Questions Asked on
February 19, 2010

  1. chemistry

    How many moles are in 52.3 grams of CaSO4?

    asked by Jessica
  2. chemistry

    What is the mass of 0.425 moles of CaCl2? The molar mass of CaCl2 is 110.98 g/mol.

    asked by Jessica
  3. Calculus

    The circumference of a sphere was measured to be 88000 cm with a possible error of 050000 cm. Use linear approximation to estimate the maximum error in the calculated surface area. Estimate the relative error in the calculated surface area.

    asked by John
  4. Chemistry

    The liquid contains 66.6c, 11.2% H and 22.2% 0. What is its molecular formula? How do i figure that?

    asked by Courtney Venable
  5. Chem

    Osmotic Pressure.. If the height of the column is 6 cm what is the osmotic pressure of the sugar solution in g/cm2 Assume the density of the solution is 1.01 g/ml.. Beaker of water with beaker of sugar solutution with semi permeable membrane

    asked by donna
  6. Chemistry

    Two more questions. To prepare a sample of hydrogen gas, as studen reacts zinc w/ hydrochloric acid. The hydrogen is collected over water at 22c and the total pressue is 750 mm hg. What is the partial pressue of H2?

    asked by Courtney Venable
  7. physics

    A bike is hanging from a hook in a garage. Consider the following forces. (a) The force of the Earth pulling down on the bike. (b) The force of the bike pulling up on the Earth. (c) The force of the hook pulling up on the bike. (d) The force of the hook

    asked by jared
  8. physics

    A skydiver, who weighs 650 N, is falling at a constant speed with his parachute open. Consider the apparatus that connects the parachute to the skydiver to be part of the parachute. The parachute pulls upward with a force of 620 N. Consider the skydiver

    asked by jared
  9. physics

    A 12-kg turtle rests on the bed of a zookeeper’s truck, which is traveling down a country road at 55 mi/h. The zookeeper spots a deer in the road, and slows to a stop in 12 s. Assuming constant acceleration, what is the minimum coefficient of static

    asked by mary
  10. Physics 2

    the escalator that leads down into a subway station has a length of 30.0m and a speed of 1.8 m/s relative to the ground. student is coming out of subway by running up the wrong direction on escalator. local record time for this is 11s. relative to

    asked by ShaD
  11. physics

    A 12-kg turtle rests on the bed of a zookeeper’s truck, which is traveling down a country road at 55 mi/h. The zookeeper spots a deer in the road, and slows to a stop in 12 s. Assuming constant acceleration, what is the minimum coefficient of static

    asked by mary
  12. math

    Find f'(a) for f(x)=4x3+1x f'(a) =? please please help. i just need to figure out how to do it once and then i can do the rest of my problems

    asked by kayla
  13. calculus

    Find f'(a) for f(x)=13x/3x+1

    asked by kayla
  14. physics

    Small, slowly moving spherical particles experience a drag force given by Stokes’ law: where r is the radius of the particle, is its speed, and η is the coefficient of viscosity of the fluid medium. (a) Estimate the terminal speed of a spherical

    asked by katie
  15. British Literature

    Hello. Can someone help me with scanning a poem? 1. A. Scan the following lines from Mary, Lady Chudleigh's poem "To the Ladies". Mark the syllables, separate the feet with short vertical lines, and indicate the rhyme scheme Him still serve, him still

    asked by Tamir
  16. Math

    A line parallel to 4x=3y-13? I came up with m=4/3 y-3=4/3 + 16/3 after working problem got ans y= 4/3x+25/3 confused???

    asked by Maria
  17. Chemistry

    Dear DrBob222 !!! Would you please help me answers the question that I posted. I really don't understand and need help! Please, Thanks

    asked by Ashley
  18. Calculus

    Evaluate the indefinite integral. (e^7x)/(e^14x+16)dx

    asked by <3
  19. Accounting

    What is the effect on income before taxes if the aging category is changed on an accounts receivable by issuing a new invoice to customers with a revised date?

    asked by Alex
  20. physics

    A pilot with a mass of 50 kg comes out of a vertical dive in a circular arc such that at the bottom of the arc her upward acceleration is 3.5g. (a) How does the magnitude of the force exerted by the airplane seat on the pilot at the bottom of the arc

    asked by mike
  21. physics

    Small, slowly moving spherical particles experience a drag force given by Stokes’ law: where r is the radius of the particle, is its speed, and η is the coefficient of viscosity of the fluid medium. (a) Estimate the terminal speed of a spherical

    asked by mike
  22. st. marry

    how to solve it [2-3(2-3)to the power 3]hole to the power 3

    asked by sonu
  23. Chemistry (conceptual question)

    If you have a soln of HNO2 at equilibrium HNO2 (aq) + H20 (l) H3O+ (aq) + NO2- (aq) and water is added, is there a shift in the equilibrium? Can someone explain why to me? I have a hard time understanding the concept of equilibrium and what is part of the

    asked by Tommy
  24. Calculus

    Evaluate the limit using L'Hospital's rule if necessary. lim as x goes to +infinity x^(6/x)

    asked by <3
  25. Chemistry

    This might seem silly but in the rxn O^2- + H2O --> 2OH-, can OH- behave as both the conjugate acid and the base?? Or is it one or the other?

    asked by Angelica
  26. Psychology

    I need 2some goog sites with methods for studying cerebral lateralization.

    asked by Melikah D.
  27. survey math

    11110 base 2 = (?) base 10

    asked by brad
  28. Physics

    I have studied the instruction manuals of 3 Hi Fi separates units. They are: CD player Cassette tape player Cassette tape player The outputs of these units are quoted respectively as: 2.1 V RMS 150mV/5 kilo ohms 0.775 V (0 VU) Optimum load impedance more

    asked by Mike
  29. biology 102

    A prediction (educated guesses as to what the potential results may be) for each experiment listed below: 1) knee-jerk reflex 2) pupillary reflex (shield left eye, shine bright light into right eye, observe pupils) 3) 2-point threshold 4) temperature

    asked by David
  30. Maths- Probabilty

    1. From a bag containing 5 gold and 3 red marbles that feel identical, one is drawn at random. If the first marble drawn is not replaced before the second is drawn: i) Explain why the probability of picking the second gold marble is 4/7 and why the

    asked by Kesha
  31. Math

    Finding the equation of the least square line.Ex=110, Ex^2 =1540, Ey=468, Ey^2=22,434, Exy=5524. The answer is Y=1.139x+34.27. I can figure out the 1.139 but not the 34.27. Pls Help

    asked by Marie
  32. Calculus

    I have the function f(x)=e^x*sinNx on the interval [0,1] where N is a positive integer. What does it mean describe the graph of the function when N={whatever integer}? And what happens to the graph and to the value of the integral as N approaches infinity?

    asked by Paul
  33. nutrition

    After World War II, farming, fishing, and other food production activities became large scale enterprises which caused

    asked by kelli
  34. math

    The fixed costs of oreparting a business are the costs include rent, fixed salaries, and costs of buying machinery. The variable costs of operating a business are the costs that change with the level of ouput. Variable costs include raw materials, hourly

    asked by liz
  35. Probability II =)

    You are shown five cards, Three have X written on them and two have Y. The cards are turned over so the X abd Y are no longer visible, and shuffled/ One card is picked and laid face up on the table. It is an X. If the remaining cards are shuffled and

    asked by Kesha
  36. Maths

    - In a normal pack of cards, write down the odds against picking each card. a) a diamond b) a jack c) a red 10 d) a black picture card e) a picture card 1. A die is rolled 3 times. Estimate the chance of 2 or 3 no.'s being the same. Find the probability

    asked by Kesha
  37. english

    sentences using similes that describe waiting for a bus

    asked by bo
  38. Vector Calculus

    A horizontal clothesline is tied between 2 poles, 20 meters apart. When a mass of 5 kilograms is tied to the middle of the clothesline, it sags a distance of 4 meters. What is the magnitude of the tension on the ends of the clothesline?

    asked by Lalo
  39. Vector Calculus

    A horizontal clothesline is tied between 2 poles, 20 meters apart. When a mass of 5 kilograms is tied to the middle of the clothesline, it sags a distance of 4 meters. What is the magnitude of the tension on the ends of the clothesline? [ I am not

    asked by Lalo
  40. math

    integration of sqrt of tan(x)

    asked by prasenjit baidya
  41. Eth125

    I just wanted to know if anyone has a course syllabus for this class. I start this class very soon and I would like to get a head start. Thank you so much.

    asked by Christine
  42. math

    If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

    asked by thommini
  43. trig

    DISCUSS THE POSSIBLE VALUES OF THETA IF THE RATIO IS COS THETA IS EQUAL TO 0

    asked by NHLANHLA
  44. Physics

    Say what energy changes are taking place: a)clockwork toy b)boy kicking soccer ball c)boiling kettle on a gas ring d)person walking upstairs What are the wasted energy in a) b) c) and d)?

    asked by Amir
  45. music

    what does an A note look like?

    asked by Cookie
  46. Algebra

    When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -10t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height

    asked by Martha
  47. business

    Provide an example of one business in your area that has demonstrated accountability to people, community, and to its environment.

    asked by Anonymous
  48. Trigonometry

    Show that cos M(1/cosM-cosM) is equal to sin^2M

    asked by Laly
  49. Science

    If blackbodies emit over all wavelengths will x rays be emmited by my cooker element?Which emits mostly in the infrared?

    asked by nichola
  50. Chemistry

    How many electrons and how many protons are in the ion Cr6+?

    asked by Jenna
  51. Algebra

    Biologists want to set up a station to test alligators in the lake for west nile virus. Suppose that the cast for such a station are $2,500 for set up costs and $3.00 to administer test. a. Write an expression that gives the total cost to test x animals.

    asked by Carson
  52. Math

    How would you set this to y=? x-4y=5

    asked by Jessica
  53. college

    Suppose that the number of cars, C, on 1st Avenue in a city over a period of time t, in months, is graphed on a rectangular coordinate system where time is on the horizontal axis. Further suppose that the number of cars driven on 1st Avenue can be modeled

    asked by Jeffery
  54. Biology

    19. Which is NOT a general characteristic of plants? a. use oxygen to make usable energy b. primary producers c. have specialized cells d. cell walls composed of cellulose I think it might be either A or B... 20. Which of the following are characteristics

    asked by mysterychicken
  55. math

    how do you find the slope

    asked by sydney
  56. 7th grade

    if 60 grams of potassium chlorate is dissolved into 100cm3 of water at the temperature of 60 degrees celsius is the solution saturated unsaturated or supersaturated?

    asked by sean
  57. chemistry

    how do you balance sucrose reacts with oxygen to yield carbon dioxide and water?

    asked by Anonymous
  58. physics-energy

    A toy gun uses a spring to project a 5.3 g soft rubber sphere vertically. The spring constant is 8.0 N/m, the barrel of the gun is 15 cm long, and a constant frictional force of 0.032 N exists between barrel and projectile. How high does the projectile go

    asked by nate
  59. college algebra

    'A mason can build a wall in one-half the time it takes an apprentice. Together they build the wall in 12 hours. How long would it take the apprentice working alone to build the wall?' This needs to be worked using a table. The column headings are 'Time

    asked by Brenda
  60. Algebra

    The equation y=-1777x+27,153 can be used to predict the number of gun deaths in the US x years after 2000, that is x=0 corresponds to 2000, x=3 corresponds to 2003, x=6 corresponds to 2006. and so on. Predict the number of gun deaths in 2006 and 2007. Then

    asked by Eleana
  61. maths

    The sum of the co-efficients in the expansion of (1 - 2x +5x^2)^n is a and the sum of the co-efficients in the expansion of (1 +x)^2n is b.Then (A) a=b (B) (x-a)^2 + (x-b)^2 =0 (C) (sin a)^2 + (cos b)^2 =1 (D) ab=1 Ans. A,B,C But How???

    asked by mohit
  62. Algebra

    The function H described by H(x)= 2.75x+71.48 can be used to predict the height in centimeters, of a woman whose humerus is x cm long. Predict the height of a woman whose humerus is 39 cm long.

    asked by Eleana
  63. lab

    We have to build our website using the sites that are free. Can you give me some good sites to create my own website?

    asked by keysha
  64. Chemistry

    Select all cases in which the attraction between units in the solid can best be classified as electrostatic bonding forces. CsBrO3 N2O3 Cr(OH)2 Ca3(AsO4)2 Rn Ar None

    asked by Scott
  65. CHEM

    Select all cases where the substance shown has a molecular dipole. CH4 methane CH3CH2CH2CH3 butane ICl iodine chloride H2Se hydrogen selenide CH3CHO acetaldehyde CH3OCH2CH3 methylethylether None

    asked by Arron
  66. math

    What happens to the value obtained for the slope if the coordinates of the two ordered pairs aren't subtracted in the same order? what is an example. All I know is that you would get the wrong slope for the ordered pairs, I do not know why. Can anyone

    asked by rmz
  67. Chemistry

    Calculate the number of joules required to melt 57.4g of benzene at 5.5 degrees celsius? The heat of fusion for benzene is 9.87 KJ/mol and specific heat for liquid benzene is 1.63 J/g*deg)

    asked by Jake
  68. physics

    What is the weight of a 0.2kg toy on or near the surface of the Earth? (g = 9.8m/s2? in newton

    asked by john
  69. physics

    What is the weight of a 0.2kg toy on or near the surface of the Earth? (g = 9.8m/s2? in newton

    asked by john
  70. Chemistry

    A chunk of copper weighing 18.9 grams and originally at 97.63oC is dropped into an insulated cup containing 77.9 grams of water at 22.44oC. Assuming that all of the heat is transferred to the water, the final temperature of the water is what in C.

    asked by Jackson
  71. math

    The width of a rectangle is fixed at 24 cm. What length will make the perimeter greater than 88 cm? I got 21 is that correct?

    asked by Katelynn Renee
  72. Math

    (1.6x10^5)(12.7x10^4) I think it is 20.33x10^1

    asked by pavleen
  73. math

    (.0180x10^8)/(.36x10^3) i think it is .009470x10^5

    asked by pavleen
  74. MATH

    what is density I think it is the amount of volume in an object

    asked by pavleen
  75. business

    how market prices ration goods and services among those who want them? 2 page paper

    asked by Mike
  76. Math

    Store A usually sells a jacket for $72 but today I can buy it for $40. Store B usually sells the same jacket for $38 but today I can buy it for $18. Which store is offering the greatest percentage off the origanal price ? In which store would you buy the

    asked by pavleen
  77. Chemistry

    I need to find heat of vaporization. The liquid starts to vaporize at 110 degrees C and there is 10 g of the liquid. I don't think it matters but it is heated at 60 kj/minute. Would it just be amount multiplied by the temp when it starts to vaporize? I

    asked by jp
  78. Geography

    Please help me on these questions: 3. The soil of much of the steppe region of Northern Eurasia is a. very fertile and productive. b. lacking in minerals and unproductive c. too cold to produce much food d. heavily fertilized with chemicals to make it

    asked by y912f
  79. chemistry

    A 0.972g sample of a CaCl2*2H2O/K2C2O4*H2O solid salt mixture is dissolved in ~ 150ml of deionized water, previously adjusted to a pH that is basic. The precipitate, after having been filtered and air-dried, has a mass of 0.375 g. The limiting reactant in

    asked by Maria
  80. quantum physics

    To what speed must an electron be accelerated for it to have a wavelenght of 3.0cm?

    asked by john
  81. Chemistry

    It was mentioned that the rates of many reactions approximately double for each 10 °C rise in temperature. Assuming a starting temperature of 25 °C, the activation energy would be_____________ in kJ mol-1, if the rate of a reaction were to be twice as

    asked by Pavleen II
  82. Chemistry

    The vapor pressure of CCl3F at 300 K is 856 torr. If 11.5 g of CCl3F is enclosed in a 1.0 L container, will any liquid be present? If so, what mass of liquid?

    asked by Elizabeth
  83. Biology

    39. A) Identify a producer, herbivore, omnivore, and carnivore [in the ocean], explaining their roles in the path of energy flow. My answer: One producer in the ocean is algae; they provide energy. Krill are herbivores, which means that they feed off of

    asked by mysterychicken
  84. Chemistry PLEASE!!

    how do i calculate a concentration ratio of oxidised to reduced cytochrome c Fe2+ to Fe3+ given at 25 C and pH7 E(mV) as 100 and absorbance at 550nm as 1.5 E is relative to standard hydrogen electrode i know im supposed ot use the nernst equation i just

    asked by lucy
  85. english

    I need help in doing a sentence outline on the leaglazation of marajuana

    asked by christy
  86. Geography

    #50. What were the factors that played a significant role in the collapse of Russian control over Eastern Europe? my answer: There were a few factors that played a significant role in the collapse of Russian control over Eastern Europe, corruption and

    asked by y912f
  87. chemistry

    A 2.50 g sample of a hydrate of calcium sulphate losses 0.523 g of water when heated. Determine the mass percent of water in the hydrate and the formula of the hydrate.

    asked by thao nguyen
  88. MATH

    what percent is 3 out of 35 what percent is 9 out of 34 what percent is 24 out of 33

    asked by Mattie
  89. math

    so is 9 out of 34 26.4%

    asked by Mattie
  90. Biology

    [Continued from my last post] B) Explain where a detritivore and a decomposer could enter this path. Explain what they feed on on the systems. My answer: Detritivores include worms and fungal and bacterial decomposers. Bacteria and fungi are known as

    asked by mysterychicken
  91. chem

    Potassium chloride crystallizes with the rock salt structure. When bathed in X-rays, the layers of atoms corresponding to the surfaces of the unit cell produce a diffracted beam of X-rays (¥ë=154 pm) at an angle of 6.97¨¬. From this, the density can be

    asked by meherpreet
  92. chemistry

    Calculate the interplanar spacing (in picometers) that corresponds to defracted beams of X rays at è = 24.0o, if the X rays have a wavelength of 127. pm. Assume n = 1 _____pm

    asked by girllll
  93. math

    Please help with all of these: 3 out of 32 10 out of 30 20 out of 29 3 out of 35 9 out of 34 24 out of 33 17 out of 19

    asked by Mattie
  94. Math

    What is the fromula to calculate the volume of a washer?

    asked by Tom
  95. 6th grade

    need help with thermal energy any one can help me

    asked by Darneisha
  96. French

    Could you check this please thanks Part 1 Directions: Au téléphone: Complétez en utilisant les verbs entre parenthèses. 1. Je --------- dans la cuisine quand le téléphone ---------. (travailler, sonner) Answer 1: travaillais Answer 2: sonné 2. Je

    asked by Lisa
  97. Algebra

    Can you tell me what this sign means ^

    asked by mike
  98. MATH

    An angle more than go but less than 180 is called

    asked by PAVLEEN
  99. MS. SUE/english

    dear ms. sue what is a propositional phrase

    asked by alison
  100. math

    An angle less than 90 degree is called

    asked by PAVLEEN
  101. history

    if you are riding a horse do you live or work in the peidmont region,why or why not?

    asked by chanquilla
  102. math

    if john has 56789 pens and steve has 23 times that amount how many does steve have?

    asked by chanquilla
  103. algebra

    a 15-in. tv set has a width of 12 inches. what is the height?

    asked by Anonymous
  104. science

    how much work is done by a crane that lowers 1000N of material 150m?

    asked by liz
  105. 11th grade

    how do you solve a dilution problem, this is chemistry

    asked by marisa
  106. Rhetoric Writing

    Hey I am doing a Process Analysis assignment. I chose "How a magician saws a woman in half" I need some help in finding information for this topic as it relates to the stages and steps taken in doing this magic. Also i will like to find some visual of how

    asked by Ren
  107. science

    what is the proper term whenn your being used as a human guneia pig? i can not remember please help???????? thanks

    asked by bobbi
  108. Math

    Garden Area Problem. A designer created a garden from two concentric circles whose equations are as follows: (x+2)^2+(y-6)^2=16 and (x+2)^2+(y-6)^2=81 The area between the circles will be covered with grass. What is the area of that section? How do you do

    asked by rmz
  109. Math

    Give the equation of the circle with the given center and radius: Center at (1, 2) Radius is 1/2 I know that you are to use either (x-h)^2+(y-k)^2=r^2 or x^2+y^2=r^2, but I do not know how to do this? Can anyone help

    asked by rmz
  110. College physIcs

    An electron travels at a speed of 4.0×104 m/s through a uniform magnetic field whose magnitude is 1.4×10−3 T. What is the magnitude of the magnetic force on the electron if its velocity and the magnetic field are perpendicular? F= N What is the

    asked by Lanise
  111. Cemistry

    If you have a chemical reaction in equilibrium and add more of the product...what happens to the product's concentration, if it doesn't increase? Does it stay the same or decrease a little? I know the reactants concentration will increase and if it is an

    asked by Connie
  112. College Physics

    A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 4000 N/C and 20 mT,respectively. Find the speed of the particle if it is a proton. v= m/s Find the speed of the particle if it is an alpha

    asked by Lanise
  113. College Physics

    Two long, parallel wires separated by 50 cm each carry currents of 3.0 A in a horizontal direction. Find the magnetic field midway between the wires if the currents are in the same direction. B= T Find if they are in opposite directions. B= T

    asked by Lanise
  114. math

    Identify the slope and the y-intercept for the line associated with the equation. 5x+20y=60 20y=-5x+60 -20=-5x+60-20 y=-5x+40 is that the right equation?

    asked by rmz
  115. College Physics

    A solenoid is wound with 290 turns per centimeter. An outer layer of insulated wire with 200 turns per centimeter is wound over the solenoid's first layer of wire. When the solenoid is operating, the inner coil carries a current of 10 A and the outer coil

    asked by Lanise
  116. math

    The Egg Problem. A certain zoo kept records of the relationship between the weight of a mother ostrich and the weight of her egg. Data for three birds is shown in the next table. a. Estimate the weight of an egg from a mother ostrich weighing 175 lbs. b.

    asked by rmz
  117. Chemistry

    A certain vinegar is 6.02% acetic acid (HC2H3O2) by mass. How many grams of HC2H3O2 are contained in a 355-mL bottle of vinegar? Assume a density of 1.01g/mL.

    asked by lucylu
  118. math

    How many rectangles will fit about a point when tessellating the plane? How do you know?

    asked by nicole
  119. AED

    Identify how each of the five core principles of NCLB 2001—strong accountability, expanded flexibility and control, methods based on scientific research, expanded options for parents, and highly qualified teachers—might affect diverse learners, both

    asked by GGIFT
  120. Physical Chemistry

    When 1.00 g of gaseous I2 is heated to 1000. K in a 1.00 L sealed container, the resulting equilibrium mixture contains 0.830 g of I2. Calculate Kc for the dissociation equilibrium below. I2 2 I What I did was converted the initial I2 into moles then

    asked by Trixie
  121. accounting

    The following information is for X Company for 2009: Direct materials purchased $ 36,484 Direct materials used 34,013 Direct labor 14,439 Overhead 25,464 Work in Process, January 1, 2009 4,118 Finished Goods, January 1, 2009 2,326 Work in Process, December

    asked by w
  122. College Physics

    Two long, straight, parallel wires 8.0 cm apart carry currents in opposite directions. Use the right-hand source and force rules to determine whether the forces on the wires are attractive or repulsive. a)Repulsive b)Attractive If the wires carry equal

    asked by Lanise
  123. English

    Can you please check the following statements with me? Thank you very much. 1.I suggested to my mum what she should buy for my father as a Christmas present. 2.My dad made (prepared) the Christmas lunch.What did he prepared for lunch? 3.On Epiphany I

    asked by Franco
  124. English

    I forgot to include the following statements. Thank you very much for your help. 1.On the seventh of January my holidays were finished (or finished, had finishes) and I went back to school. 2.On New Year’s Eve I was invited to a party at a friend’s

    asked by Franco
  125. Chemistry

    The initial pressure of BrCl(g) in a reaction vessel is 1.6 mbar. If the vessel is heated to 500 K, what is the equilibrium composition of the mixture? See this table for data on the reaction. P Br2 ? mbar PCl2 ? mbar P BrCl ? mbar

    asked by Angelica
  126. Chemistry --really need help!

    I am really struggling with these problems!! A reaction mixture that consisted of 0.20 mol N2 and 0.20 mol H2 was introduced into a 25.0 L reactor and heated. At equilibrium, 5.0% of the nitrogen gas has reacted. What is the value of the equilibrium

    asked by Angelica
  127. math

    rob & freddie have 15 cds between them. rob has twice as many as freddie. how many cds does rob have

    asked by preston
  128. social studies

    can you please compare and contrast ; direct democracy and representative democracy?

    asked by Sally
  129. science

    i need to write a poem about nitrogen. please help. i'm not good at poetry.

    asked by lynn
  130. chemistry

    The pH of a 1.2 M solution of an unknown weak base is 10.65. What is the Kb for the base?

    asked by rodrigue
  131. chemistry

    What is the original molarity of a solution of formic acid (HCOOH) whose pH is 3.74 at equilibrium? ka =1.7x10^-4

    asked by rodrigue
  132. American Government

    if there is collision between the president and congress,can congress restain the president in foreign policy making?

    asked by Diana
  133. Chemistry Question!!

    When 1.00 g of gaseous I2 is heated to 1000. K in a 1.00 L sealed container, the resulting equilibrium mixture contains 0.830 g of I2. Calculate Kc for the dissociation equilibrium below. I2 2 I What I did was converted the initial I2 into moles then

    asked by Trixie
  134. Geometry

    Show that Euler's formula holds for a right pentagonal prism.

    asked by Nicole
  135. Chemistry

    I am designing a lab right now, and I want to know: if I fill a beaker with cold water from the tap and submerge a sample of solid metal, after a couple of minutes, the metal should be the same temp as the water, right? Would it be quicker to use hot water

    asked by Stuck
  136. choir

    i am taking intro to music what words are good to use to critique a choir concert

    asked by lisa
  137. Maths

    When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -10t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height

    asked by Anonymous
  138. ENGLISH

    How does Mark Twain show satire in "Experience of the McWilliamses With membranous croup & The McWilliamses And The Burglar Alarm? specific lines may help...thanks

    asked by Rose7
  139. Literature about Marian Anderson

    Can you give me some examples of how she paid her past karma (basically how she learned from it) I need at least 4. Please help!!

    asked by Rae Rae
  140. SCI/275 ENVIRONMENTAL SCIENCE

    three freshwater and three ocean water resource challenges

    asked by Anonymous
  141. classroom instruction 9not sure if i am right)

    • Search the Internet to locate and review your state’s educational standards for a grade level and subject that interests you, such as second-grade language arts or fifth-grade science. i am doing physical education in wisconsin. this is what i have i

    asked by scooby
  142. ? on Chemistry

    If you have a chemical reaction in equilibrium and add more of the product...what happens to the product's concentration, if it doesn't increase? Does it stay the same or decrease a little? I know the reactants concentration will increase and if it is an

    asked by Connie
  143. Math Pre-Algebra

    What is the value of 1 raised to a negative exponent? ... Maybe an example would help me better understand. Thank you very much ... I know it is like a fraction

    asked by Emily
  144. Pre-Algebra ... again :-(

    How do i go about finding the integers of a product and quotient ... like, product of -20 whose quotient is -5 ..... thanks again

    asked by Emily
  145. Physical Chemistry

    Calculate the equilibrium constant at 25°C and at 100.°C for each of the following reactions, using data available in Appendix 2A. Remember that the organic molecules are in a separate section behind the organic molecules in Appendix 2A. (a) HgO(s) Hg(l)

    asked by Trixie
  146. Chemistry

    When 0.689 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 112C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

    asked by Adam
  147. Enlish or grammar

    What is the tthe difference between General information and Specific information?

    asked by Emma
  148. Chemistry

    When 0.689 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 112C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

    asked by Adam
  149. childcare

    Please I need to help about Competency Goal #6 - commitment to professionalism. I want to know some examples of it.

    asked by Rosa
  150. pre-Algebra

    Sorry, struggling through pre-Algebra .. :-( .. How do i figure out 5x = -20 ?

    asked by Emily
  151. classroom instruction (final)

    I choose fourth grade Physical Educational standards in my state which is Wisconsin. Leading an Active Lifestyle Performance standards By the end of fourth grade the students will be able to identify several less violent to energetic, strong, and active

    asked by scooby
  152. Geometry

    How do the axes of rotational symmetry of an octahedron compare to the axes of rotational symmetry of a cube?

    asked by Nicole
  153. Eth 125

    Post a 200- to 300-word summary of a current issue between Native Americans and the federal government. Identify the legislation that you think is linked to the issue, and explain why you think there is a connection. Consult the National Congress of

    asked by
  154. anthropology

    Navajo Witchcraft

    asked by candy
  155. college

    If the 1 kg standard body has an acceleration of 2.00 m/s^2 at 20.0 degrees to the positive direction of an x axis

    asked by Anonymous
  156. childcare

    thank you Ms Sue,but I need to know how to make an essay about it. To maintain a commitment to professionalism.

    asked by Rosa
  157. ethinic

    I don't think this is totally a homework question, but maybe someone can help. I have to do a PowerPoint presentation soon and have to add speaker notes. Well I have PowerPoint 97....How can I add the speaker notes in that? I know how in 07 but I guess

    asked by stephanie
  158. childcare

    Ms. Sue Thank you so much.

    asked by Rosa
  159. financial

    Compute the worth of Arcadia Hospital in 2005 using rules of thumb, adjusted book value, and discounted cash flow valuation (for this final method, use the table provided). Assume the cash flow for 2005 is the same as 2006. ($655 million) 1) Rules of

    asked by Tiffany
  160. Physics

    I need to sketch a 45 deg - 45 deg - 90 deg triangle and indicate the lengths of each side assuming the hypotenuse is = to 1 meter

    asked by Lisa
  161. sicial studies

    i have been all through my social studies book trying to find this answer could you please help me?

    asked by neka
  162. social studies

    im sorry I for got to type the answer.This happened on october 29,1929 known as the black tuesday.

    asked by neka
  163. physics

    how much heat is required to vaporize 7 grams of ice initially at 0 degrees celsius when the latent fusion of ice is 80 cal/g, the vaporization of water is 540 cal/g, and the specific heat of water is 1 cal/(g x C)?

    asked by elisabeth
  164. s.s.

    what program hired young black men to plant trees and build parks?

    asked by neka
  165. math

    9 bull elephants and 3 female elephants are sharing peanuts.First,every bull gives an equal amount of peanuts to every frmale.Then, every female gives a different, equal amount to every bull. Each elephant then possessed the same number of peanuts-the

    asked by someone
  166. physics

    When a lead bullet hits a solid target at high speed, its entire kinetic energy is converted into heat. For simplicity, assume that all the heat is concentrated in the bullet rather than the target. If the bullet's initial temp. is 20` C, how fast should

    asked by elisabeth
  167. physics

    my teacher wasn't in school and this assignment is due @ 7am!!!!! The density of gasoline is 730 kg per cubic meter. One gallon of gasoline occupies .0038 cubic meters. Gasoline's volume expansion coefficient is .00096` C (^-1). How many extra kilograms of

    asked by elisabeth
  168. Chemistry

    If I'm going to transfer a piece of metal (a reasonable size) from a beaker of boiling water into a calorimeter, what should I use? Tweezers are too small...I can only think of a beaker clamp, but they are, after all, for beakers.

    asked by Stuck
  169. physics

    thanks again to anyone who can possibly help!!!!! i wish i had a book or notes or something about this kind of stuff :( The linear expansion coefficient of glass is 9 x 10^-6 (`C)^-1. An automobile windshield has dimensions of 59 cm by 390 cm. What minimum

    asked by elisabeth
  170. s.s.

    these rates increased after the great depression.

    asked by neka
  171. s.s.

    The large movement of African Americans from the south to the north.

    asked by neka
  172. science

    Secretin a) stimulates the release of alkaline products by the pancreas b) stimulates the gastric juices c) is released by the salivary glands d) decreases the stomach's churning activity e) stimulates the release of digestive enzymes I think that the

    asked by sammi
  173. s.s.

    American's worst period of economic hardship in its history.

    asked by neka
  174. s.s.

    Charle's Lindbergh had one name"the Spirit of St Louis"

    asked by neka
  175. s.s.

    This was the plan that Franklin D. Roosevelt created to assit the U.S. after the deoression. was it the new deal.

    asked by neka