Questions Asked on
September 2, 2010

  1. Mole fraction of a vapor pressure?

    If 0.380 mol of a nonvolatile nonelectrolyte are dissolved in 3.00 mol of water, what is the vapor pressure P(H2O) of the resulting solution? The vapor pressure of pure water is 23.8 torr at 25 C. I got this answer correct: 21.1 torr A solution is composed

    asked by Sar
  2. Chemistry

    A gas has a density of 1.25 g/L at STP. What is its molecular mass?

    asked by Alexis
  3. precal

    The Census Bureau reported that the population of the United States in 1995 was 262.9 million. Referring to the statistics on the second page of the Background Information for Project 4, how many crimes committed in 1995 occurred in the South? The

    asked by Anonymous
  4. Mole fractions in a liquid mixture:

    Acetone, C3H6O, and ethyl acetate, C4H8O2, are organic liquids often used as solvents. At 30 degrees C, the vapor pressure of acetone is 285 mm Hg and the vapor pressure of ethyl acetate is 118mm Hg. the solution is prepared at 30 degrees C by dissolving

    asked by Sar
  5. Math - 4th grade

    Draw and label the segment RT. Then what is another name for RT?

    asked by Mia
  6. precal

    A petri dish contains only two bacteria. The bacteria divide every half hour. How many bacteria will exist after 3 hours? I thought it'd be 12, but apparently not.

    asked by Anonymous
  7. Working With Conduit

    The internal area of 2-inch IMC is?

    asked by Ben R.
  8. chemistry

    A sulfuric acid solution containing 571.6g of H2SO4 per of solution has a density of 1.329g/cm3. Calculate (a) mass percentage (b)mole fraction (c) molality (d) molarity of H2SO4 in this solution.

    asked by Anonymous
  9. Physics

    Consider a skateboarder who starts from rest at the top of a 14.6 m-long ramp that is inclined at an angle of 13.0° to the horizontal. Assuming that the skateboarder's acceleration is g sin 13.0°, find his speed when he reaches the bottom of the ramp in

    asked by Fallon
  10. Science

    What physical process is being observed using spectroscopic measurements in Beer's Law experiment?

    asked by Candice
  11. Vectors

    Given the vectors below, determine the resultant and the equilibrant using trigonometry. Show all your steps. 330.0 newtons @ 125 degrees 250.0 newtons @ 60.0 degrees

    asked by Victor
  12. precal

    You can find the size of a population after t years using the formula N = No(1 + r)^t where No is the initial size of the population, N is the final size of the population, r is the rate of growth or decay per time period, and t is the number of time

    asked by Anonymous
  13. Chemistry

    For each of the following, write a net ionic equation (modeled above). Wherever there is a precipitate, state the name of the precipitate (e.g “lead iodide” from above). Pop onto the net and see if you can find a description of the physical properties

    asked by Noelle
  14. vocabulary

    a group of similar things together is called?

    asked by Tim
  15. Chemistry: Raoult's Law

    If 0.380 mol of a nonvolatile nonelectrolyte are dissolved in 3.00 mol of water, what is the vapor pressure P(H2O) of the resulting solution? The vapor pressure of pure water is 23.8 torr at 25 C. I got this answer correct: 21.1 torr A solution is composed

    asked by Sar
  16. physics

    Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1100 m due east and then turns due north and travels another 1430 m before reaching the campground. The second cyclist starts out

    asked by Anonymous
  17. Physics (Circular Motion!!)

    Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 30.0 s to speed up from rest to its top speed of 1 rotation every 1.10 s. the astronaut is strapped into a seat 7.40 m from the axis. A) What is the

    asked by George
  18. 7th grade

    list 10 carees in home economics

    asked by sharla
  19. History/115

    Q: What were the negatives of the new market economy? What were the positives of the new market economy? How did the creation of a single market economy shape American values and the economy of today?

    asked by Johanna
  20. CHEM

    A 60.0 sample of water is heated to its boiling point. How much heat (in ) is required to vaporize it? (Assume a density of 1.00 .)

    asked by Anonymous
  21. algebra

    The base of a triangle is 3cm grater than the height. The area is 14cm^2. Find the height and length of the base. Please show how you dervied at your answer.

    asked by jackie
  22. physics

    An engineer of a passenger train traveling at 25.0 m/s sights a freight train whose caboose is 200m ahead on the same track. The freight train is traveling at 15.0 m/s in the same direction as the passenger train. The engineer of the passenger train

    asked by ami
  23. UNIVERSITY COMPOSITION AND COMMUNICATION I

    write 9 sentences about financial planning. Each sentence must demonstrate a different verb tense (so, only use each tense once). For each sentence, identify the subject, the verb, and the verb tense demonstrated. In order to receive full credit, you must

    asked by dedo
  24. ap us history

    In the 17th century, New England Puritans tried to create a model society. What wew their aspirations, and to what extent were those aspirations fulfilled during the 17th century?

    asked by Taliyah
  25. Vectors

    Two vectors, A and B, are added by means of vector addition to give a resultant vector R. The magnitudes of A and B are 9 m and 8 m, respectively, and they can have any orientation. What are the maximum and minimum possible values for the magnitude of R?

    asked by Victor
  26. Public finance

    Use utility theory explain why people ever leave all- u- can- eat buffets

    asked by Latasha
  27. English

    1. I do math, science, and English homework every day. 2. I do much / a lot of homework every day. 3. I do much homework every day such as math homework, science homework, English homework, Chinese characters homework, etc. (Are they all grammatical?)

    asked by rfvv
  28. algebra

    An airplane flies 750 miles due west in 1 1/2 hours and 750 miles due south in 2 hours. What is the average speed of the airplane?

    asked by Mindy
  29. history WWI

    I don't understand this question: US ships were kept out of North Sea (which had mines) put by Britian. Was Wilson being inconsistent? I don't understand, Is the question asking if Wilson was inconsistent about keeping US ships out of North Sea or

    asked by Amy~
  30. SCIENCE

    The smallest of the earth's oceans is the _______ Ocean a) Pacific b) arctic c) indian d) atlantic e)lagon B

    asked by pam
  31. history WWI

    the question asks me to explain why British blockade did or did not make Germany to continue submarine warfare. I thought it was "did" because it made Germany want to continue the warfare ? not sure

    asked by Amy~
  32. science

    A team of 6 scouts plans to cross a lake on a raft they designed. The scouts have wooden beams with an average relative density of 0.80. The beams measure 30cmx30cmx3m. The average scouts' mass is about 65kg and for their safety, they want the top of the

    asked by samantha
  33. Algebra

    MathMath thank for showing me my mistake. Bayside Insurance offers two health plans. Under Plan A, Sam would have to pay the first $200 of his medical bills, plus 35% of the rest. Under Plan B, Sam would pay the first $230, but only 20% of the rest. For

    asked by Norma
  34. physics

    A team of 6 scouts plans to cross a lake on a raft they designed. The scouts have wooden beams with an average relative density of 0.80. The beams measure 30cmx30cmx3m. The average scouts' mass is about 65kg and for their safety, they want the top of the

    asked by mikey
  35. geometry

    The length of a rectangle is 1 meter less than three times the width, the perimeter is 46 meters.

    asked by ty
  36. french

    Comparez -les Example ;Michele est paresseuse. Agnes est travailleuse. Michele......[travaille]..>Michele travaille moins que Agnes. 1]Alain est bavard .Paul est timide--Alain.....[parler]. 2]Marie est triste. Jacqueline est gaie ->Marie......[s'amuser]

    asked by babs
  37. Science

    A 5.0ml aliquot of a sample was transferred to a 25.0ml flask and acidified by addition of 2.5ml of 0.1M HClO4 and diluted to mark. 1.0ml of that solution was mixed with 5.0ml of 1 X 10-4M AYR(Aluminum)dye and 15.0ml ethanol in a 25.0ml flask and diluted

    asked by Eileen
  38. 6th grade

    Simplify the following expression: 84/7(4-1)

    asked by pat
  39. algebra

    Mr. Anders and Ms. Rich each drove home from a business meeting. Mr. Anders traveled east at 100 Kilometers per and hour and Ms. Rich traveled west at 80 kilometers per hour. In how many hours were they 100 kilometers apart?

    asked by Mindy
  40. History WWI

    the question is : would a "visit and search" policy be possible for the Germans? (this is about the unrestricited submarine warfare) I thought yes but then ... I don't know Another source said that it was not possible

    asked by Amy~
  41. math (college algebra)

    Ok I have two questions I have NO CLUE how to complete on my homework. Please help ASAP! (1) Solve the formula for the specified variable r = vx for r (the question is) v = ? a = 1/3f * p for f (the question is) f = ? (2) Solve the forulma for v S = D + vm

    asked by Sam
  42. chemistry

    The price of a ream of paper is $3.30. There are 500 sheets of paper in a ream. If a sheet of paper weighs 0.500 oz, what is the price of a kg of paper (in dollars, do not include units, round to two decimal places)? What is the cost of one sheet of paper

    asked by ashley
  43. Algebra

    Bayside Insurance offers two health plans. Under Plan A, Sam would have to pay the first $200 of his medical bills, plus 35% of the rest. Under Plan B, Sam would pay the first $230, but only 35% of the rest. For what amount of medical bills will Plan B

    asked by Norma
  44. math

    Hoshi walk 10 meters in 3 sec. a. what is her walking rate? b. at this rate how long does it take to walk 100 meters c. suppose she walks the same rate for 50 sec. how far does she walk d. wright an equation that represents the distance D that Hoshi walks

    asked by jason
  45. math

    tom was paid $4.50 per hour for painting a fence and $ 6.50 per hour for mowing grass. He worked 7 hours and earned $39.50. How many hours did it take him to paint the fence/

    asked by mi
  46. Chemistry

    I have a test tommorow and I forgot how to do this: Caculate mass of Cr in 548g of K2Cr2O7. I remember putting 548g K2Cr2O7 (1 mol K2Cr2O7/294.2 g K2Cr2O7) then from there I forgot. I got 96.85 g Cr but that does not seem right. Could someone please tell

    asked by Amy~
  47. AED 201

    Use a Microsoft® Excel or Word table function to propose and create a schedule of school-related tasks for a typical teaching day from the time you arrive at school until the time you leave school at the end of the day. Remember to take into account the

    asked by Jasmine
  48. English

    1. After school, I go to an academy and learn 5 subjects. On the midterm exam in the second semester, I can get a better grade. 2. I go back home as soon as I can, and I watch educational programs on EBS. I can study math and English effectivelt. 3. I like

    asked by rfvv
  49. geometry

    do u know of any object that has lines rays segments collinear points and coplanar points ?

    asked by tamika
  50. science

    because they help trap oxygen from the atmosphere in the water for animals to breathe, ______ are important to sea life.

    asked by pam
  51. Math

    |x-4/2|-1 > or equal to 7

    asked by Sammie
  52. history WWI

    Would it be right for Germany to sink ships without warning if they fired upon the submarines? I thought yes

    asked by Amy~
  53. 6th grade math

    You have 3 sandwich wraps. Show 3 different ways to cut the wraps to feed 9 people equally

    asked by cici
  54. Algebra

    Bayside Insurance offers two health plans. Under plan A, giselle would have to pay the first $190.00 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $250, but only 20% of the rest. For what amount of meidcal bills will

    asked by Norma
  55. History WWI

    Do you think that Germany wanting an end to British blockade so that Germany would keep the Sussex Pledge reasonable. I thought not

    asked by Amy~
  56. physics

    a man has only 4 simple pulleys to lift a heavy load of 6000N. in roder to lift the load easily, he combines the pulleys (3 moveable, 1 fixed). given that the frictional forces are 300N, what force must he apply in order to lift the load?

    asked by ashlee
  57. physics

    A viaduct is being re-levelled by using a jackscrew with a pitch of 5mm. The mass of the top slab of the viaduct is 20 tonnes (20000kg) and its length is 40m. The lever arm used to turn the jackscrew is 60 cm long. Calculate the effort force to be applied

    asked by jenny
  58. ETH/125

    Hello I am looking for some help with my Final for this class. Here is the assignment: Final Project: Race and Your Community Resource: Appendix A Due Date: Day 7 [Assignment] forum Prepare a 1,400- to 1,750-word autobiographical research paper that

    asked by Nikol
  59. french

    La Verite—Le Mensonge 1]c'est vrai -c'est juste -c'est exact\c'est faux dire la verite \mentir un mensonge un menteur 2] cacher la verite decouvrir la verite [une decouverte] reveler-faire une revelation deviner -une devinetteatruth lies

    asked by babs
  60. English Communcation !

    A synonym for preparedness is what?

    asked by Patty
  61. french

    Le souvenir -l'oubli 1] la memoire -un souvenir avoir une bonne \mauvaise memoire retenir une lecon apprendre\ savoir une lecon par coeur 2]se souvenir de quelquechose se rappeler quelque chose 3]oublier quelque chose de faire quelque chose un oubli etre

    asked by babs
  62. business information system

    ROI & NPV: wireless order-tracking system I need to identify the ROI and NPV of the wireless order-tracking system. Here is the information I have been given: - The acquisition cost is $35,000 paid at the time of installation. - It reduces the wait staff

    asked by Beatrice
  63. English

    1. I spend a lot of time looking for things. 2. I spend a lot of time in looking for things. 3. I spend a lot of time while/as I look for things. (Does #1 mean #2 or #3?)

    asked by rfvv
  64. algebra

    The mass of Neptune is about 1.03x10^23 metric tons. The mass of the sun is about 1.998x10^27 metris tons. About how many times the mass of Neptune is the mass of the sun? Round to the nearest thousandth, if needed use scientific notation. Use the

    asked by jackie
  65. Astronomy

    Imagine that the Earth's axis were tilted parallel to the ecliptic plan like that of the planet Uranus. Describe how the seasons would be different in this scenario than what we currently experience.

    asked by Dre
  66. HCA 220

    You are an allied health professional working with an endocrinologist. You have been working with the patient and need to update the doctor on the reason for the patient’s visit. Begin describing the patient’s concerns. Your classmates can continue

    asked by Anonymous
  67. 6th Grade Math

    How can you find an unknown factor in a multiplication problem? Is the answer: divide the two numbers that you have?

    asked by Val
  68. social studies

    Marks: 1 At a public meeting, community residents will be able to comment on a proposal for a new city park. The live broadcast of the meeting will likely be a credible source of information about the meeting attendees’ feelings about the proposed park

    asked by john
  69. Englsih

    1. In later paintings, he painted people doing everyday things. 2. In later paintings, he painted people who are doing everyday things. 3. In later paintings, he painted people who do everyday things. (#1 can be changed into #2 or #3. Am I right? Which one

    asked by rfvv
  70. Physics

    A crow flies in two successive displacements to a point that is 80 m to the west. Its first displacement is 80 m in a direction θ = 50° west of north. What is the magnitude of its second displacement? What is its direction as measured by the angle θ

    asked by Z32
  71. English

    1. I don't like this movie at all. 2. That makes two of us. 3. That makes three of us. 4. That makes four of us. (When can we use the expressions from $2 to $4? When another person agree to it, he can say #2? Right? When another person agree to it, too,

    asked by rfvv
  72. calc

    Verify each limit using the limit definition Lim(2x^2 + 4)=4 X-->0

    asked by don
  73. math

    chita is 3 3/4 years younger than pablo. if you multiply chita's age by 4, the answer is 43. how old is pablo?

    asked by mi
  74. accounting help please?!

    Nancy Sly wishes to sell her business and receives the following three offers:? 1. $568,000 cash immediately. 2. $200,000 cash now plus an annual installment of $60,000 at the end of each year for 10 years, a total of $800,000. 3. An offer to manage the

    asked by Jay
  75. Math

    When would you make a list to sove a problem?

    asked by Brad
  76. commas and apostrophes

    what can you do to minimize errors when using commas and apostrophes in your writing?

    asked by Anonymous
  77. Algebra 1

    if the border for the first bedroom costs $1.95 per foot,the second bedroom is $1.45 per foot, the third bedroom is $1.75 per foot, and the sales tax rate is 5.5%, what will the total cost be?

    asked by Alie
  78. SCIENCE

    There are mountains, ridges, valleys, and plains on the ocean floor. a) false b) true true

    asked by pam
  79. math

    If a vehicle gets 16 MPG and gas costs $2.70/gallon. How much would it cost to drive the vehicle 30 miles? Can someone help me find a formula to figure this out?

    asked by lisa
  80. bus law

    What is the chronological order of the major legislation that makes up the history of employment law in this country? For each law, state the social problem the law was designed to address, and discuss how employment law has affected the workplace in the

    asked by kash
  81. science

    Darwin, Australia has its coolest month in July, with an average temperature of 77'F. It has a dry season from May to October. The grassy areas nearby are home to cattle ranches. a) Tropical savanna b) Tropical rainforest c) Tropical monsoon d) Not

    asked by pam
  82. PYP 202

    Your instructor asks you to compare positive and negative reinforcement and explain your conclusions in class. What will you report?

    asked by Tom
  83. college

    Trains A and B are traveling in the same direction on perallel tracks. Train A is traveling at 100 miles per hour and train B is traveling at 120 miles per hour. Train A passes a station at 2:10 A.M. if train B passes the same station at 2:22 A.M, at what

    asked by Anonymous
  84. Math

    Find the x and y intercepts: 2x=3y+1

    asked by Zena
  85. algebra check!!

    1 to the 7 power= 1 (-4)to the third power = -4·-4·-4=-64 -4 to the third power =-4·4·4=-64 right or wrong?? :?

    asked by sahaka
  86. math

    Sorry i could not understand log. Could you explain it in simpler terms? I am in class 7. The question was if a sum of money doubles in 8 yrs, in how many years will it triple itself?Is the answer 16? If it is please tell me how to show the workings. I

    asked by Susan
  87. STATISTICS

    DEPENDENT MEANS OF EXPERIMENTAL GROUP OF 20, MEANS OF 38, STD 3, CONTROL GROUP OF 30, MEANS 35, STD 5- SIGNIFICANCE LEVEL OF .05 IN HYPOTHESIS TESTING FORMAT

    asked by GARY
  88. math

    Solve each equation. What am I doing wrong because the answer is suppose to be 11/2 and I don't get the answer. Here's what I'm doing... Problem: 2x+1/4-3x-4/5=1/2 I get: 10x+5-12x-16=10 Which gives me -2x=21 My answer is -21/2 the correct answer is

    asked by Ronnie
  89. Math

    Solve each equation. |4x-2|+1=3 4x-2+1=3 4x-1=3 I get 4x=4 where x=1 But the answer is suppose to be 0,1 Where do you get the 0 from?

    asked by Ronnie
  90. physics

    at on time, the velocity of a rifle bullet was measured using a ballistic pendulum made up of a wooden block suspended from a string. the block used here has a mass of 20kg. a 50g rifle bullet is fired into the block, penetrating it by 10cm and causing it

    asked by dave
  91. suffixes

    answer the question with a complete sentence that uses a word from the spelling list. add a sufix to the underline word to create the correct word. Does Herb resemble his brother? the word from the spelling list is "rehearsal"

    asked by ana
  92. science

    Which of the following groups of tissue types is found in blood vessels? A. Connective, muscle, and nervous tissues B. Muscle and nervous tissues C. Connective, epithelial, and nervous tissues D. Epithelial and muscle tissues I think it's C because I don't

    asked by Derek
  93. spelling

    give a sentence for word proficient

    asked by Anonymous
  94. french

    PORTRAITS Le Francais moyen Lui ;taille;1,72m,Poids;72kg. Elle;taille;1,60m,Poids;60kg. Leurs yeux ;noirs ou marron a 55% bleus ou gris a 45% Leurs cheveux ;plutot bruns [les blonds sont en diminution] Decrivez ces personnes Existe -t-il pour vous un type

    asked by babs
  95. math

    I need to do a quick check for my homework by tomorrow. Sally,Jennifer,Theresa & Gina competed in a 100-meter race. Sally's time for the race was 12.330 seconds. Gina's time 12.034 seconds. Theresa's time was 12.003 seconds. Gina's time was 12.031 seconds.

    asked by sherkyra
  96. physics

    I have 2 questions: Assuming that water has a density of exactly 1 g/cm3, find the mass of one cubic meter of water in kilograms. Suppose that it takes 10.0 h to drain a container of 5700m3 of water. What is the "mass flow rate," in kilograms per second,

    asked by Scott
  97. science

    Estimate the pH of water in equilibrium with CO2 with a concentration of .008867M. Use equilibrium concepts to estimate? Is Kc equilivate to the pH?

    asked by Eileen
  98. Physics

    Help! I've been trying to understand this question for quite some time now and every attempt i make at it i get the wrong answer. maybe i'm just pluging the numbers into the equations wrong, but i always get the wrong answers. if someone can just breakdown

    asked by George
  99. science/acceleration

    Due to a cart's sudden acceleration, a 200g wooden block remains on the front of the cart and does not slide or fall off. The mass of the cart is 10kg. The coefficient of static friction between the block and the front of the cart is 0.30. Calculate the

    asked by dave
  100. college

    what quantity x of a 65% acid solution must be mixed with a 20% solution to produce 300 mL of a 45% solution

    asked by Claire
  101. Algebra

    4x - 3/8 ¡Ü - 7 or 4x - 3/8 ¡Ý4 Can anyone show me how to work this problem I am lost it has to be done tonight

    asked by Norma
  102. English

    How many activities did you have on Monday? 1. I had three activities on Monday. 2. I did three activities on Monday. (Are both answers correct? ....Thank you for your help. With your help, I can solve a lot of problems.....Have a good time.)

    asked by rfvv
  103. URGENT - Vectors

    Two vectors, A and B, are added by means of vector addition to give a resultant vector R. The magnitudes of A and B are 9 m and 8 m, respectively, and they can have any orientation. What are the maximum and minimum possible values for the magnitude of R?

    asked by John
  104. math

    a) 6(2x-3)-5(3x-2) i have -3x-8 b) 8-2[3-5(3x-1)] not sure Thanks

    asked by marco
  105. science

    ________ causes deep currents. a) Heavy, salty water sinking in the ocean. b) evaporation of seawater by the sun's rays c) less salty water rising to replace heavy, salty water d)all of the above d

    asked by pam
  106. English

    1. Stay on Cherry Street. 2. Keep going on Cherry Street. 3. Follow Cherry Street. 4. Take Cherry street. (Are they all the same in meaning? Does #1 mean that a person should stop on the street or a person should drive his car on Cherry Street?)

    asked by rfvv
  107. Calculus III

    Use the cross product to find the area of the triangle with vertices: P=(1,1,5) Q=(3,4,3) R=(1,5,7)

    asked by Calvin
  108. Math

    y=-2x+5 solve for x

    asked by Alexia
  109. Calculus III

    Find an equation of the plane passing through the three points given. P=(5,1,1) Q=(1,1,2) R=(2,1,1)

    asked by Calvin
  110. statistics

    A population of N=8 scores has a mean of µ = 20. If one score is changed from X=14 to X=50, what will be the value for the new mean?

    asked by laur
  111. statistics

    A population of N=8 scores has a mean of µ = 20. If one score is changed from X=14 to X=50, what will be the value for the new mean?

    asked by laur
  112. English

    (How do you read '2015' in the following sentence?) I will go over to the Philippines in 2015.

    asked by rfvv
  113. english

    Help me draft a one page memo to be sent to your Team and boss addressing the need for using appropriate tone, content, and awareness of audience in writing an inter office e-mail.

    asked by kathi
  114. college physics

    A 3.00 kg ball is thrown vertically into the air with an initial velocity of 15.0 m/s. The maximum height of the ball is

    asked by Anonymous
  115. science

    How many cars are there in a long freight train if it take the entire train 2 minutes to pass a station as it travels at 40 miles/hour? Each car is 50 feet long

    asked by paulie
  116. Calculus

    Use the cross product to find the area of the triangle with vertices: P=(1,1,5) Q=(3,4,3) R=(1,5,7)

    asked by Calvin
  117. Math

    A painter can paint a racquetball court in 8 hours. His assistant needs an additional 2 hours to paint the same court working by himself. How long will it take both of them working together to paint the court.

    asked by Luanne
  118. Science

    In any good experimen, the scientist needs to the hypothesis

    asked by Demy
  119. math

    if a sum of money doubles in 8 yrs, in how many years will it triple itself?Is the answer 16? If it is please tell me how to show the workings. I understood the concept but cannot express it.This is a simple interest sum.

    asked by Susan
  120. Chemistry

    1. Engineers design air bags that deploy almost instantly upon impact. To do this, an air bag must provide a large amount of gas in a very short time. Many manufacturers use sodium azide, NaN3, to produce the gas in such a manner 2NaN3(s)  2Na(s) +

    asked by Noelle
  121. organism physiology paper

    explain how an organism has evolved physiologically to become suited to its environments. give examples.

    asked by enrique raigosa
  122. science

    To stop an elevator in free fall, brakes are installed between the walls of the elevator car and the walls of the shaft in which the car moves. In addition, springs with compression coils are installed on the floor, at the bottom of the shaft, in order to

    asked by christine
  123. french

    Vocabulaire 1]Donnez le contraire des phrases suivantes Il dit la verite.--La population a augmente.--Elle a critique le film .---Je me souviens de cette histoire. ---Cette region est restee la meme. 2]Completez ces phrases Dans le desert du Sahel, l'eau

    asked by babs
  124. anatomy

    a 36 year of woman has a disease that affects the levels of acetychlorine in her synapses and neuromuscular junctions. what is a potential consequence of this disease A. deterioration of the sodium potassium pump b. abnormal conduction of signals of

    asked by mary
  125. algebra homework

    2sqrt x+1-1=6-x I really need some help because I am so lost,so can someone please help me?

    asked by jessica
  126. science

    A viaduct is being re-levelled by using a jackscrew with a pitch of 5mm. The mass of the top slab of the viaduct is 20 tonnes (20000kg) and its length is 40m. The lever arm used to turn the jackscrew is 60 cm long. Calculate the effort force to be applied

    asked by christine
  127. social studies

    what is a legand

    asked by emily
  128. french

    Caracteriser les actions les adverbes a] elle travaille bien ,mal , vite. b] adverbes formes avec l' adjectif 1] adjectif au feminin +ment; correcte -correctement-joyeux-joyeusement 2]adjectif en i,ai, e, u, au masculin+ment; joli- joliment-gai -gaiment

    asked by babs
  129. geometry

    i need example of isometric drawing

    asked by cristian
  130. 3rd grade

    i was given a spelling words. than it say 'put the spelling words in a collage' what that mean pls help

    asked by natalie
  131. science

    Is a wart an example of a papule or a nodule?

    asked by Derek
  132. Physics

    A particle's initial velocity is −24.0 m/s. Its final velocity, 3.10 seconds later, is −14.0 m/s. What was its average acceleration?

    asked by Nadia
  133. algebra

    The number N, in millions, of hearing impaired people of age x can be approximated by N=0.00006x^2 - o1x + 1.1.Approximate to the nearest million the number of hearing impaired people of age 45 and 70.

    asked by jackie
  134. Math

    Which sequence do I use to get the answer to this problem? Arithmetic or geometric? The answer is $36,000 but I do not no how to write it out or which one to use, Can someone please help me? Thank you. A person deposited $500 in a savings account that pays

    asked by Fh
  135. algebra

    The polynormial 0.041h-0.018a-2.69 can be used to estimate the lung capacity in liters of a female with height h, in cetimeters, and age a, in years. Find the lung capacity of a 40-year old woman who is 190 centimeters tall. Round to the nearest hunderd.

    asked by jackie
  136. 7th grade

    What is the least common multiple of 35, 70, 140

    asked by Alex
  137. math

    USE THE NUMBERS 3, 5, 6, 2, 54, AND 5 IN THAT ORDER TO WRITE AN EXPRESSION THAT HAS A VALUE OF 100

    asked by nini
  138. Biology

    how many e. coli could you line up, end to end, in one mm, assuming the E. Coli is 2 micrometers long?

    asked by Michael
  139. SCI/275

    Hello, I would like for someone to read my Final for my class SCI/275. The assignment is: Final Project: Mitigation Strategies and Solutions (Due Sunday in the Assignment Section of eEcampus) • Resource: Appendix A • Use the topic you chose as an

    asked by Cindy
  140. Abnormal Child Psychology

    Phone surveys suggest that about____ of 10-to 16 - years- olds experience physical and/ or sexual abuse. A. one-tenth B. one- fourth C. one third D. one-half

    asked by Anonymous
  141. spanish

    Identifica las contribuciones politicas de los Mexicoamericanos en los Estados Unidos. (2 ejemplos)

    asked by Angela
  142. accounting help please?!

    Nancy Sly wishes to sell her business and receives the following three offers:? 1. $568,000 cash immediately. 2. $200,000 cash now plus an annual installment of $60,000 at the end of each year for 10 years, a total of $800,000. 3. An offer to manage the

    asked by Jay
  143. microbiology

    penicillin was called a" mircle drug" because it doesnt harm cell. why doesnt it?

    asked by marie
  144. 5th grade

    What are compatible numbers?

    asked by Anonymous
  145. math

    What is clustering?

    asked by Anonymous
  146. math

    how many seven-digit numbers less than 1,048,000 can be made by using the digits 0,1,4,6,7,8,and 9?

    asked by sammyris
  147. geometry

    Make a conjecture about the next item in the sequence:2-6,18,-54

    asked by bob
  148. physics

    How many molecules are in one liter (1000cm^3) of water

    asked by Sarah
  149. algebra

    solve for r a+ar=b+r Help! Thank you.

    asked by Alex
  150. English

    1. Look, there is a person coming. 2. Look, there is a person who is coming. 3. Look, there is a coming person. (Does #1 mean #2 or #3? Is #2 and #3 grammatical?) 4. Look, here is a person coming. (What is the difference between #1 and #4?)

    asked by rfvv
  151. algebra

    how do you graph the function... f(x)=2^x over the interval -2 is less than or equal to x is less than or equal to 3. Help please! THANKS!

    asked by Alex
  152. Health

    Create a PowerPoint® presentation of at least 9 slides outlining the major functions that distinguish the following U.S. health care settings, with an appropriate introduction and conclusion. My question is about this assignment, Does outlining the major

    asked by Cassie
  153. 9th grade global history

    In the book 1001 Arabian Nights what chapters deal with Humor through trickery of the innocent and Distrust of foreigners

    asked by Alexa
  154. math

    Choose the one alternative that best completes the statement or answers the question. Find the probability. The table describes the smoking habits of a group of asthma sufferers. |Non|Light|Heavy|Total Men| 311| 82 | 74 |467 Women| 329| 68 | 60 |457 Total|

    asked by Sarah
  155. math

    name each number in 2 different ways 67,000

    asked by alexis
  156. Calculus III

    P=(2,1,0) Q=(1,5,2) R=(-1,13,6) Are P, Q, and R collinear? If not, find a vector normal to the plane containing them.

    asked by Calvin
  157. social studies

    Name two states that extend futher south than louisiana

    asked by Alex
  158. Math

    I need some help with this question. (5/x-2) = (6/x+6) + {29/(x-2)(x+6)} I don't know how to solve this. Can someone help me figure this out? Thanks.

    asked by W
  159. history

    What does disable mean?

    asked by Mandy
  160. English

    1. Here is a checklist and some tips. 2. Here are a checklist and some tips. (I think #2 is right? Don't you think so? However, I could see #1 in a textbook. Is it right?)

    asked by rfvv
  161. Math

    How woud you factor the trinomial x(to the second power)-9x+20

    asked by Nichole
  162. tsu

    Determine the value of a $500 Canadian Pacific Limited perpetual 8 percent debenture if the required rate of return is 14%: (8)

    asked by chris
  163. science

    circulation of ocean waters is called a) H.M.S.CHALLENGER b) current c)winds d) turbulence e) Eckman Spiral Just need to know if my answer is right or wrong. Thanks!!!!!!!!! :) B

    asked by pam
  164. Hawaiian Farming

    What is the percentage of land used by farmers compared to farming land avalible in Hawaii? Thanks!

    asked by Riley
  165. math

    3x9=27 3 is called a ____factor_____ 9 is called a ____factor____ 3 and 9 are called_______ ________ PLZ help thank you for your help

    asked by ST
  166. physics

    if each parallel conducting plates have area 1, then another area 2 is added to each plates, if i look at this formula Q=CV=epsilon(A1+A2)V/d, then shouldnt charge increases then charge density also increases

    asked by blasting
  167. PreCalc

    In sixteen states and the District of Columbia, the legal blood-alcohol level is 0.08. Use the formula A(x) = -0.0082x2 + 0.06x to compute blood-alcohol levels as a function of x (the time in hours). When is the first time that a person can be arrested for

    asked by Anonymous
  168. English

    1. Let's not rush it. 2. Let's not rush it too much. (What is the meaning of these sentences? What does "it" refer to here?)

    asked by rfvv
  169. Buisness - Finance

    Determine the value of a $500 Canadian Pacific Limited perpetual 8 percent debenture if the required rate of return is 14%:

    asked by Joe
  170. English

    1. Don't give up your dreams. 2. Don't give up on your dreams. (Which one is correct? Are both OK? Then what is the difference between them?)

    asked by rfvv
  171. English

    1. I always worry the night before a big test. 2. I always worry at the night before a big test. (# 1 is right, right? What about #2? Can we add 'at' before the night?)

    asked by rfvv
  172. English

    I always worry the night before a big test. Then I can't sleep well. (Wha is the meaning of 'then' here? Is 'then' 'at that time, or 'after that'?)

    asked by rfvv
  173. life science

    what are the characteristics that define living things

    asked by whittney
  174. Algebra 2

    Factor completely: (0.36y^2-0.0001)

    asked by Ashly
  175. science

    a current is the movement of water in the sea. a) false b)true true

    asked by pam
  176. science

    I NEED HELP ON MY CROSS WORD PUZZLE FAST CUZ IT IS DUE TOMARROW PLZ HLP

    asked by silly
  177. math

    what are some factors of 36

    asked by jennifer
  178. matematicas

    hola, olvide mi libro matematicas sep y tengo tarea de la pag. 16. me podrias ayudar ¿

    asked by jesus
  179. Plz check ......

    It is able to be appreciating that how Pseudolus complete all the tasks by his intelligence. I think being a slave, no one can dare to compete other powerful and wealthy authorities. But he does .He wins the bet with Simo and he also gets the girl .As well

    asked by Sham
  180. pre-cal

    Find the area of a square whose side length is 1/4 the value of its area

    asked by Anonymous
  181. math

    How many Seven-Digit numbers less than 1,048,000 can be using the digits 0,1,4,6,7,8 and 9 ? Think: Make A List Of Possible Ways to Represent Your Seven-Digit Numbers.

    asked by Tenecia
  182. physics

    A 3.00 kg ball is thrown vertically into the air with an initial velocity of 15.0 m/s. The maximum height of the ball is

    asked by Anonymous
  183. science

    The diameter of a neutral helium atom is about 128 pm. Suppose we could lin up helium atoms side by side in contact with one anohter. Approximately how many atoms would it take to make the distance 1 cm from end to end.

    asked by paulie
  184. Finance

    Saturated Meat Corporation preferred stock is currently selling for $22 per share. The preferred dividend is $2.50 per share. If Jennifer requires a return of 10% on the preferred stock, should she invest in this stock?

    asked by Joe
  185. science

    Cagliari, on the island of Sardinia, receives almost no summer rain Its average summer temperature is 76'? and average winter temperature is 50'F What climate is it? a) humid subtropical b) not temperate c) Mediterranean d) Marine west coast c

    asked by pam
  186. math

    (3+4)^2= A-13 B-14 C-19 D-25 E-49 3+4=7 7X7=49 E-49

    asked by AnOnYmOuS1
  187. MATH

    The exact value of 49-24 is between 2 and 5

    asked by AnOnYmOuS1
  188. math

    200% of 7 is 1,400

    asked by AnOnYmOuS1
  189. Quadratic Equations

    If I were looking at a graph of a quadratic equation, how do I determine where the solutions are?

    asked by Lynn
  190. science

    During a competition, a 60kg cyclist rides along a horizontal road on a bike with a mass of 5kg. During her ride, she changes gears and uses the chain wheel with a radius of 7.5cm and 36 teeth, and the rear sprocket with 18 teeth. The pedal handle is 20 cm

    asked by samantha
  191. Finance

    Determine the value of a $500 Canadian Pacific Limited perpetual 8 percent debenture if the required rate of return is 14%

    asked by mark
  192. 2nd grade

    it says i must skip count by 10 for 1-100. then skip count by 3 for 1-100. then it says what do i see when i skip count by 10 and 3 for 1-100... i have no idea what they are talking about. plz help

    asked by unknown
  193. math

    what is 2 times 100000000000000000000000000000000000000000000000000000000000000

    asked by ===
  194. math

    prime fact 4 2500

    asked by oc
  195. Creating floor plans

    Does anyone know any good sites or software I can use to create a floor plan of a business?

    asked by Lynn
  196. math

    What is another way to compute the answer to 20x2=500

    asked by Anonymous
  197. geometry

    Why the angles 86,35,39 are not acute?

    asked by Frankie
  198. math

    What is another way to compute 20x25=500

    asked by Anonymous
  199. Quantitative reasoning

    if 5*5=4 3*4=5 6*1=6 what is 1. 5*2

    asked by Ogoo
  200. math

    a 9 percent salt water solution is mixed with 4 oz. of an 18 percent salt water solution in order to obtain a 15 percent salt water solution. how much of the first should be used?

    asked by Bob
  201. chemistry

    What is the pH of a solution that is .200M in acid and .500 m in the corresponding salt if the weak acid ka= 5.0x10^-7

    asked by Rae
  202. writing

    Flexibility is a key component in adapting to each new challenge: most students can do this by the end of week one. Is this sentence right? Should the colon actually be a semicolon?

    asked by Chris
  203. french

    2Expression du futur Mettrez les verbes entre parentheses au temps qui convient Demain je [ revoir]Mireille.Elle m'[attendre]a 9 heures au Cafe des Arts. Nous [aller] dans maison de campagne des Dubos. Ils nous [emmener] visiter la region. Nous [passer]

    asked by babs
  204. french

    Remplacez les mots soulignes par un adverbe en ' ment' Example ;Il marche dans la rue se depecher. Il marche lentement1] Il a critique le film avec ironie. 2]Nous avons fete la nouvelle annee dans la joie. 3]Il a explique la situation sans s'enerver.

    asked by babs
  205. french

    Comparaison et caracterisation comparez la consommation de poisson et de lait dans les differents pays. Consommation annuelle par pays Poisson [en kg par habitant] Grande Bretagne:127 Norvege : 50 Japon: 36 France: 9 Lait [en litre par habitant] Islande:

    asked by babs
  206. spelling

    give a sentence for word proficint

    asked by Anonymous
  207. science

    Need to use hypothesis in a sentence and draw a picture relating to it. Was Ben Franklins flying a kite a hypothesis or a theory?

    asked by sophia