Questions Asked on
November 17, 2011

  1. cheistry

    Write a net ionic equation for the overall reaction that occurs when aqueous solutions of hydrosulfuric acid and potassium hydroxide are combined. Assume excess base.

    asked by savannah
  2. physics

    starting from reast a boat increases its speed to 4.12 m/s with constant acceleration. (a) what is the boat's average speed? (b) If it take the boat 4.77s to reach this speed, how for has it traveled?

    asked by taylor
  3. Chemistry

    A 30.00mL sample of 0.150M KOH is titrated with 0.125M HClO4 solution. Calculate the pH after the following volumes of acid have been added: 30.0 mL, 35.0 mL, 36.0 mL, 37.0 mL, 40.0 mL

    asked by Shana
  4. physics

    A child slides down a hill on a toboggan with an acceleration if 1.5 m/s2^2. If she starts at rest, how far has she traveled in (a) 1.0s,(b) 2.0s, and (c) 3.0s?

    asked by taylor
  5. chemistry

    What is the solubility of silver carbonate in 0.1 M Na2CO3

    asked by brittany
  6. Chemistry

    A candy sample is completely combusted in a bomb calorimeter. The calorimeter contains 982 g of water, and the measured temperature increase is 2.62°C. What is the fuel value of the candy sample in nutritional Calories?

    asked by Chemistry Chick
  7. physics

    Air bags are designed to deploy in 10 ms. Estimate the acceleration of the front surface of the ba as it expands. Express your answer in terms of the acceleration of gravity g.

    asked by taylor
  8. statistics

    The National Association of Realtors estimates that 23% of all homes purchased in 2004 were considered investment properties. If a sample of 800 homes sold in 2004 is obtained what is the probability that at least 175 homes are going to be used as

    asked by ugo
  9. calculus

    An oil can is to be made in the form of a right circular cylinder to have a volume of 16 pie inches cubed. Find the dimensions of the can that requires the least amount of material

    asked by Betty
  10. Physics

    The position of a mass oscillating on a spring is given by x=(4.7 cm)cos [2pi t/(0.52 s)]. What is the period of this motion? What is the first time the mass is at the position x=0?

    asked by Cooper
  11. calculus

    a fence 8 ft tall stands on level ground and runs parallel to a tall building. if the fence is 1 ft from the building, find the length of the shortest ladder that will extend from the ground over the fence to the wall of the building. (hint #1: if L

    asked by robert
  12. English/ 11th grade

    Analyze the sentence to select the adverb clause, subordinating conjunction, and the word(s) modified in the appropriate boxes below... 1)When you obey your parents, you please the Lord. Adverb clause: When you obey your parents Subordinating conjunction:

    asked by Amy
  13. Chemistry

    Calculate the standard enthalpy change for the reaction 2C8H18(l)+17O2(g)> 16CO(g) + 18H2O(l) Given 2C8H18(l)+25O2(g)>16CO2(g)+18H2O(l) deltaH=-11020 kj/mol 2CO(g)+ O2(g)>2CO2(g) Delta H=-566.0 kj/mol The > is supposed to be an arrow :)

    asked by Nicole
  14. Physics

    In an electronics factory, small cabinets slide down a 30 degree incline a distance of 16 m along the incline to the next assembly stage. The cabinets have a mass of 10 kg each. Calculate the speed each cabinet would acquire if the incline were

    asked by Brooke
  15. statistics

    1. A state’s department of education reports that 12% of the high school students in that state attend private schools. The state university wonders if the percentage is the same in their applicant pool. Admissions officers plan to check a random sample

    asked by fast eddie
  16. government

    What are two alternatives for the high case load fo the supreme court?

    asked by polly
  17. chemistry

    2Na3PO4(aq)+3 Ba(NO3)2(aq)---->Ba3(PO4)2(s)+6NaNO3(aq) a solution containing 3.50g of Na3PO4 is mixed with a solution containing 6.40g of Ba(NO3)2 how many grams of product can be formed? and if the above reaction resulted in 3.659 g of white powder, what

    asked by mckayla
  18. Physics

    The outside mirror on the passenger side of a car is convex and has a focal length of -7.2 cm. Relative to this mirror, a truck traveling in the rear has an object distance of 20 m. Find (a) the image distance and (b) the magnification of the mirror.

    asked by Kristi
  19. Physics

    A .5 kg block is sliding along a tabletop with an initial velocity of .20 m/s. It slides to rest in a distance of .7m. Find the frictional force regarding it motion. The answer given is .0143 N but I do not understand how to get that.

    asked by Brooke
  20. Physics

    Your heart beats with a frequency of 1.35 Hz. How many beats occur in a minute? If the frequency of your heartbeat increases, will the number of beats in a minute increase, decrease, or stay the same? How many beats occur in a minute if the frequency

    asked by Cooper
  21. algebra

    Which properties did Carmen use to solve the following problem? 17 + (45 + 23) 17 + (23 + 45) (17 + 23) + 45 40 + 45 85

    asked by garrett
  22. chemistry

    What is the solubility of silver carbonate (Ag2CO3) in pure water

    asked by brittany
  23. science

    is cinnamon ionic or covalent

    asked by kylie
  24. Living environment

    7. The lost of flying by the beetle is most probably the result of (1) predators eating the beetles’ wings (2) beetles not using their wings (3) genetic changes in the beetles (4) lack of vegetation for the beetle to feed on IS THE Answer 3

    asked by SYNC
  25. Chemistry

    A buffer solution contains HC2H3O2 at a concentration of 0.225 M NaC2H3O at a concentration of 0.164 M. The value of Ka for acetic acid is 1.75 × 10-5. Calculate the pH of this solution using the Henderson-Hasselbalch equation. Could you please show

    asked by Chemistry Chick
  26. physics

    A concave mirror has a focal length of 13 cm. The mirror forms an image located 40 cm in front of the mirror. What is the magnification of the mirror?

    asked by Kristi
  27. Physics

    A 15 kg model airplane flies horizontally at point A that is 20 m about point B. It has a speed of 19.993 m/s at point A. It then flies horizontally at point B. If the loss of potential energy is reflected as an increase in kinetic energy, what is the

    asked by Brooke
  28. Chemistry

    Purple light in the visible region of the electromagnetic spectrum has a shorter wavelength than does the green region of the spectrum. Which of the following can you conclude? Is it: a)a photon of purple light has a higher frequency than does a photon of

    asked by Lisa
  29. math

    using problem 17-21 calculate the first 2 years depreciation assuming the units of production method. this machine is expceted to produce 120,000 units. in year 1 it produced 19,000 units and in year 2 38,000 units problem 17-21 Jim company bought a

    asked by Anonymous
  30. Physics

    A 0.55-kg air cart is attached to a spring and allowed to oscillate. If the displacement of the air cart from equilibrium is x=(10.0 cm)cos[(2.00 s ^-1)t + pi], find the maximum kinetic energy of the cart. Find the maximum force exerted on it by the

    asked by Cooper
  31. Physics

    A ball rolls on a circular track of radius 0.65 m with a constant angular speed of 1.2 rad/s in the counterclockwise direction. Part A If the angular position of the ball at t= 0 is theta= 0, find the x component of the ball's position at the time 2.6 s.

    asked by Cooper
  32. calculus

    Two cars start moving from the same point. One travels south at 28mi/h and the other travels west at 50mi/h. At what rate is the distance between the cars increasing 4 hours later?

    asked by L.J
  33. math

    How many different 3 digit numbers less than 500 can be made using the digits 3, 4, 5, and 6 if the digits can be used only once

    asked by Anonymous
  34. Calculus

    Evaluate the integral by interpreting it in terms of areas. In other words, draw a picture of the region the integral represents, and find the area using high school geometry. interval 0 to 11 |3x-15|dx

    asked by Anonymous
  35. math

    Marvin Company has a beginning inventory of 12 sets of paints at a cost of $1.50 each. During the year, the store purchased 4 sets at $1.60, 6 sets at $2.50 and 10 sets at $3.00. By the end of the year, 25 sets were sold. Calculated (a) the number of paint

    asked by Anonymous
  36. Chemistry

    What is the minimum volume of 6.5M HCl required to completely dissolve 24.0g of magnesium metal?

    asked by Lorena
  37. Math

    Lena Horn bought a Toyota Tundra for $30,000 with an estimated life of 5 years. The residual value of the truck is $5,000. Assume a straight line method of depreciation (a) what will be the book value of the truck at the end of year 4 (b) If the chevy

    asked by Anonymous
  38. english

    what is the adverb in the sentence They are always late for ballgames. is it always

    asked by dylan
  39. Math

    A sneaker outlet has made the following wholesale purchases of new running shoes: 12 pairs at $45, 18 pairs at $40 and 20 pairs at $50. An inventory taken last week indicates that 23 pairs are still in stock. Calculate the cost of this inventory by FIFO.

    asked by Anonymous
  40. calculus

    the cost (in dollars) of producing x units of a certain commodity is C(x)=5090+13x+0.09x^2. Find the average rate of change with respect to x when the production level is changed from x=105 to x=107.

    asked by L.J
  41. Physics

    A drop of water on a countertop reflects light from a flower held 2.8 cm directly above it. The flower's diameter is 1.7 cm, and the diameter of the flower's image is 0.17 cm. What is the focal length of the water drop, assuming that it may be treated as a

    asked by Kristi
  42. calculus

    A man starts walking north at 3ft/s from a point P. Five minutes later, a woman starts walking south at 6ft/s from a point 500ft due east of P. At what rate are the people moving apart 15min after the woman starts walking?

    asked by L.J
  43. Living environment

    9.When lions prey on a herd of antelope, some of the antelope are eliminated. Which part of the theory of evolution can be used to describe this situation? (1) sexual reproduction of the fittest (2) isolation of the species (3) survival of the best adapted

    asked by SYNC
  44. Physics

    In unit-vector notation, what is the torque about the origin on a particle located at coordinates (0, -4.90 m, 4.04 m) due to (a) force 1 with components F1x = 2.67 N and F1y = F1z = 0, and (b) force 2 with components F2x = 0, F2y = 1.23 N, F2z = 5.41 N?

    asked by Em
  45. maths

    Two planes take off from the same airport at the same time. One plane travels on a bearing S 12degreeW at 400 miles per hour. The other plane travels on a bearing N 75degreeE at 300 miles per hour. How far are the planes from each other 3 hours after

    asked by ritu
  46. Algerbra 1

    Translate into an algerbraic expression One more than three times a number The translation is (Type expression using x as variable) Simplify 42xy/49x The answer is Type as integer of fraction Use a commutative law to fin an equivalent expression nm An

    asked by Connie
  47. math

    you need exactly A 1680 ft3 aquarium for you fish. at the pet store you see four chices of aquariums, but the volume is not listed. the length, width, and height are listed on the box. which of the following aquarioums would fit your needs? a)

    asked by iris
  48. physics.pls help

    An ice hut used for winter fishing is at rest on a level patch of snow. The mass of the hut is 80kg. A wind exerts a horizontal force of 205N on the hut, and causes it to accelerate. While in motion, the magnitude of the force of friction acting on the hut

    asked by ted
  49. English

    Are there any metaphors in the poem Young by Anne Sexton? If so, what are the metaphors?

    asked by chelsea
  50. Physics

    When a 0.213-kg mass is attached to a vertical spring, it causes the spring to stretch a distance d. If the mass is now displaced slightly from equilibrium, it is found to make 150 oscillations in 52.0 s. Find the stretch distance, d.

    asked by Cooper
  51. Physics

    A parachutist descending at a speed of 10.0 m/s loses a shoe at an altitude of 40.0 m. (Assume the positive direction is upward.) when does the shoe reach the ground??

    asked by Anonymous
  52. chemistry

    if 10mL of acetone is diluted with water to a total of 200mL, what is the percent by volume in the propane solution?

    asked by Anonymous
  53. international economic

    2.) This question uses the general monetary model, in which L is no longer assumed constant and money demand is inversely related to the nominal interest rate. Consider the same scenario described in the beginning of the previous question. In addition, the

    asked by Anonymous
  54. chemistry

    Write a net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and perchloric acid are combined.

    asked by savannah
  55. english/11th grade

    He responds whenever he is called. In this sentence the Adverb clause is: whenever he is called and the Subordinating conjunction is: whenever what is the word modified? how can i figure out which word it is?

    asked by Amy
  56. calculus

    the cost (in dollars) of producing x units of a certain commodity is C(x)=5579+13x+0.03x^2. Find the instantaneous rate of change with respect to x when x=103.

    asked by Hunry
  57. calculus

    a farmer has a 2040 ft of fencing and wishes to fence off two separate fields. one of the fields is to be a rectangle with the length twise as long os the width. while the other field is to be square. determine the dimension of the fields if the farmer

    asked by robert
  58. business

    A data processing analyst for a research supplier finds that a preliminary computer run of survey results show that consumers love a client’s new product. The employee buys a large block of the client’s stock. Discuss the ethical ramifications of this

    asked by Anonymous
  59. English

    Which of the following are characteristic of the growth of realism? An embracing of the ideals but not the methodology of later romanticism, a focus upon the lower classes, and a "slice of life" approach A reaction against romanticism, a reaction against

    asked by Anonymous
  60. physics

    You are driving through town at 12.0 m/s when suddenly a ball rolls out in front of you. You apply the brakes and begin decelerating at 3.5 m/s^2.(a)How far do you travel before stopping?(b)When you have traveled only half the distance in part(a), is your

    asked by taylor
  61. physics

    What is the acceleration experienced by the tip of the 1.5 cm long sweep second hand on your wrist watch

    asked by Anonymous
  62. physics

    On october 9,1992, a 27 pound meteorite struck a car in peeskill,NY leaving a dent 22 cm deep on the trunk. If the meteorite struck the car with a speed of 550 m/s, what was the magnitude of its deceleration, assuming it to be content?

    asked by taylor
  63. Physics

    A hammer slides down a roof that makes a 40.0 degree angle with the horizontal. What are the magnitudes of the components of the hammer's velocity at the edge of the roof if it is moving at a speed of 4.25m/s?

    asked by Wilson
  64. physics

    A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +24.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +16.0 revolutions. (a) How much time does it take for the bike to

    asked by Taylor
  65. physics

    A 3.28-kg bucket is attached to a disk-shaped pulley of radius 0.108 m and mass 0.727 kg. (a) If the bucket is allowed to fall, what is its linear acceleration? (b) What is the angular acceleration of the pulley? (c) How far does the bucket drop in 1.65 s?

    asked by tara
  66. math

    Please show me how to solve: For what value of k are the graphs of 12y = -3x + 8 and 6y =kx - 5 parallel? For what value of k are they perpendicular?

    asked by Jane
  67. math

    find the opposite or additive inverse of -38

    asked by Willis
  68. chemistry

    I wanted to check my True and False Chemistry HW. I am not 100% they are correct. 1.the number of neutrons in an atom is reffered to as its atomic number False 2.the periodic table is arranged by increasing atomic number True 3.atomic number is equal to

    asked by Allura
  69. Chemistry

    Fermentation of carbohydrates is a source of 1. ethanol 2. MTBE 3. methanol 4. ethers I am working on self test in the book, but the answer is not in the back of the book for this. Any help??

    asked by nan
  70. chemistry

    The reasons why copper dissolves in AgNO3 solution but remain insoluble in Pb(No3)2 solution.help me.thank you

    asked by gbemisola
  71. Linear Programming

    Riverside oil company in eastern Kentucky produces 3 different grades of gasoline. They are regular, premium, and supreme grades. Each barrel of regular grade sells for $77 while premium grade sells for $82 per barrel and supreme grade sells for $89 per

    asked by Ashley
  72. physics

    Tom the cat is chasing Jerry the mouse across a table surface 1.8 m off the floor. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 7.6 m/s. Where will Tom strike the floor? The acceleration of

    asked by Anonymous
  73. algebra

    will had 32.80 to spend on school supples . if he spends 3/4 how much will he have left ?

    asked by Anonymous
  74. Chemistry

    What is the molality of a solution prepared by dissolving 81.5 g of ethylene glycol, HOCH2CH2OH, in 1.36 L of water? Assume the density of water is 1.00 g/ml.

    asked by Silvie
  75. Physics

    A mass of 5kg decending vertically draws up a mass of 3kg by means of a light string passing over a pulley. At the end of 4s the string breaks. how much higher the 3kg mass would go?

    asked by Rashmita
  76. Math

    Lisa studies for 7 hours for a particular test and got a score of 71, how many hours would she have had to study to get a score of 91?

    asked by Mike
  77. Physics

    A solid brass ball of mass 9.5 g will roll smoothly along a loop-the-loop track when released from rest along the straight section. The circular loop has radius R = 4.2 m, and the ball has radius r

    asked by Bridgette
  78. chemistry

    in an experiment 5.00ml of 0.1440 mol L^1- aqueos KIO3 was reacted with an excess of aqueous iodide and the molecular iodine I2, Formed was titrated against 0.1000mol L^1- aqueous S2O3^2- the equation for the titration reaction is: I2(aq)+ 2

    asked by unknown
  79. chemistry

    Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to yield the ester isopentyl acetate which has the odour of bananas. If the yield from the reaction is 45%, how many grams of isopentyl acetate are formed when 3.90 g of acetic acid and 6.28

    asked by kim
  80. chemistry

    What is the molality of a solution prepared by dissolving 75.2 g of ethylene glycol, HOCH2CH2OH, in 1.34 L of water? Assume the density of water is 1.00 g/ml.

    asked by Silvie
  81. Chemistry

    a saturated solution of barium chloride at 30c contains 150g water. how much aditional barium chloride can be dissloved by heating this solution to 50c?

    asked by Helen
  82. physics

    A 29 kg chair initially at rest on a horizontal floor requires a 375 N horizontal force to set it in motion. Once the chair is in motion, a 345 N horizontal force keeps it moving at a constant velocity. The acceleration of gravity is 9.81 m/s2 . a) What is

    asked by hope
  83. calculus

    You are given the four points in the plane A = (-3,7), B = (-1,-6), C = (4,6), and D = (6,-1). The graph of the function f(x) consists of the three line segments AB, BC and CD. Find the integral interval -3 to 6 f(x)dx by interpreting the integral in terms

    asked by Anonymous
  84. art

    Compare Manet’s Olympia to Millais’s Ophelia. Discuss how each work represents the artist and his period

    asked by Eve
  85. calculus

    a trapezoid is a quadrilateral with (only) two sides (called bases) that are parallel. an isosceles trapezoid has two equal legs. the area of a trapezoid is A=(1/2)*h*(b1+b2) where b1 and b2 are the two parallel bases and h is the altitude. your problem: a

    asked by robert
  86. psychology

    "He is never going to change. He is set in his ways," the client complained. "let's think about it. Does this hurt you or him.?" The therapist is applying: a. behavioural therapy b. a cognitive treatment approach c. psychodynamic therapy d. contingency

    asked by vedrana
  87. Question (PLEASE READ!!!)

    What website is when you can ask any questions and other people can answer it something besides YA like free lik jiskha but for people to ask random questions and them answering.

    asked by Laruen
  88. stoichiometry

    How many grams of Nitric oxide are required to produce 145g of nitrogen in this reaction: Al2O3(s)+6NO(g)---->5N2(g)+6H2o(l)

    asked by mandy
  89. physics

    when you see a traffic light turn red you apply the brakes until you come to a stop. if your initial speed was 12 m/s, and you were heading heading due west, what was your average velocity during braking? Assume constant deceleration.

    asked by taylor
  90. Physics

    Two people with a combined mass of 135 kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 9.80 cm. When the car hits a bump in the road, it oscillates up and down with a period of 1.76 s. Find the total load

    asked by Cooper
  91. literary

    What are a few allusions to Oedipus in literature, besides Froid? I can use references from either fiction or non-fiction. Please help I Haven't been able to find anything online

    asked by Vanessa
  92. math

    shawna reduced the size of a rectangle to a height of 2 in. what is the new width if it was originally 24 in wide and 12 in tall ? how do you solve it if the answer is 4?

    asked by kimberly
  93. math

    The force F (in Newtons) required to move a box of mass m kg in motion by pulling on an attached rope is F(x) = f m g/(cos(x))+ f (sin(x)) where x is the angle between the rope and the horizontal, f is the coefficient of static friction and g = 9.8 m/s^2.

    asked by ali
  94. CHEMISTRY

    name this alkyne ch3-ch2-ch2-ch3(cßCH)-CH2-CH2-CH2-CH3 is a heptyne but i just cant figure out the name . Ive tried 1-heptyne but its not the right answer :S help?

    asked by Mike
  95. Javascript

    Input: A text string, using prompt. Output: Either "Valid name" or "Invalid name", depending on whether the input names fit the required format, which is Last name,first name, middle initial where neither of the names have more than 15 characters.

    asked by Adam
  96. Physics question

    A 14 kg mass is dragged across a rough surface by a rope that makes an angle of 12° above the horizontal. If the tension in the rope is 349 N, determine the forward acceleration. Assume that µs = 0.64 and µk = 0.47. I just can't seem to do this at

    asked by Tate
  97. Physics

    A 1.5 N force acts on a .20 kg cart so as to accelerate it along a frictionless track. If it is accelerated from rest, how fast is it going after .3m? The answer given is 2.12 m/s but I am not sure how to get to that.

    asked by Brooke
  98. geometry

    IVEN: trapezoid ABCD EF are the midpoints of segment AB and segment CD, PROVE: segment EF is parallel to segment BC is parallel to AD , segment EF= one-half (AD + BC)

    asked by Anonymous
  99. Chemistry

    a saturated solution of barium chloride at 30c contains 150g water. how much aditional barium chloride can be dissloved by heating this solution to 50c?

    asked by Helen
  100. Physics

    A cylinder shaped buoy is stationary out on a lake. The height of the buoy is 1 m and the diameter is 30 cm and it‘s mass is 50 kg. Now a whale swims under the buoy and hit it. The buoy raises up and begins to oscillate. a) Find the total force on the

    asked by Amber
  101. Physics

    The cable supporting a 2123 kg elevator has a maximum strength of 25982 N. What maximum upward acceleration can it give the elevator without breaking? Can someone give me step by step on how to solve this?

    asked by Jin Hwang
  102. calculus

    Determine an appropriate linear approximation of the function f(x)= the square root of x and use it to approximate the square root of 24.2. Write your answer in decimal form

    asked by No Name
  103. Physics

    A 5.00 m long rigid beam with a mass of 200.0 kg is supported at each end. A 55.0 kg student stands on the beam, 1.40 m from the left support and a 70 kg student stands 1.2 m from the right support. How much upward force does each support exert on the

    asked by Anonymous
  104. Personal Finance Management

    Jenny has a part time job and her net take-home income is $2000 per month. She needs to allocate her funds to reflect a balanced monthly budget. Jenny's main categories of expenses include rent, utilities, and groceries. How would Jenny best utilize her

    asked by Lashan
  105. chemistry

    a given mass of hydrogen occupies 40.0L at 700 torr. what volume will it occupy at 930 torr

    asked by aaa
  106. algebra

    The present ages in years of four cousins are consecutive multiples of 3. Five years ago the sum of their ages was 46. What is their ages now?

    asked by Zephine
  107. chemistry

    are this 2 equations the same NIE? and if not how come? Write a net ionic equation for the reaction that occurs when aqueous solutions of ammonia and acetic acid are combined. Write a net ionic equation for the reaction that occurs when aqueous solutions

    asked by savannah
  108. Living environment

    The process of natural selection is based on the assumption that (1) environmental changes will cause changes in body structures in individuals (2) most changes from generation to generation are the result of mutations (3)part of the population of

    asked by SYNC
  109. Math

    If h = 6 units, X = 9 units, Y = 13 units, and Z = 17 units, then what is the volume of the triangular prism shown above?

    asked by Fairfax Highschool
  110. Math- Pre calc

    A 60 foot antenna stands on top of a building. From a point on the ground, the angle of elevation to the top of the antenna measures 48 degrees and 39 degrees to the top of the building. How tall is the building?

    asked by Chell
  111. algebra

    Hat sizes are determined by measuring the circumference of one's head in either inches or centimeters. Use ratio and porportion to complete the following table. hat size Head circumference 7 1/4 (to nearest 1/5inch) 7 1/8 22 4/5 Head circumference (to

    asked by lisa
  112. Math

    Brenda and her family were driving to her grandmother’s house during a holiday. During the drive, Brenda fell asleep halfway through the trip. When she awoke, her family still had to travel half the distance that she had traveled while she was sleeping.

    asked by MATH Help Please
  113. chemistry

    in an experiment 5.00ml of 0.1440 mol L^1- aqueos KIO3 was reacted with an excess of aqueous iodide and the molecular iodine I2, Formed was titrated against 0.1000mol L^1- aqueous S2O3^2- the equation for the titration reaction is: I2(aq)+ 2

    asked by Yulieth
  114. english

    Write each sentence, using the subject pronoun that best replaces the underlined word or words. The neighborhood grocer sells a lot of fresh fruit. underlined word The neighborhood grocer

    asked by stephanie
  115. chemistry

    Which of the following does NOT have an angular shape? 1. NH2 - 2. ClO2 - 3. HOCl 4. S3 -2 5. N3 -

    asked by Aubrey
  116. Physics

    A 26.0 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley (Fig. 4-57). The coefficient of static friction between the table and the block is 0.490 and the coefficient of kinetic friction between the table and the

    asked by Millie
  117. chemistry

    A reaction occurs where the concentration of reactant A changes from 0.74 moles/liter to 0.63 moles/liter in 20 seconds. what is the average rate of reaction?

    asked by Maddie
  118. English 7 (please read and please help!)

    We have to write this essay for english. Here is the info. We are working on the intro for our essay B = Broad Statement I = Illustrate (Example) N = Narrow the Topic T = Thesis Statement Essay Topic * Explain how his/her (Rose Parks) characteristics were

    asked by Laruen
  119. calculus

    a plane flying horizontally at an altitude of 2 mi and a speed of 460 mi/h passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 5 mi away from the station.

    asked by L.J
  120. Algebra 1

    The crowd that heard the President speak was estimated to be 10,000 peoples. The actual crowd could be 750 people more or less than this. What are the possible values for the actual crowd size?

    asked by Katie D.
  121. math

    grace has 16 in her pocket. she has 8 red ibesm 4 green ones, and 4 blue ones. what is the minimum number of jellybeans she must take out of her pocket to ensure that she has one of each color?

    asked by iris
  122. programming

    creat a logic for a program that continuously prompts the user for a numeric number of dollars until the user enters 0. pass each entered amount to a conversion method that displays breakdown of the passed amount into the fewest bills

    asked by william
  123. Alg. II

    Simplify. Identify any x-values for which the expression is undefined. 1. (4x-8)/(x^2-2x) 2. (8x-4)/(2x^2+9x-5)

    asked by Lily
  124. Psychology Please Help!!

    Nisa has grown up in a small village in the foothills. There was no electricity and water had to be hand pumped. They seldom saw people from the "outside." When she entered school the bus had to pick her up at 6:30 a.m. in order for her to arrive at school

    asked by Anonymous
  125. statistics

    3. Use the following SAT score data to answer the questions that follow. Gender Verbal Math M 600 690 M 610 550 F 490 800 F 680 610 M 520 540 F 680 660 M 650 700 M 600 560 F 550 560 M 490 390 F 530 530 M 560 560 F 630 590 F 510 520 M 710 740 F 550 560 M

    asked by brandon
  126. physics

    a gymnast tumbles forward 4.0m does cartwheels to the left for 6.0 m and climb a vertical rope to a height of 3.0m. What is the magnitude of the plane's displacement from the airport?

    asked by Zady
  127. math

    what is the GCF of 300 and 225 using prime factorization

    asked by stephen
  128. Physics

    A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.41 s, and the spring in the scale has a force constant of 640 N/m. What is the mass of the grapes? What is the weight of the grapes?

    asked by Cooper
  129. math

    Patricia estimated that 439 - 186 would be close to 300. Do you agree? Explain and solve the problem.

    asked by sandra
  130. physics

    The sound level in decibels is typically expressed as β = 10 log (I/I0), but since sound is a pressure wave, the sound level can be expressed in terms of a pressure difference. Intensity depends on the amplitude squared, so the expression is β = 20 log

    asked by maria
  131. Physics

    A mass attached to a spring oscillates with a period of 3.15 s. If the mass starts from rest at x= 4.10×10−2 m and time t= 0, where is it at time t= 6.37s? Is the mass moving in the positive or negative x direction at t= 6.37s?

    asked by Cooper
  132. earth

    22. If a man weighs 720 N on Earth, what is his weight on the moon?

    asked by Anonymous
  133. chemistry

    Given the following reaction: TiCl4 + O2→ TiO2 + Cl2 If 51.44 g TiCl4 react with 82.32 g O2 complete a mass balance table for this reaction.

    asked by mary
  134. calculus

    the displacement (in meter) of a particle moving in a straight line is given by the equation of motion s=5t^3+4t+2, where t is measured in seconds. Find the velocity of the particle at t=3.

    asked by L.J
  135. Physics help someone please

    An 800 g, 40.0 cm diameter hollow sphere is rolling along at 4 m/s when it comes to a 25 degree incline. Ignoring any friction, how far along the incline does it roll before it stops and reverses its direction?

    asked by Anonymous
  136. Physics

    a gymnast tumbles forward 4.0m, does cartwheels to the left for 6.0m and climbs a vertical rope to a height of 3.0m. What is the magnitude of the gymnast's displacement?

    asked by Zady
  137. marketing

    Explain the importance of an organized new-product development process and illustrate how it might be used for (a) a new hair care product, (b) a new children’s toy, and (c) a new subscribers-only cable television channel.

    asked by angela
  138. math

    Bayside insurance offers two health plans. Under Plan A Giselle would pay the first $80 of her medical bills, plus 30% of the rest. Under Plan B Giselle would pay the first $140 but only 25% of the rest. For what amount of medical bills with plan B save

    asked by marie
  139. algerbra 1

    -2/3.[-4/5]= -6-7= A hospital parking lot charges $3.00 for the first hour or part thereof and $1.50 for each additional hour or part thereof. a weekly pass cost $33.00 and allows unlimited parking for 7 days. If each visit Johny makes to the hospital last

    asked by Connie
  140. Social Studies

    My most exalted Monarch - Your Majesty Queen Isabella, I am writing this letter most humbly for you to consider my request for three small ships and a crew so that I may sail west and find the shortest route to the East. I promised to chaim land for Spain

    asked by Laruen
  141. math

    You are given a positive integer such that when the integer is divided by 1995, the remainder is 75. What will the remainder be when the same positive integer is divided by 57?

    asked by hee
  142. business

    please give me some idea how should i start writing about this ,i want to write 2 paragraphs. Thanks for any help!!! Pretend that you writing to the editor of your local newspaper. Your purpose is to convince its readers that rather than solely relying on

    asked by study
  143. algerbra

    84=12(3y+1) a.The solution is y= b.The solution is all real numbers c.There is no solution

    asked by Connie
  144. Physics/Engineering

    1. The problem statement, all variables and given/known data I am using a Vishay strain indicator with it hooked up to a strain gage hooked up 1" away from the wall on the solid beam. The beam is .5" by .5", and it is solid. The beam is 16" long and I am

    asked by Z32
  145. physics

    A block of mass m is held against a spring of spring constant k which is compressed a distance Ax. On the shaded region (d = 2 m), there is a coefficient of kinetic friction = 0.3 microcontroller, which then applies the rest of the course takes place

    asked by sarah
  146. Social Studies

    i left my textbook in school but i have the American Nation.. i just need to know what the Geography questions are on page 664... only #1-3

    asked by Danielle
  147. Economic

    1. Use the following information to answer the questions below. Please note that output of good X is measured in 100’s on the x axis, i.e. if you find Q = 10 then output is 10 × 100 = 1, 000 units. You must have a diagram to support you answers. •

    asked by Vishal
  148. Economic

    1. Use the following information to answer the questions below. Please note that output of good X is measured in 100’s on the x axis, i.e. if you find Q = 10 then output is 10 × 100 = 1, 000 units. You must have a diagram to support you answers. •

    asked by Vishal
  149. Chemistry

    Why does only one of these ions (Co, Cu, or Ni) produce a positive flame test?

    asked by Taemin
  150. ELA

    I have to do this project and I have to say what funny stuff could happen if I cleaned my room. I don't know anything funny that could happen. so help me? :D

    asked by Bob
  151. English

    1. The other robber forced me back to the safe. (What is the part of speech of 'back' in the sentence?) 2. He was carring the glass necklace and started down the stairs. 3. He was carring the glass necklace and started coming down the stairs. 4. He was

    asked by rfvv
  152. Physics......

    A ball on a 6.5 m long string swings down and wraps around a post that is 4.0 m below the post the string is attached to. If the ball is released level with the post to which it is attached, what will be the velocity of the ball when it is at its highest

    asked by ....
  153. Physics

    If a force of 20N stretches a spring 15 cm, by what amount will the spring stretch is if a force of 80 N is applied?

    asked by Don
  154. Happiness

    This is a little survey I'm conducting for school. How often are you happy on a regular day? Choose one: 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

    asked by Tinatike
  155. algerbra 1

    6 18/-2= or is it undefined 7 -2+t=9 solution t= 8 Evaluate p/g for p=98 and g=7 p/g= 9 Tell which real number corresponds to the situation. During the game, a person wins 450 points. What is the corresponding numbe in this sentence? 10 Simplify

    asked by Connie
  156. physics

    Question Part Points Submissions Used A bus slows down uniformly from 75.0 km/h (21 m/s) to 0.0 km/h in 220 m. How long does it take to stop?

    asked by Anonymous
  157. algebra

    1. The speed of a passenger trin is 18mph faster than the speed of a freight train. The passenger train travels 260 miles in the same time it takes the feight train to travel 170 miles. Find the speed of each train.

    asked by lisa
  158. Physics please help!!!!!!!

    A ball is thrown vertically upward (assumed to be the positive direction) with a speed of 21.0 m/s from a height of 9.0 m. (a) How high does the ball rise from its original position? (b) How long does it take to reach its highest point? (c) How long does

    asked by Steve
  159. physics

    1) A fask has the following features; a plastic stopper glass walls with silver coating on both sides vacuume between walls plasic spacer Which features of the flask reduce energy transfer by: a) radiation b) conduction c) convection 2) Many vacuume flasks

    asked by lissa
  160. Math

    Joe Ponzio, a financial advisor who bases his investigating strategies on the teachings of Warren Buffett, explains why inventory turnover rates matter to managers, owners, and investors on his August 7, 2009, blog post, He states: "The company doing five

    asked by Anonymous
  161. English

    Thank you very much. What do you think of such a project? I need your help to check vocabulary on endangered species. Which words are possible? 1) A conservation programme is a programme helping endangered species to survive. 2)It protects endangered

    asked by Henry2
  162. psychology

    Kevin hates his job,his girl friend dropped him, and he had a hedeache this morning from staying uo too late eating hamburgers and drinking beer by himself.He has decided to initiate a new attack today and take control of his life.He will find new

    asked by vedrana
  163. phyics

    A novice golfer on the green takes three strokes to sink the ball. The successive dis- placements are 5.9 m to the north, 10 m 45  north of east, and 5.9 m 26 west of south. Starting at the same initial point, an expert (lucky) golfer could make the hole

    asked by robert
  164. Biology

    Please help, anyone! There's 3 types of gene mutation: substitution, deletion, and insertion, right? So what are '2 kinds of gene mutation that causes the protein to be not formed'?? I mean, gene mutations may cause non functional proteins, but that's not

    asked by Hae
  165. history

    "English peoples lives were not affected very much by the building of castles." To what extent do you agree? how am I meant to start? what should I say?

    asked by Anonymous
  166. math

    A ship sails from a port,P, on a course of 060 degrees for 15km to a buoy ,Q. It then changes course in a direction 120 degrees from Q for 25 km to a rig R.

    asked by Anonymous
  167. 5th grade math

    A class consist of half as many boys as girls, if there are 14 boys how many girls are there

    asked by janet
  168. Physics

    A vibrating structural beam in a spacecraft can cause problems if the frequency of vibration is fairly high. Even if the amplitude of vibration is only a fraction of a millimeter, the acceleration of the beam can be several times greater than the

    asked by Cooper
  169. ideas

    i know it's lat,but it's almose my bed time.um do grandparents always be kind of rude and always have different opinions.well sometimes that happens.so what should i do.ms.sue what school do you do to and how old are you.let me guess,you are 12. am i right

    asked by jennifer white
  170. physics

    A college student is at a concert and really wants to hear the music, so she sits between two in-phase loudspeakers, which point toward each other and are 60.8 m apart. The speakers emit sound at a frequency of 428.75 Hz. At the midpoint between the

    asked by maria
  171. Chemistry

    I've exhausted possibilities to find an isotope that has 42 protons and 44 neutrons; does one exist? Molybdenum has 42 protons ... but 54 neutrons so that isn't it. I'm hoping that Dr. Bob can figure this one out for me! You've been helpful with a prior

    asked by Nathan
  172. Physics

    I have posted the same questions over and over and received no help. Will someone please help me? A horizontal spring with a spring constant of 200.0 N/m is compressed 25.0 cm and used to launch a 3.00 kg block across a frictionless surface. After the

    asked by Helppp
  173. Physics

    You have a 2.4 m high platform that is level on top. A spring launcher is located on the top so that it launches objects horizontally. You want to launch a 0.70 kg ball so that it hits at target on the ground 6.0 m away from the base. If the spring

    asked by Dan
  174. Physics

    A satellite made of aluminum with mass 3500 kg travels on circulated path in 100 km height over the earth. Because of airresistance of the airveil the satellite loses energy and falls in a spiral down to earth. a) What is the mechanical energy of the

    asked by Amber
  175. math

    I have a unit circle test tomorrow(converting sin csc cot tan sec cos of radians to numbers(ie cos (pi/4) == root2 over 2) what is a good way to study

    asked by anonymous
  176. SCIENCE-CELLS

    HI, I need the functions of the following parts of a cell: 1.Cytoplasm 2.Nucleus 3.Nucleolus 4.Starch Grains 6.Smooth ER 5.rough ER 6. Ribosome I went on a lot of websites already, but they were all very confusing. Thanks to anyone who helps!

    asked by Howler
  177. CHEMISTRY (HELP!!! PLEASE)

    CH3CH2CH2CH( a c on top of the ch and a triple bond on top of the c)CH2CH2CH2CH3

    asked by Mike
  178. Algerbra 1

    . In your industrial oven, you bake two baking sheets with 12 scones each, two baking sheets with 20 cookies each, and one baking sheet with 2 scones and 10 cookies. a. Write an expression that illustrates the total cost of all baked goods in the scenario

    asked by Connie
  179. Algebra

    Need help factoring 7x^2 + 7x -20

    asked by Chad
  180. physics

    A 41.2 kg student runs down the sidewalk and jumps with a horizontal speed of 4.36 m/s onto a stationary skateboard. The student and skateboard move down the sidewalk with a speed of 4.12 m/s. a. Find the mass of the skateboard (in kg) b. How fast would

    asked by Anonymous...
  181. algebra

    1. Which expression belongs in the space? |--------------- x-2 |x^2 + 7x - 18 -(x^2-2x) -------- 18 a.5x - 18 b.5x + 18 c.9x - 18 d. 9x + 18

    asked by Secretai
  182. Algerbra 1

    1 15-4.10-14 2 9x-18=54 x= 3 Multiply 8/9(b-72) 4 Solve using the multiplication principle -10x=260 solution for x= 5 Multiply 3.(-5.(-3).(-10)=

    asked by Connie
  183. Physics

    A ball on a 6.5 m long string swings down and wraps around a post that is 4.0 m below the post the string is attached to. If the ball is released level with the post to which it is attached, what will be the velocity of the ball when it is at its highest

    asked by .Help pleaseeeeeeeee
  184. Physics Help Please

    A horizontal spring with a spring constant of 200.0 N/m is compressed 25.0 cm and used to launch a 3.00 kg block across a frictionless surface. After the block travels some distance, the block goes up a 32 degree incline that has a coefficient of friction

    asked by Anonymous
  185. algebra

    The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 58cm when the weight is 3kg, what is the distance when the weight is 8kg

    asked by lisa
  186. science

    what happens to washing soda crystals when mixed with sulphuric acid

    asked by daz
  187. chemistry

    In an industrial process, the following reaction is carried out in the presence of a catalyst: C2H51 + Cl2 → C2H51Cl12 Calculate the percentage yield if 405.58 grams of C2H51 are used in the reaction and 474.91 grams of C2H51Cl12 are produced.

    asked by mary
  188. english

    In the sentence: Not only it does affect women and children, but it also affects our society and our future generations. is the sentence correct? Thank you :)

    asked by Zach
  189. Chemistry

    Given HCL + SrO --- SrCL2 + H20 Calculate the mass of HCl in grams that would react with 4.85 kg SrO.

    asked by nms
  190. math

    The Ministry of Finance published the FY2009 Tax Reform ( Main Points) on December 19, 2008. Included in the Reform is the introduction of a 2- year measure allowing immediate depreciation for investment in energy- saving facilities and appliances. If this

    asked by Anonymous
  191. algerbra 1

    5 Multiply 3.(-5.(-3).(-10)=

    asked by Connie
  192. Trigonometry

    Help trig question involving discriminant? a)Find the value of the discriminant. b)Use any method to find the real roots of the equation if they exist. 2x^2+7x=0

    asked by Tomtom
  193. trig

    5. If the angles X and Y each measure between 0° and 90°, and if sinX = cosY, what is the sum of the measures of the angles X and Y?

    asked by kc
  194. Math

    How do you do scientific notations?

    asked by Darien
  195. Accounting

    What are some of the different types of budgets? Describe in detail one type of budget covered in the text. Describe what the budget is used for and what information it provides a business. As you respond to your classmates, discuss how the budget you

    asked by Marty Wall
  196. algerbra

    -x/7=1/26 the solution is x=___________

    asked by Connie
  197. Algerbra

    [4-8(3-6)]=

    asked by Connie
  198. chemistry help me ASAP

    ComPLETE THE FOLLOWING EQUALITIES 1molBa(OH)2FU=____g Ba(OH)2=____Ba(OH)2FU 1Na atom=______amu Na

    asked by Anonymous
  199. Physics - Rotational Motion

    A ball of mass 5.3 kg and radius 8 cm rolls without slipping horizontally at 4.3 m/s and hits a spring attached to a wall. What is the maximum change in length of the spring if the spring constant k=41100N/m? (Assume the floor is frictionless)

    asked by Jim
  200. algerbra

    8/9(b-72)=

    asked by Connie
  201. math

    What is the principle of powers? Describe in your own words. When solving a radical equation, how do we use the principle of powers to eliminate radicals? Demonstrate with an example.

    asked by Allison
  202. English

    He wondered __________ he should see about his abdominal pain. who or whom

    asked by cbaz
  203. algerbra 1

    15-4.10-14=

    asked by Connie
  204. algerbra 1

    6 18/-2= or is it undefined

    asked by Connie
  205. Fine Art 7

    I'm drawing a earth and drawing people holding hands (their clothes are going to be in rainbow), is there any culture that wears the following colors: red, orange, yellow, green, blue, purple. Like for example when I'm drawing a Jamaican person their

    asked by Laruen
  206. Math

    Can you show us how to find the discriminant of the quadratic x^2 + 2x -2 =0

    asked by Allison
  207. algerbra 1

    7 -2+t=9 solution t=

    asked by Connie
  208. Physics

    Tarzan, played by Patrick Huard, 60 kg, must cross a stream 5 m wide, and full of hungry crocodiles. To do this, decides to slide along a sloping tree trunk, hollowed and moist so that there is no friction. After the trunk, there is a part of 3 m platform

    asked by Alani
  209. Math

    solve: 4x^2 + 14x = 0 help me solve

    asked by Allison
  210. spanish

    Which word best fits this sentence. La clase de ciencias sociales es (facil) (aburrida) (dificil) (divertida). Hay mucha tarea todos los dias.

    asked by Shawn
  211. post

    retire in 30 yrs. annual deposits in ira to accumulate 450,000 in 30 years at 10% per year average what is the annual contribution?

    asked by Rita
  212. math

    39 and f more

    asked by mekhi
  213. Math

    Ms Sue, How did you get that answer? Can I get an example? My current question was 39 and f more and your answer was 36 + f

    asked by mekhi
  214. Math

    Find two consecutive whole numbers such that 3/4 of the first number is 5 more than the second number.

    asked by Tyler
  215. math

    Is this correct 26 more than z is 26+z

    asked by mekhi
  216. Finance

    listing the different sources of short-term financing. Discuss the characteristics of each source and explain why a company might choose one over the other.

    asked by joan
  217. Math

    Prove these identites I really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2 +sin^2=tan^2+sin^2

    asked by Caroline
  218. math

    what is the cost in dollars to steam clean a room W yards wide and L yards long if the steam cleaners charge 10 cents per square foot?

    asked by iris
  219. chemistry

    what is a double replacement precipitation reaction and limiting reactants

    asked by joe
  220. English

    Can you please help me rephrase this song? 1)The song is about a successful city-dweller caught in a rat race. However, he is tired of continuously competing for success and leading a very stressful life in the city. 2) He decides to move to the country to

    asked by Henry2
  221. math

    a room mesures 11ftx12ftx9ft. what is the volume?

    asked by iris
  222. math

    how many different tetrahedrons are determined by ______ given no four are coplanar? 4 points in space 9 points in space 15 points in space n points in space

    asked by Cody
  223. chemistry!

    what is a dipole and what are ion-dipole attractions, dipole dipole attractions and dipole-induced attractions? examples.. would rly help me understand it better

    asked by steph
  224. calculus

    Find a, such that the function f(x)=3x+rad(a-x^2) has the domain [-6,6].

    asked by L.J
  225. calculus

    if a snowball melts so that its surface area decreases at a rate of 1 cm^2/min, find the rate at which the diameter decreases when the diameter is 43cm. Leave pi in your answer please.

    asked by L.J
  226. SCIENCE

    What is the history of sonar

    asked by 17halimk
  227. physics

    A horizontal force of 5.0 N is required to move a body of mass 3.0 kg with uniform velocity along a horizontal floor. Find the coefficient of kinetic friction.

    asked by Ange
  228. MATH

    Source: At the end of 1993, scientists tracked 1550 nonfunctional components in orbit and projected 42 such objects are added each year. Suppose that an average of 15 of these are brought back to Earth each year. Question. Let t represent time in years.

    asked by Rebecca
  229. Math

    1. 9-5 3/4 = 2. 7/8 + 3 1/4 = 3. 5 1/9 -2/3 = 4. 5/8 + 5/6 = 5. 13 1/2 + 7 2/3 =

    asked by Brad
  230. math

    if the perimeter of a rectangular house is 44 yards, and the length if 36ft, what is the width of the house?

    asked by iris
  231. math

    44 more thatn Q algebraic expression

    asked by Johnson
  232. Algebra 2

    A=2*3.14*pw A=22cm squared w=2 solve for p

    asked by Dana
  233. Math

    Explain how you can estimate to tell whether 433-147=286 is reasonable.

    asked by sandra
  234. Critical Thinking

    Identify the correct fallacy of relevance committed by the following arguments, explain how it is used in the example, and determine what is wrong with the reasoning. (ex. What should have been said or argued? 1) Convicted murder Johnny Palko has argued

    asked by Alex L.
  235. geometry

    Trapezoid PQRS was rotated 60° around a point. Which point could have been the center of this rotation?

    asked by Anonymous
  236. Physics

    A car starts from rest and travels for 6.0 s with a uniform acceleration of +1.5 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for 3.0 s, how fast is the car going at the end of the braking

    asked by Elias
  237. English

    I have a few more doubts. Thank you. The next morning (Can you say "on the next morning?) We are being showed (is is a mistake or "shown" is correct?) I waited for her to prepare/get ready (Are both possible?)

    asked by Henry2
  238. cant find it

    according to recent curriculim guidelines, what percent of the class time should students spend in hands-on learning experiences?

    asked by Anonymous
  239. Physics

    A small fish is dropped by a pelican that is rising steadily at 0.65 m/s. (Assume the positive direction is upward.) 1. After 2.5 s, what is the velocity of the fish? 2. How far below the pelican is the fish after 2.5 s?

    asked by David
  240. English

    I have a few more doubts. Thank you. 1) I waited for her to prepare heself (?) How high is the fare to London? Are there any reductions for students? 2) How large is the population of Italy? To the North Italy borders to Austria, Switzerland etc (is "to

    asked by Henry2
  241. Chemistry

    A typical buffer used by biochemists is called Tris, which can be depicted as R3N. A buffer that is prepared by mixing 500ml of .05M R3N with 500ml of .05MR3NHCl at 25 C has a pH of 8.40. If this same buffer is placed in a cold room at 4 C the pH increases

    asked by Josh
  242. Science

    Facts about the sun are? I have 1. the only star in our solar system 2. sun spots are cooler areas on sun's surface 3. from solar energy 4.Solar flares 5. only star you see during the day 6.made of gas 7.closest star to our earth

    asked by Johnny
  243. Math-Help-please?

    Source: At the end of 1993, scientists tracked 1550 nonfunctional components in orbit and projected 42 such objects are added each year. Suppose that an average of 15 of these are brought back to Earth each year. Question. Let t represent time in years.

    asked by Rebecca
  244. math

    -94+(-19)

    asked by Johnson
  245. beginning band

    what are the instrumemt groups heard in this ensemble tabuh kenilu sawik

    asked by Peteesa
  246. algebra

    The stopping distance d of a car after the brakes are applied directly as the square of the speed r. If a car traveling 80mph can stop in 360ft, how many feet will it take the same car to stop when it is traveling 90mph

    asked by lisa
  247. English 7 (word)

    what does discriminated against means????

    asked by Laruen
  248. Physics problem.. :/

    A 8.7 kg block is on a frictionless surface. It is connected by a string over a pulley to a 8.6 kg hanging mass. Find the acceleration of the block. ?

    asked by Kat
  249. science

    what did galileo do in science that made him so famouse

    asked by david
  250. algebra

    john had 35 Dollars before spending N dollars on clothes how much money remains

    asked by cree
  251. Chemistry

    I am stuck in the PLUG-N-CHUG PART. Here is what I get when I plug-n-chug...1.75 x 10-5 + log[0.164M/0.225M] I get the pH as 4.62 not confident in answer....please guide me to correct answer

    asked by Chemistry Chick
  252. algebra

    while driving a car you realize that you only have one eighth gas remaining before you run out of gas you pull into a gas station and put is gallons of gas in your car's tank is now three fourths full how many gallons of gas does your car's tank hold show

    asked by patel
  253. Statistics

    Olive-Oil producers have expanded to approximately 120 producers statewide. Analysts estimate the average price consumers pay for a bottle of olive oil is $21, with a standard deviation of $2.40. What is the probability that the average price paid by a

    asked by Amber
  254. Math

    my 10 digit is 4 times my 100 digit. who am I?

    asked by Breyonna
  255. psychology

    why is it important to experience some stress in your life

    asked by Anonymous
  256. Algbra

    You get five packages of paper for $3.00. How much are you paying per package?

    asked by Kija
  257. algebra

    Is x=6 a solution to -2x-4=-8 I think that it is yes.

    asked by Angela
  258. Science

    What will happen to the path of a toy rocket when it's lauched.

    asked by Yna
  259. Social Studies 7R (Letter)

    Please check this letter if it's good and if there any grammar mistakes. My most exalted Monarch - Your Majesty Queen Isabella, I am writing this letter most humbly for you to consider my request for three small ships and a crew so that I may sail west and

    asked by Laruen
  260. Calculus

    The graphs of f(x) = x^3 and g(x) = 3X+5 have one intersection point. Determine the x-value for this intersection point using Newton's Method with an initial estimate of X1=2. You should use this method three times in order to obtain estimates X2, X3, and

    asked by Andres
  261. Systems Analysis, Design, and Implementation

    May anyone help me on this 1- what are the Disadvantages of Structure Analysis? 2- what are the Disadvantages of Object-Oriented Analysis? Thanks

    asked by matt
  262. physics

    One gram of water changes from liquid to solid at a constant pressure of one atmosphere and a constant temperature of 0°C. In the process, the volume changes from 0.90 cm3 to 1.10 cm3. The work done by the water is .02J, but I'm not sure how to find the

    asked by Rob
  263. Math

    Heath wants to subtract 14-9. What is the best way to decompose 9 to solve this problem? A. 4 and 5 B. 3 and 6 C. 2 and 7 D. 1 and 8

    asked by M.E.
  264. Criminal Justice

    Please point me in the right direction. What would happen if the role of the police were lessened as it applies to the theory and practice of community policing?

    asked by Penny
  265. Physics

    You have a 2.4 m high platform that is level on top. A spring launcher is located on the top so that it launches objects horizontally. You want to launch a 0.70 kg ball so that it hits at target on the ground 6.0 m away from the base. If the spring

    asked by Helppp
  266. Criminal Justice

    Please point me in the right direction. What would happen if the role of the police were lessened as it applies to the theory and practice of community policing?

    asked by Penny
  267. FINE ART 7 (PLEASE READ!!!!!)

    pictures of jacimain people earing their clothes in organge

    asked by Laruen
  268. math

    how do you write the measurement of 12x12x12 in exponential notation?

    asked by dawson
  269. math

    is there a good memorization technique for radian to unit circle coordinate?

    asked by anonymous
  270. physics

    A .1kg mass is located on the line between a 5kg mass and a 10kg mass. It is 4m to the right of the 5kg mass and 6m go the left of the 10kg mass. What is the magnitude and direction of the net force on the .1kg mass?

    asked by Jen
  271. Spelling

    The word "slippery" almost feels slippery! This may have to do with the blending of "s" and "I" so that the word glides or slips out of your mouth. Many English words seem to imitate their meaning. Try to record at least six such words. Plz help me-I

    asked by Miss Sweet
  272. Religions of the world

    Name at least two effects that organized religion has had on society and provide examples from past or present world events that illustrate your examples.

    asked by Tarsha
  273. social studies

    i to write a wellcome letter,wellcoming the new colonies to the United State and ease the fears

    asked by david
  274. English

    1. The stolen diamond necklace is insured for five million dollars. 2. I have insured the stolen diamond necklace for five million dollars. 3. I insured the stolen diamond necklace for five million dollars. 4. I insure the stolen diamond necklace for five

    asked by rfvv
  275. English

    At night, the two necklaces are kept together in the safe on the second floor. (situation: after one necklace was stolen.) (What is the active form of this passive sentence between the following?) 1. At night, I keep the two necklaces together in the safe

    asked by rfvv
  276. calculus

    Calculate dy/dx if Ln(x+y)=e^x/y

    asked by Tracy
  277. Calculus(Pre)

    What is linear speed and angular speed (In Trignometry)

    asked by Professor Calculus
  278. math

    an amount invested in an account that offers 5% interest which is compounded annually. how long will it take for this amount to double?

    asked by jen
  279. Chemistry

    CH3CH2CH2CH( a c on top of the ch and a triple bond on top of the c)CH2CH2CH2CH3

    asked by Mike
  280. Math

    Simplify: -1+9(5-3m) Solve 10=10-2m Solve: 4b

    asked by Evangeline
  281. english

    what are some background information on the Aeniad and society at the time of its popularity

    asked by anonymous
  282. physics

    a ball is thrown up vertically and caught at 9.3 sec. what is the intial velocity

    asked by Anonymous
  283. chemistry please help me

    ComPLETE THE FOLLOWING EQUALITIES 1molBa(OH)2FU=____g Ba(OH)2=____Ba(OH)2FU 1Na atom=______amu Na i don't understand how to do this ????

    asked by cathy
  284. Math

    Explain how you can estimate to tell whether 433-147=286 is reasonable.

    asked by sandra
  285. statistics

    poisson distribution: please show and solve. # of purchases in the next 24 hours.

    asked by lani
  286. College pre-algebra

    how do I simplify the following expressions and show my work? 6+5[(12 div. by2)+5]. (4div.by2)+8(5-3)to the second power. -8-72Div.by9x4to the second power + 11.

    asked by Sherrie
  287. World History

    Which Christian empire in southwest Asia did the Ottomans conquered? What was the capital of the Christian Empire in southwestern Asia that the Ottomans conquered?

    asked by Joshua
  288. Anthropology11

    What would a teacher be thinking when bullying a student with a disability?

    asked by rebecca
  289. math

    In 69 games, a player blocks 234 shots, what is his blocks per ratio?

    asked by Ethan
  290. math

    Prove these identites I really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2 +sin^2=tan^2+sin^2

    asked by Elena
  291. Calculus

    You are the owner of a delivery company with one truck. The trucks fuel economy is 1200/x miles per gallon when driving at x miles per hour (where 80 >= x

    asked by Becky
  292. english

    plural and possessive nouns. the concerns of a large animal? the whole work sheet im haveing problems with.....i need HELP!!please!

    asked by trish
  293. Chemistry

    predict whether nitrate salt solutions containing metal ions with the following outer shell electron configurations will be colored or colorless: [Ar] 3d2 and [Kr] 4d10

    asked by Colby
  294. History

    What was Alan Seeger do that made an impact during WWI?

    asked by Hannah
  295. physics

    Physics force-a bat hits a baseball and applies a force of 450 newtons to the ball.how much force does the ball exert on the bat

    asked by rudy
  296. math

    Prove these identites I really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2 +sin^2=tan^2+sin^2

    asked by Elena
  297. ENGLISH

    What are the major errors found in text book of JK BOSE "INTERACTIONS IN ENGLISH"of eight standard?

    asked by MUDASIR
  298. Social Studies

    I am supposed to answer the question by looking at a map: The railroad runs blank and blank. What do they mean?

    asked by Anonymous
  299. Psychology Please Help!!

    The entire class was in an uproar. The teaching assistant had proctored the exam while the professor was attending a conference, and the test seemed unrelated to the chapters that they had studied. The students’ complaints are based on the test’s lack

    asked by Anonymous
  300. science

    What are some ways that industry and government help solve the problem of global warming?

    asked by cindy
  301. Math

    We have this thing called MAT and we have to do a survey this week. What's your favorite type of music? Pop Hip hop Rap Rock Depressing Songs Heavy Metal

    asked by Drake
  302. microeconomics

    if the price elasticity of demand for a cup of tea is equal to 3, how would you interpret this result?

    asked by Becky
  303. math

    3 1/2+5 4/5

    asked by Anonymous
  304. Psychology Please Help!

    The testing company has hired qualified people in the field to administer the new test bank to subjects of different ages and ethnic backgrounds. They need a sizable number of scores from inner city, urban, and country/small town subjects. Their goal is to

    asked by Anonymous
  305. Math

    These animals live in a big garden : 37 snails 49 worms 12 moths

    asked by mary
  306. English

    I urgently need you to check these sentences I have to include in an e-mail. As far as the project is concerned, I would like to know the opinion of your science teacher. I hope they will help me find the proper words. 1)Thank you for your email of today.

    asked by Henry2
  307. calculus

    the graphs of f(x0=x^3 and g(x)=3x+5 have one intersection point. Determine the x-value for this intersection point using Newton's Method with an initial estimate of x1+2. You should use this method 3 times in order to obtain estimates x2, x3, and x4

    asked by No Name
  308. English

    Here is the second part of the email. 1) We plan to involve a group of 18/20 students in year 11 who are high-achievers and are willing to devote sufficient time and energy to the project. 2) By the way, is the French school or your school acting as a

    asked by Henry2
  309. Math

    Find two consecutive whole numbers such that 3/4 of the first number is 5 more than the second number.

    asked by Tyler
  310. History

    What were the three distinct arenas where the pearl harbor war was being fought? Is it Warships in the harbor; Airfields; Schofield Barracks? Of these, which was determined to be the priority region by the western Allies?

    asked by Anonymous
  311. Math

    How do you find x+3=-2 ?

    asked by Shell