
  168. Science URGENT!

    I relly need help on these questions please help me :) 1. would karyotypes from the same family look similar? Explain. 2. Provide one reason as to why it would be useful to compare karyotypes of family members. 3.

    asked by Winnie
  169. math work

    the sale of tvs rose from 17,800 to 24,000. by approximtaly what percent did the total number of flat-screens tv sets increase? please show work.

    asked by ellis
  170. Math

    A pizza shop tried 45 new type pizza during the past year and 20% percent of them became popular. Which best represents the fraction of pizzas that did not become popular?

    asked by Bob
  171. Math

    A pizza shop tried 45 new type pizza during the past year and 20% percent of them became popular. Which best represents the fraction of pizzas that did not become popular?

    asked by Bob
  172. math

    what is the volume in cubic feet if you have a cylindrical object whic is 8' in diameter and is 16' feet long.? could you please show in detail how to figure this out? thank you

    asked by jay
  173. Physics

    A 1.31-kg block slides across a rough surface such that it slows down with an acceleration of 1.39 m/s2. What is the coefficient of kinetic friction between the block and the surface?

    asked by Lyna
  174. math

    the width in cm of a rectangle is the same as the slope of the line 5x-6y=-14, and its length in cm is the same as the slope of the line that is perpendicular to the line 9x+4y=87. Find the perimeter of the rectangle.

    asked by daniel
  175. ENGLISH

    Identify the regular or irregular verb:John has become or has became a rather good actor. I choose ( has become)

    asked by ALLISON
  176. Calculus

    If f(x)=6arcsin(x4), find f'(x).

    asked by Anonymous
  177. math

    (2/3-5/12)^2+(-5/6-2/3)^2

    asked by justin
  178. english(The Lord of Flies

    What view of man is Golding presenting in the statement “the rules are the only thing we got?”

    asked by tlofhanu
  179. Calculus

    lim e^x/sin(11 x) x->0

    asked by Anonymous
  180. science

    what do oxygen and sugars do in photosynthesis

    asked by grace
  181. Calculus

    y=x^logbase5(x)

    asked by Anonymous