Questions Asked on
September 23, 2008

  1. Partial Pressure- Chemistry

    A gaseous mixture of O2 and N2 contains 31.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 445 mmHg?

    asked by Sarah
  2. chemistry

    For each of the following chemical reactions: a.)classify the reaction as combination, decomposition,single replacement, or double replacement. b.)complete the word equation. c.)using the formulas for both reactants and products, balance the chemical

    asked by Yeah
  3. Enthalypy Reaction

    What is the standard enthalpy of reaction for the following chemical reaction? CO2(g) + 2KOH(s) --> H2O(g) + K2CO3 (s) Express your answers numerically in kJ.

    asked by Sarah
  4. Physics Projectile Motion

    A rifle is aimed horizontally at a target 50m away. The bullet hits the target 2.0cm below the aim point. A. What was the bullet's fight time? B. What was the bullet's speed as it left the barrel?

    asked by Erinne
  5. Physics Projectile Motion

    A rifle is aimed horizontally at a target 50m away. The bullet hits the target 2.0cm below the aim point. A. What was the bullet's fight time? B. What was the bullet's speed as it left the barrel? But i do not have the time and the equation i think in the

    asked by Erinne
  6. SCI

    so would it be better to place a wilted flower in tap water or distilled water? Answer: I would say distilled water because it contains a lower cocnentration of solute than the flower and therefore the water would more easily diffuse into the flower. Tap

    asked by Lena
  7. chemistry

    Question 1. A Compound Containing 3 Atoms Of Carbon & 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The 2 End Products Of This Equation Are Carbon Dioxide &water. What Element Should You Look At 1st In Balancing This Equation? Choose

    asked by Jen
  8. Chemistry - please answer

    I think I managed to totally screw up my computer so I did already post this question, but from what I see it is gone now. I don't really know if its actually there or not cuz I can't do anything with computers but here is the question: Hydrogen cyanide is

    asked by ari
  9. stoichiometry

    Hydrogen cyanide is produced industrially from the reaction of gaseous ammonia, oxygen, and methane. 2 NH3(g) + 3 O2(g) + 2 CH4(g) ¨ 2 HCN(g) + 6 H2O(g) If 5.27 103 kg each of NH3, O2, and CH4 are reacted, what mass of H2O will be produced, assuming

    asked by ari
  10. Chemistry

    Question 1. A Compound Containing 3 Atoms Of Carbon & 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The 2 End Products Of This Equation Are Carbon Dioxide &water. What Element Should You Look At 1st In Balancing This Equation? Choose

    asked by Jen
  11. Physics:Projectile Motion

    A rifle is aimed horizontally at a target 50m away. The bullet hits the target 2.0cm below the aim point. A. What was the bullet's fight time? B. What was the bullet's speed as it left the barrel?

    asked by Erinne
  12. Algebra 1 honors

    A pineapple drink contains 15% pineapple juice. How much pure pineapple juice should be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice.

    asked by Lisa
  13. science

    trace the energy transformations from a radio signal to the music you hear

    asked by bailey
  14. Social Studies

    Fascism in Germany differed from fascism elsewhere in Europe in its extreme emphasis on: a. racism b. elitism c. militarism d. nationalism ...and why?

    asked by Anonymous
  15. Calorimetry Chemistry

    Please help with these questions. Thanks Consider the reaction C12H22O11(s)+ 12O2(g)-->12CO2(g)+11H2O(l)

    asked by Sarah
  16. Chemistry

    Three gases (8.00 of methane,CH4 , 18.0 of ethane,C2H6 , and an unknown amount of propane,C3H8 ) were added to the same 10.0-L container. At 23.0 degress celsius , the total pressure in the container is 3.90 atm. Calculate the partial pressure of each gas

    asked by Sarah
  17. Science

    I grew in a cave, but i'm not alive. i began as water and minerals, but now i am solid. i grow upwards, but i never see the sky. What am i?

    asked by Samantha
  18. physics

    A sailor in a small sailboat encounters shifting winds. She sails 2.00 km east, then 3.50 km southeast, and then an additional distance in an unknown direction. Her final position is 5.80 km directly east of the starting point. a) Find the magnitude of the

    asked by Star
  19. math

    i don't understand standard form math and i have to questions what is nine hundredths in standard form and sixteen and six tenths in standard form?

    asked by tamija
  20. Mathematics

    Carletta has $10,000 to invest. As her financial consultant you recommend that she invest in Treasury Bills that yield 6%, Treasury Bonds that yield 7%, and coroporate bonds that yield 8%. Carletta wants to have an annual income of $680, and the amount

    asked by Anonymous
  21. bob -sci.

    keeping osmosis in mind, would it be better to soak wilted flowers in distilled water or normal tap water? I was thinking tap but I`m not sure why I`m thinking that. Maybe because tap water has a higher solute concentration that than distilled. i`m not

    asked by Lena
  22. Algebra

    The hypotenuse of a right triangle is 5cm long. One leg is 3cm longer than the other leg. Find the dimensions of the shorter leg. (give your answer in radical form)

    asked by mary
  23. ALGEBRA

    A painter is to mix green and yellow paint in the ratio of 4 to 7 to obtain the color she wants. If she has 28 liters of green paint, how many liters of yellow paint should be added? I need to know what algebraic equation I need to use...I believe this is

    asked by JAY10
  24. macroeconomics

    Year - 2000 Nominal GDP: 9,817 Real GDP: ___________ GDP Deflator: 1 Inflation 2.2 Real GDP Per capita: _________ Population 283.7 Year – 2001 Nominal GDP: ________ Real GDP: 9,891 GDP Deflator: _________ Inflation 2.4 Real GDP Per capita: _________

    asked by Ella
  25. chemistry

    In the extraction of an organic compound from a dilute aqueous solution, will the organic solvent form the uppoer or lower layer when each of the following solvent is used? a. chloroform b. cyclohexane c. heptane d. dichloromethane

    asked by Poole
  26. trig

    The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s= 2 sin pi t + 3 cos pi t, where t is measured in seconds. (a) Find the average velocity during each time period: (i)[1,2] (ii)

    asked by Sarah
  27. Business - Sources of finance

    I have an assignement to do based on different types of sources of finance... im part way through exteral sources, i want to know how shareholders generate capital for a business Please could somebody help me or point me in the right direction? cheers

    asked by Sam
  28. physics

    A crate of mass m (=40 kg) is placed at rest on a (frictionless) inclined plane, which has an angle (= 30o) above horizontal. a.) The force of gravity on the crate is: b.) The normal force on the crate is: size: N c.) The net force on the crate is: size: N

    asked by kelsey
  29. Calorimetry

    A calorimeter contains 21.0 mL of water at 12.0 degress Celsius. When 2.40g of X (a substance with a molar mass of 50.0 g/mol ) is added, it dissolves via the reaction X(s)+H2O(l) --> X (aq) and the temperature of the solution increases to 29.5 degress

    asked by Sarah
  30. Grade 11 maths plz help!!!

    A software company started with 2 employees. In 6 months, the company had 7 employees. The number of employees increased in a steady rate. Which equation models the relationship between the number of employees n and the number of months m since the company

    asked by Anjali
  31. physics

    a thin wire with linear charge density _ is surrounded by a conducting cylindrical shell. (a) If the electric field must be zero inside a conductor, is the electric field due to the wire shielded from extending beyond the conducting shell? (b) Find the

    asked by al
  32. Volcanoes

    Why does high silica magma tend to from volcanic domes with steep sides?

    asked by Darla
  33. Microeconomics

    In a natural monopoly: A) Society would be better off if antitrust laws were used to create many different firms in the market B) The marginal cost curve is positively sloped C) If the government requires marginal cost pricing, it must pay the monopolist

    asked by G
  34. science

    so would it be better to place a wilted flower in tap water or distilled water? Answer: I would say distilled water because it contains a lower cocnentration of solute than the flower and therefore the water would more easily diffuse into the flower. Tap

    asked by Lena
  35. College Algebra Word Problem

    I have been racking my head with this one and don't know how to approach it. The question is: A bank loaned out $64,000, part of it at the rate of 13% per year and the rest at a rate of 5% per year. If the interest received was $6000, how much was loaned

    asked by Marlon
  36. math

    what happens to a man who carries an ax in his teeth?

    asked by jessica
  37. Literature

    In Lord of the Flies, what does Piggy suggest they can do with their hair?

    asked by Abriel
  38. CHem

    Sterling silver is a mixture of silver and copper having a mole ration of silver to copper equal to 7.8 what is the mass percent composition of this mixture? Ok I know the answer to this and I know how its done: 1 mol Cu weighs 63.5 g 7.8 mol Ag weigh

    asked by natash
  39. sci.

    keeping osmosis in mind, would it be better to soak wilted flowers in distilled water or normal tap water? I was thinking tap but I`m not sure why I`m thinking that. Maybe because tap water has a higher solute concentration that than distilled. i`m not

    asked by Lena
  40. Chemistry

    2HCr4- + 3HS03- + 5H+ -> 2Cr3+ + 3SO4^2- + 5H20. At t=0, 0.0249 mols of HCr04- are loaded in to 250ml of solution. After 1/10 of an hour, 0.00852 mol of HCrO4- remain. Assuming the solution volume remained the same, how many grams of water were formed per

    asked by Tri
  41. HHS 225

    1.what have been the most significant changes in health and human services over the past fifty years? 2. How has society responsibility to individual needs changed in the last ten years? 3. Who should determine health and human services need? 4. What

    asked by Silvia
  42. Social Studies

    Through which four South American countries does the 20 degrees South line of latitude pass

    asked by Kaitlin
  43. college board

    what does the SQ3R method stand for?Example: S- Q- R- R- R-

    asked by brooke
  44. math

    ok so I asked a question like this before and I understood how to do it and a cuple more like it but now I don't understand how to do this on ..... I keep on trying to find the answer but I just don't understand what I am supposed to do -5(2w+1)=25

    asked by Sara
  45. Mathematics

    Carletta has $10,000 to invest. As her financial consultant you recommend that she invest in Treasury Bills that yield 6%, Treasury Bonds that yield 7%, and coroporate bonds that yield 8%. Carletta wants to have an annual income of $680, and the amount

    asked by Kevin
  46. Algebra Continued

    2)A motorboat leaves a dock and travels at an average speed of 15mi/h toward an island. The average speed on the return trip is 10mi/h. How far is the island from the harbor if the total trip takes 5h? (HInt-first find the 2 times)

    asked by Chris
  47. English

    In the book Dr. Dolittle is it written in 1st person, 2nd person, or 3rd person omniscent or limited?

    asked by Aliyah
  48. ?

    how do I do a chapter outline .... my teacher said we should have already learned how to do it but I have never learned how to do one.

    asked by Sara
  49. HISTORY

    1. WHAT WERE THE CONSEQUENCES THAT LEAD MUSLIMS KINGS TO ATTACK INDIA ? 2. wHAT WAS THE SECRET BEHIND THE VICTORY OF MUSLIM KINGS ?

    asked by DIGVIJAY
  50. Math

    Sppose each friend received $39 from selling the 13 t-shirts.How much profit did the students earned for each shirt?

    asked by N 'aicha
  51. Chemistry

    Hello, I am having trouble with a question from my chem lab. Here is my data Weight of empty crucible and cover = 21.113 g Weight of crucible, cover, MgO and Mg3N2 = 21.906 g Weight of crucible, cover, MgOand addition of H2O and heat =21.909 g The change

    asked by Steve
  52. Science Fair

    My school has a Science Fair coming up and I would really like to win this year with an impressive EXPERIMENT! Any suggestions? I am in 11th grade.

    asked by Rhondi
  53. english

    Can someone help me find the thesis in this article Please? In coming to grips with AIDS, the worst health calamity since the Middle Ages and one likely to be the worst ever, consideration inevitably turns to the numbers. According to estimates from

    asked by Anonymous
  54. physics

    the region 0 < r < r1 is a charged insulating sphere with uniform charge density _E, the region r1 < r < r2 contains free space, and the region r2 < r < r3 is an insulating spherical shell with uniform charge density ��_E. What is the

    asked by al
  55. chemistry

    Which of the following accurately shows the correct terms for the two sides of a chemical equation, correctly placed to the left or to the right where they belong, and also shows the correct symbol that is written between them? Choose a,b,c, or d. the

    asked by Jen
  56. Chemistry

    Which of the follwing is NOT acidic? a. Milk b. saliva c. soft drinks d. blood I believe the answer is d

    asked by Jen
  57. math

    if y is equal to the logarithm of x to the base 5, what is the logarithm of x to the base 25 in terms of y?

    asked by Kidist
  58. english

    ms sue r u a real teacher or a computer?

    asked by Sarah
  59. biochem.

    why is it important for the intravenous fluids to have the same solute concentration as your blood? Answer: If the intravenous fluids did not have the same solute concentration, then the red blood cells would shrink, if the intravenous fluids were

    asked by Lena
  60. Math

    Write 9+7 as a sum of three numbers, two of which add to 10.

    asked by V
  61. 10th grade

    In addition to sight how else do fish sense their surroundings?

    asked by Heather
  62. logarithm

    Solve the equation for x. e^ax=Ce^bx, where a cannot equal b So is the answer x=(1/a-b) ln C

    asked by Sarah
  63. math

    -5(2w+1)=25 can someone give me step by step insructions to solve this question because I don't understand what I am supposed to do first

    asked by Sara
  64. Algebra

    I have no clue how to do this (uniform motion 1)2 bycicles start from the same point and ride in opposite directions. 1 rider is moving twice as fast as the other. In 3h, they are 72mi apart. Find the rate of each rider

    asked by Chris
  65. Mathematics

    3x-3y=12 3x+2y=-3 2x+y=4 Solve each by reduced row echelon form and if no solution, say it is inconsistent.

    asked by Kevin
  66. math

    Write an equation of the line that passes through(6, -10) and is parallel to the line x = 5.

    asked by Tiffany
  67. Math

    If the three friends equally divide the profit from selling the 13 t-shirts, how much will each receive?

    asked by N 'aicha
  68. lab chem

    If toluene (density 0.87) wre used to extract ethylene bromohydrin (density 2.41) from an aqueous solution, a. Could you be certain that the organic solution would form the upper layer? b. by what test could you identify the nonaqueous layer.

    asked by Poole
  69. Science

    road salt has been dropped on grass. keep osmosis in mind, what would happen? answer: since the road salt is hypertonic solution and therefore the water in the grass would diffuse into the road salt thus causing the grass to die. Is this right? What should

    asked by Lena
  70. Language

    Rewrite this sentence using (It) ate the beginning. As it was moving with great speed downhill its driver had difficulty trying to stop it. Thankyou

    asked by Rhondi
  71. math

    What least number must be added to 1056 to get a number exactly divisible by 23?

    asked by ra ny
  72. mathematics

    who introduced the Quadratic Formula?

    asked by chaska
  73. year 8 re

    i need to find 3 pieces of evidence of what jesus did and 3 things what jesus didn`t do. for the 3 things jesus did i have found feeding the 5000 , walking on water and healing the sick but i am having trouble finding evidence for what jesus did not do.

    asked by zoe
  74. american government

    what is split ticket voting?

    asked by lisa
  75. physics 3

    Static and Kinetic Friction: A 10 kg crate is at rest on a horizontal table (s =0.8, k =0.4). Then various amounts of horizontal pushing force are applied to it. a.) The largest pushing force that can be applied before the crate starts moving is of size: N

    asked by kelsey
  76. Economics

    (Value in billions of dollars) Consumption = 140 Business fixed and residential investment = 27 Inventory stock at the end of 2003 = 10 Inventory stock at the end of 2004 = 5 Depreciation = 12 Government outlays = 80 Government purchases = 65 Total

    asked by lucky
  77. Grade 11 maths!!!

    The drama club plans to attend a professional production. From 10 to 35 students will go. There is a one-time handling fee of $3. Each ticket costs $25 plus $2 surcharge. Write a linear function that models this situation. Show the work if possible

    asked by Anjali
  78. Social Studies

    Should governments tolerate the actions of dissident groups?

    asked by Anonymous
  79. SCI

    Hypothetically speaking, I placed a cell in a glass of water and after about a day the cell grew in size. Why did the cell grow? Well I was thinking this: The reason the cell grew was because there was a higher concentration of water outside of the cell

    asked by Lena
  80. English Lit

    I have to 'discuss the language' of some quotes which I have taken out of the text which I'm doing, but I'm not sure what to do. With this, do I have to talk about punctuation marks, specific words? Thanks!

    asked by Jess
  81. music

    the meaning of the word rest heads

    asked by jamie
  82. Chemistry

    Fill in the blanks with a, b, c, or d. When comparing the strength of bonds between molecules, Ionic bonds have _______ bonds, and molecular bonds have _____ bonds? a. very strong, weaker b. weak, strong c. strong, very strong d. weak, very weak I believe

    asked by Jen
  83. math

    Solve the system of equationds by graphing. u=v 4u=3v-3

    asked by RomanRamirez
  84. ENT125

    How do you think slavery influenced the evolution of both Black and White America today? Explain your answer

    asked by Anonymous
  85. science

    why is it important for the intravenous fluids to have the same solute concentration as your blood? Answer: If the intravenous fluids did not have the same solute concentration, then the red blood cells would shrink, if the intravenous fluids were

    asked by Lena
  86. statistics

    For the men age 18 and over the avg height was 69 inches with an SD of 3 inches and avg weight was 190 lbs with an SD of 42 pounds. the r value is around 0.41. Estimate the average weight of the men whose heights were 66in, 24 in, and 0in.

    asked by amanda
  87. Math

    Which of the following dimensions of a circle is always smaller than the other two? a. the circumfrence b. the diameter c. the radius d. it depends on the size of the circle I believe the answer is C

    asked by Diane
  88. Math

    Area is calculated in _______ dimensions, and volume is calculated in ___________? a. two, two b. two, three c. three, two d. three, three I think the answer is B

    asked by Diane
  89. Math

    Calculate the area of the base of a fountain if the distance from the center of the fountain to the edge of the base is 10ft a. 314 sq ft b. 414 sq ft. c. 514 sq ft d. 614 sq ft I believe the answer is A 3.14(10)(10) = 314 sq ft

    asked by Diane
  90. MATh/UNiT RATES

    FIND THE UNIT RATES AND WRITE THEM BOTH IN FRACTION AND WORD FORM. 7.Gabrielle bikes 78 miles in 6 hours.

    asked by DEANZA
  91. last question sci. :)

    road salt has been dropped on grass. keep osmosis in mind, what would happen? answer: since the road salt is hypertonic solution and therefore the water in the grass would diffuse into the road salt thus causing the grass to die. Is this right? What should

    asked by Lena
  92. Pre-algebra 7th NEED HELP

    This is a question my teacher gave me and there are no parenthesis or whatever you might think it needs. It's 20 divided by 4 minus 5 plus 12. I think the answer is -12, but I'm not sure. PLEASE HELP!!!

    asked by Laura
  93. history

    what does it mean that the united states has a mixed economy

    asked by kim
  94. Math

    Luna, Mason ,and Gabriel make and sell hand-painted t-shirts .They make a profit of D dollars for each shirt they sell.If they sell 13 t-shirts, how much total profit will they make?

    asked by N 'aicha
  95. alg

    find the inverse of y=6x + 3

    asked by jerson
  96. Algebra continued

    A car trveling at 88km/h. If the bus has a 1.5h head start, how far from the starting point does the car overtake the bus?

    asked by Chris
  97. math

    when you find the probability of an event happening by subtracting the probability of the event not happening from 1, we are usning

    asked by marie
  98. math

    How can I place the following set of numbers in ascending order. 20,-7,5,-5,12,4,15

    asked by PJ
  99. Math

    Suppose F more friends join the business.If the group sells 20t-shirts and divides the profit equally, how much will each friend receive?

    asked by N 'aicha
  100. Language

    Rewrite this sentence using "No" at the beginning. It doesn't matter whether you are busy or not, he always insists on accompanying you.

    asked by Rhondi
  101. Statistics

    Using the standard normal distribution tables, the area under the standard normal curve corresponding to Z > –2.62 is a. 0.0044. b. 0.0047. c. 0.9953. d. 0.9956. The answer is D How do i find the answer on the Table C or just in general?

    asked by Matt
  102. Spanish

    How do you conjugate "sugerir" in present tense? Thank you!

    asked by Momo
  103. Physics

    A computer and monitor use 800J of electric energy each second. The monitor produces 30J of light energy each second. The fan in the computer converts 15J each second into kinetic energy. The lights on the tower give off 10J of light energy. If all the

    asked by Jessica
  104. Social Studies

    How do bodies of water affect temperatures

    asked by DeeDee
  105. science

    how do u cite a source that has no info ur looking for? isnt that dumb, i mean im trying its not coming to me what should i do?

    asked by mikayka
  106. Social Studies

    How would you expect winter temperatures to differ in a coastal city at the same latitude as the interior city?

    asked by DeeDee
  107. earth geology

    What are the main differences between topographic and geologic maps?

    asked by Sassy
  108. College Algebra

    solve systems of equations by graphing... I get how to graph and solve equations but i just don't understand why its coming out wrong u=v 4u=3v-3

    asked by RomanRamirez
  109. music

    the meaning of the words

    asked by jamie
  110. Chemistry

    Which of the following is an example of a Homogeneous mixture? a. the hydrogen and oxygen atoms that make up water b. A typical soil sample c. a glass of orange juice d. a bottle of table vinegar I believe the answer is d

    asked by Jen
  111. calculus

    Solve the equation for x. e^ax=Ce^bx, where a cannot equal b Can someone explain this pleaseee!

    asked by Sarah
  112. 8th grade

    I am having trouble with these kinds of problems and I ask my teacher but he doesnt explain it good enough. Will you please tell me step by step instructions to solve this type of problem... -2(z + 11)=6 thank you

    asked by Sara
  113. health

    Describe the importance of Blue cross and Blue Shield plans in the evolution of health care coverage.

    asked by bobbi
  114. social studies

    where is the united states federal goverment located

    asked by abby
  115. artist

    Why would some people like having music as their art in school?

    asked by N 'aicha
  116. english

    what's great than god, worse than the devil, the rich need it, the poor have it, and if u eat it u'll die?

    asked by Sarah
  117. math

    what dose the n stand for in the math question 54-n=24

    asked by abby
  118. Math

    What is the area of a square, of the length of any of its sides is 3.5cm? a. 3.5cm2 b. 7cm2 c. 10.5cm2 d. 12.25 cm2 I believe the answer is d 3.5 x 3.5

    asked by Diane
  119. math

    what dose the n stand for inthe math question 54-n=24

    asked by abby
  120. Math

    If you are calculating the capacity of material that will fit inside a box, you need to measure the _____ edges of the box. a. outside b. inside c. top and bottom d. overall I believe it would be B

    asked by Diane
  121. Math

    Complete the following statement in the best way: Before you can solve any formula for area or volume, you must be sure that all your measurements are in the same __________. a. number of digits b. proportion c. decimal value d. Units I believe it is UNITS

    asked by Diane
  122. 7TH MATH

    HOW TO USE THE EQUATION TO COMPLETE THE TABLE. y=4x+3 x 1 2 5 10 20 y . . . . . d=3.5t t 1 2 5 10 20 d . . . . .

    asked by KIKIME
  123. Math

    what formula do you use for calculating the volume of a box? I think it is V=lwh

    asked by Diane
  124. Math

    If a point of a three-dimensional system is labeled with the coordinates (1, 2, -2) what is the Z coordinate? a. 1 b. -1 c. 2 d. -2 This one I am not sure but I think it is d.

    asked by Diane
  125. homework

    Which of the two procurement strategies (RFP) is most effective for a human services agency? Does the procurement system serve the best interest of human services agencies and those they support? Is it The Request for Proposals or Invitation for Bids (IFB)

    asked by shashana
  126. chem

    Explain the fact that acetic acid can be extracted quantitatively from ether solution by dilute aqueous sodium hydroxide solution.

    asked by Omar
  127. Literature

    In chapter 12 of lord of the flies, explain the significance of the last line.

    asked by Abriel
  128. Presidents!

    which president refused 25k salery?

    asked by CNS!
  129. history

    What are some websites that will help me research African Americans in the colonial times?

    asked by brooke
  130. 4th grade

    what is simple subject and simple predicate

    asked by boo
  131. health

    what do the acronyms f-a-t-s and p-l-a-n in regards to the food pyramid stand for?

    asked by denny
  132. biology

    how is the vertabrate skeleton organized, and what does each section include?

    asked by Heather
  133. AlgebraII

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify.

    asked by Nadia
  134. Science

    What is the difference between a stage 2 rocket and a stage 3 rocket?

    asked by Maria
  135. 11th grade

    Rewrite the following sentence using the beginning word.( Had they realized how difficult it was to climb the mountain, they would have lost courage.) Now begin this sentence with (If) Thank you

    asked by Rhondi
  136. alg

    the viewing window is defined by -3 is less than or equal to x is less than or equal to 7 and 10 is less than or equal to y is less than or equal to 30. give the approximate coordinates of a) the x-intercepts, b) the y-intercepts and c) the relative

    asked by jerson
  137. science

    How does an increased level of estrogen in the bolld affect the pituitary gland?

    asked by brook
  138. math

    42=18t+4(t+5) this confuses me am i supposed to find the answer to both of the (Ts)? and how do i solve it

    asked by Sara
  139. social studies

    how did spain establish territorial claims in the caribbean and south america?

    asked by yakelin
  140. home ec

    What should you always use when handling hot utensils?

    asked by Nick
  141. math

    how to find how many degrees in a pentagon

    asked by Nia
  142. college

    I need help studing for my A&P test. I just don't get this stuff. does anyone know a easy way to remember this all?

    asked by Ashley
  143. 3rd grade

    math to endure the heat,firefighters wear protective gear that weighs about 40 pounds.If a suited-up firefighter weighs 220 pounds,how can you use mental math to find the firefighters weight without the gear?

    asked by trinity
  144. Ap Bio

    Lab 12 - Dissolved Oxygen & Aquatic Primary Productivty. Ask to DESIGN an experiment to measure the effect of salinity on the solubility of oxygen in water. What variables would need to control?

    asked by kelly
  145. science

    When the oceans first formed were they salty

    asked by Dominique
  146. math

    Is neg. 0 more or less than neg 4?

    asked by shar
  147. math

    Explain how you would use a number line to round 148 to the nearest 10.

    asked by Deja
  148. math

    Round 5,555 to the nearest hundred.

    asked by Deja
  149. Ap Bio

    SAME LAb - Collect a sample of water below some riffles in stream. Stream runs into a lake. 2nd sample from lake. Which smaple would you expect to have the higher DO? Explain

    asked by kelly
  150. Language

    Rewrite this sentence using WHEN THE FIRE at the beginning. After having at last put out the fire, the villagers helped the victims clear the building of all the rubble. Thank you Ms. Sue

    asked by Rhondi
  151. government

    The practice of drawing electoral district lines in order to limit the voting strength of a particular group or party is know as : A)preclearance B) gerrymandering C) mcCarthyism D)mckinneyism

    asked by Anonymous,
  152. MATH

    10 TREE'S, 5 ROW'S WITH 4 TREE'S IN EACH ROW?

    asked by KELLY
  153. social studies

    which land masses lie mostly within low latitudes

    asked by nathan
  154. government

    organizations that raise money to donate to candidates who agree with the organizations beliefs are called: A)ARMs,B)major parties C)minor parties D)PACs

    asked by Anonymous,
  155. Math

    If the new, larger group of friends sells X shirts, how much profit will each friend receive?

    asked by N 'aicha
  156. Presidents!!!!

    who was the youngest pres?

    asked by CNS!
  157. Language

    Rewrite this sentence using "Following" in the beginning. Johnson's son Michael, followed his father's footsteps many years later and also set a world record. Would this be correct Ms Sue? (Following in his father's footsteps, Michael also set a world

    asked by Rhondi
  158. Math

    Ireally didn't get it

    asked by N 'aicha
  159. Environmental Sudies

    How was the composition of plastics and paper products changed in the last 30 years? State possible reasons for such changes.

    asked by Thano
  160. Sally

    I have a factoring question; what is 8a^2-8a-30? I've been working on this for a while and I think I understand factoring, but I'm not getting the right answer, which is supposed to be 2(2a-5)(2a+3). Any help would be so appreciated! :)

    asked by Math
  161. HELP!

    which president annexed Oregon and California?

    asked by CNS!
  162. eek! presidents!

    which pres was tone deaf?

    asked by Anonymous
  163. geography

    What US state can be compared in size to the island of Hispanoila

    asked by Kyle
  164. math

    explain how you would use a number line to round 148 to the nearest 10

    asked by Deja
  165. Language

    Rewrite this sentence using "I suggest" to start. In my opinion, you are not giving all the facts of the incident. Would this be correct? I suggest that you are not giving all the facts of the incident.

    asked by Rhondi
  166. Presidents!

    Which president could speak 7 languages?

    asked by Anonymous
  167. Art

    I need a 3d picture of a mansion or a villa for my two point perspective can you tell me a good website PLease

    asked by Holly
  168. Earth Science

    My child is doing a project on the earth. He is trying to do a power point presentation on the earth. He ran across information that stated, "The earth is divided into several layers which have distinct chemicals and seismic properties". He would like to

    asked by Roderick
  169. Social Studies

    Why are climates near the poles different from climates near the equator?

    asked by DeeDee
  170. sci.

    I`m so confused about osmosis right now. If you place a cell in a hypertonic solute then wouldn`t the water go into the cell since they`re trying to acheive equilibrium?

    asked by Lena
  171. accounting

    Ignoring income taxes compute the amount of loss, if any, to be recognized by Banno as a result of retiring the $900,000 of bonds in 2007 and prepare the journal entry to record the retirement. On January 2, 2002, Banno Corporation issued $1,500,000 of 10%

    asked by laxer22
  172. Social Study

    How do you write a editorial on clean air.

    asked by Little K
  173. science

    speculate about how pollution of the ecotone might affect the surrounding ecozones.

    asked by katherine
  174. Social Studies

    Explain in what way ideological beliefs and modern concerns for human rights and justice are challenging the traditional beliefs and practices of the communist state in China.

    asked by Ashley
  175. Chemistry

    When I invert the concentration of say this equation: 2HCr4- + 3HS03- + 5H+ -> 2Cr3+ + 3SO4^2- + 5H20. and get RSRRE wrt HS03-, the rates of reactants is positive and the rates of products is negative. If say it is wrt HS03- which gives it a coefficient of

    asked by Tri
  176. Social Studies

    Are hurricanes an example of climates or weather?

    asked by DeeDee
  177. Social Studies

    What kind of climate occurs in most places near the equator

    asked by DeeDee
  178. grammar

    Is the date "1901" a proper know?

    asked by Jenna
  179. math

    If you have ten numbers and the alphabet on a key board what is the probibilty that a number will be picked first a letter second and a number third

    asked by John
  180. math

    the problem is 12 _ 2 _ 4 _ 3 =6 we have to use +, -, x, /, parentheses and use the exponents 2 or 3 once to make this true Help

    asked by Lynn
  181. biology

    could you give some information about birth control conceptive thank you

    asked by andreana
  182. English

    What are adjectives in the following sentences. 1. The little electic car chugged over the steep hill and into the valley. 2. A bitter wind was blowing off the ocean the night that Keith heard the entire howling. 3. The unpublished story revealed a new

    asked by Angela
  183. Algebra review

    When putting ratios on a # line, how does someone know what numbers to put the fraction inbetween? example: -17/5

    asked by Sarah
  184. physics

    A simple Geiger counter is constructed out of a setup similar to what we just used in problem 5. A thin wire with a linear charge density _ is held in the center of a cylindrical tube, which is filled with an inert gas. When a high speed 2 particle coming

    asked by al
  185. science

    CHOOSE ANY DISNEY MOVIE TO MAKE THIS DIORAMA. MAKE A 3D MODEL OF PLAINS, PLATEAU AND MOUNTAINS AND WRITE 5 PARAGRAPHS ABOUT THESE THREE LANDFORMS. PLEASE HELP ME. THANK YOU.

    asked by JACK
  186. eletronic

    I want to know ten safety devices for electricity

    asked by Shaquille Clarke
  187. health care in the US

    What is the impact of medical professional shortages on healthcare delivery?

    asked by jean
  188. science

    Describe the biological interrelationships among the life forms in inda

    asked by kevin
  189. language arts

    list the two ways in which an author may introduce a story's setting?

    asked by keegan
  190. science

    What i the normal anatomy of sickle cell anemia?

    asked by Jess
  191. IT 220

    what security risks are associated with using a wireless network?

    asked by sam
  192. college

    what is another name for herpetologist? is it zoologists? thanks.

    asked by Diana
  193. Chemistry help please

    Can someone give me a little help. I'm stuck. Unit conversions, there are 4 quarts in 1 gallon there are 1.05 quarts in 1 liter there are 73 gallons in 2 barrels My question is, convert 12 liters to barrels?

    asked by Sue
  194. math

    how would you do 10 to the power of 3 X 500?

    asked by caitlin
  195. english

    what goes up but never comes down?

    asked by caitlin
  196. science

    what does the formula CHO stand for?

    asked by Marlena
  197. science

    What is birth control pills and its effects.

    asked by andreana
  198. social studies

    what is a word that means the same as nation goverment

    asked by abby
  199. Presidents!

    which president had a son names Bennie that died young, didn't swear on the bible at inauguration, is ranked among the least effective presidents ever and ran over a woman with his horse?

    asked by Anonymous
  200. social studies

    what are the indivdual right of a citzen under law called

    asked by abby
  201. math

    hello? could someone help me? 10 to the power of 3 X 500?

    asked by caitlin
  202. Biology

    For my Biology Lab I have to create a graph showing my results. We used an enzyme, and put in a substrate (H2O2). Every 10, 30, 60, 90, 120, 180, and 360 second H2O2 was killed with acid. To measure the amount of H2O2 we used KMnO4. Now to the question. I

    asked by John
  203. math

    I really need help with this problem!!! Solve for the unknown: 8/52=m/39 Help Please!!!!

    asked by PJ
  204. Math

    You want to install kitchen florr tiles that each measure 12 inches by 12 inches (1sq ft) Your kitchen measures 12 feet by 14 feet, but there is a 2 foot by 4 foot area around the sink that will NOT be tiled. How many tiles do you need? a. 142 b. 150 c.

    asked by Diane
  205. Math

    How would you say that biologists are not scientists to one of your classmates ?

    asked by N 'aicha
  206. Presidents!

    This president said "read my lips, no new taxes," then raised taxes pres during pursian gulf war was ambassador to IN CIA director negotiated weapons reduction treaty. who is he?

    asked by Anonymous
  207. Language Arts

    Can you think of 100 synynoms for the word said (or say)?

    asked by Emily
  208. history

    how had big buisnesses changed the face of the american buisness by 1990?

    asked by christina
  209. chem

    I want to know why indium and oxygen form In2O3, where does the 3 come from ?

    asked by natash
  210. grade 8

    what is the total amount of people a high school is allowed to have?

    asked by Sarah
  211. Math

    Which of the following is the Correct approximate value of "pi"(p)? a. 0.314 b. 1.14 c. 3.14 d. 3.33 I pick C

    asked by Diane
  212. Presidents!

    wouldn't ride in a 2nd hand carriage elected as a Whig passed bar exam with no formal education 1st tub and stove installed in the white house?

    asked by Anonymous
  213. college

    Hi, I have just return back to school. I am thirty one years old. my teacher gave me a list a words she would like me to make complete sentences. Also, she would like them to be interesting. the words are: its, it's, their, there, they're, conscious,

    asked by Sherice
  214. Math

    Calculate the area of a poster that measures 40 inches by 14 inches? it equals 560 sq ft correct?

    asked by Diane
  215. math

    plz explain how to figure out decimals and round off numbers. what is the formula?

    asked by avie
  216. 4th grade/math

    round off and decimal formula. round off nearest hundred, whole numbers.etc.. thank ;you

    asked by avie
  217. algebra

    properties with real numbers

    asked by suz
  218. Math

    Calculate the area of a poster that measures 40 inches by 14 inches? SHOULD BE SQ INCHES it equals 560 sq inches

    asked by Diane
  219. Presidents!

    His wifes name was lemonade lucy??

    asked by Anonymous
  220. math

    what is the formula for the circumfrence of a circle? C=

    asked by Diane
  221. HELP!!!

    the people of the Us nicknamed him "Van Ruin". i googled it and it came back Van buren and harrison??

    asked by Anonymous
  222. Math

    How do you write h to the second power minus three divided by four in numbers ?

    asked by N 'aicha
  223. Presidents!!!!

    1st president born in USA?

    asked by CNS!
  224. Pre-Algebra 7th

    What does 20 divided by 4 minus 5 plus 12 equal? I'm trying to understand the order of operation. I think the answer might be -12. Is this correct?

    asked by Laura