Questions Asked on
February 13, 2010

  1. Science

    As early as 1938, the use of NaOH was suggested as a means of removing CO2 from the cabin of a spacecraft according to the following reaction : NaOH+CO2 -> Na2CO3 + H2O. If the average human body discharges 925. 0 g of CO2 per day how many moles of NaOH

    asked by Kara
  2. Physics 11th grade

    Squaw Valley ski area in California claims that its lifts can move 48700 people per hour. If the average lift carries people about 185 m (vertically) higher, estimate the maximum total power needed. (Assume an average mass per person of 70 kg.)

    asked by Luricela
  3. Chem

    The vapor pressure of CCl3F at 300K is 856torr. If 11.5g of CCl3F is enclosed in a 1L container, Will any liquid be present? If so, what mass of liquid?

    asked by RM1031
  4. Chemistry

    A cell is set up with copper and lead electrodes in contact with CuSO4(aq) and Pb(NO3)2(aq), respectively, at 25˚C. The standard reduction potentials are: Pb2+ + 2e- --> Pb E˚=-0.13 V Cu2+ + 2e- --> Cu E˚=+.34 V If sulfuric acid is added to the Pb(NO3)2

    asked by Anonymous
  5. Science

    If 2.50 mol of copper and 5.50 mol of silver nitrate are available to react by a single replacement:Cu + 2AgNO3 -> Cu(NO3)2 + 2Ag What is the amount in moles of each product formed?

    asked by Kara
  6. Physics

    A 74.0 kg firefighter climbs a flight of stairs 12.0 m high. How much work is required?

    asked by Luricela
  7. pseudocode programming

    Develop an algorithm or write pseudocode to determine if a citizen is eligible to vote. The criteria for eligibility are that the citizen must be 18 or older and must not be a convicted felon. The algorithm must continuously accept as input only the names,

    asked by Janeille
  8. business letter

    can you check for me? Thanks Assigment: write a business letter according to the background. Background:Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital.

    asked by Ruby
  9. physics

    You push a box along the floor against a constant force of friction. When you push with a horizontal force of 75 N the acceleration of the box is 0.55 m/s2; when you increase the force to 85 N the acceleration is 0.78 m/s2. (a) Find the mass of the box. kg

    asked by janie
  10. 11th grade

    (a) What is the minimum work needed to push a 1150 kg car 240 m up a 17.5° incline with zero friction? (b) What is the minimum work needed if the effective coefficient of friction is 0.20?

    asked by Luricela
  11. physics

    A police officer in hot pursuit drives her car through a circular turn of radius 305 m with a constant speed of 83.5 km/h. Her mass is 55.0 kg. what are the magnitude and the angle of the net force of the officer on the car seat?

    asked by rabih
  12. calculus

    A trough is 15 ft long and its ends have the shape of isosceles triangles that are 4 ft across at the top and have a height of 1 ft. If the trough is being filled with water at a rate of 14 ft^3/min, how fast is the water level rising when the water is 8

    asked by Gabe
  13. physics

    Estimate the magnitude of the electric field in a cell membrane with a thickness of 8nm

    asked by jamie
  14. Finite Math

    If the life in years, of a television set is normally distributed with a mean of 46 years and a standard deviation of 4 years, what should be the guarantee period if the company wants less than 3% of the television sets to fail while under warranty?

    asked by Maria
  15. Geography

    #53. In an essay, discuss the causes of discontent between Catholic and Protestants in Ireland and the significant events in this drama. Be sure to include dates throughout your essay in order to create a timeline of the events. my answer: Ireland’s

    asked by y912f
  16. Computers

    Problem-Solving 1. Develop an algorithm or write pseudocode to determine if a citizen is eligible to vote. The criteria for eligibility are that the citizen must be 18 or older and must not be a convicted felon. The algorithm must continuously accept as

    asked by Janeille
  17. 11th garde physics

    A grocery cart with a mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20° angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 17 m long. a)work done by the

    asked by Luricela
  18. Chemistry

    A cell is set up with copper and lead electrodes in contact with CuSO4(aq) and Pb(NO3)2(aq), respectively, at 25˚C. The standard reduction potentials are: Pb2+ + 2e- --> Pb E˚=-0.13 V Cu2+ + 2e- --> Cu E˚=+.34 V If sulfuric acid is added to the Pb(NO3)2

    asked by Anonymous
  19. physics

    When you push a 1.95 kg book resting on a tabletop it takes 2.40 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between

    asked by janie
  20. Statistics

    In a Gallup poll of 1,038 adults, 540 saud that second-hand smoke is very harmful. What is the percentage of adults who said second-hand smoke is very harmful?

    asked by Liz
  21. physics

    The vector position of a 3.80 g particle moving in the xy plane varies in time according to the following equation. r1=(3i+3j)t+2jt^2 At the same time, the vector position of a 5.35 g particle varies according to the following equation. r2=3i-2it^2-6jt For

    asked by ucieng
  22. English composition

    I am working on an argumentive essay. My argument is to add a pick up lane in front of my son's elementary school.I am finding it dificult to come up with the right words for my topic and the first maint point. Can somebody get me started? Please.

    asked by Debre Rolon
  23. Math214

    Jane has two tennis serves, a hard serve and a soft serve.Her hard serve is in (a good serve) 50% of the time, and her soft serve is in (good) 75% of the time. If her hard serve is in, she wins 75% of her points. If her soft serve is in, she wins 50% of

    asked by alicia
  24. 11th grade Physics

    A car does 6.0 104 J of work in traveling 2.6 km at constant speed. What was the average retarding force (from all sources) acting on the car?

    asked by Luricela
  25. Biology

    38. Mitosis and meiosis are the two different ways cells divide. They both share common characteristics and processes, but differ in some very important ways. I answered part A and B of this, but I need help with C: c. Why is it important for chromosomal

    asked by mysterychicken
  26. physics

    Find the velocity v and position r as functions of t for a particle of mass m which starts from rest at x=0 at time t=0 and subject to the following forces: F=Fo F=Fo +bti F=Fo coswt F=kt^2

    asked by Matthews
  27. how to..

    how to answer this question ? describe how someone could improve the following areas of fitness in the pool. 1.cardio cascular, 2.muscle strength, 3.muscular endurance. what does this mean ? how do i answer this?

    asked by james
  28. chemistry

    If 600 mL of 1.05 M aqueous CaCl2 and 720 mL of 0.792 M aqueous Na3PO4 are reacted stoichiometrically according to the balanced equation, how many milliliters of 0.792 M aqueous Na3PO4 remain? Round your answer to 3 significant figures.

    asked by eng
  29. English

    Can you check the following sentences for me, please? 1) Last year my brother and I went for a ride on our motorbikes (Can you also say: "I went for a motorbike ride with my brother?) 2) We were riding on a digged up road. (how can I say that the road was

    asked by Franco
  30. Math

    I posted this problem last night and someone answered. I followed all the steps that this person told me to do and I don't get the right answer. The right answer is suppose to be $23.54. What am I doing wrong? For groups of four or more diners, many

    asked by Lana
  31. chem

    Given: 3H2(g) + N2(g) 2NH3(g) If the reaction starts with 0.500 mol of H2, how many atoms of hydrogen in the compound NH3 would you expect to make?

    asked by kp
  32. Math!

    DigiCom has decided to purchase products with a list price of $503.60 and a trade discount of 40%. What is the amount of discount on the products? A, discount amnt d, discount rate L, list price A=dL A=(.40)(503.60) A=201.44 What is the net price of the

    asked by Tharaka!
  33. Fin

    Midland Chemical Co is negotiating a loan from Manhattan Bank and Trust. The small chemical company needs to borrow $500,000. The bank offers a rate of 8¼ percent with a 20 percent compensating balance requirement, or as an alternative, 9¾ percent with

    asked by Tim
  34. math

    One mile is equal to: A} 1.61 kilometers B} 3.52 kilometers C} 0.91 kilometers D} 2.34 kilometers

    asked by matty
  35. chemistry

    When 0.667 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 108C 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 blasting
  36. CALCULAS

    POLAR EQUATION OF INWARDLY SPIRALING SPIRAL

    asked by YAMNA
  37. calculus

    evaluate each limit, if it exists Lim as x approaches -2 (x^4 - 16) / (x+2)

    asked by Anonymous
  38. Profit & Loss

    how do i calculate this problem? A and B are in partnership sharing profits and losses in the ratio 3:2 respectively. Profit for the year was $86,500. The partners’ capital and current account balance at the beginning of the year: Current accounts – A

    asked by Peaches
  39. Math

    A customer purchased a car and financed $16,000. The customer borrowed part of the money from a bank charging 10% annual interest and the rest from a credit union at 8% annual interest. If the total interest for the year was $1,390 how much was borrowed

    asked by Heather
  40. geo

    what is china's population density?

    asked by anna
  41. Statistics

    Sample salaries (in dollars) of high school teachers are listed. Find the sample mean and standard deviation of the data. 49,632 54,619 58,298 48,250 51,842 50,875 43,219 49,924

    asked by bridget
  42. health

    can anyone help me understand the difference between programmed and unprogrammed theories of senescence. Guess it would help me so much if I even knew what it was? help please

    asked by april
  43. spanish

    how do you say magical in spanish?

    asked by tdb
  44. helpmplz

    which ststement does NOT describe prescripitivists? A. Language should be recoreded,not judgement. B. Language use should follow strict rules. C. Language use should never change D. Language use should be judged and evaluated. .The answer i choose is c.

    asked by brit brat
  45. Physics

    A charged disk of radius R that carries a surface charge density σ produces an electric field at a point a perpendicular distance z from the center of the disk, given by: Edisk = (sigma/2e0) x(1-(z/(square root(z^2 + R^2)) Consider a disk of radius 10 cm

    asked by Susie
  46. english composition

    i have a hard time understanding to write essay and start paragraph

    asked by katie
  47. ecuador

    the currencey used in ecuador is the: A} pero B} sucre C} kina D} pula A little help here plz lol

    asked by leslie
  48. chemistry

    How much heat is required to raise the temperature of 200 g CH3OH from 20 to 30 degrees and then vaporize it at 30 degrees. The molar heat capacity of CH3OH is 81.1 J/Mol/K. Okay...the answer is approximately around 254. It was a homework problem. The

    asked by joseph
  49. Math/Precal

    what is the first term of an arithmetic sequence if the 7th term is 21 and the 10th term is 126

    asked by Nancy
  50. Finance

    3. Describe the general relationship between net income and net cash flows from operating activities for the firm.

    asked by Anonymous
  51. EA

    Where would you most likely find a token economy as a form of classroom management? A) RRP approach B) Contract approach C) Contingency management approach D) RIP approach

    asked by Darla
  52. calculus

    determine the slope of the tangent for the following function. Then determine the equation of the tangent line at x=1 F(x) = x F(x) = x^4

    asked by Anonymous
  53. hca 210

    generally hospiats are categorized as non pfofit, for profit and governmental.identify at least one example of each from your community or state.

    asked by sara
  54. geo

    what are the human characteristics in china?

    asked by anna
  55. Pre Algebra

    Which product equals 3t-12? a. 4(t-3) b. (4-t)3 c. 3(t-4) d. (3-t)4

    asked by Abigail
  56. geo

    what is china's population density patterns ?

    asked by anna
  57. Math

    What is the excluded value? y^2-y+5/y+4

    asked by Ann
  58. Physics

    A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 19.0 m/s. The cliff is h = 50.0 m above a flat horizontal beach. With what speed and angle of impact does the stone land?

    asked by Ana
  59. Physics

    Tom the cat is chasing Jerry the mouse across the surface of a table 1.1 m above the floor. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 6.4 m/s. Where will Tom strike the floor? A)3.03m from the

    asked by Ana
  60. college

    how do you start with an essay with contrast and compare about your life now and five years ago ?

    asked by katie
  61. chemistry

    How much heat is required to raise the temperature of 200 g CH3OH from 20 to 30 degrees and then vaporize it at 30 degrees. The molar heat capacity of CH3OH is 81.1 J/Mol/K. Okay...the answer is approximately around 254. It was a homework problem. The

    asked by joseph
  62. psycholoogy

    social heritage among ----------- is zero

    asked by fill in the blanks
  63. statistics

    Number sampled is 1,000 and mean is 7.2 on a scale from 1-10 how do I determine standard deviation. Can we answer this with using the sampling distribution of the sample proportion?

    asked by mark
  64. ethics

    Just have a question if to if anyone can show me how to set up a APA citation reference and a in-text citation...... Also how to set up APA format..I read the directions and still get it wrong, so if anyone knows how to simplify it for me I would

    asked by stephanie
  65. algebra

    i have no less than 6,000 to spend and no more than 10,000 write an inequality to show how much I have to spend

    asked by charlyn
  66. Chemistry

    Calculate the volume ( L ) of the solute water and the volume ( L ) of the solvent tetrahydrofuran that should be added to generate 4.73 kg of a solution that is 1.36 m water.

    asked by andy
  67. sci 230

    are marine turtles unique to the belize's barrier reef? if not, could someone please tell me where to find some example of some that are?

    asked by Patiance
  68. calculus

    evaluate the limit Lim as x approaches 3 (1r3 - 1rx ) / (x - 3)

    asked by Anonymous
  69. college

    Write a 350- to 700-word response describing three case law decisions from the chapter you believe have the most substantial impact on policing today.

    asked by tiana
  70. maths

    Please could you help me in finding a function rule for the following table: x: 2 3 4 f(x):2 1 0

    asked by bindiya farswani
  71. mathematical app's

    having problem with question47. Darrell owns a consulting business and has an estimated annual income of $63,000. his social security tax is 12.4%, medicare is 2.9%, and his estimated federal income tax rate is 22%. how much quarterly estimated tax must

    asked by Diane
  72. English

    I have a question about Shakespeare. I know that he wrote many plays, (about 37) and that they all could be classified as comedy, tragedy or histories, but Which type of classification is often cited with Shakespeare's greatest plays?

    asked by Danielle
  73. geo

    what are the human characteristics in china?

    asked by anna
  74. stastics

    The first clzxx in a relative frequency table is 50-59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?

    asked by Liz
  75. accounting

    what would happen if a company had both interest payments and lease payments

    asked by sheilea
  76. question

    what does population density mean? i searched it up on the dictionary. com , but i still do not understand

    asked by danny
  77. Oganizational Communications

    I need an example of an organizational writer that is unethical in his/her in writing. Can somone please steer me in the right direction? Thanks in advance!

    asked by Carmin
  78. statistics

    The first class in a relative frequency table is 50-59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?

    asked by Liz
  79. HCS 427

    How does human resource management affect the success of a healthcare organization? What would you like to see human resources do for you as a manager or staff member?

    asked by Liz
  80. geo

    china's immigration and emigration patterns

    asked by anna
  81. geometry

    Which geometric figure could not be drawn using both perpendicular line segements and parallel line segements? A.a pentagon B. a rectangle C. a trapezoid D. a triangle IS the answer(D) a triangle

    asked by Marie
  82. geo

    china's immigration and emigration patterns

    asked by anna
  83. Corporate Communications

    I need an example of Corporate writing that presents false information that could potentially impact public safety. Thank you.

    asked by Shelly
  84. Physics

    Ammeter 1 reads 0.20 A. a. What should ammeter 3 indicate? b. What should ammeter 4 indicate? Given: RA = 22-OHM RB = 13-OHM A1 = 0.20 A Ammeter 2 reads 0.15A. a. Find the voltage across the 22-ohm resistor? b. Find the voltage across the 15-ohm resistor?

    asked by Priscilla
  85. geo

    china's political information

    asked by anna
  86. Reproduction

    What would the biological effect of severing the portal blood vessels in the stalk of a pituitary gland? Would the release of hormones by the posterior pituitary gland be affected by severing the portal blood vessels?

    asked by Beth
  87. Reproduction

    How does a glycoprotein stimulate genomic and metabolic change in a cell?

    asked by Eliz
  88. Ecology

    How does the skin and life cycle of a frog help indicate the health of local ecosystems?

    asked by Emily
  89. geo

    what are china's major imports and exports?

    asked by anna
  90. PSYC

    Of the three classifications of human strengths/developmental assets, which do you think would be most valuable for you? Describe why you think so.

    asked by Tanyia
  91. statistics

    If sample number is 1,000 and mean is 7.2 on a scale from 1-10 how do I determine standard deviation.

    asked by mark
  92. English

    Can you please check the following sentences for me, please? Thank you 1) The first inhabitants of Great Britain were the Iberians. They were followed by the Celts. 2)) They were organized in tribes (or used to live in tribes?) and were skilled (a synonym?

    asked by Franco
  93. spanish

    how do you say "he loved" in spanish?

    asked by tdb
  94. Math

    Sue, got a raise at work her current wage was $32.500 a year her new wage is 35.500 a differents of $3.000 per year how do I come up with her hourly wage she is paid is every 26 weeks?

    asked by Cathy
  95. chemistry

    A colloid is the dividing line between solutions and heterogenous mixtures. What is the exact particle size of a colloid compared to the exact particle size of a solution. A. over 1000nm compared to 0.1-1nm B. 1-1000nm compared to 0.01-1nm C. 0.10-1nm

    asked by CC
  96. college

    I shall argue that this reaction was irrational to a great extent and that to that extent Americans unwittingly cooperated with the terrorists in achieving a major goal: which one is premise and the conclusion?

    asked by vivian
  97. health

    What other challenges do case workers face when working with placement of the elderly in long-term care facilities?

    asked by ladiipassion
  98. Math

    For the following, use the inverse relationship between logarithms and exponentials to determine x. log2(x^2−2x)=3 Solution Set:_____________? I don't know how to do this question at all :( Please help and show the work as well so that I can learn!

    asked by jh
  99. HCA 220

    I need help with my presentation I have to do 10 to 12 slides that summarizes the processes of digestion, respiration, and circulation. I have asked for help from my professor but she said just to look at my course syllabus but still don't understand on

    asked by kasey
  100. Accounting 1

    May 1 Danny and Mary Jane deposited $50,000 into business checking account May 1 Rented theater building for shows – paid 6 months rent up front - $24,000 May 1 Purchased six-month insurance policy to cover rented building and customers - $3,000 May 1

    asked by big b
  101. WRITING SKILLS

    Which of the following is the best opening sentence for a business letter that you want to sound fairly informal? A. I am in receipt of your order of February 10. B. This letter is to make you cognizant of our receipt of your order. C. Your order of

    asked by alia
  102. ecuador

    nd im paying for the books im a homeschooler

    asked by matty
  103. physics

    How do you measure a unidentified capacitor when you have a identified one as well as voltmeter, a ammeter, a resistor and a light bulb as well as 3 1,5 batterycells. You have a conductinhcords?

    asked by Lizard
  104. Science

    What is Analysis?

    asked by Jeremy
  105. Science

    How can i teach my preschoolers the concept of soluble and non soluble materials?

    asked by rane
  106. Math

    I'm completely confused, please help explain how my teacher got this answer. How many board feet is the walking surface of my deck? How many boards are installed? This is the key she gives: 2” x 6” x 16’ long… 24’ / 6” = 24’ / .5’ = 48

    asked by Dale
  107. Finance

    Has the buildup in plant and equipment been financed in a satisfactory manner? Briefly discuss .

    asked by Anonymous
  108. Health,Safety,andNutrition

    A condition often brought on by an allergic reaction is: A: anemia B: diabetes C: asthma D: seizures I picked C Thanks

    asked by Barb
  109. prealgebra

    3/5y+8 ------ 3/5y-8 simplify

    asked by nick
  110. prealgebra

    3/5y+8 ------ 3/5y-8 simplify

    asked by nick
  111. Finance

    Has the buildup in plant and equipment been financed in a satisfactory manner? Briefly discuss .

    asked by Anonymous
  112. Physics

    An army of armadillios is attacking Cosine Castle where the coyotes reside. If an army must clear the 45 meter walls by 5 meters, at what angle must they set their cannons (from the horizontal) in order to fire inside the castle walls? The cannons fire

    asked by HELP
  113. calculus

    evaluate the limit: Lim as x approaches 2 (1r3 - 1rx) / x-3

    asked by Anonymous