Questions Asked on
March 8, 2010

  1. AP Chemistry

    Assume that 30.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a 0.10 M solution of a monoprotic strong acid HX. (a) How many moles of HX have been added at the equivalence point? (b) What is the predominant form of B at

    asked by Sally Perez
  2. uah

    Assume you are performing the calibration step of Experiment 8 and you begin with 70 g of water at 20 oC and 70 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment,

    asked by dee
  3. Physics

    Pulling the string on a bow back with a force of 28.7lbs, an archer prepares to shoot an arrow. If the archer pulls in the center of the string, and the angle between the two halves is 138 degrees, what is the tension in the string?

    asked by Jim
  4. Chemistry

    when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?

    asked by stocihs hard
  5. HUMAN LIFE

    I have to do a project about the human life cylce dose anyone know any good websites or any good information about the seven stages of life or the human life span???? PLZZ HELP ME IT IS DUE THIS WEDNESDAY CAN SOMEONE PLZZZ HELP ME PLZZZZ

    asked by Rachael.gardner
  6. Intro Chemistry

    What is the name of NH4CNO? is it ammonium something? Thank you

    asked by emath
  7. Math

    A small factory employs 7 experienced and 5 inexperienced workers. The mean monthly wage of these 12 workers is $700. Given that the mean monthly wage of 5 inexperienced workers is $602, calculate the mean wage of the 7 experienced workers.

    asked by MJ
  8. Accounting

    On January 1, 2009, Sweetwater Furniture Company leased office space under a 21-year operating lease agreement. The contract calls for annual rent payments on December 31 of each year. The payments are $11,000 the first year and increase by $600 per year.

    asked by Anoymous
  9. Chemistry

    If 15.0 kJ are released when 1.40 g of F2 reacts with an excess of SiH4, complete the thermochemical equation below. SiH4(g) + 2 F2(g) SiF4(g) + 4 HF(g) ÄHrxn=?kJ

    asked by Rach
  10. Physics

    The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.91 m above the floor. When m1 hits the ground its speed is 1.5 m/s. Assume that the pulley is a uniform disk with a

    asked by Jon
  11. Math

    The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the 14 girls is 151 cm, calculate the mean height of the 20 boys.

    asked by MJ
  12. chemistry

    Suppose a solution containing 3.50g of Na3PO4 is mixed with an excess of Ba(NO3)2. how many grams of Ba2(PO4)2 can be formed. 2-Na3PO4 +3-Ba3(NO3)2= 1-Ba3(PO4)2 + 6-NaNO3.(Balanced equation)

    asked by Kerry
  13. Chemistry

    Given the concentration of either hydrogen ion or hydroxide ion, use the ion product constant of water to calculate the concentration of the other ion at 298K A. [H+]= 1.0*10^-4 B. [OH-]=1.3*10^-2 for A do you subtract 1.0*10^-14? and for B do you divide

    asked by Laverne
  14. Math

    1. Write the balanced chemical equation for the reaction NaOH + HCI --> NaCI + H20 2. Extract the relevant information from the qustion: NaOH v= 30mL, M=0.10 HCI v= 25.0 mL, M=? 3. Convert to Liters NaOH v= 0.03 L, M= 0.10M HCI v=0.025L, M=? 4. Calculate

    asked by Maria
  15. algebra

    You deposit $500 in an account that pays 3% annual interest. Find the balance after 2 years if the interst is compounded with the given frequency. a) annually b) quarterly c) daily

    asked by Kayla
  16. Chemistry

    Lead(II) nitrate reacts with potassium iodine to produce lead(II) iodide and Potassium nitrate. If 1.23 mg of lead nitrate are consumed, what is the mass of the potassium nitrate produced?

    asked by stocihs hard
  17. Chemistry

    Calculate the pH at 298K of solutions having the following ion concentrations? A. [H+]=1.0 x 10^-4M B. [H+]=5.8 X 10^-11M for A do you subtract 1.0 X 10^-14 from H+]=1.0 x 10^-4M

    asked by Anonymous
  18. PHYSICS

    Two 2.5-cm-diameter electrodes with a 0.10-mm-thick sheet of Teflon between them are attached to a 9.0V battery. Without disconnecting the battery, the Teflon is removed. a) What is the charge before the Teflon is removed? Q= C b) What is the potential

    asked by JOTHEY
  19. physics

    in a daring rescue by helicopter, two men with a combined mass of 172 kg are lifted to safety. a)If the helicopter lifts the menstraight up with constant acceleration, is the tension in the rescue cablegreater than, less than, or equalto the combined

    asked by Jim
  20. Chemistry

    Why does changing the volume of the reaction vessel have no effect on this equilibrium? CO(g) + Fe3O4(s) CO2(g) + 3FeO(s)

    asked by Sammy
  21. intermediate algebra

    A farmer with 3000 feet of fencing wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?

    asked by irma
  22. Math

    Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of and a standard deviation of 0.04 ounce. Find the probability that a

    asked by Anonymous
  23. Chemistry

    If 15.0 kJ are released when 1.40 g of F2 reacts with an excess of SiH4, complete the thermochemical equation below. SiH4(g) + 2 F2(g) SiF4(g) + 4 HF(g) ÄHrxn = ?kJ

    asked by Megan
  24. chemistry

    Most natural gas consists of about 90% methane, CH4. Assume that the solubility of natural gas at 20 C and 1 atm gas pressure is about the same as that of CH4, 0.02 g/kg water. If a sample of natural gas under a pressure of 20 atm is kept in contact with

    asked by david
  25. Chem again

    The solubility of Acetanilide in hot and cold water is: Temperature.........Solubility in 100ml H20 100C....................5.5g 0C........................0.53g What is the maximum recovery if 5.0g of acetanilide is recrystallized from 100mL of water? My

    asked by Natasha
  26. physics - PLEASE HELP

    A person whose eyes are H = 1.62 m above the floor stands L =2.24m in front of a vertical plane mirror whose bottom edge is 43 cm above the floor. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point on the

    asked by DJ
  27. Science-Chem

    Sucrose, C12H22O11, is burned to produce carbon dioxide and water. What is the balanced formula and reaction type?

    asked by Jacob
  28. physics

    How many coulombs of positive charge are in 3.8 mol of O2 gas?

    asked by deb
  29. Psychology

    Andy, a high school sophomore, lacks self-discipline, fails to plan ahead, and is excessively anxious. He is quickly frustrated by challenging tasks and frequently becomes overly critical of others. Use the psychoanalytic and social-cognitive perspectives

    asked by Amy
  30. Physics

    A 50.0-kg person takes a nap in a backyard hammock. Both ropes supporting the hammock are at an angle of 15.0degrees above the horizontal. Find the tention of the ropes.

    asked by Jim
  31. Physics

    Pulling up on a rope, you lift a 4.35-kg bucket of water from a well with an acceleration of 1.78m/s^2. What is the tension in the rope?

    asked by Steve
  32. College Chem.

    If 20.0 mL of glacial acetic acid (pure HC2H3O2) is diluted to 1.30 L with water, what is the pH of the resulting solution? The density of glacial acetic acid is 1.05 g/mL.

    asked by Katherine
  33. 7th grade

    how did some people hope to solve the problem of california's isolation from the rest of the country

    asked by marcus
  34. Math

    Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of 12.41 ounces and a standard deviation of 0.04 ounce. Find the

    asked by Anonymous
  35. physics

    In a daring rescue by helicopter, two men with a combined mass of 172-kg are lifted to safety. (a) If the helicopter lifts the men straight up with constant acceleration, is the tension in the rescue cable greater than, less than, or equal to the combined

    asked by Matt
  36. Chemistry

    Calculate the pH of .100M of HClO2.

    asked by Robert
  37. Physics

    The magnification of a convex mirror is +0.65X for objects 2.8 m from the mirror. What is the focal length of this mirror?

    asked by Anonymous
  38. intermediate algebra

    A farmer with 3000 feet wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?

    asked by irma
  39. Math 208

    stan invested $5,000, part at 8% and part at 17%. intrest at the end of the year is $490, how much did he invest at 8%

    asked by Tiffany
  40. Chemistry

    Calculate the pOH and pH at 298K of solutions having the following ion concentrations A.[OH-] = 1.0 X 10^-12 B.[OH-] = 1.3 X 10^-2

    asked by Anonymous
  41. English

    Type the prepositional phrases in the boxes. In 1647 the first tax-supported schools were established by law in the United States. i think it (tax-supported)(by law)in the (united states)

    asked by nicky
  42. chemistry

    How much heat (in Joules) is gained by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 15C?

    asked by debra
  43. Physics

    When a ceiling fan rotating with an angular speed of 1.65 rad/s is turned off, a frictional torque of 0.263 N·m slows it to a stop in 4.75 s. What is the moment of inertia of the fan?

    asked by Tory
  44. college chem

    How much heat (in Joules) is gained by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 15C?

    asked by debra
  45. geometry

    State a conclusion that seems reasonable. Donald is older than Jeanette; Donald is older than Ethel. Donald is older than Allen. Conclusion:

    asked by amy s
  46. Enhancing childrend self-esteem

    It's important to help children develop positive self-esteem because

    asked by Anonymous
  47. Physics

    A ski trail makes a vertical descent of 78.0 m (as shown in the figure below ). A novice skier, unable to control his speed, skis down this trail and is lucky enough not to hit any trees. If the skier is moving at 12.1 m/s at the bottom of the trail,

    asked by Sarah
  48. MATH

    13. A tree casts a shadow of 17 ft. The angle of elevation from the tip of the shadow to the top of the tree is 68°. To the nearest foot, what is the height of the tree? 14. The angle of depression of a diver from the boat is 34°, and the diver is 367 ft

    asked by Karla
  49. organic chemistry

    how do you increase the yield of triphenylmethanol in a grignard reaction?

    asked by Rachel
  50. Physics

    A cyclist starts from rest and pedals so that the wheels make 7.7 revolutions in the first 5.1 s. What is the angular acceleration of the wheels (assumed constant)?

    asked by Max
  51. Chemistry

    Determine the pH of 0.18M NH4Cl.

    asked by Katelynn
  52. Physics 1111: Orbitals and Distance

    A planet has two satellite moons. Moon X has an orbital period of 2.27 days. Moon Y has an orbital period of about 3.40 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.

    asked by Sar
  53. organic chemistry

    how do you increase the yield of triphenylmethanol in a grignard reaction?

    asked by Rachel
  54. Chemistry

    Consider the gas-phase equilibrium A ⇌ B. In a series of experiments, different initial amounts of A and B are mixed together, and the mixture in each case is allowed to come to equilibrium. Which one of these experiments would yield values for the

    asked by Val
  55. Chemistry

    when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?

    asked by stocihs hard
  56. Chemistry

    when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?

    asked by Kay
  57. Chemistry

    What are the independent and dependent variables when determining the percentage water in hydrated copper sulfate salts, while designing the experiment? The question states 'Select sensible amounts to make the independent variable the limiting reagent and

    asked by Veronica
  58. Chemistry

    Consider the gas-phase equilibrium A ⇌ B. In a series of experiments, different initial amounts of A and B are mixed together, and the mixture in each case is allowed to come to equilibrium. Which one of these experiments would yield values for the

    asked by Val
  59. chemistry

    A gas that occupies a volume of 6.75L at 89.0atm will occupy what volume at 68.55mm Hg if the temperature remains constant? (89.0atm/0.09atm)*6.75=6,680 V2=6680 Is this right??

    asked by Shannon
  60. CHEMISTRY

    In some solid calcium carbonate samples, calcium bicarbonate, Ca(HCO3)2, is also present. Write a balanced euation for its reaction with hydrochloric acid.

    asked by jEFFREY
  61. social studies

    what effect did california's rapid population growth have on californios and native americans

    asked by marcus
  62. physics

    A current I = 16 A is directed along the positive x-axis and perpendicular to a magnetic field. A magnetic force per unit length of 0.15 N/m acts on the conductor in the negative y-direction. Calculate the magnitude and direction of the magnetic field in

    asked by Raul
  63. chemistry 1

    A ^H corresponds to an process is it negative, endothermic

    asked by jeanette
  64. geometry

    G lies on the perpendicular bisector of segment AB, AG = x2 + 4x, and BG = x + 18. Find AG

    asked by nadia
  65. Chemistry

    A 5.80 g sample of SiH4 and an excess of oxygen were placed in a reaction container surrounded by 3.40 kg of water. The initial temperature of the water was 14.10°C. At the end of the reaction, the temperature of the water was 48.90°C. Assume the heat

    asked by Megan
  66. geometry 10

    State a conclusion that seems reasonable. 6 + 0 = 6, 8 + 0 = 8, 9 + 0 = 9, 100 + 0 = 100. Conclusion:

    asked by yelena
  67. Physics

    Pulling the string on a bow back with a force of 28.7 lb, an archer prepares to shoot an arrow. If the archer pulls in the center of the string, and the angle between the two halves is 138*, what is the tension in the string?

    asked by Chels
  68. 4th grade

    Finding angles in a circle

    asked by Anonymous
  69. Physics

    The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.87 m above the floor. When m1 hits the ground its speed is 1.4 m/s. Assume that the pulley is a uniform disk with a

    asked by Mary
  70. Global Studies

    Need to develop a thesis statement for an essay on the Israeli/Palestinian conflict. Any ideas possibly involving a 2 state solution, or non-violence at the borders.

    asked by CD
  71. chemistry

    What volume of O2 gas, measured at 297K, is needed to completely burn all the methane (CH4) in a 3.00L container at the same T and P?

    asked by Shannon
  72. English

    Type the prepositional phrase in the box. The Grand Canyon is in Arizona. i put (in) an i got it wroung and then i put (the) and got that wroung THEN i put (is in)

    asked by nicky
  73. Chem

    What characteristics define a system at equilibrium?

    asked by Saul
  74. 4gr math

    an adult cheetah weighs about 130 pounds. an adult mountain lion weighs about 170 pounda. a student estimates that a mountain lion weighs about twice as much as a cheetah. is the estimate reasonable? explain why or why not

    asked by jojo
  75. Chemistry

    118 g of a metal at 82.0°C are added to 50.0 g of water at 31.1°C. When the system reaches constant temperature, the temperature is 40.0°C. What is the specific heat of the metal? The specific heat of water is 4.184 J/g·°C.

    asked by Tiffany
  76. College Chemistry II

    Determine the pH for .16M of NaC2H3O2. Determine the pH for .18M of NaCl.

    asked by Ashley
  77. Chemistry

    Determine the pH of 0.18M NH4Cl.

    asked by Katelynn
  78. Biology

    1. Sponges a. are nonsymmetrical and have oscula b. lack organization into tissues and organs but have specialized cells c. possess cells that are capable of recognizing other sponge cells and have a simple digestive system d. both a and b I'm so confused

    asked by mysterychicken
  79. English

    1. He is not our age. 2. He is not of our age. (Does #1 come from #2? Is 'of' omitted in Sentence 1?) 3. Who is a math genius? 4. Hana is. 5. Hana is a math genius. 6. It is Hana. 7. She is Hana. (Which ones are the answers to the question, #3?)

    asked by rfvv
  80. psychology

    Which is an appropriate way for subordinate to begin a message to her supervisor letting him know what that company has been fined due to safety violations in their department? a) Something horrible has happened! b)We received notice today that we are

    asked by vedrana
  81. sicence

    Almost all maps have these four things: A)scale, legend, title, and compass B)rock units, legend, symbols, and scales C)contour lines, scale, legend, and compass D)rock types, legend, compass, and scale

    asked by nicky
  82. math

    Simplify the given equation. 17x - 6 + 3x - 5 = x + 11 + 4x A)20x - 11 = 5x + 11 B)20x + 1 = 5x + 11 C)9x = 16x

    asked by nicky
  83. Algebra II

    An appliance store manager is ordering chest and upright freezers. one chest freezers costs $250 and delivers a $40 profit. One upright freezer costs $400 and delivers a $60 profit. Based on previous sales, the manager expects to sell at least 100

    asked by Sara K.
  84. Chemistry

    Determine the pH of 0.18M NH4Cl.

    asked by Katelynn
  85. Math

    Wright two differnt word phrases fo the expression t/30

    asked by Cameron
  86. math

    Find the time for two people working together to complete a task if it takes them 4.5 hrs and 6 hrs working individually.

    asked by bernette
  87. Chemistry-Titration

    Acid (Unknown) Solution: HCL Molar Ratio: 1:1 Volume:20 ml Concentration:? Base(Known) Solution: NaOH Molar Ratio 1:1 Volume 26 ml Concentration:0.1

    asked by Karla
  88. P. Chemistry

    A solution of HNO2 is at equilibrium: HNO2(aq) + H2O(l) ⇔ H3O+(aq) + NO2-(aq) Water is added. After the water is added, is there any shift in the equilibrium?

    asked by Tommy
  89. ALGEBRA

    1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C = __6,000__ (all supposed to be underlined) 300-3x a. What is the cost to remove 75% of the pollutant? b. What is the cost to remove 90% of the pollutant? c. What is the

    asked by GGIFT
  90. chemistry

    How many grams of NaN3 are required to produce 17.4 ft3 of nitrogen gas?

    asked by Kerry
  91. chemistry

    A gas that occupies a volume of 6.75L at 89.0atm will occupy what volume at 68.55mm Hg if the temperature remains constant?

    asked by Shannon
  92. Chemistry

    Determine the pH of 0.18M NH4Cl.

    asked by Katelynn
  93. History on WW1

    How did President Wilson use Russia's democratic revolution to gain support for the war?

    asked by Helga
  94. Physical science

    A man drinks a bottle of beer and proposes to work off it's 460 kj by exercising with a 20-kg barbell. If each lift of the barbell from chest height to over his head is through 60 cm and the efficiceny of his body is 10 percent under these circumstances,

    asked by Cindy
  95. physics

    a basketball of mass 0.5 kg is dropped from restfrom a height of 1.34m.it rebounds to a height of 0.6m. how much mechanicalenergy was lost during the collision with the floor?

    asked by emma
  96. English

    What is the difference between 'female friend' and 'girlfriend'? Does 'girlfriend' have any negative connotation?

    asked by rfvv
  97. 6th grade

    For every 25 mm of rain falling on the avarage home, 5000 L runs off the roof. Some people use barrels to collect this rain water. Cecila's town usually has 2625mm of rain each year. How many litres of water can be collected by using barrels?

    asked by Kelsey
  98. 8th grade math

    do you have anything on linear equations or categories on FCAT because I need to study. :)

    asked by caroline
  99. Algebra

    The sides of a square are one-third as long as the sides of an equilateral triangle. The difference between their perimeters is 20 centimeters. How long is each side of the triangle? Define your variables. Thx

    asked by Renee
  100. math214

    A box contains four red marbles, seven white marbles and five blue marbles. If one marble is drawn at random, find the probability for each of the following: (a) A blue marble drawn. _____________ (b) A red or a blue marble is drawn. _____________ (c)

    asked by alicia
  101. Calculus

    Please help me with this problem: Find the number c that satisfies the conclusion of the Mean Value Theorem. f(x) = x/(x + 4) [1, 8] i got to f'(x)= 4/(x+4)^2=(-1/60).

    asked by Sarah
  102. Geometry

    Suppose you are studying bacteria in biology class the table shows the number of bacteria after n doubling periods n(periods)[0 1 2 3 4 5] billions of bacteria [3 6 12 24 48 96] your teacher asks you to predict the number of bacteria after 8 doubling

    asked by Anonymous
  103. Chemistry

    Calculate the pOH and pH at 298K of soloutions having the following ion concentrations A.[OH-] = 1.0 X 10^-12 B.[OH-] = 1.3 X 10^-2

    asked by Anonymous
  104. Chemistry

    How do I distinguish between the limiting reactant and excess reactant in a chemical equation?

    asked by Ana
  105. English

    My new friends are all great. 1. How do you like them? 2. What do you think about them? 3. How do you feel about them? 4. What do you think of them? 5. How do you feel of them? 6. How do you think about them? (What is not correct and not the same as #1? I

    asked by rfvv
  106. science

    what is lava

    asked by nayaan
  107. college chem

    How much heat is absorbed by the calorimeter if the temperature change is 8 C and the calorimeter constant (Heat Capacity) is 3.3 J/K? Your Answer:

    asked by debra
  108. Health Care

    Create a list of 15 different medical terms contained within the article. Define each term; then, break each term down into its prefix, suffix, and word combining form, provide a definition of each word part

    asked by Sunshine262
  109. calculus

    alice is flying a kite. Her hand is three feet above ground level and is holding the end of a 300-foot-long kite, which makes an angle of 57 degrees with the horizontal. How high is the kite above the ground?

    asked by lisa
  110. college

    1.You want children to walk in the hallway.If they begin to run,the best thing to say to redirect them is:a."Stop running" b."Walk in the hallway" c."Running is for outside" d."We don't run"

    asked by vanessa
  111. math

    a shaded portion of a rectangle is 2/5 of the total area....How much of the total area is not shaded...A.5/2 B.3/5 c.5/3 d.3/10.

    asked by michelle
  112. Algebra II

    Find the complex zeros of the polynomial function: x4+5x2+4

    asked by I Need Help
  113. Chemistry

    Determine the pH of 0.18M NH4Cl.

    asked by Katelynn
  114. Chemistry

    4.54 g of hydrazoic acid ( HN3 ) is added to water to make a final solution of 504 ml. What is the pH of the solution ? Use Ka = 1.90 × 10−5

    asked by Chelsea
  115. chemistry

    How many grams of AgBr are produced from 2.50g of cobalt II bromide? Using this chemical reaction: AgNO3+CoBr->CoNO3

    asked by Anonymous
  116. math

    simplify 3/4 + 5/8 over 3/4 - 1/2

    asked by Anonymous
  117. education

    A major goal of a child's transition to a new program is to: a.meet new people b.learn new skills c.meet new teachers d.transfer skills

    asked by jay
  118. trig

    Solve the following for x, where 0 < x < 2 pi. 2 cos^2 x + cos x = 1

    asked by Sandy
  119. psychology

    It is the case that good communicators advance more quickly in the company.Which of the following would be the best revision of this sentence? a) "Good communicators advance more quickly in the company." b) "It is true that good communicators advance more

    asked by vedrana
  120. Earth Science

    Judging from the sizes of the before-and-after craters atop Mount St. Helens (Figs. 4.8 and 4.9 of the Lab book), which volcanic event appears to have been the more explosive, the last one before 1980, or that which occurred in 1980

    asked by Anonymous
  121. POS/110

    I need some help. I am doing a one day journal on how the federal and state bureaucracy affects my daily life. Can someone please give me several examples? I have a few things in mind, like the food I eat and how it is inspected by the FDA. Any suggestions

    asked by Sarah
  122. Business Management

    Your management team has been retained by a senior manager who is concerned about the effectiveness of his managers and their teams. He would like your team (the team of employees writing the guide) to develop a training guide on delegation. The training

    asked by Sherry
  123. English

    1. She was very slow at the beginning, but she didn't give up. (What is the opposite of 'at the beginning'? Is it 'at the end, in the end or by the end'?) 2. Wilma tried very hard to be able to walk again. (What is the function of 'to be able to walk

    asked by rfvv
  124. statistics

    what does 9E-4 mean? It came up as an answer to a problem i went through on my calculator

    asked by steve
  125. English

    There are many women in this world that display exclusively positive traits and behaviors. Those traits can be :caring, helpful, understanding, encouraging, respectful, lovable, thoughtful, etc. My question is : What ideas about women are reinforced by

    asked by Sara
  126. psychology

    During a group meeting when they are each reading a draft of their normal report,Madiha and Anne realize that sometimes they have used the word "there" correctly and sometimes the word should be "their".They use their word processor's "find" feature to

    asked by vedrana
  127. Biology

    I have a question: Name the differences in muscles between a weightlifter and long distance runner? A long distance runner has lean muscles but would you say weightlifters have bulk for muscles? I can't find a web site to help me. Any ideas. Thanks

    asked by Sue
  128. ALGEBRA

    please help me explain this in 50 words.. Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.

    asked by SAMANTHA
  129. Physics

    A solid disk rolls along the floor with a constant linear speed v. (a) Find the fraction of its total kinetic energy that is in the form of rotational kinetic energy about the center of the ball. Krot/Ktotal = ?

    asked by Ace
  130. Chemistry

    46.9 g of a substance at 90.8°C is added to 51.8 g of water at 24.8°C. The final temperature of the water and substance is 40.5°C. The specific heat of water is 4.184 J/g·°C. What is the specific heat of the substance? I think the equation that I need

    asked by Tiffany
  131. Physics

    A rectangular piece of gold is 3.1 cm long and 3 cm wide. Resistivity of gold is 2.4*10^-8. How deep is the piece when it displays a resistance of R = 1.65 μω for a current that flows along the depth-direction? I used R=(p*l)/A and solved for l. I got

    asked by Lily
  132. English

    I have a prompt for an English essay and it says, "In a well developed composition, identify the character, describe what the character questions about society, and explain why the character's questioning is important to the meaning of literature." It's

    asked by Ana
  133. English

    Type the prepositional phrases in the boxes. Kentucky bluegrass was brought to America from Europe. ____?____ _____?_____ i put (to) and (from) then i put (from) (europe)

    asked by nicky
  134. chemistry

    How much heat is absorbed by the calorimeter if the temperature change is 8 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

    asked by debra
  135. precal

    verify: tanx secx = -2tanx

    asked by john2
  136. Math

    a circular track runs around a park. there is a sidewalk that connects two points on the track that runs through the center of the park. the sidewalk is 100 ft. long. How long is the track to the nearest half foot?

    asked by Chris
  137. Math

    One of the world's fastest roller coasters is located in a theme park in Valencia, California. Riders go from 0 to 100 miles per hour in 7 seconds. Find the acceleration of the roller coaster during this time interval in miles per second squared.

    asked by Monica
  138. math

    a sample that is not representative of the entire population

    asked by taylor
  139. Chemistry

    I am reading through material for a recrystallization experiment, and I had a few things I wasn't sure about; - Why once filtered, should the recrystallization solution be allowed to cool slowly, undisturbed, rather than quickly? and -What makes a good

    asked by Natasha
  140. Pre Calculus

    complete the identity: sin^4 x-cos^4 x

    asked by moi
  141. math

    What is the answer to t=100(n+3)? Solving for N.

    asked by matt
  142. Spanish

    We are learning Indirect object pronouns and I need help with the following questions. Traduce las frases al espanol. 11. He asked her for more money. 12. I gave you your present. 13. She bought you a new dress. 14. He prepared dinner for us. 15. Musicals

    asked by Kelsey
  143. Physics

    A 15 μA current starts flowing in a circuit with a 3.0 μF capacitor of area 40 cm^2 at t = 0 s.(a) How fast is the voltage across the capacitor plates changing at t = 0 s? (b) Use the result of (a) to calculate the following at t = 0 s.(i) dφB/dt in

    asked by Sandhya
  144. survey of accounting

    1. A corporation issues $18,000,000 of 6% bonds to yield an effective interest rate of 7%. a) was the amount of cash received from the sale of the bonds more or less than $18,000,000? b) identify the following amounts related to the bond issue: 1) face

    asked by ravi
  145. business research

    The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this year’s students significantly different from the long-run average? At what alpha level would it be significant

    asked by joi
  146. Math

    Solve the inequality. Other than , graph the solution set on a number line. 12x - 3 > 3(3x - 9)

    asked by DK
  147. physics

    Calculate the magnetic field at the center of a wire square that consists of 120 loops and has sides of length 5 cm and carries a current of 0.7 A.

    asked by Sandhya
  148. Ashworth

    If it took 5 seconds to lift the crate,using a machine,what was the power rating of the machine.

    asked by Daquindre
  149. Accounting

    Assume a $4000 investment and the following cash flows for two alternatives. Under the payback method, which of the following would be concluded? a. Investment X should be selected b. Investment Y should be selected c. Investment X and Y provide the same

    asked by Anonymous
  150. education

    1.Transition planning for children with special needs should focus primarily on: a.maintaining continuity of services b.getting the child ready for school c.the family's needs d.the child's needs. My answer is d.the child's needs. Will someone please check

    asked by vanessa
  151. English

    Rewrite this fluently into 2 or 3 sentences. Don't use 'and' more than once and avoid using 'then'. I awoke in the darkness. I was in great pain. I was tied up. I heard the roaring of water. I heard thunder. I also heard sailors shouting. The whole world

    asked by Sara
  152. ETH

    What roles have politicians, Muslim groups, Christian groups, and others played in the development of this image?

    asked by Anonymous
  153. ALGEBRA

    Post your 50-word response to the following: Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.

    asked by SAMANTHA
  154. education

    A major goal of a child's transition to a new program is to: a.meet new people b.learn new skills c.meet new teachers d.transfer skills

    asked by vanessa
  155. History

    According to L. M. Bowers, what are some of the complaints made by the workers at the Colorado Fuel and Iron Company, and how does he claim they have addressed those complaints?

    asked by Taylour
  156. social studies

    I need help on these questions: 1.) What is the name of someone who sold wares and spread news in Colonial Times? 2.) What did children ages six to eight attend in the Colonial Times? 3.) Windows were made by soaking cloth in WHAT oil? 4.) What is the game

    asked by Brookelle
  157. Physic

    Ok so this question was posted before but I'm confused by the answer. The problem is: The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.87 m above the floor. When m1

    asked by Kelsey
  158. English

    There are many women in this world that display exclusively positive traits and behaviors. Those traits can be :caring, helpful, understanding, encouraging, respectful, lovable, thoughtful, etc. My question is : What ideas about women are reinforced by

    asked by Sara
  159. Geometry

    The perimeter of a rectangle is 76 feet. If the width is doubled and the length is halved, the new rectangle will have a perimeter of 62 feet. Find the dimensions of the original rectangle. Define your variables.

    asked by Albert
  160. Chem

    Is there an easy way to re-write PV=nRT so that it equates density with molar mass?

    asked by Peter
  161. Chemistry

    Could someone explain the reasoning for this? 6) Which of the following is a false statement about ALL reactions in equilibrium? a) Increasing temperature shifts the reaction toward the products in an endothermic reaction b) Temperature effects on the

    asked by Val
  162. English

    Some people can have really bad traits such as being dishonest, mean, strict, bossy, dirty, etc. What stereotypes about men are reinforced about these images? These types of people could easily tarnish their own reputations. Men with these types of

    asked by Sara
  163. Chemistry

    Copper has a specific heat of 0.387 J/g·°C. How much energy is required to raise the temperature of 140. g of copper from 17.5°C to 154.0°C?

    asked by Megan
  164. Chemistry

    What is the specific heat of a substance if 35.5 kJ are required to raise the temperature of 345 g of the substance from 69.0°C to 150.0°C?

    asked by Megan
  165. Chemistry

    94.0 g of a metal at 88.0°C are added to 55.0 g of water at 26.0°C. When the system reaches constant temperature, the temperature is 39.3°C. What is the specific heat of the metal? The specific heat of water is 4.184 J/g·°C.

    asked by Megan
  166. Psychology/Statistics

    Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students.

    asked by Charles
  167. Organic Chemistry

    Can you tell me what the systematic name for a compound which has a carbon attached to a phenyl, a double bonded oxygen, and a single bonded oxygen and then a 3 carbon chain is attached to the single bonded oxygen?

    asked by Max
  168. precal

    find the exact value of the expression: csc (tan^-1 ã3/3)

    asked by adam2
  169. ALGEBRA

    When solving a rational equation, why is it necessary to perform a check?

    asked by GGIFT
  170. precal

    use a right triangle to write the expression as an algebraic expression. assume that x is positive and in the domain of the given inverse trigonometric function. sin(sec^-1 ãx^2+ 25/(x))

    asked by adam2
  171. business

    Which of the following selections contains a fragment? If none of the selections contains a fragment, select "Correct." (Points: 5) To prepare for the 10K race. Eric eliminated greasy foods from his diet and began eating fresh fruits and vegetables. He

    asked by lea
  172. science

    what is lava q2 what r the three resource of nature

    asked by nayaan
  173. Pre-Cal(Please help)

    1) Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67 degrees 30'

    asked by Abbey
  174. math

    A)Round -7.86 up to the next integer. B) Round -0.04837 to the nearest hundredth. C)Round -437 down to the preceding ten. D)Estimate 64.2789 + 37.7825 to the nearest integer.

    asked by Anonymous
  175. precalculus

    find the exact value: cos^-1 (square root of 2 divided by 2)

    asked by john 2020
  176. English

    Can you check these sentences for me, please? Thank you very much in advance. 1) Beowulf and the Dragon wrestle amid sheets of fire. As the flames billow, Beowulf's companions rush away in terror. 2) Only one, Wiglaf, feels enough loyalty to come to the

    asked by Franco
  177. Phiysics

    Pulling up on a rope, you lift a 4.35-kg bucket of water from a well with an acceleration of 1.78 m/s2. What is the tension in the rope?

    asked by Jim
  178. Chemistry

    where does the n come from in a compound such as n-butane?

    asked by Val
  179. 6th grade

    what does an introduntion paragraph consist of

    asked by Anonymous
  180. Math

    Factor by introducing an appropriate substitution. 5y10 - 31y5 - 28

    asked by DK
  181. social studies

    a study of the causes of american revolution of 1776,the french revolution of 1789,and the Russian Revolution of 1917 best supports the generalization that revolution is most likely to occur when

    asked by kathy
  182. librarianship

    what kind of services the 21 century library can provide.

    asked by aliyu
  183. psychology

    You are in a group that feels very cohesive,so cohesive that it seems to agree readily at every step of project,without any lengthy discussion or conflicy.Sometimes you don't agree with decisions,but you do not say anything.Which of the following is the

    asked by vedrana
  184. chemistry

    how do I convert 17.4 cubic ft into liters?

    asked by Shannon
  185. librarianship

    what are those organisation that donate grant to libraries

    asked by aliyu
  186. spanish

    tu gran gusta en las cama mean?

    asked by melitussa
  187. Us after 1877

    Why would the Knights of Labor oppose child labor beyond the obvious reason that children should not be forced to work? What about their opposition to convict labor?

    asked by Lacy
  188. education

    Transition planning for children with special needs should focus primarily on: a.maintaining continuity of services b.getting the child ready for school c.the family's needs d.the child's needs

    asked by vanessa
  189. math

    do 5 + x and x + 5 represent the same expression? explain.

    asked by Cameron
  190. algebra

    How do you solve the expotential notation equation 120-6^2/4x8?

    asked by Jane
  191. ALGEBRA

    Beagleboy how do I explain that in 50 words? Post your 50-word response to the following: Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.

    asked by SAMANTHA
  192. English

    I forgot to include the following questions for you to check. Thank you very much. 7) The interviewee got together with two friends of him and they dressed up like a seventies pop group in Afro wigs and dark glasses. 8) His girlfriend had also arranged for

    asked by Franco
  193. psychology

    "Investors and their wives" is considered sexiest because: a)investors may be female b)not all investors are married c)"investors" refers only to woman d)business document should not mention people's lives outside work I doubt between A and B?Can you help

    asked by vedrana
  194. statistics

    what is an example of a statistical abuse in the media during the past week?

    asked by cortez
  195. language arts

    what are sentences for Sulkily, Certainty, Indifferent, Undoubtedly, Heartily, protruded, & Loathe?

    asked by priscilla
  196. math

    In how many different ways can 8 riders be matched up to 8 horses? Explain answer please.

    asked by Mitchell
  197. language arts

    what are sentences for Indifferent, Undoubtedly, Heartily, Protruded, & Loathe?

    asked by priscilla
  198. CRT205

    (I did not get some answers correct on this categorizing fallacies assignment. It was graded but not with the correct answers. Can someone help me by telling me which type of fallacies the below statements are please so I can understand better. Thank you!)

    asked by Zoe
  199. economics

    Gasoline and beer are monopolistic competition. But why the prices of gasoline always changes while beer's price is constant?

    asked by uno
  200. language arts

    Whats a sentences for indifferent?

    asked by priscilla perez
  201. precal

    simplify: csc²x secx

    asked by john2
  202. language arts

    do you know a sentence for undoubtedly

    asked by priscilla p.
  203. CRT/205

    what is the premises and the conclusion of this argument? since it is the very nature of terrorism not only to cause immediatw damage but also to strike fear in the hearts of the population under attack, on might say that the terrorists were extraordinary

    asked by keshia
  204. 9th grade

    What are the similarities of ozone depletion and uv light

    asked by adriana
  205. Biology

    What are two different ways that genes are identified in prokaryotic versus eukaryotic genomes.

    asked by Jess
  206. Temple College

    had some Psychology homework resereching a female Psychiatrist named Viola Brody. but when i reaserch her online through all the major search engines i come up empty. all i've found so far is that she wrote a book witch i already knew. can you help me with

    asked by Joshua
  207. math

    how did you get that answer from the question renee posted

    asked by josh
  208. SOCIAL STUDIES

    In the 1800's, what was being used o pull the canal boats?

    asked by Happy Face
  209. science

    a thick,shar-edged gray cloud is probably made of ? not?

    asked by desjanna
  210. 4gr math

    how many degrees cooler is a temperature of 34.f to a temperature of 47.f

    asked by jojo
  211. EXCEL

    I need New Perspectives on Microsoft Office 2007, First Course , Premium Video Edition's In Excel Part Tutorial 2 Exercomp Sales Report Review X410 Case 1 Frosti case 2 GrillRite

    asked by MP
  212. 8th grade

    what were two goals of american diplomacy in the 1930s?

    asked by molly
  213. math214

    There were seven nominees for president and four nominees for vice president. In how many ways can the state be chosen?

    asked by alicia
  214. math214

    a) Find 28° 29’ 46” - 16° 48’ 59’’ (b) Express 5.4° in terms of - degrees - minutes - seconds

    asked by alicia
  215. Chemistry

    How do I distinguish between the limiting reactant and excess reactant in a chemical equation?

    asked by Ana
  216. sicence

    Select all of the answers that apply. A map _____. 1)is a representation of the earth's surface 2)is a portable document describing an area 3)can provide data such as migration trends, directions, and rock composition 4)provides all of the information

    asked by george
  217. biology

    when decomposers are unable to break down industrial wastes,they become more concentrated as they move through the food chain.this process is called biological ? can anyone please help me.

    asked by me
  218. GEOGRAPHY

    1)The branches of rivers within a delta are called:(a)tributaries(b)confluences(c)distributaries(d)meanders 2)All of the following are conditions that m,ust be met so that deltas may form except:(a)steep drop in the sea floor(b)area protected from strong

    asked by Devaughn
  219. math

    ya but where did you get the 4x? SORRY!

    asked by josh
  220. math

    What is the solution set of the given equation? 4y - 6y + 9y = -2 A){-2/11} B){-2/7} C){2/7} D){2/11}

    asked by nicky
  221. precal

    complete the identity: sin^4x-cos^4x

    asked by adam2
  222. Environmental Protection

    Looking for some links to articles on the Environmental Protection so that I can develop a policy statement- - Basic Policy Statement Justification for the policy Those to whom the policy applies

    asked by Norma
  223. 2nd grade english

    What is the hidden word in these letters. tiningtesre Thanks.

    asked by MONA
  224. math

    OH,,, well i found out what i needed.. THANKS FOR YOUR HELP SO FAR!!!! :)

    asked by josh
  225. environmental science

    what is a example of mutualistic symbiosis between the organisms of fungus and a photosynthetic alga?

    asked by jess
  226. English

    I am working on questions from the book "To Kill a Mockingbird" and i need help with this question: 1. Using Jem's description of Boo, how does Harper Lee makes it clear that we are looking through a child's eyes?

    asked by Donut
  227. computer science

    I need help with c++ on the codeblocks. when i run the program with lines of code, i get this warning. warning: command line option "-Wmain" is valid for C/ObjC but not for C++ can anyone tell me what this mean???

    asked by jaylin
  228. Algebra

    how to do a common monomial factor?

    asked by CMF
  229. English

    In your opinion, does the Fairness Doctrine violate freedom of the press or freedom of speech? Why or Why not?

    asked by Betty
  230. statistical applications

    when is random sampling not the best approach to sample selection?

    asked by anette
  231. statistics

    survey revealed two percent of students did not select stat. for biz. suppose we select a sample of 10 students. -what is the probability that 3 students selected stat. for biz? -how many students would you expect to select stat.for biz?

    asked by nora
  232. math

    Evaluate 96 96___ 9-6

    asked by Janae
  233. logic

    3. Translate the following argument into symbolic for, and determine whether it's logically correct by constructing a truth table. -If the team wins, then the team remains in the playoffs. If the team stays in the playoffs, then the championship is within

    asked by bill
  234. trigonometry

    2. two look out situations, which are 25 miles apart along the coast on a north-south shoreline, spot an approaching yacht. One lookout station measures the direction to the yacht at N33 degrees E, and the other station measures the direction of the yacht

    asked by bill
  235. science

    okay after the diver jumps foward from the diving board,the force of gravity will accelerate the diver PARALLEL to the direction of motion , is the uppercase true or false?

    asked by jack
  236. Marine Science

    I've searched and read so many things but i have yet to find the answer that my teacher is looking for. What percentage of energy is transferred from a producer to a: (A) secondary consumer, (B) tertiary consumer, (C) quaternary consumer?

    asked by Christin
  237. early childhood education

    1.A child's noncompliance is often due to all of the following EXCEPT: a.too many rules b.not enough choices c.poor ability to understand d.a bad personality

    asked by vanessa
  238. math

    i don't get this circle a has a diameternof 10 feet. rounded to the tenths place, the are of circle a is what?

    asked by Deanna
  239. Physics Tough question!

    A pond has the shape of an ice cream cone with the tip slices off and has a depth of 5.00m. The atmospheric pressure above the pond is 1.01 *10^5 Pa. The circular top surface (radius = R2) and circular bottum (radis = R1) of the pond are both parrallel to

    asked by ALan