Questions Asked on
February 24, 2010

  1. chemistry

    The following errors occurred when the above experiment was carried out. How would each affect the calculated molecular mass of the solute (too high,too low, no effect)? Explain your answer. (a) The thermometer uses actually read 1.4C too high.

    asked by chuchuchulu
  2. biology

    for the hardy-weinberg equation, is p always for the dominant allele and q recessive? is the value of p always greater than q?

    asked by barb
  3. Advanced Chemistry

    What is the (name of the) molecular structure of AlCl3NH3 ?

    asked by Inga
  4. Accounting

    Given the data, would you have invested in Quality Department Store in 2006? Explain why or why not. Summarize your analysis of the financial data to support your reasoning. What recommendations would you make to improve the financial health of this

    asked by Joe
  5. chemistry

    Molecular Mass by Freezing point Depression (Preliminary Lab) The following errors occurred when the above experiment was carried out. How would each affect the calculated molecular mass of the solute (too high,too low, no effect)? Explain your answer. (a)

    asked by chuchuchulu
  6. biology

    why aren’t there vaccines for every disease?

    asked by Leah
  7. biology

    Will O2 passively diffuse and bind with hemoglobin that is less than 1mm from the surface of a blood sample? The percent of hemoglobin bound with O2 is different at high (10% CO2) and low (5% CO2) CO2 concentrations when the Po2 equals 0mmHg. Is that true?

    asked by Alex
  8. math

    Bill, Ernie, Oscar, Sammy and Tony are the five basketball players on the starting team of the varsity squad. Each one is known by a different one of these five nicknames: Slats, Stretch, Tiny, Tower, and Tree. From the information given, determine the

    asked by jacob
  9. math

    find the derivate of the function Y=(2x+3)^4(3x+1)^-2?

    asked by vic
  10. hum 205

    You are in charge of marketing and advertisement at your local art museum. Next month, the museum will be hosting an exhibition on the social role of the arts in early Chinese and Japanese civilizations. · Create a 2-page, informative newspaper

    asked by chelle
  11. math

    Bill, Ernie, Oscar, Sammy and Tony are the five basketball players on the starting team of the varsity squad. Each one is known by a different one of these five nicknames: Slats, Stretch, Tiny, Tower, and Tree. From the information given, determine the

    asked by jacob
  12. college

    One mole of oxygen gas is at a pressure of 5.10 atm and a temperature of 32.0°C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature?

    asked by Anonymous
  13. algebra

    3x5-14/(-1)

    asked by rahab
  14. Algebra

    2(x+5)/(x+5)(x-2) = 3(x-2)/(x-2)(x+5) + 10/(x+5)(x-2) I know I have to get 2(x+5) = 3(x-2) but I don't know the intermediate steps. I tried canceling out to get 2/(x-2) = 3 + 10 / (x+5) and gross multiplying but that wouldn't make sense.

    asked by Zoe
  15. calculus II

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

    asked by Paul
  16. chemistry

    How many grams of steam at 100 Celsius would be required to raise the temp. of 35.8 g solid benzene, from 5.5 Celsius to 45.0 Celsius???

    asked by pgarcia
  17. Chemistry

    How do I know which of these .1M solutions will have a pH less than 7? KF, NH4I, NaH2PO4, Fe(NO3)3 I am guessing all but KF is acidic...but if someone could confirm this and explain why that would be helpful

    asked by Mark
  18. Chemistry

    What is the solubility of calcium iodide (in g per 100 cc of cold water)?

    asked by Jeanna
  19. chemistry

    In the reaction A to products, A is found to be 0.489 M at t=72.0 s and 0.468 M at t=82.2 s What is the average rate of the reaction during this time interval? Do I take the Ln (0.468/0.489) = -0.04395 / 10.2 = 4.3 * 10^3. yet the comp says its wrong. i

    asked by david
  20. chemistry

    When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solution level rises. Based on this information, what can be said about these two solutions? a.) The unknown solution had the lower

    asked by david
  21. Math

    Factor any difference of two squares, or state that the polynomial is prime. Assume any variable exponents represent whole numbers. x2 - 100

    asked by ReRe
  22. Math

    Multiply using the rule for the product of the sum and difference of two terms. Assume any variable exponents represent whole numbers. (x - y + 11)(x - y - 11)

    asked by ReRe
  23. Math

    Multiply the monomial and the polynomial. Assume any variable exponents represent whole numbers. -5x2y(-11x2y4 - 12xy3 - 4)

    asked by ReRe
  24. math

    A rectangular park measuring 35 yards by 24 yards is surrounded by a trail of uniform width. If the area of the park and the trail combined is 2420 square yards, what is the width of the path?

    asked by ReRe
  25. nutrition

    What are some current nutritional issues, such as obesity or malnutrition, that can affect school student?

    asked by flowerpower
  26. Math

    Given the polynomial functions, find the product function and the specified value. Let f(x) = x + 2 and g(x) = x - 10. Find (fg)(x) and (fg)(-5).

    asked by Rema
  27. Math

    Multiply using one of the rules for the square of a binomial. Assume any variable exponents represent whole numbers. (11x - y)2

    asked by Rema
  28. Math

    Factor the greatest common factor from the polynomial. Assume any variable exponents represent whole numbers. 12xy + 20xz - 8xw

    asked by Rema
  29. Math

    Factor the greatest common factor from the polynomial. Assume any variable exponents represent whole numbers. 20x9 - 20x7 - 16x2

    asked by Rema
  30. chemistry

    When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solution level rises. Based on this information, what can be said about these two solutions? a.) The unknown solution had the lower

    asked by david
  31. math

    how many months in 7 & 1/2 years?

    asked by Nik
  32. Finance - market varience

    Find how many times the market variance is of the SD of a portfolio half in the riskfree security and half in the market. The market variance is .25 times (.5 x .5 = .25). Is my answer correct?

    asked by Anonymous
  33. biology

    Why might it be worse to get an infection from someone in the hospital than from someone on a bus? is it because how bad the infection is, usually people that are in the hospital are in bad condition

    asked by Erik
  34. BIOLOGY

    The 1918 Influenza Epidemic was the worse one on record. People infected early in the epidemic had a mild flu, while those later infected had a much more severe form of the disease. What is the explanation for this observation and what laboratory studies

    asked by RITA
  35. BIOLOGY-DNA FINGERPRINTING

    Okay soo i'm confused on DNA fingerprinting, i know what it is and everything but why do they call it DNA fingerprinting when a fingerprint is only a mark left by the person?

    asked by SAMMEHH
  36. English

    Is there a difference between an ELL learner and a struggling reader? I say that to a certain degee there is a difference because an ELL students and a struggling reader. In a sense they both must understand the concept of another language. What is your

    asked by B.B.
  37. english

    I need help with my annotated bibliography thesis for Maya Angelou!!!!!!!? It is for a research paper. I has to include a bibliography of Maya Angelou and 3 of her works. I just need help with the thesis for the annotated bibliography.

    asked by Heidi
  38. marketing

    identify three problems that a marketing communicator must solve when creating an advertisement.

    asked by denise
  39. Physics

    A rectangle with sides (a=1m) and (b=2m) has a set of discrete charges at the following locations: upper left: q =1nC lower left: q = 1nC lower right: -2q = -2nC Find the Coulomb force on a charge of q =1nC at the upper right hand side of the rectangle.

    asked by Jake
  40. physics

    How do i determine the volume displaced when given mass and volume of an object.

    asked by Cory
  41. writing

    Hello. I could really use some help with my ESSAY. If anyone could tell me what they think of it and if anything needs corrected. Thanks Jess Well I guess the best place to start is the beginning. I was born in Kentucky, but only lived there for five

    asked by Jess
  42. Improving Your Writing

    Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides secretarial

    asked by SASSY
  43. calculus

    Posted by Paul on Friday, February 19, 2010 at 3:57am. I have the function f(x)=e^x*sinNx on the interval [0,1] where N is a positive integer. What does it mean describe the graph of the function when N={whatever integer}? And what happens to the graph and

    asked by Paul
  44. english

    They plan/planned to leave for the woods at 2 o clock in the afternoon. which one is correct?

    asked by Susan
  45. Speech

    Does the sentence "Standing on a chair, I was just able to reach the high window." demonstrate correct use of modifiers?

    asked by Sara
  46. speech

    Is the phrase Don't forget marketing plan in parallel form?

    asked by Sara
  47. Managerial Accounting

    Instead of sales of 10,000 pair of skis, revised estimates show sales volume at 12,500 pair. At this new volume, additional equipment, at an annual rental of $10,000 must be acquired to manufacture the bindings. This incremental cost would be the only

    asked by Anonymous
  48. english

    Many people doesn't /didn't /don't like him. Which ones are correct?

    asked by Susan
  49. 2nd grade

    in what from is iron usually found under the ground .. please help me

    asked by help !!!
  50. Global History

    How was the West impacted by imperialism?

    asked by Brenda
  51. english

    CAN SOMEBODY PLEASE HELP ME WRITE THE REST OF THIS ESSAY. I DON'T KNOW WHAT ELSE TO WRITE AND MY ESSAY IS DUE TOMMOROW. BY THE WAY THIS ESSAY IS NOT ABOUT ME ITS ABOUT SOMEBODY I KNOW. IM JUST TELLING IT IN FIRST PERSON. Ive made a fair deal of bad

    asked by Anonymous
  52. Geometry

    I would greatly appreciate any help I can get with this problem. I need to find the volume of a right triangular prism. The sides of the triangles measure 2cm and the length of the prism is 10cm. I found the surface area to be 64sq cm...is this correct?

    asked by Nicole
  53. english

    what is the adjective in the sentence She brought an apple for snack

    asked by april
  54. algebra

    your high school golf team shot rounds of 68, 70, 72, 78, and 84. if par for the course was 71, how many shots was the team over par?

    asked by brina
  55. cenntennial middle

    what would have caused the us navy to develop the invisible ink describe in the last paragrah?

    asked by brandell
  56. literature

    In the Odyssey, Part 2, what danger do Scylla and Charydbis pose to Odysseus and his crew?

    asked by salem
  57. algebra

    solve for y: 1. 3x+2xy=10 2. 1/3x-3/4y=6

    asked by brina
  58. english

    Winds stampeding the feilds under the window . Floundering back astride and blinding wet. Till day rose; then under an orange sky. ~ comment on the poets use of sentance structure i have no idea how to answer this could you please help me ?

    asked by Kerryann
  59. physics

    A 6.0-kg box is raised a distance of 3.0m from rest by a vertical applied force of 80 N. Find (a) the work done on the box by the applied force, (b) the work done on the box by gravity, and (c) the final kinetic energy of the box.

    asked by carrie
  60. physics 2

    how much excess charge must be placed in a copper sphere so that its electric potential relative to infinity is 150kv radius 0.125 m b)what is the potential of the surface relative to infinity

    asked by Anonymous
  61. Math

    A coin bank contains only nickels,dimes, and quarters. the value of the 19 coins in the bank is $2.00. There are twice as many nickels as dimes. Find the number of each type of coin in the bank. How do you solve this?

    asked by Jason
  62. Mathematics

    A solution is mixed with a 12% acid solution to form a 16% acid solution. How many liters of the 20% acid solution are used to make 10 liters of the 16% acid solution?

    asked by Matthew
  63. math

    how do you solve factoring the binomial by grouping (x +3)y = (x+3)6=

    asked by namisha
  64. Molecular biology

    What is the importance of the tertiary structure of a tRNA? I know the structure, but I'm not sure what is the importance of it. Is it stabilization?

    asked by Zoe
  65. Math

    how do you solve: 2A^2-7a-15

    asked by Ben
  66. Physics

    If a proton is released from rest in a uniform electric field does electric potential at its position increase, stay the same, or decrese?

    asked by Sara
  67. PHYSICS

    A mobile postive point charge is located between two parallel charged plates of charge densitys +o (top plate) and -o (bottom plate) at a distance d from the negative plate.the distance doubles (becomes 2d)between the negative (bottom) plate and the mobile

    asked by Michael
  68. algebra

    I have been trying to solve this question, and I am not getting the right answer. I need to do Grouping 5x^3+5x^2-x+1

    asked by Anonymous
  69. algebra 2

    solve the equation: 1. 1/2a+2/3=(-1/3)a-3/4

    asked by selin
  70. Physics

    A car travels at an average speed of 83.2 km/h for 1.00 h and then at an average speed of 42.4 km/h during a second hour. What is the car's average speed during the 2.00 h interval? A car travels 0.98 km at an average speed of 83.2 km/h and then 0.99 km at

    asked by Delilah
  71. Physics

    A baseball player hits a line drive. Just before the ball is struck, it is moving east at a speed of 43.2 m/s (97 mi/h). Just after contact with the bat, 9.30 10-4 s later, the ball is moving west at a speed of 52 m/s (116 mi/h). Find the ball's average

    asked by Delilah
  72. Physics

    An elevator is initially moving upward at a speed of 11.04 m/s. The elevator experiences a constant downward acceleration of magnitude 3.84 m/s2 for 3.06 s. (a) Find the magnitude and direction of the elevator's final velocity. (b)How far did it move

    asked by Delilah
  73. physics

    how to calcula distance of a object in free fall if only the time it reaches the ground is given

    asked by kgomo kgothatso
  74. Physics

    The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 5.35 m/s2. If the car's initial speed is 29.1 m/s, how long does it take to stop and how far does it travel, starting from the

    asked by Delilah
  75. Physics

    You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 4.50 m/s, directed downward, and it hits the ground 2.04 s after it is released. Find the height of the balcony.

    asked by Delilah
  76. algebra

    Melanie’s house is worth $125,000, but she still owes $78,422 on her mortgage. She has $21,236 in a savings account, and $9,477 in credit card debt. She owes $6,131 to the credit union, and figures that her cars and other household items are worth a

    asked by axia
  77. Geometry

    If the edge of a cube is doubled, the volume is?... a. half as much, b. doubled, c. quadrupled, d. none of these

    asked by Nicole
  78. PHYSICS

    Humid air breaks down electrically when its molecules become ionized. this happend in an electric field |E|=3*10^6 N/C. In that field, calculate the magnitude of the electric force on an ion with a single positive charge. ..when they say a single positive

    asked by Lauren
  79. geography

    I need to find a major industry in the north italian plain. I have typed it in a few search engines but I have yet to find an answer. Please help.

    asked by Janey
  80. Biology

    39. Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to

    asked by mysterychicken
  81. Social Studies

    "Spreading light...without taking part in the affairs of the world...seeing as a trap...all expantion into Africa or the Orient-for a great nation to live this way, believe me, is...in less time than you may think, to sink from the first rank to the third

    asked by Jenn
  82. Geography

    Please can you tell me whether the north italian plain or the south of italy would have a) hydro-electric power available b) few natural resources. I cannot find the answers to them. One answer goes on north and one on south. Please help.

    asked by Janey
  83. Math

    A coin bank contains only nickels,dimes, and quarters. the value of the 19 coins in the bank is $2.00. There are twice as many nickels as dimes. Find the number of each type of coin in the bank. How do I solve this?

    asked by Jason
  84. us history

    Although Susan B. Anthony's actions were directly related to women's voting rights, how does her call for action later apply to other groups?

    asked by Christopher
  85. Calculus

    I saw this question asked, but I didn't understand the answer format. My prof doesn't use dx and dy after he has differentated the problem. He just uses (for example) 8x+2+y+xy(prime) The question is this: 4x^2+2x+xy=12 and y(2)=-4 find y(prime)(2) by

    asked by Elisabeth
  86. 12th grade

    a tortoise and a hare are running in a race you are asked to prepare graps similar to those in your reading material to graph the progress of each animal during the race. as in the text, distance is the vertical scale of your graph and time is the

    asked by pam turner
  87. 6th grade math

    can a rectangle with sides 2 and 4 be similer to a triangle with sides 2 and 3? can you please explain this?

    asked by Lisa
  88. Business

    What is the most popular ERP (Enterprise Resource Planning) and CRM (Customer Relationship Management) packages on the market today?

    asked by unsure
  89. Environmental Science

    Describe the major problems in today's large cities and the cause of these problems?

    asked by lisa
  90. Algebra

    Flying with the wind, a small plane flew 360 miles in 2hours. Against the wind, the plane could fly only 300 miles in the same amount of time. Find the rate of the plane in calm air and the rate of the wind. I cant figure out how to solve this. Please help

    asked by Meghan
  91. 4th grade

    Use geometric terms to describe how a rectangular prism and a cube are different.

    asked by Ayla
  92. biology

    15. Imagine you have a sibling that needs a kidney transplant. You offer to give your kidney. What reaction against the red blood cells in the donor kidney would occur if you had different blood groups? Even if you had the same blood groups why might you

    asked by sadaf
  93. 6th grade math

    can a rectangle with sides 2 and 4 be similer to a triangle with sides 2 and 3? can you please explain this?

    asked by Lisa
  94. college

    if an object sinks in a particular fluid,the weight density (weight/volume) of the object will less than, equal to, or greater than, the weight density of the fluid

    asked by tammy
  95. geometry

    EF is a median of trapezoid ABCD. If the length of EF is 14x, and the length of CD is 20x, what is the length of AB in terms of x?

    asked by Anonymous
  96. MATH - 4th Grade

    Can you help me with this... Use geometric terms to describe how a rectangular prism and a cube are different.

    asked by Ayla
  97. physics

    imagine that you are a fish underwater. when you look up to the surface of the water you can see the sky and also the bottom of the pool. Try to explain this unsual view. A ray diagram might help

    asked by Anonymous
  98. western history

    Identify, by number, the medieval individuals who were known by the following names: 1. Unraed. 2. Forkbeard. 3. Bloodaxe. 4. the Boneless. 5. Ironside.

    asked by jerson
  99. Physics

    Orin and Anita rush a 60kg man from the scene of an accidnet, carrying him on a uniform 3kg stretcher held by the ends. The stretcher is 2.6m long and the man's center of balance is 1m from Anita. How much force must they both exert to keep him horizontal?

    asked by Tiffany
  100. Physics

    Orin and Anita rush a 60kg man from the scene of an accidnet, carrying him on a uniform 3kg stretcher held by the ends. The stretcher is 2.6m long and the man's center of balance is 1m from Anita. How much force must they both exert to keep him horizontal?

    asked by Tiffany
  101. Physics

    A 1.0 × 10−6 C test charge is 40.0cm from a 3.2 × 10−3 C charged sphere. How much work was required to move it there from a point 1.0 × 102 cm away from the sphere? what formula(s) should be used to calculate work...?

    asked by Lauren
  102. Chemistry

    An aqueous solution contains two solutes, A and B. A is soluble in hexane, B is not. Hexane is liquid at room temperature and does not mix with water. The density of hexane at room temperature is 0.7 gdm-3. Describe, giving full practical details, how you

    asked by Jose-Ann
  103. english

    What are the philosophical positions evident in Oedipus Rex?

    asked by kayla
  104. physics

    How much kinetic energy is gained by an electron that is allowed to move freely through a potential difference of 2.5 × 104 V?

    asked by Lauren
  105. Algebra

    Flying with the wind, a small plane flew 360 miles in 2hours. Against the wind, the plane could fly only 300 miles in the same amount of time. Find the rate of the plane in calm air and the rate of the wind. I cant figure out how to solve this. Please help

    asked by Meghan
  106. grade 12 chem

    hi, does anyone know any good websites on practicing reactions of hydrocarbons?

    asked by tim
  107. Physics

    An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 1.00 × 104 V. (a) Find the final velocity after the original acceleration period. (b) It then passes between two horizontal plates 6.0 cm long and

    asked by Dave
  108. Environmental Science

    #52. In two or three well-developed paragraphs, list and describe the importance of the four steps in a simple environmental decision-making model. my answer: A decision-making model is a conceptual model that provides a systematic process for making

    asked by y912f
  109. math

    different ways to come up with 100 - 25 x 4, 10 x 10, etc.

    asked by Joan
  110. environmental science

    1. How has the size and location of big cities changes since the year 1900?

    asked by amanda
  111. Environmental Science

    1. How has the size and location of big cities changes since the year 1900? 2. Describe the major problems in today's large cities and the cause of these problems. 3. What can be done to help solve these problems? 4. You may never live in a big city, but

    asked by lisa
  112. goemetry

    can the following formula to find the sum of the interior angles of a polygon be used on a concave polygon? 180(n-2) where n= the number of sides

    asked by mike
  113. grade 12 chem

    hi, does anyone know any good websites on practicing reactions of hydrocarbons?

    asked by tim
  114. Environmental Science

    4. You may never live in a big city, but we must all find ways to lower our environmental impact. What can the average citizen do with a minimum of cost and inconvienence to become more environmentally friendly?

    asked by lisa
  115. math

    compare the units for primmeter,area,and volume how are they diffrent and how are they the same

    asked by alexa
  116. Environmental Science

    #54. In two or three well-developed paragraphs, define and list two characteristics of each of the following: coastal wetlands, coral reefs, and oceans. I'm not sure what it means by defining and listing two characteristics. here's my answer: Coastal

    asked by y912f
  117. grade 12 chem

    hi, does anyone know any good websites on practicing reactions of hydrocarbons?

    asked by tim
  118. PHYSICS

    What is the magnitude of the electric field between two large parallel plates 2.0cm apart if a potential difference of 450 V is maintained between them?

    asked by Anonymous
  119. com 220

    Ceckpoint Introduction and conclusion. I am having a problem with writing an introduction for my research paper and a conclusion. My research paper is about education. But my professor said it has to be in a rough draft what does that mean. can somebody

    asked by ana
  120. MATHS

    The sides of a square were reduced from 10 cm to 7.5 cm. What is the percentage decrease in the area of the square?

    asked by BRYAN
  121. English

    Can you please help me check these sentences? Some of them don't make sense at all.I tried to check some of them though. 1) Brutus has a strong sense of republican liberty 2) Brutus fears what Caesar could (would/may) become if he were crowned. 3) He is

    asked by Franco
  122. math

    what did the baby porcupine say when it backed into a cactus?

    asked by Anonymous
  123. ENGLISH

    CAN SOMEONE HELP ME WITH WRITING AN EPIC POEM ABOUT A HERO? MY ASSIGNMENT IS DUE MAR. 1. IT HAS TO BE 4 PAGES LONG.

    asked by ANDREW
  124. math

    HOW DO i SET THIS UP AS A PROPORTION? 2,640 FT=X MILES

    asked by aLI
  125. math

    A jar is half full of vinegar and another jar twice its size is one quarter full of vinegar. Both jars are then filled with water. The contents are mixed in a third container. What part of the mixture in the third container is vinegar?

    asked by Anonymous
  126. Calc

    What is the integral of sin(x)*tan^2(x)? thanks

    asked by Michael
  127. environmental science

    Describe the major problems in today's large cities

    asked by Chelsea
  128. 5th grade

    A jar is half full with vinegar and another jar twice its size is one quarter full of vinegar. Both jars are then filled with water. The contents are mixed in a third container. What part of the mixture in the third container is vinegar?

    asked by Anonymous
  129. ALGEBRA

    add (r-7s+2)+(4r+6s)+(s+5) do i add like terms: (4r^2)+(-2s)+(7)

    asked by GGIFT
  130. English

    I forgot to include the following statements. 1) He decided to raise a tempest in order to make them been shipwrecked (??)make them be shipwrecked? 2) The island had been put under a spell by the witch Sykorax,who locked up some spirits in bodies (??) of

    asked by Franco
  131. environmental science

    What can be done to help solve problems about major problems in large cities?

    asked by amanda
  132. operating system

    Consider a user types a document with a speed of 100 words per minute. Assume that an average word consists of 5 letters and ends by a break which can be a space, new line, TAB, or punctuation, and an average sentence consists of 20 words. Assume that a

    asked by Priya
  133. Organic Chemistry

    Suppose your assignment were to prepare the Glaser type product of a mixed reaction of a phenyl acetylene and propyne. How might the procedure in this experiment be modified so that the mixed product can be most efficiently isolated?

    asked by Max
  134. environmental science

    You may never live in a big city, but we must all find ways to lower our environmental impact. What can the average citizen do with a minimum of cost and inconvienence to become more environmentally friendly?

    asked by amanda
  135. reading/science

    we have to readsearch in the plants i have the the plant uranus and i'm wondering if you can give me some websites

    asked by kate
  136. science mathmatics

    Can you calculate the work needed to lift a 20.0-N book 2.0m

    asked by Imran
  137. environmental science

    what can be done to improve economic issue in cities

    asked by amanda
  138. 5th grade

    What are these words? _:pants::pencil:eraser. plz help me!

    asked by HELP!
  139. 6th Grade Math

    Sara purchased a 24 oz tube of toothpaste for $6.95. What did she pay per ounce WORK THIS OUT THANKS

    asked by Melea
  140. math

    what is 4/7 devidid by 1 1/7+5

    asked by rosalia
  141. 5th grade math

    The length of a rectangle is a multiple of 5in. The width is 4.8 in. The area is between 80in.2 and 100in.2 What is the length of the rectangle? I an really confused on this problem! Please help & explain. thanks

    asked by Meghan
  142. algebre II

    Factor and solve: 4x^3-32=0 Please so work so I can finish on my own with an example problem. Thanks!

    asked by Savannah
  143. Business

    Small companies typically have difficulty competing against large multinationals when their governments take part in regional trade blocs. What could governments do to help their small companies compete after the formation of such blocs

    asked by SUE
  144. Economic

    Interest rates for all types of credit are A. set by the state government B. set by the federal government C. set by commerical banks D. regulated by state and federal laws I think the answer is c

    asked by pam
  145. science

    How does oxygen production relate to the rate of photosynthesis?

    asked by matt
  146. 11th grade

    Factor f(x) = x^4 + x^3 – 8x^2 + 6x + 36 completely. Show all steps.

    asked by david
  147. calculus

    Consider the function below. g(x) = 2 - x^3 (a) Find g'(0). (b) Use it to find an equation of the tangent line to the curve y = 2 - x^3 at the point (0,2).

    asked by Rob
  148. classroom instruction

    Explain how a teacher can monitor student homework o Identify a time-efficient way to monitor independent student work (other than a student raising a hand to signal a need for help). o Describe two ways to refocus student attention when students are

    asked by scooby
  149. calculus

    A particle moves along a straight line with equation of motion s = f(t), where s is measured in meters and t in seconds. Find the velocity and speed when t = 9. f(t) = t ^-1 - t

    asked by Rob
  150. ALGEBRA

    Suppose it takes 3 days for a space vehicle to travel from the Earth to the moon. About how long would it take the same vehicle traveling a the same speed to reach Neptune?

    asked by GGIFT
  151. calculus

    This limit represents the derivative of some function f at some number a. Select an appropriate f and a. 1f(x) = x4, a = 4 f(x) = x1/4, a = 4 f(x) = x1/4, a = 256 f(x) = ãx, a = 256 f(x) = ãx, a = 16

    asked by Rob
  152. MATH

    f(x)= 3x+9/(x^2-100) If this function has a horizontal asymptote, give its y-value Find the x-intercept(s). Find the y-intercept

    asked by Andrew
  153. physics

    A 24-µF capacitor has an electric potential difference of 30 V across it. What is the charge on the capacitor?

    asked by kjhlkj
  154. physics

    A 9.1-µF and a 6.8-µF capacitor are each charged to 2.5 multiplied by 10-4 C. Which has the larger electric potential difference?

    asked by kjhlkj
  155. math

    88 is 32% of what number

    asked by Heather
  156. math

    Money is deposited in an account for which the interest is compounded continuously. If the balance doubles in 6 years, what is the annual percentage rate? Can someone show me how to set this up? I have to use the equation: M(t)= Ce^(kt). Thanks.

    asked by ciara
  157. Writing

    please assist me with writing a good report. My grades are really low and i need this report to be great. I have to write on Black history Report on Black abolitionist,politicians and military.The letters I have is S-Z like al sharpton. please give me some

    asked by keysha
  158. math

    would (3x^4/15)^2 be x^8/25 when finally simplified?

    asked by Annie
  159. Chemistry

    Assuming complete dissociation of the solute, how many grams of KNO_3 must be added to 275mL of water to produce a solution that freezes at -14.5C? The freezing point for pure water is 0.0 C and K_f is equal to 1.86 C. Delta T= Kf*m*i i=2 m=3.90 solvent

    asked by Melanie
  160. Social Studies

    what are the requirements of a pilot

    asked by Kayona
  161. math

    i am having a minor difficulty i've been stuck for over an hour and don't know what to do i don't know is this right ? = "+" or "-" # = number y=3 (x-3)^2 + (y-4)^2 = 9 i substitute y (x-3)^2 + (3-4)^2 = 9 (x-3)^2 + 1 = 9 x^2 - 6x + 9 + 1 = 9 x^2 - 6x + 10

    asked by larry
  162. SCIENCE

    1. what elements are soda cans made of? 2. what materials were used in (making) the soda can?

    asked by Happy Face
  163. Honors Chemistry

    Hi "Ka for HCN is 4.9 x 10^-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide?" How do I do this question? Thank you very much

    asked by bess
  164. grammar

    Hey! I need some help identifying the parts of speech quote from Macbeth. (For example I need help identifying the independent clauses, dependent clauses,subj, appositive, gerunds, etc.) The service and loyalty I owe, In doing it,pays itself.Your

    asked by Adam
  165. AP Chemistry

    Nitric acid is a strong acid. Does this mean that a) HNO3 dissociates completely to H+ (aq) and NO3 ^1- (aq) when it dissolves in water OR b) aqueous solutions of HNO3 contain equal concentrations of H+(aq) and OH- (aq) Thank you!

    asked by DrBob222 fan :)
  166. math

    what is the centripetal force acting on each kilogram of an airplane that is turning at 200 m/s in a horizontal circle of radius 10,000m?

    asked by andrew gonzalez
  167. Honors Chemistry

    Will a base + H2O ALWAYS from a basic solution? (not a neutral or acidic solution)

    asked by Thea
  168. chemistry

    if you start with 5.5grams of magnesium chloride,how many grams of magnesium flouride will be produced?

    asked by amber
  169. global

    Why would so many women miners prefer to work in the mines without clothing? Why did the women need the heavy belts around their waists and chains between their legs?

    asked by danny
  170. re:math

    i am having a minor difficulty i've been stuck for over an hour and don't know what to do i don't know is this right ? = "+" or "-" # = number y=3 (x-3)^2 + (y-4)^2 = 9 i substitute y (x-3)^2 + (3-4)^2 = 9 (x-3)^2 + 1 = 9 x^2 - 6x + 9 + 1 = 9 x^2 - 6x + 10

    asked by larry
  171. Physics

    A 3.9-kilogram block sliding down a ramp from a height of 5.2 meters above the ground reaches the ground with a kinetic energy of 36 joules. The total work done by friction on the block as it slides down the ramp is approximately

    asked by Anonymous
  172. mth

    (2)^-2 ?

    asked by belinda
  173. chemistry

    Nitric acid is a strong acid. Does this mean that a) HNO3 dissociates completely to H+ (aq) and NO3 ^1- (aq) when it dissolves in water OR b) aqueous solutions of HNO3 contain equal concentrations of H+(aq) and OH- (aq) Thank you!

    asked by someone
  174. Economic

    Interest rates for all types of credit are A. set by the state government B. set by the federal government C. set by commerical banks D. regulated by state and federal laws I think the answer is c

    asked by pam
  175. Science

    Here is a question on my science worksheet, "if a projectile's fall matches Earth's 'BLANK', the projectile will not hit earth." i need help figuring out what would go in the blank!

    asked by Morgan
  176. Math

    Kee had to buy 2 tires and patch the tires on his bicycle 3 times this year. How much did he spend repairing his bicycle if these were all the repairs he needed? Use the variablees x and y to write an expression for the cost of kee's repairs. then find the

    asked by PAVLEEN
  177. english

    how can you summarize this paragraph? A primary succession occurs when the change in species composition than in a previous uninhabited environment. This means no soil exists when the primary succession starts. An example of a primary succession is

    asked by derrius
  178. Physics

    At what distance from a carbon nucleus is the electric potential 2.1 V? Carbon atoms have 6 electrons in the atomic shell.

    asked by Susie
  179. electric potential

    Given a square of side length a = 6 cm. We place a charged particle at each corner, three of them carry +7 nC of charge and one carries the same amount of negative charge. What is the electric potential at the center of the square? Choose V = 0 V for a

    asked by Jeff
  180. Physics

    An unknown potential difference exists between the inner and outer surfaces of the membrane of a cell. The inner surface is negative relative to the outer surface. If 2.5 x 10-20 J of work is needed to eject a positive Calcium ion (Ca2+) from the interior

    asked by Susie
  181. Biology

    39. Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to

    asked by mysterychicken
  182. math

    jill has a recipe that calls for 12 cups of water.her measuring cup holds 1 pt. how many times does jill need to fill the measuring cup????? please help me

    asked by Katherine
  183. calculus

    f'(x) of f(x)= 4e^x/1-e^x

    asked by ashley
  184. HELP ME NOW!!!

    could you please answer my question? I need to go read my book. my mom is getting upset! i an sorry, i don't mean to be snobby but i really need help!

    asked by Morgan
  185. Chemistry

    What type of extraction can be used to separate Hexane and a substance soluble in it?

    asked by Jose-Ann
  186. math

    how long is a line

    asked by Lucy1
  187. math2

    what is a ray

    asked by liliana2
  188. math

    what is the factor of 15 and 24

    asked by lily3
  189. Chemistry

    If you are a mixture of ammonium chloride, barium sulphate and sodium chloride how would you produce a pure dry sample of each of those chemicals for the mixture.

    asked by Jose-Ann
  190. PHYSICS

    (a) What is the electric potential a distance of 2.3 10-15 m away from a proton? Answer for this part is :626000 (b) What is the electric potential energy of a system that consists of two protons 2.3 10-15 m apart-as might occur inside a typical nucleus?

    asked by SHUBHANGI
  191. math

    what is the prime factorization 300

    asked by MEGAN!!!!!!!!!!!!!!!!!!!!!!!
  192. PHYSICS

    Two point charges, 6.0 µC and -2.0 µC, are placed 6.0 cm apart on the x axis, such that the -2.0 µC charge is at x = 0 and the 6.0 µC charge is at x = 6.0 cm. (a) At what point(s) along the x axis is the electric field zero? (If there is no point where

    asked by SHUBHANGI
  193. MATH

    what is the GCF 16 and 40

    asked by SANA
  194. math

    what is the LCM for 16 and 24

    asked by KYLE : )
  195. math

    what is the LCM 10 and 35

    asked by BESTY : )
  196. geometry please help

    please help me with the question I posted at 4:56pm today

    asked by mike
  197. literary

    what is personification, polysyllabic humor,synaesthesia, and vernacular??

    asked by tiffany
  198. social studies

    How are Urban and Rural related

    asked by Brody
  199. Calculus

    If f(2)=3 and f'(2)=5, find an equation of a. The tangent line b. The normal line to the graph of y=f(x) at the point where x=2 So I plotted (2,3) and (2,5)...but that's not getting anywhere... Thanks

    asked by Anonymous
  200. Math pple

    what prime factorization 25

    asked by KARLA !!!!
  201. biology

    If catalase enzyme was placed in a test tube and heated to 100 degrees what results would you expect from a glowing splint test?

    asked by franky
  202. MATH

    10-___+9=59

    asked by KhIn
  203. pre calc

    f(x)={8 x + 9}/(2 x + 7)(8 x + 6) -Find the x and y intercepts. -How would I go about finding the x and y intercepts in problems like this?

    asked by Karissa
  204. geometry

    what is the perimeter of a triangle whose sides measure 7 3/4 inches,9 1/4 inches,and 10 1/2 inches,respectively?

    asked by yuku
  205. Trigonometry

    A translation maps (-6,2) onto (-4,-2). Find the image of (3,5) under the same translation.

    asked by Tyler
  206. Science

    I am having trouble finding anything to answer this question. Any help I would appreciate it! Describe Darwin's Theory of Natural Selection and indicate why species are able to adapt to changes in their enviroment. Be sure to include a discussion of how

    asked by stephanie
  207. English

    I'm doing a competition & this time it's about vincent van gogh. it has to have gogh in it. mainly his family tree. ex. Family tree -dizzy aunt....vertigogh -brother who ate lot of pruns.. gottagogh -brother who worked at the 7 11..stop and gogh -his

    asked by Sara
  208. Science

    I`m a 5th grade student and we are haviing a Sound Science test.I`m looking for defenitions to study from.such as vibrations, decibels, frequency and questions dealing with sound travel. is there a site you could recomend? thank you, cassidy

    asked by Cassidy
  209. 6th grade

    What geometric concept is modeled by the beam of a flashlight?

    asked by Izaac
  210. PHYSICS

    Two small metal spheres with masses 2.0 g and 4.0 g are tied together by a 5.0 cm long massless string and are at rest on a frictionless surface. Each is charged to +2.0 ìC. (b) What is the tension in the string? (c) The string is cut. What is the speed

    asked by Arianne
  211. math

    you got 4 numbers 7,2,6,8 you can add, subtract, multiply, and divide.. how do those 4 numbers =24 or can they?

    asked by jerson
  212. geometry

    a cylinder water tower is three-fourths full of water.the tower is 24 feet tall and has a diameter of 28 feet.how much water is in the tower now?

    asked by yuku
  213. PHYSICS

    An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 1.00 × 104 V. (a) Find the final velocity after the original acceleration period. (b) It then passes between two horizontal plates 6.0 cm long and

    asked by Arianne
  214. Math

    what day and month was Lai-Sang Young born in?

    asked by Michelle
  215. social studies

    what was the nile river used for?

    asked by Anonymous
  216. math

    Consider the parabola that passes through the points (2,6)(-1,12) and (0,6) Find the equation and the vertex

    asked by janet!
  217. math

    how can i show my work by long division by dividing8 from 100 show work.

    asked by Elisa Romero
  218. math

    If a movie ticket now averages $6.75 and has been increasing an average of 15% per year compute the cost: in 8 years 8 years ago

    asked by kali
  219. math again

    You have a bag with 60 black jelly beans and 240 red ones. a) If you draw one jelly bean out of the bag, find the probability that it is black. -------60/300= 1/5 b) If you add 60 black jelly beans to the original bag and draw out a bean, what is the

    asked by kali
  220. SCIENCE

    1. what 2 elements are soda cans made of? 2. what materials were used in (making) the soda can?

    asked by Happy Face
  221. Trigonometry

    1) If P'(2,-6) is the image of point P after the dilation D(to the 2nd power), what are the coordinates of point P? 2) A transformation maps (x,y) onto (x+2, y-1). Find the coordinates of A', the image of point A(-2,6) under the same transformation.

    asked by Tyler
  222. environmental science

    How has the size and location of big cities changes since the year 1900

    asked by amanda
  223. Trigonometry

    1) Find the coordinates of the point (-1,3) after the transformation T (to the -3,2 power) 2) What are the coordinates of point (-3,4) under D (to the 3rd power)? 3) Which of the following transformations could map the point (1,2) onto the point (3,6)? a)T

    asked by Tyler
  224. physics

    convert 120 cm to meters

    asked by Anonymous
  225. geometry

    a cylinder water tower is three-fourths full of water.the tower is 24 feet tall and has a diameter of 28 feet.how much water is in the tower now? CAN SOMEONE PLZ PLZ PLZ HELP ME

    asked by yuku
  226. social studies

    how did missions help establish a spanish presence in the southwest?

    asked by De'Ja
  227. Chemistry

    The reaction of 1,6-hexanediamine with hexanedioic acid chloride to form nylon 6-6 is a condensation polymerization. What is the small molecule that is split off in each step of the reaction?

    asked by Holly
  228. Chemistry

    What is the repeating unit of nylon 6-6?

    asked by Holly
  229. Anatomy & Physiology II

    I've included answers as well. Thanks in advance. 1. Chemical substances secreted by cells into the extracellular fluids that regulate the metabolic function of other cells in the body are called: a. enzymes b. antibodies c. proteins d. hormones I chose D

    asked by Ana
  230. Biology

    Why is it important to plant your vegetables in a different part of the garden each year.

    asked by Steve
  231. Biology

    Why is it a good idea to dig compost into the soil.

    asked by Steve
  232. trigonometry

    How to verify this identity: 1+ tan x (over) = secant x sine x + cos x

    asked by Debi
  233. Biology

    Why is it a good idea to give a potted plant some plant food every week or so

    asked by Steve
  234. Biology

    Give two reasons why soil may become poor in mineral nutrients.

    asked by Steve
  235. mittens vs gloves debate

    why are mittens better than gloves? I have to do a debate.

    asked by BubblyStar
  236. biology

    its know that high plumage color in birds causes then to compete for nests better than dull birds. how does the hypothesis that males with high plumage color make offspring high plumage color support the first statement?

    asked by Nick
  237. English-Help

    which one is better, your opinion counts. His hungry sister...lego my egogh How could I improve the wordings of this? His wife's sister...Dont gogh His wife’s sister...Time ta go -vincent's wife.. let me gogh I wanted to do ne with indigo, but I don't

    asked by Sara
  238. physics

    a 17.0kg crate is to be pulled a distance of 20.0m requiring 1210J of work being done. If the job is done by attaching a rope and pulling with a force of 75.0 N, at what angle is the rope held? W=Fd(cos) 1210J=(170)(20m)(cos)

    asked by Anonymous
  239. physics

    Barry Bee is flying through the air when he is struck by a truck. Which encounters more force, him or the truck?

    asked by nate
  240. geometry

    if the slope of a line is undefined, what is the point slope form? coordinate C (-2,-2) d (1,-2)

    asked by ying
  241. 6th grade world cultures

    why would people in the same ethnic group live in different countries

    asked by samantha k
  242. physics

    an elevator lifts a total mass of 1.1x10^3 kg, a distance of 40 m in 12.5 s. How much power does the elevator demonstrate? P=w/t w=mgd (1.1x10^3)(9.8)(40)=4.3x105J 4.3x10^5J/12.5=3.4x10^4 is this right or should 12.5 s be converted?

    asked by Anonymous
  243. geometry

    if a regular octagon has a perimeter of 264 centimeters, what is the measure of each interior angle and each side?

    asked by Trevor
  244. math

    How many people do you need in a room in order to guarantee that there's a group of three people, each of whom has the same initials (first and last name only)? 676 677 1352 1353 I know that there are 26 letters of the alphabet. If I multiply 26 x 2 = 52

    asked by M.A.
  245. surface area and volume

    A rectangular prism has a volume of 48 cubic feet and surface area of 88 square feet. what are its dimensions? plz help me

    asked by yuku
  246. Ms. sue can u help me

    thx but wat is the volume Ms. Sue

    asked by yuku
  247. jus wonderin

    Why do you like Psychology?. What specific aspects of Psychology do you enjoy?...abnormal, cognitive, biological... What questions have you always seeked an answer for?.

    asked by lola
  248. Social Studies

    How does the U.S constitution provide for stability and continuity in the sentate?

    asked by Minaj
  249. math

    f(x)=square root of (5-x)/(x-8) -What is the domain?

    asked by Anonymous
  250. can someone plz help me

    A rectangular prism has a volume of 48 cubic feet and surface area of 88 square feet. what are its dimensions? plz help me

    asked by yuku
  251. 4th grade social studies

    why is the southwest a fast-growing region today

    asked by De'Ja
  252. Chemistry

    "A mass of 45.0g of molten silver at its melting point is poured into 750mL of calorimeter water at 25.0C. The final temperature reached by both is 30.0C. If the specific heat capacity of silver is 0.235 kJ/kgC, calculate the molar heat of solidification

    asked by Stuck
  253. Ms. sue can u help me

    A rectangular prism has a volume of 48 cubic feet and surface area of 88 square feet. what are its dimensions? plz help me

    asked by yuku
  254. reading

    does anyone know a good site w/ a summary of the book; "Warriors Don't Cry" by Melba Pattillo Beals, and for the book; "Hidden Child of the Holocaust"; by Stacy Crezmeyer??? Please help asap!! Thanks!!

    asked by Ashley
  255. PHYSICS

    The electron gun in a television tube uses a uniform electric field to accelerate electrons from rest to 5.0×107 m/s in a distance of 1.2 cm. What is the electric field strength?

    asked by Lucas
  256. 4th grade social studies

    Ms.Sue, obviously I couldn't find the answer.

    asked by De'Ja
  257. algebra

    You have a bag with 60 black jelly beans and 240 red ones. a) If you draw one jelly bean out of the bag, find the probability that it is black. -------60/300= 1/5 b) If you add 60 black jelly beans to the original bag and draw out a bean, what is the

    asked by desperate!
  258. math-geometry

    we have a test tomorrow and she said that a problem like this is going to be on there how do you do it???? Consider the parabola that passes through the points (2,6)(-1,12) and (0,6) Find the equation and the vertex

    asked by janet!
  259. Volume and surface area

    A rectangular prism has a volume of 48 cubic feet and surface area of 88 square feet. what are its dimensions? plz help me

    asked by yuku
  260. accounting

    received 125000 on account from a major customer. wht is the entries for this?

    asked by Shaalu
  261. physics

    In a rescue, the 80.0 police officer is suspended by two cables 35 degrees and 48 degrees. Find the tension in both cables?

    asked by Alex
  262. English-Ms. Sue OR Writeacher

    How are these: which one is better, your opinion counts. His hungry sister...lego my egogh How could I improve the wordings of this? His wife's sister...Dont gogh His wife’s sister...Time ta go -vincent's wife.. let me gogh I wanted to do ne with indigo,

    asked by Sara
  263. Just wondering if there is any1 who can help w A&P

    thanks

    asked by Ana
  264. english

    I need a web to search for antonyms

    asked by Marie
  265. geometry

    if the slope of a line is undefined, what is the point slope form? coordinate C (-2,-2) d (1,-2)

    asked by ying
  266. geometry

    a cylindrical oil drum is 6 feet long and has a radius of 2.5 feet? A-to the nearest cubic foot,what is the volume of this drum?

    asked by yuku
  267. algebra

    suppose you are starting an office-clening service. You have spent $315 on equipment.To clean an office, you use $4 worth of supplies.Yoou charge $25 per office. How many offices must you clean to break even?

    asked by Anonymous
  268. math

    suppose you are starting an office-clening service. You have spent $315 on equipment.To clean an office, you use $4 worth of supplies.Yoou charge $25 per office. How many offices must you clean to break even?

    asked by vanessa
  269. Economics

    How does the local, state, or national economy affect your business or place of work? Are there businessess that are relatively recession- or depression-proof? Why or why not? Are there businesses that may not prosper to the same extent as others during an

    asked by Van
  270. business

    Suppose the price of apples rises from $3.50 a pound to $4.00 and your consumption of apples drops from 30 pounds of apples a month to 20 pounds of apples. Calculate your price elasticity of demand of apples. What can you say about your price elasticity of

    asked by jward1970