Questions Asked on
March 11, 2012

  1. Chemistry Help! Thank you :)

    Assuming the final solution will be diluted to 1.00 , how much more should you add to achieve the desired pH? Information: Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.80. You have in front of you: 100 ml of

    asked by Ashley
  2. Programming

    Write a program (pseudocode) that would calculate and display the results for the multiplication table for values ranging from 1 to 100. This what I have so far: Declare X, Y, Z As Integer Write “10 x 10 Multiplication Table” For (X = 1; X

    asked by Amanda
  3. chemistry

    Ammonium bisulfide, NH2HS, forms ammonia NH3, and hydrogen sulfide, H2S through the reaction: NH4HS (s) NH3(g) + H2S(g) Kp value of .120 at 25C in a 5L flask is charged with .300g of H2S at 25C. A) What are the partial pressures of NH3 and H2S at

    asked by maura
  4. calculus

    Which of the following are antiderivatives of f(x)=sinxcosx? I f(x)=(sin^2* x)/2 II f(x)=(cos^2* x)/2 III f(x)=-cos(2x)/4

    asked by Tiffany
  5. organic chem

    when di-n butyl ether and hot concentrated naoh react----> nor rxn .. why? when di n butyl ether reacts with na metal---> nor reaction .. why?

    asked by lou
  6. accounting URGENT HELP DUE IN 1HR

    (a) Fill in the missing amounts. (If answer is zero, please enter 0. Do not leave any fields blank.) Account Titles Trial Balance Adjusted Trial Balance Dr. Cr. Dr. Cr. Accounts Receivable 34,000 Prepaid Insurance 26,000 20,000 Supplies 7,000 Accumulated

    asked by will
  7. physics

    A 5 kg block is placed near the top of a frictionless ramp, which makes an angle of 30o degrees to the horizontal. A distance d = 1.3 m away from the block is an unstretched spring with k = 3000 N/m. The block slides down the ramp and compresses the

    asked by Mel
  8. Physics

    a 1.0 N-weight is hanging at rest as shown. In each case, write in the magnitude of the unknown force. a) chain with a weight of 2.5 N has a 1.0 N hanging weight b) chain with a weight of .5 N has a 1.0 N hanging weight c) stretched elastic band with

    asked by Brandon
  9. business math

    Pete's warehouse has a market value of $5,000,000, the property in Pete's area is assessed at 40%of the market value. the tax rate is $105.10 per $1,000 of assessed value. what is Pete's property tax?

    asked by shawn
  10. English

    Which one of the following sentences demonstrates correct subject-verb agreement? A. A number of my friends have bought new cars recently B.Epena thinks five dollars are a lot of money C.Roberts friend Steve ,as well as his wife are going to the fair D.

    asked by Brenna
  11. managerial economics

    4. The equation for a demand curve has been estimated to be Q = 100 – 10P + 0.5Y where Q is quantity, P is price, and Y is income. Assume that P = 7 and Y = 50. a. Interpret the equation. b. What is price elasticity at P = 7 and arc elasticity at the

    asked by Anonymous
  12. Geometry

    Troy is thinking of a shape. He says that it has four sides and that no sides have equal length. He also says that no sides are parallel. What is the best name for his shape?

    asked by Anonymous
  13. chemistry help!!!!!

    Consider the following reaction: Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm, and that the initial partial pressure of A is 0.0

    asked by student
  14. Math

    1. You (safely) bungee jump from a 200-feet tall bridge in your town. Your distance above the water's surface depends on the time since you jumped. Sketch a reasonable graph.

    asked by Claries
  15. trig

    City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?

    asked by Janet
  16. physics

    The current indoor world record time in the 200-m race is 19.92 s, held by Frank Fredericks of Namibia (1996), while the indoor record time in the one-mile race is 228.5 s, held by Hicham El Guerrouj of Morroco (1997). (a) Find the mean speed in meters per

    asked by Darcie
  17. Chemistry

    Calculate the amount of Na2HPO4*7H2O in grams needed to make 50 mL of a 0.40 M solution. I think this is dealing with molarity but i cant figure it all out for some reason? Help would be greatly appreciated.

    asked by Bruce
  18. English

    I have completed this test and I missed 4 questions. My answers are submitted in blue, can you tell me which questions are wrong. 1.Having studied small engine repair in night school, fixing the lawn mower was easy. dangling modifier 2. When I asked for a

    asked by Robin Busch
  19. physics

    A ball with a horizontal speed of 1.25 {\rm m/s} rolls off a bench 1.00 {\rm m} above the floor. How long will it take the ball to hit the floor? How far from a point on the floor directly below the edge of the bench will the ball land?

    asked by linda
  20. physics

    A 1.1 pebble is stuck in a tread of a 0.85 diameter automobile tire, held in place by static friction that can be at most 3.9 . The car starts from rest and gradually accelerates on a straight road.How fast is the car moving when the pebble flies out of

    asked by Anonymous
  21. Physics

    Three huskies are pulling a dog sled. The mass of the driver, sled and supplies is 145 kg. Snowy is pulling with a force of 83 N and 15.5degrees to the left of forward. Buster is pulling with a force of 75 N at 9degrees right of forward and Prince is

    asked by Danielle
  22. physics

    A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 1.7 s apart. How far away did the impact occur?

    asked by me
  23. Chemistry

    After a Melting point determination, why can't you re-use the solidified substance and capllary tube for subsequent determination?

    asked by Nuke
  24. Maths

    Y is 60km away from X on a bearing of 135 degree. Z is 80km away from X on a bearing of 225 degree. (a) find the distance of Z fromY? (b) find the bearing of Z from y?

    asked by Ahmed saleh
  25. Physics 111 PLEASE HELP ASAP

    A 37.5-kg child swings in a swing supported by two chains, each 3.05 m long. The tension in each chain at the lowest point is 433 N. the force of the seat on the child is 498.5 N. b)Find the force exerted by the seat on the child at the lowest point.

    asked by lily
  26. physics

    A 1.1 kg hammer slams down on a nail at 5.0 m/s and bounces back at 1.0 m/s. If the impact lasts 1.0 ms, what average force is exerted on the nail?

    asked by Joe
  27. physics

    A physics student pulls a block of mass m = 23 kg up an incline at a slow constant velocity for a distance of d = 4 m. The incline makes an angle q = 25° with the horizontal. The coefficient of kinetic friction between the block and the inclined plane is

    asked by Mel
  28. organic chemistry

    How many steric interactions are there in CIS-1,3-dimethylcyclohexane? Which groups participate in the interactions and whats the total number of interactions of this type??? Also, if i have the steric strain value for one 1,3 H-CH3 interaction, how can i

    asked by Alex
  29. Chemistry(Can someone please answer!!)

    The decomposition of hydrogen peroxide in the presence of potassium iodide is believed to occur by the following mechanism: step 1 slow: H2O2 + I^- = H2O + OI^- step 2 fast: H2O2 + OI^- = H2O + O2 + I^- 1) What is the equation for the overall reaction? Use

    asked by Hannah
  30. microeconomic

    Suppose you consume three pounds of beef and five pounds of pork per month. The price of beef is $ 1.50 per pound, and pork is $ 2.00 per pound. Assuming you have studied economics and achieved consumer equilibrium, what is the ratio of the marginal

    asked by snizhanna
  31. microeconomics

    This week you have gone to two parties. Assume the total utility you gained from these parties is 100utils. Then you go to a third party, and your total utility rises to 110utils. What is the marginal utility of the third party attended per week? Given the

    asked by snizhanna
  32. Chemistry

    How do I calculate the amount of grams of Na2HPO4 and NaH2PO4 to prepare 200 mL of a buffer with an 8.25 pH so the sum of the concentrations of HPO4 and H2PO4 ions is 0.5 M? Does this involve writing a Ka expression and equilibrium? I am confused and

    asked by Carrie
  33. business math

    Mel's Furniture received an invoice dated September 27 for five bedroom sets at $3,000 each.The invoice indicated av trade discount of 5/8/3. The seller of the furniture prepaid the freight of $200. Terms were 2/10 EOM.Assuming Mel pays on november 2,what

    asked by shawn
  34. microeconomics

    Do you agree with the following statement? “ If you like tacos you should consume as many as you can”.

    asked by snizhanna
  35. chemistry

    How do you prepare a 0.4 M solution of sulfuric acid in water starting with concentrated sulfuric acid (18 M) and water?

    asked by Amanda
  36. First Year Chemistry

    I have a question that I don't understand from my first year chem lab. Calculate the minimum volume of water needed to decompose all the excess Ethanoic Anhydride. Recall: 1.0g of H2O = 1.0 ml of water. How do I go about doing this?

    asked by Joshua
  37. physics

    The rope of a swing is 3.2 m long. Calculate the angle from the vertical at which a 95-kg man must begin to swing in order to have the same kinetic energy at the bottom as a 1500-kg car moving at 1.07 m/s (2.39 mi/hr).

    asked by Katie
  38. chemistry

    Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 2.1 x 10-2 Ka (HX-) = 7.3 x 10-8 Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 9 x 10-5 Ka (HX-) = 5.3 x 10-11

    asked by Anonymous
  39. PHYSICS 111

    A 37.5-kg child swings in a swing supported by two chains, each 3.05 m long. The tension in each chain at the lowest point is 433 N. the force of the seat on the child is 498.5 N. b)Find the force exerted by the seat on the child at the lowest point.

    asked by lily
  40. trig

    A ship sails 40 miles SOUTH and 15 miles EAST. Find the bearing from where it began? HELP.

    asked by Chloee
  41. economic

    Does a dollar given to a rich person raise the rich person’s total utility more than a dollar given to a poor person raises the poor person’s total utility?

    asked by snizhanna
  42. chemistry

    How do you prepare a 0.4 M solution of sulfuric acid in water starting with concentrated sulfuric acid (18 M) and water?

    asked by Amanda
  43. physics

    an electric heating element is conneceted to a 110V circuit and a current of 3.2 a is flowing through the element. How much energy is used up during a period of 5 hours by the element?

    asked by kimberly
  44. U.S. History

    Explain the Civil rights Movement in the US

    asked by [Jamby]
  45. microeconomics

    Suppose your marginal utility for meals at the campus cafeteria this week has fallen to zero. Explain what has happened to your total utility curve derived from consuming these meals. Now explain what will happen to total utility if you eat more meals at

    asked by snizhanna
  46. physics

    A small object with mass 4.05 kg moves counterclockwise with constant speed 1.70 rad/s in a circle of radius 3.15 m centered at the origin. It starts at the point with position vector 3.15 m. Then it undergoes an angular displacement of 9.10 rad. (a) What

    asked by Maria
  47. calculus

    2. Let R be the region in the first quadrant bounded by the graphs of (x^2/9)+(y^2/81)=1 and 3x+y=9 . a. Set up but do not evaluate an integral representing the area of R. Express the integrand as a function of a single variable. b. Set up but do not

    asked by Taeyeon
  48. physics

    An object of mass M = 4 kg slides from rest a distance d = 2 m down a frictionless inclined plane where it encounters a spring. It compresses the spring a distance D = 1.2 m before stopping. The inclined plane makes an angle q = 20° with the horizontal.

    asked by Mel
  49. Trig Help

    Prove the following: [1+sinx]/[1+cscx]=tanx/secx =[1+sinx]/[1+1/sinx] =[1+sinx]/[(sinx+1)/sinx] =[1+sinx]*[sinx/(sinx+1)] =[sinx+sin^2x]/[sinx+1] =[sinx+(1-cos^2x)]/[sinx+1] =??? This is where I'm stuck. Can someone help me. Please check what I got is

    asked by Anonymous
  50. Chemistry

    The decomposition of hydrogen peroxide in the presence of potassium iodide is believed to occur by the following mechanism: step 1 slow: H2O2 + I^- = H2O + OI^- step 2 fast: H2O2 + OI^- = H2O + O2 + I^- 1) What is the equation for the overall reaction? Use

    asked by Hannah
  51. physics

    The National Transportation Safety Board is testing the crashworthiness of a new car. The 1.87 103 kg vehicle, moving at 11.3 m/s, is allowed to collide with a bridge abutment, being brought to rest in a time of 0.463 s. What force, assumed constant, acted

    asked by Angelica
  52. Chemistry

    How do I calculate the amount of grams of Na2HPO4 and NaH2PO4 to prepare 200 mL of a buffer with an 8.25 pH so the sum of the concentrations of HPO4 and H2PO4 ions is 0.5 M? Does this involve writing a Ka expression and equilibrium? I am confused and

    asked by Carrie
  53. Chemistry

    An example of a solution that exhibits a positive deviation from Raoult’s Law (total pressure is greater than expected) is a solution of acetone (CH3COCH3) and carbon disulfide (CS2). a) Draw Lewis structures for these molecules. Explain the deviation

    asked by Laffy Taffy
  54. physics

    Two identical planets, each of mass M, have their centers a distance D apart. Halfway between them, at gravitational equilibrium, lies a satellite of mass m. The satellite is then displaced a small distance and released, after which it undergoes SHM. a) In

    asked by sand
  55. math

    The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in metres, L, through the equation T=2π√ L/9.8 Write this equation in function notation.

    asked by james
  56. Math PLEASE HELP ME!!

    Mike receives a 9.8% raise. He currently earns $1,789.46 per month. Estimate the amount by which this monthly earnings will increase.

    asked by Madelyn Santiago
  57. Chemistry

    For the ionization of phenylacetic acid, Hc8H7O2 +H20 C8H7O2- (aq) + H3o+ (aq) Ka + 4.9x10^-5 What is the concentration of the phenylacetic ion, C8H702,- in 0.186 M phenylacetic acid, HC8H702? Please explain the steps as well..thank you so much

    asked by Ken
  58. physics

    A 50.2 kg child slides down a water slide with a velocity of 1.1 m/sec at the top. At the bottom of the slide, she is moving horizontally, 1.5 meters above the water. She splashes into the water 2.5 meters to the right of the bottom of the slide. a)

    asked by Mel
  59. Math

    Suppose that z is inversely proportional to y and that z=12 when y=16. Write an equation that expresses z in terms of y.

    asked by Anastasia
  60. math

    Each cube below is made up of smaller cubes, but the large cubes are not solid. They had tunnels through them. • The first cube originally had 27 small cubes, but the tunnel removed 3 cubes. • The second cube originally had 64 small cubes, but two

    asked by Neel
  61. Algebra

    Two companies sell software products. In 2010. Company 1 had total sales of $17.2 million. Its marketing department projects that sales will increase by $1.5 million per year for the next several years. Company 2 had total sales of $9.6 million for

    asked by kim
  62. Physics

    HELP! A tennis ball is attached to a .8m long string whirled around in a circle with a constant frequency of 1.2 Hz. What is the linear(tangential) velocity of the tennis ball?

    asked by Phil
  63. physics

    Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. When t = 1.6 s, the angular velocity of the wheel is 5.5 rad/s. The acceleration continues until t = 17 s, when the acceleration abruptly changes to 0 rad/s2. Through what

    asked by Katie
  64. Physical science

    A copper penny has a mass of of 3gram. The atomic number of copper is 29 and the atomic mass is 63,5gram/mol.what is the total charge of all electrons in the penny?

    asked by Lucia
  65. physics

    A small block of mass m = 1.1 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 56.0 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the point A

    asked by Katie
  66. principles of business

    Assignment Choose a company that has experienced negative press recently about its financial dealings. Provide a financial summary of your selected company’s financial health, including a timeline of possible financial gains and losses. Define 2

    asked by sarah
  67. trig

    City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?

    asked by Janet
  68. calculus

    the productivity of a country in western Europe is given by the function f(x,y)=40x^4/5 y^1/5 when x units of labor and y units of capital are used. a)What is the marginal productivity of labor and the marginal productivity of capital when the amounts

    asked by yessi
  69. Biology Question

    I have 2 problems/questions I am unsure of the answers. The first one is "how would you demonstrate the Valsalve maneuver using the model lung?" and 2. If a woman is breathing rapidly and deeply after exercise, would TLC, RV, TV, IRV, and ERV stay the

    asked by Mary
  70. CALC

    f(x)=x^3-3x^2-3x-8/(-3x^2-4x-6) Find the equation of the non-vertical asymptote. What is the smallest value of x at which f(x) intersects its non-vertical asymptote? the non vertical asymptote is -1/3x + 13/9 i found that using synthetic division and i

    asked by UCI
  71. physics

    A 190-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 32.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.876, and the log has an

    asked by Natasha
  72. science

    How do I find oxidation numbers of certain elements in compounds? I'm really confused so very simple terms would be appreciated. EX: What is the oxidation number of sodium in NaOH AND What is the oxidation number of Iron in FeCl3??

    asked by Viola
  73. Physics

    Dry saturated steam at 100'C is passed into 250gm of a mixture of ice and water contained in a calorimeter of thermal capacity 45J/K.When all the ice has just melted,the mass of the content of the calorimeter has increased by 10gm due to condensed

    asked by O.E Olaleye
  74. AP Chem

    Calculate the correct volumes of the 0.1M acetic acid solution and the 0.1M sodium acetate solution needed to make 50mL of a buffer solution with a pH vaule of 5.00. (Ka = 1.8x10^-5)

    asked by Keighley
  75. math

    Why f(x) and g(x) do not cut the x-axis at the same number of points. Why h(x) does not cut the x-axis. Why do all cut the y-axis at one point only.

    asked by Kwena
  76. Calculus

    I have no idea what to do with this problem. Please help me found the basic formula. When Apollo 15 astronaut David Scott dropped a hammer and a feather on the moon to demonstrate that in a vacuum all bodies fall with the same constant acceleration, he

    asked by Mathew
  77. English - please help i had posted 3 times and no

    please can you make correction in my short story. i am very bad at grammar and even my parents does not khnow english well. can you proof reed my short story. Love-Hate story “Happy birthday Khushi”, her family said as they came to her room at

    asked by Annie
  78. Chemistry

    An ideal gas originally at 0.8 atm and 77C was allowed to expand untel its final volume ,pressure and temperature were 600 ml ,0.4 atm and 27C.what was the initial volume

    asked by faisal
  79. physics

    A cyclist starts from point X and rides 3 km due west to point Y. At Y he changes direction and rides 5km north-west to point Z. (a) hw far is he from the starting point, correct to the nearest km? Find the bearing of the Z frm X to the nearest degree?

    asked by Anonymous
  80. math

    Jodie bicycles 6 km/h faster than Javier. In the same time it takes Javier to bicycle 42km, Jodie can bicycle 60 km. How fast is each bicyclist traveling?

    asked by Terry
  81. Physics

    A parallel-plate capacitor has a capacitance of 2.1 µF with air between the plates. The capacitor is connected to a 24 V battery and charged. The battery is then removed. When a dielectric is placed between the plates, a potential difference of 2.8 V is

    asked by Tor
  82. Finance

    Edwards Construction currently has debt outstandind with a market value of $70,000 and a cost of 8%. The company has EBIT of $5,600 that is expected to continue in perpetuity. Assume there are no taxes. What is the value of the company's equity? What is

    asked by Wilbert
  83. physics

    A rocket carrying a satellite is accelerating straight up from the earth's surface. At 1.20 after liftoff, the rocket clears the top of its launch platform, 68 above the ground. After an additional 4.85 , it is 1.50 above the ground.Calculate the magnitude

    asked by Muhammad
  84. physics

    Traveling at a speed of 18.5 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.690. What is the speed of the automobile after 1.41 s have elapsed?

    asked by Natasha
  85. Calculus

    AM having problems understanding what equations to use for this word problem. Please help. A rectangular storage container with an open top is to have a volume of 48ft^3. The length of its base is twice the width. Material for the base costs $8 per square

    asked by Gaby
  86. Chemistry

    Draw a titration curce of 25.0 mL of 0.100 M aluminum ion (pKa=5.14) with 0.100 M NaOH. I am familiar with the process of drawing titration curves, however, I have never done an example with an ion (aluminum ion) rather than an actual acid. If anyone can

    asked by Anna
  87. calculus

    Determine whether the statement is true or false. If it is true, explain why it is true. If it is false, give an example to show why it is false. a- if f is a function of x and y and a is a real number, then f(ax, ay)= af(x,y). b- if fx(a,b) < 0, then f is

    asked by help please.
  88. business

    Assignment Choose a company that has experienced negative press recently about its financial dealings. Provide a financial summary of your selected company’s financial health, including a timeline of possible financial gains and losses. Define 2

    asked by sarah
  89. Chemistry

    Determine the atomic weight of X in the following compounds a)8g XH4 occupy 44.8L volume at 237C and 380 mmHg pressure b)1.92g of X3 occupis a volume of 574 ml at 77C and 2 atm c)A O.326 gram of gas,C3X4 has a volume of 250 ml at100C and 76 cmHg d)A 3.12

    asked by faisal
  90. Chemistry

    A gas occupied 870 ml under a pressure of 720 mmHg at a temperature of 17C ,the next day it was measured under a pressure 0f 750 mmHg at a temperature of 21C.what volume did the gas occupy under these condition

    asked by faisal
  91. Chemistry

    How many mL of concentrated HCl (aq) (36.0% HCl by mass, d=1.18 g/mL are required to produce 5.00 L of a solution with a pH =2.10?

    asked by Maddie10
  92. calculus

    a)find the first partial derivatives of f(x y)= x √1+y^2 b)find the first partial derivatives of f(x,y)= e^x ln y at the point (0,e)

    asked by maria
  93. chemistry

    3. Find the empirical formula for a compound that consists of aluminum and chlorine in which the aluminum is 20.2 % by mass. 4. A sample contains 71.65% CL, 24.27% C nad 4.07% H. the molecular weight is known to be 98.96 g/mol. What are the empirical and

    asked by jhong
  94. math

    What inverse operation is needed for the first step in solving the equation 12+5x=22? a. addition b. subtraction c> multiplication d. division

    asked by peter
  95. Chemistry

    Consider a solution containing 0.150 M Ba(OH)2. Calulate the pH.

    asked by Anonymous
  96. Physics

    A space probe is traveling in outer space with a momentum that has a magnitude of 7.5e7 Kg*m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 2.0e6N and a direction opposite to the probe's motion. It

    asked by Natasha
  97. Math(Can someone please answer!!)

    n [1.70E-2] = ln(0.144) - (k s-1)(3609 s) Solve for k. I have a TI30 calculator. Am I suppose to press just the ln button or do I have to press 2nd and then ln??

    asked by Hannah
  98. Math

    x^3-6x^2+17x Find the point of inflection of the graph of the function? x,y ( , ) I tried to solve for it by getting the 1st derivative and setting it equal to 0 but i get sqrt,so am confused!

    asked by Angelina
  99. physics

    An automobile tire has a radius of 0.455 m, and its center moves forward with a linear speed of v = 15.7 m/s. Determine the angular speed of the wheel.

    asked by Katie
  100. Lost in the pits of ALG

    I have 5 problems I seem to not be able to comprehend out of 150 that are due Tuesday. I have tried every which way to solve them on my own..please help. Find the variation constant in which y varies inversely as x, and the following condition exists. Y=30

    asked by TOTALLY lost
  101. math

    sasha has 5 red pens and 4 blue pens in her bag. she will randomly pick one pen, keep it, and then randomly pick a second pen. What is the probability that she will pick two blue pens

    asked by geoffrey
  102. English

    I really need to know if everything is correct in my last post. I hope someone can check it. Thank you very much, Damon. Here are a few more sentences I need to check.In particular, a need to know which word choices are possible. 1) O’Brien even

    asked by Henry
  103. Chemistry

    How many mL of 5.5 M KOH are needed to prepare 300 mL of 1.2 M NaOH?

    asked by Amanda
  104. CHEMISTRY

    How many grams of dry need to be added to 1.90 of a 0.800 solution of ammonia, , to prepare a buffer solution that has a of 9.00? Kb for ammonia is 1.8*10^-5.

    asked by Abinaya
  105. Math

    ln [1.70E-2] = ln(0.144) - (k s-1)(3609 s) Solve for k. I have a TI30 calculator. Am I suppose to press just the ln button or do I have to press 2nd and then ln??

    asked by Hannah
  106. maths

    simplify 48x(14+x)=16(x+14)

    asked by Anonymous
  107. calculus: related rates

    hello, please help me. A cylindrical can is being heated with its height increasing at the rate of 0.01cm/min and its diameter at the rate of 0.005cm/min. At what rate is the volume increasing when the can has a diameter of 15cm and a height of 20cm. this

    asked by mary
  108. ALGEBRA

    An alligators tail length,T varies directly from its body length B. So an alligator with a body length of 7.7 feet has a tail length of 6.3 feet. What is the tail length of an alligator whose body length is 4.4 feet? Thanks ahead of time.

    asked by TOTALLY lost
  109. World geography

    Imagine you are a farmer in an area that has monsoons. What would you need to do to adjust your crops or your farming techniques to account for this massive rainfall? How can you protect your crops during the dry winter months?

    asked by Pam
  110. calc

    f(x)=[5x^3-4x^2-8x+9]/[2x^2-1x-3] Find the equation of the non-vertical asymptote. y = Does f(x) intersect its non-vertical asymptote? (yes or no) What is the smallest value of x at which f(x) intersects its non-vertical asymptote? ( Enter No in the

    asked by jasmineT
  111. physics

    A small block of mass m = 1.1 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 56.0 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the point A

    asked by Katie
  112. math

    sasha has 5 red pens and 4 blue pens in her bag. she will randomly pick one pen, keep it, and then randomly pick a second pen. What is the probability that she will pick two blue pens

    asked by geoffrey
  113. trig

    City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?

    asked by Janet
  114. life orientation

    What is media

    asked by truly
  115. chemistry

    what has the strongest bond? a) C2H6, C2H4, C2H2 b) Cl2, O2, N2 c) H2, Cl2

    asked by hadley
  116. Physics

    The electric field between the plates of a paper-separated (K = 3.75) capacitor is 9.01X10^4 V/m. The plates are 1.95 mm apart and the charge on each plate is 0.775 µC. I figured out that the capacitance is 4.4e-9F but I need help finding the area.

    asked by Millie
  117. Biology

    Why does the pCO2 value increase during hypoventilation? If hypoventilation causes shortness of breath, would that not increase the CO2 concentration, therefore decreasing pCO2? What am I understanding incorrectly?

    asked by Bobby
  118. math

    Melinda discovered that she took 26 heel-to-toe steps to walk in a straight line from the center of her circular garden to any point on the outer edge of the garden. How many heel-to-toe steps is the diameter of Melinda's garden?

    asked by gary
  119. Chemistry

    My chemistry teacher said that the pCO2 value increases during hypoventilation. Why is that? If hypoventilation causes shortness of breath, would that not increase the CO2 concentration, therefore decreasing pCO2? Because if you think about pH, a larger H

    asked by Bobby
  120. physics

    Consider a system of N identical particles. Each particle has two energy levels: a ground state with energy 0, and an upper level with energy . The upper level is four-fold degenerate (i.e., there are four excited states with the same energy ). (a) Write

    asked by martin
  121. Math

    Express the following number in scientific notation: 23^941 How do i get the answer for this? on my graphing calc, i get an error overflow messasge when i try to compute it. THANK YOU!!!!!

    asked by Sandy
  122. Calc

    f(x)=x^3-3x^2-3x-8/(-3x^2-4x-6) Find the equation of the non-vertical asymptote. What is the smallest value of x at which f(x) intersects its non-vertical asymptote?

    asked by Elli
  123. US History

    Why did many progressives of both major parties saw American entry into World War I as a peerless opportunity? Many Progressives during the First World War, Republican and Democrat alike, realized something of great importance to furthering their goals:

    asked by Jason
  124. Math

    29 * 6^(-3x) = 13 Thanks!

    asked by Will
  125. physics

    An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.11 x 105 m/s to a final velocity of 1.67 x 106 m/s while traveling a distance of

    asked by Natasha
  126. Physics

    A space explorer is 4.6 billion km away from a certain star, and observes that the gravitational force of attraction exerted on the spacecraft by the star is 500 N. What will the force become when the craft has approached to a position 2 billion km from

    asked by Steve
  127. english

    is this a good thesis for and english research paper? With so many illegal drugs and alcohol cigarettes seem to be the only drug that is not illegal but kills more people each year who smoke.

    asked by westwood
  128. calculus

    Find the area of the region bounded by the graph of y^3=x^3 and the chord joining the points (-1, 1) and (8,

    asked by Taeyeon
  129. algebra

    a ladder is leaning up against a wall. The ladder is 8 feet long and is 3 feet away from the base of the wall. find the angle the ladder makes with the wall.

    asked by abby
  130. HCS/490

    Identify two key health care-related challenges to this population such as increaes in health care costs, increases in presvription drug costs or the need for in-home medical care,

    asked by Inez Williams
  131. English

    I need help writing a thesis sentence for an analytical essay about Romeo and Juliet. The topic the teacher chose is "Romeo and Juliet face untimely deaths because they act recklessly and hastily. thanks!

    asked by Nicole
  132. Biology

    can anyone send me a website link to a Monocot and Dicot Leaf and Stem cells under a microscope? (not cross section) Also, do they both have a cell nucleus?

    asked by CrissyXD
  133. Pre-Calculus Help, thanks:)

    Find the domain of f(x) = 1/ (square root 2x^2-7x-15) I tried setting 2x^2-7x-15 greater or equal to zero but I don't know where to go from there to solve for my domain. Help please!:)

    asked by L.Bianchessi
  134. Calculus; Limits

    The percentage of research articles in a prominent journal written by researchers in the United States can be modeled by A(t) = 26 + (36/1 + 0.8(0.8)^−t'), where t is time in years (t = 0 represents 1983). Numerically estimate lim as t→+infinity A(t).

    asked by James
  135. Business

    One of your relatives has come into a significant amount of money recently, and wants to invest $100,000 dollars in a stock which is listed either on the New York Stock Exchange (NYSE) or the NASDAQ. This relative has asked you to recommend three stocks,

    asked by Chase
  136. Astronomy

    you are 100,000 feet above planet B and the ground range to your horizon point is 400 miles. What is the radius of planet B?

    asked by Anonymous
  137. Management

    When Nike yielded to pressure from uman rights groups and agreed to close its manufacturing plants located in developing nations,they were acting as (a) proactive, (b) accommodative, (c) defensive, or (d) environmental managers. I chose (c) for my answer.

    asked by Carol
  138. calc

    f(x)=[5x^3-4x^2-8x+9]/[2x^2-1x-3] Find the equation of the non-vertical asymptote. y = Does f(x) intersect its non-vertical asymptote? (yes or no) What is the smallest value of x at which f(x) intersects its non-vertical asymptote? ( Enter No in the

    asked by jasmineT
  139. physics

    A constant force of 40.7 N, directed at 29.9° from horizontal, pulls a mass of 13.7 kg horizontally a distance of 2.93 m. Calculate the work done by the force.

    asked by Katie
  140. chemistry

    If you have 2 moles of glucose in 8 liters of solution, what is the molarfity of this sol;ution?

    asked by idk
  141. math

    can you check these write the decimal as a percent for 0.5 i wrote: 500% write the fration as a percent round to the nearest tenth should this be; 576%

    asked by marko
  142. Lab Math-Osmolarity

    I know this is easy but it's been a while for me. Calculate the osmolarity of the following: -25mM CaCl2 -100mg/dl Glucose -0.20 M MgSo4 which is 50% dissociated Thank you!!!

    asked by Morgan M
  143. PH103

    A good way to establish a conclusion as true, or probable, is to A)insist that you are correct. b)construct a strong argument. c)construct a fallacious argument. d)ignore any objections to your conclusion I think it is b, can you help me to be sure.

    asked by Ashley
  144. Chemistry

    calculate the specific rate constant A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×10^−6 3.0 ×10^−2 3.0 7.30×10^−5

    asked by Kelly
  145. chemistry

    solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

    asked by faith
  146. business math

    Jeff Sellers bought 200 shares of radio shack stock at $22.35. eight months later,he sold the stock at $31.76.assuming a 2% commission charge, what is the bottom line for Jeff?

    asked by shawn
  147. Algebra

    The life expectancies for men and women in the United States can be approximated by the following formulas: Women: E= 0.126t+76.74 Men: E=0.169t+69.11 where E represents the length of life in years and t represents the year of birth,measured as number of

    asked by kim
  148. PHi103

    Karl Popper advocates, as a more efficient way to examine a scientific hypothesis, which of the following I believe it could be A Gather as much data as possible supporting the hypothesis

    asked by Ashley
  149. chemistry

    a 12.0g sample of carbohydrate contain 4.50g of carbon, 3.25g of oxygen, and some hydrogen. Determine the percent by mass of hydrogen in your product

    asked by jhong
  150. Chemistry

    My chemistry teacher said that the pCO2 value increases during hypoventilation. Why is that? If hypoventilation causes shortness of breath, would that not increase the CO2 concentration, therefore decreasing pCO2? Because if you think about pH, a larger H

    asked by Bobby
  151. CHEMISTRY HELP NEEDED!!

    Given info: Reaction: 3A+2B--->2C+D {A] (mol/L) 1.0 ×10^-2 1.0 ×10^−2 2.0 ×10^−2 2.0 ×10^−2 3.0 ×10^−2 [B] (mol/L) 1.0 3.0 3.0 1.0 3.0 Rate of appearance of C (mol/L-hr) 0.30×10^−6 8.10×10^−6 3.24×10^−5 1.20×10^−6 7.30×10^−5

    asked by Kelly
  152. astronomy

    Suppose Mercury's rotation period were three-quarters of its orbital period. How many Mercury days would ther be in a Mercury year?

    asked by Linda
  153. astonomy

    If 100 asteriods, each of diameter of 100 km, were combined into a single object, approximately what would its diameter be?

    asked by Andrea
  154. science-Help!

    What does it mean in the scientific method that the second step is research? I need to write up the 5 steps of scientific method explaining my experiment-how do i do research?

    asked by Jonathan
  155. Chemistry

    3.54*10^7 g of TiCl4(g) are reacted completely. If 7.91*10^6 g of Ti(s) is actually obtained, calculate the percent yield.

    asked by Nikki
  156. Physics

    During a storm, a tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle between two fence posts. The limb exerts a downward force of 283 N on the wire. The left section of the wire makes an angle of 11.8°

    asked by Natasha
  157. Spanish

    I had to answer the questions in the negative please check 1.Hay alguien en la puerta? No, no hay nadie en la puerta. 2. Hay algo en la mesa? No, no hay nada en la mesa.

    asked by Tiffany
  158. math

    john has a 25 gallon fish tank. John filled his fish tank today with 24 gallons of water. the water evaporates at a rate of 1.5 gallons per week week. John adds 2 gallons to the tank every other week. At which of the following times will the tank contain

    asked by Tom
  159. math

    Find the LCM of (7+5t),(49-25t^2), and (7t-5t)

    asked by Terry
  160. social statistic

    what is the z-score for a raw score if 89?

    asked by dee
  161. alg2trig

    2(3y-4)^(3/5)-4=50

    asked by alice
  162. HCS/490

    Describe the general impact that changing demographics may have on the health care market

    asked by Inez Williams
  163. Physics-is this correct?

    Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at -3 C. How much energy would the lake need to absorb from the Sun to cause it to evaporate completely? Each gram of water will

    asked by Tracy
  164. Physics-Is this correct?

    A cylinder contains 0.1 cubic meters of gas at atmospheric pressure. This gas is allowed to expand until its pressure drops to 7800 Pa. What is the gas volume after this expansion has taken place? answer: 7800/10130 = 0.770

    asked by Tracy
  165. maths

    simplify 48x(14+x)=16

    asked by Anonymous
  166. social studies

    I need help in evaluating 2nd grade social studies standards according to Arizona Academic standards.

    asked by stephanie
  167. Physics

    A spring and block is set up on frictionless tabletop. The 30N/m spring is compressed 16 centimeters and released. What is the maximum speed the 2.0 kilogram block will reach?

    asked by Tracy
  168. Physics

    A bus started out going 20 miles per hour on the highway. One hour later it drove 40 miles per hour on the freeway. How long did it take to go 140 miles? Is the correct answer 3.5 minutes.

    asked by Anonymous
  169. math

    Mariah is planting a rectangular rose garden. In the center of the garden, she puts a smaller retangular patch of grass. The grass is 2 ft by 3 ft. What is the area of the rose garden?

    asked by Austin
  170. Trigonometry

    Your altitude is 40,000 feet and you detect a target at a depression angle of 6 degrees and a range of 20 miles. what is the altitude of the target? Draw a picture.

    asked by Diana
  171. trigonometry

    If a planet has a semimajor axis of 2 AU (astronomical units) a) what would the semimajor axis of a superior planet be if the angle of greatest elongation for the inferior planet is 20 degrees as viewed from the superior planet? b) assuming a day on the

    asked by rachel
  172. ALG WORD PROBLEM

    The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 9 amperes when the resistance is 940 ohms. What is the current when the resistance is 580 ohms? Thank you yet again. Almost through with this

    asked by TOTALLY lost
  173. linguistics

    why is there a length difference between the word "house" in 'greenhouse' and 'green house' when you say the word? I know it takes longer to say 'house' in "green house" but why does it take longer? please help me. I am so confused :(

    asked by Mitch
  174. physics

    John Johnson set a world record for the "100.0" m run with a time of 9.86 s. If, after crossing the finish line, John walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0m?

    asked by rachel
  175. physics

    John Johnson set a world record for the "100.0" m run with a time of 9.86 s. If, after crossing the finish line, John walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0m?

    asked by rachel
  176. physics

    is there any gravitational force existent between charged objects?

    asked by kiba
  177. Calc 2

    The region bounded by y= 1/(x^2+2x+5), y=0, x=0, and x=1, is revolved about the x-axis. Find the volume of the resulting solid.

    asked by Mo
  178. maths

    how to construct a parallelogram in which diagonal ac=7.2cm,bd=5cm and also angle between the diagonals is 30 degree?

    asked by ashwini
  179. quantitative decision making

    james and john invested ¥700 and ¥300 respectively, at the end the of one year, they divided their profits such that a third of the profit is divided equally for the efforts they have put into the business and the remaining amount of profit is divided in

    asked by philip
  180. maths

    Given the equation of an ellipse as 5x^2+3y^2-15=0 find the centre and foci

    asked by salome
  181. biology

    If you have the option to save from extinction either the carnivores oor the primary produccers in an ecosystem which whould you protect? why

    asked by Rose
  182. college math

    1). Sum of three numbers is 45. One number is five more than the second number.It is also twice the third.Find the numbers. 2).Perimeter of quadrilateral is 52in. Longest side is is three times as long as the shortest side. The other two sides are equally

    asked by micah
  183. calculus

    given the circle x^2+y^2+2x-2y-14=0, find it's intersection with the y-axis. please help me....

    asked by alyssa
  184. Math

    48 is 88% of what number

    asked by Marie
  185. trig or geom

    i have to use pythagorean theorem to find the leg-measure of x. in the formula, x would be a^2. the hypotenuse is 11 and "b" is unknown. there is also a cosine with a measure of .4 at the top-most angle.. what is x? i don't know how to use cosine with the

    asked by starlight18
  186. Calculus

    Estimate the area under the curve f(x)=x^2 between x=0 and x=1 using 4 rectangles of equal width if a) The height is taken from the right endpoint b) The height is taken from the midpoint. I have no idea what exactly this question is asking me to do is

    asked by Enrique
  187. English

    Thank you very, very much Ms. Sue. We left out just a few more LAST sentences, I'm really unsure of. I did some corrections myself. Can you please check them? 1) Big Brother is a symbol of open threat towards the enemy of the Party. Better: he is a threat

    asked by Henry
  188. quantitative decision making

    james and john invested ¥700 and ¥300 respectively, at the end the of one year, they divided their profits such that a third of the profit is divided equally for the efforts they have put into the business and the remaining amount of profit is divided in

    asked by philip
  189. foreign language

    how do you say head in spanish

    asked by Xzavier
  190. math

    Find the coordinates of the x-intercept. 2x + y = -6

    asked by Tony
  191. chemistry

    solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

    asked by faith
  192. chemistry

    solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

    asked by faith
  193. Life Orientation

    3 checks and balances that are in place in South Africa that control and regulate media

    asked by Damien
  194. Chemistry

    calculate the specific rate constant A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×10^−6 3.0 ×10^−2 3.0 7.30×10^−5

    asked by Kelly
  195. Chemistry

    calculate the specific rate constant A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×10^−6 3.0 ×10^−2 3.0 7.30×10^−5

    asked by Kelly
  196. sociology

    Explain the three steps for measuring a variable.

    asked by Aaron
  197. biology

    If you have the option to save from extinction either the carnivores oor the primary produccers in an ecosystem which whould you protect? why

    asked by Rose
  198. trig

    If sec theta = radical 5, what is the exact value of cos theta

    asked by Dan
  199. trig

    If sec theta = radical 5, what is the exact value of cos theta

    asked by Dan
  200. Social Studies / History

    What Segments Of U.S Society Were Affected By The Institution Of Selective Service System ?

    asked by Remy
  201. chemistry

    under rate of reactions Fe^2+ + Cr2o7^2- » Cr^3+ +Fe^3+

    asked by faith
  202. Math problem

    having problems working this problem out please solve 49 5/2

    asked by Lavern
  203. MATH...YUCK!!!H8 IT

    IM DOING A PROJECT FOR SCHOOL AND CAN"T FIND THE ANSWER.... WHY IS Pi so important?

    asked by JESSICA
  204. art

    character in the production is an evil old man who want to take over the world write a character sketch forthis character

    asked by karabelo kepadisa
  205. business

    outline the role team work or team building can play in the business planning process?

    asked by student
  206. calculus

    find the domain of the function f (x,y) = e^-xy

    asked by maria
  207. math

    Xenia wants to stuff a cube-shaped footstool that measures 10.25 inches on all edges. What is a good estimate of the number of cubic inches of foam peanuts that she will need? a. just over 1,331 cubic inches b. just over 1,000 cubic inches c. just over 30

    asked by peter
  208. math

    Image that the last U.S. census indicated that there is a major shift in our population where the northwest states are decreasing in population and the southwest states are increasing in population by more than 3 million. Discuss how this might affect the

    asked by d's
  209. TO MS.SUE, WRITEACHER,VANESSA, MARTHA,OR ANYONE

    CAN YOU HELP ME STUDY FOR THE PSSA.

    asked by Celest
  210. calculus

    the monthly payment that amortizes a loan of A dollars in t yr when the interest rate is r per year, compounded monthly, is given by P=f(A,r,t) = Ar/ 12[1-(1+ r/12)^-12t ] Find the monthly payment for a home mortgage of 300,000 that will be amortized over

    asked by yessi
  211. algebra

    x/8+1/6=-1/10

    asked by Anonymous
  212. calculus

    The efficiency of an internal combustion engine is given by E= (1-v/V)^0.4 Where V and v are the respective maximum and minimum volumes of air in each cylinder. a) Show that ∂E/ ∂V > 0 and interpret your result b) Show that ∂E/ ∂v < 0 and interpret

    asked by help
  213. Physics

    A person heats a can of soup on a stove. If he does 250 Joules of work ON the soup by stirring it as the burner adds 1675 Joules of heat, what is the change in its internal enegry? I did 250- 1675 because the work done On something is negative. can you

    asked by angela
  214. Chemistry

    Given info: A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×10^−6 3.0 ×10^−2 3.0 7.30×10^−5 Reaction: 3A+2B--->2C+D

    asked by Kelly
  215. Math PLEASE HELP ME!!

    What is 14% of 120?? PLEASE SHOW ALL WORK, THANK YOU!!!

    asked by Madelyn Santiago
  216. English

    I still need to check this rephrase I once wrote on !@#$%^&ens' Hard Times. Thank you. 1) Sissy says that her father works with horses in a circus. He belongs to the the horse-riding,that is to the world of imagination Mr. Grandgrind totally rejects. 2)

    asked by Henry
  217. American History

    In the southern campaign launched by the British, Cornwallis lost a battle with the Americans under Nathaniel Greene at

    asked by Anonymous
  218. Business

    As a growing number of producers pursue multichannel distribution, they could probably learn some lessons from the masters at the game—the big soda companies. Think of all the places in your community where you can purchase a Coke or a Pepsi. How is the

    asked by Chase
  219. math

    there are 7 identical spheres each colored on the inside with one color in more than 4 of them. When 2 spheres of the same color touch each other they both glow in color. Using as few comparisons as possible, find a single spehere that has the majority

    asked by juliann
  220. math problems

    If you cut a pizza into 45 degree wedges meeting at a point other than the center and two people eat alternative slices, do they each get the same amount?

    asked by juliann
  221. math

    In a clinical trial, a drug used to reduce blood pressure caused side effects in 6% of the patients who took it. For a new rial, two patients were selected at random. Find the probability that both the patients had side effects.

    asked by ally
  222. Chemistry

    Calculte the amount BTU that would be lost to cool 587lbs of water from 87 degrees F to 49 degrees F.

    asked by Rohan
  223. Math

    I asked this question before sorry I I shouldn't ask it again. Express the following number in scientific notation: 23^941 How do i get the answer for this? on my graphing calc, i get an error overflow messasge when i try to compute it. what is the decimal

    asked by Sandy
  224. english

    what are some connotations of Hawaii?

    asked by loren
  225. English

    Ms Sue or Damon, as Writeacher is on vacation, I really hope you can check my today's post. I still have a few other sentences.It is extremely urgent!!! 1) To be honest, I had never heard of Derek Landy, but I found out, to my surprise, that he is a

    asked by Henry
  226. communication

    Which of the following is NOT true of nonverbal communication? A.It is continuous. B.It uses a single channel. C.It usually can be controlled. D. It is unstructured and follows few rules. I think it is A. But not to sure

    asked by Anonymous
  227. calculus

    2. Sketch the region in the first quadrant that is bounded by the graphs of y=x^3, y=4X , and 2x+y-3=0 that lies below both straight lines. Find the area of this region. I can see the graph in front of me. which function do I subtract from which?

    asked by Taeyeon
  228. Life orintion

    Explain three checks and balances that are in place south africa that control and regulate madia

    asked by Elie
  229. Math need help

    y= sqrt(81-x^2) What length and width should the rectangle have so that its area is a maximum? (smaller value) (larger value) I have no clue how to do this, so if someone could please help! thank you

    asked by Angelina
  230. Life orintion

    Explain three checks and balances that are in place south africa that control and regulate madia

    asked by Elie
  231. Physics-is this correct?

    A person heats up a can of soup on a stove. If he does 250 joules of work on the soup by stirring it as the burner adds 1675 joules of heat, what is the change in its internal energy? I took 1675j - 250 j = 1425j

    asked by Tracy
  232. astronomy

    Suppose that the gravitational time dilation on the surface of a star is 1.1. What would be the escape velocity from the star?

    asked by Andrea
  233. Math

    adam has 2 yards of fabric to make a shirt. He needs 1 foot of fabric for each arm and 3 feet of fabric for the rest of the shirt. Does he need an estimate or exact answer to decide if he has enough fabric?

    asked by Dana
  234. A&P II

    I have 2 problems/questions I am unsure of the answers. The first one is "how would you demonstrate the Valsalve maneuver using the model lung?" and 2. If a woman is breathing rapidly and deeply after exercise, would TLC, RV, TV, IRV, and ERV stay the

    asked by Mary
  235. science

    How do I find oxidation numbers of certain elements in compounds? I'm really confused so very simple terms would be appreciated. EX: What is the oxidation number of sodium in NaOH???

    asked by Viola
  236. calculus

    Find the area of the region bounded by the graph of y^3=x^3 and the chord joining the points (-1, 1) and (8,4)

    asked by Tiffany
  237. sociology

    Explain the three steps for measuring a variable.

    asked by Aaron
  238. Chemistry

    What is another way to test for hydrogen and oxygen; other than the burning splint test? My teacher gave us the hint of- Universal Indicator

    asked by Julie
  239. Pre-Calculus

    A town has a population which is growing linearly. In 1970 its population was 36,000 while in 1985 its population was 63,000. Find a formula for its population P(t), where t=0 corresponds to the year 1970.

    asked by L.Bianchessi
  240. Pre-Calculus

    Find the maximum value, and where it occurs for eAch function. G(x)= (square root -x^2+4x+12)

    asked by L.Bianchessi
  241. math

    Transform the equation by completing the square: 4x^2 + y^2 - 8x + 6y -3 =0

    asked by Boby
  242. Physics

    Use the first law of thermodynamics to determine the amount of heat change, Q, and whther it was added to or removd from the system. W=225J Delta U=600J Q=?

    asked by Tracy
  243. Environmental Science

    David Hassenzahl discusses the relative risks of eating peanut butter contaminated with aflatoxin and apple juice contaminated with UDMH, a degradation product of Alar, in the Power Point presentation in the Week Five, Module 5 Conference. The following

    asked by brianna love
  244. Physics

    A bus started out going 20 miles per hour on the highway. One hour later it drove 40 miles per hour on the freeway. How long did it take to go 140 miles? Is the correct answer 3.5 minutes.

    asked by Anonymous
  245. Physics

    A bus started out going 20 miles per hour on the highway. One hour later it drove 40 miles per hour on the freeway. How long did it take to go 140 miles? Is the correct answer 3.5 minutes.

    asked by Anonymous
  246. biology

    A medical microbiological lab report indicates that a sample contained a biofilm, and that one species in the biofilm was identified as Neisseria gonorrhoeae. Is this strain of Neisseria likely to be pathogenic? Why and why not?

    asked by Anonymous
  247. Math

    Find the discriminant. Tell which conic section the graph will be. 3x^2 + 12 xy + 9y^2 + 7x -2y - 100

    asked by Drew
  248. algebra

    The Environmental Protection Agency (EPA) monitors air quality in U.S. cities. The function f gives the annual number of days with unhealthy air quality in Los Angeles, California, for selected years. X: 1995 1997 1999 2000 2003 f(x):113 60 56 87 88 (a)

    asked by mike
  249. Business

    Is it possible for companies both to maximize financial value for shareholders and to act responsibly in the communities in which they operate, to treat their employees, customers, and suppliers well, and to engage in activities that are good for the

    asked by Chase
  250. Business

    Imagine you are the owner of a growing technology or service company with a healthy cash flow but little in the way of property and equipment. Develop a strategy for meeting your short-term financing needs to acquire needed property and equipment.

    asked by Chase
  251. chemistry

    what is the wave lenghth of the alpha particle Po which has velocity of 15x10 to the power 6 ms-1

    asked by Anonymous
  252. Life orientation

    What are the checks and balances that are in place in south africa that control and regulate media

    asked by Thato
  253. Chemistry

    Boron Phosphide, BP, is a semiconductor, and a hard, abrasion resistant material. It is made by reacting Boron tribromide and phosphorus tribromide in a hydrogen atmosphere at high temperature (>750 degrees C) (a) Write a Balanced chemical equation for the

    asked by Laffy Taffy
  254. chemistry

    Phenylalanyl aspartate, Nutrasweet, is an artificial sweetener used in many diet drinks. If a solution prepared by dissolving 6.068 mg of Nutrasweet in 125 milliliters of water exhibited an osmotic pressure at 25ºC of 3.23 mm Hg, what is the molar mass of

    asked by Laffy Taffy
  255. Chem

    238U + 2H --> ________+ 2 1n 92 1 0 I don't know the answer that goes in the blank or how to figure it out. Please help me. Thanks

    asked by Andretti
  256. English

    I need your help to check the word choice in these sentences. Thank you. 1) George Orwell along with Ernest Hemingway were among the more famous (is "most" a mistake?) foreigners participating in the efforts against the fascists. 2. Many Spanish

    asked by Henry
  257. Management

    Pat,a manager at State University, is deciding how to set up a procedure for registering online that gives students fair access to courses. Pat is engaged in the (a) utilitarian, (b) individual, (c) moral-rights, or (d) justice approach. I chose (b)

    asked by Carol
  258. math

    if two vertices of equilateral triangle is (0,0) (3,3^1/2)find the third vertex

    asked by Anonymous
  259. English

    Could you please check these sentences, too? 1)Winston lives in Victory Mansions, an apartment (?) for Outer Party members in what used to be London. He also rents a small apartment in the Proles area with Julia for the purpose of meeting her. 2)Big

    asked by Henry
  260. maths

    If f (x) =x^3−2x^2−x+5,then the remainder of g(x)=f( f(x)) divided by (x − 2) is(a) 3 (b) 5 (c) 7 (d) 9 (e) 11? 3 days ago - 1 day left to answer.

    asked by nothando
  261. English

    Thank you very much, Damon. Here are a few more sentences I need to check.In particular, a need to know which word choices are possible. 1)He is brought/sent to (into also possible) prison cell 101, where he is systematically beaten and tortured. O’Brien

    asked by Henry
  262. PHI103

    If the word "should" appears in a sentence, that sentence will always involve an ethical claim. True False To tell you the truth i really do not know this but maybe it could be true

    asked by Ashley
  263. PHYSICS

    A space explorer is 4.6 billion km away from a certain star, and observes that the gravitational force of attraction exerted on the spacecraft by the star is 500 N. What will the force become when the craft has approached to a position 2 billion km from

    asked by Jake
  264. math

    how to write 51/60 as a reduced fraction

    asked by Anonymous
  265. chemistry

    If you have 2 moles of glucose in 8 liters of solution, what is the molarfity of this solution?

    asked by idk
  266. Trig.

    finnd a possible measure of the angle drawn in standard position that passes through the points (ã2,-ã2)

    asked by John
  267. Physiology (reproduction)

    if only one sperm penetrates into the zona pellucida of the ovum n other sperm which try to bind to the ovum are prevented from binding by the cortical granules secreted by exocytosis than what happens in Sextuplet? please give a detailed explanation.

    asked by kamran Ahmed
  268. Tiếng ANh

    Thầy làm giup em câu này với ạ. Make these sentences positive or negative or questions, using the verbs given in capitals and the past Simple. Of course we …. The house ourselves. We don’t know anything about building!

    asked by Chu Phi Hùng
  269. Chemistry

    How would you analyze a solution known to contain Hg22+ and Cu2+?

    asked by Kelly
  270. Math

    If you deposit 1200.00 annually with 5% compounded interest, how many years will it take to get to a million dollars?

    asked by Molly
  271. Math(Can someone please answer!!)

    ln [2.30E-2] = ln(0.102) - (k s-1)(2360 s) k = 6.31E-4 s -1 I did 2360k = 1n(0.102 * 0.023) 2360k = -6.055 then I divided 2360 by -6.055 but I didn't get 6.31e-4. Where did I mess up???

    asked by Hannah