Questions Asked on
July 15, 2013

  1. pcc

    A volume of 40.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 21.7mL of 1.50 M H2SO4 was needed? The equation is

    asked by jose
  2. Physics

    The femur of a human leg (mass 10 kg, length 0.9 m) is in traction, as shown in the figure below. The center of gravity of the leg is one-third of the distance from the pelvis to the bottom of the foot. Two objects, with masses m1 and m2, are hung using

    asked by Jason
  3. American Literature

    What do the pieces you read by Richard Rodriguez, Amy Tan, and Julia Alvarez illustrate about the immigrant experience in twentieth-century America? How are the children in these works different from their parents? Works read are: Complexion - Rodriguez;

    asked by Khloe
  4. finance

    Tangshan Mining is considering issuing long-term debt. The debt would have a 30 year maturity and a 12 percent coupon rate and make semiannual coupon payments. In order to sell the issue, the bonds must be underpriced at a discount of 2.5 percent of face

    asked by Michelle
  5. maths

    the distance between two stations is 340 km two trains start simultaneously on parallel tracks to each other . the speed of one of them is greater than that of the other by 5 km/hr. if the distance between the two trains after 2 hrs of their start is 30 km

    asked by krishna
  6. college trig

    find the radius of a pulley if rotating the pulley 108.03 degrees raises the pulley 37.3mm

    asked by brandi
  7. MATH

    Given that logbase2 a+logbase2 b=3 , calculate all the possible integer values of a if b is also an integer value. Explain your reasoning.

    asked by heather
  8. Economics

    The well known nationally syndicated columnist David Broder reported the recent findings of two academic political scientists. These scholars found that voters are quite turned off by negative campaigns of politicians. Many people went as far as not voting

    asked by Eric
  9. Calculus

    Evaluate the integral below by interpreting it in terms of areas. In other words, draw a picture of the region the integral represents, and find the area using geometry. ç6 −6 36−x^2dx

    asked by Robin
  10. Economics

    Thomas Schelling, an expert on nuclear strategy and arms control, observed in his book The Strategy of Conflict (Cambridge, MA: Harvard University Press, 1960), "The power to constrain an adversary depends upon the power to bind oneself." Explain this

    asked by Eric
  11. chemistry

    Calculate the pH at the equivalence point for the titration of 0.25 M CH3COOH with 0.25 -5 M NaOH. (For CH3COOH, Ka= 1.8 â‹… 10 )

    asked by ginger
  12. chemistry

    If a hot air balloon has an initial volume of 1000 L at 70∘C, what is the temperature (in ∘C) of the air inside the balloon if the volume expands to 1900L ?

    asked by Anonymous
  13. statistics

    A hypothetical HIV vaccine trial involving 20,000 participants—10,000 in the vaccine group and 10,000 in the placebo group—had the following results: 6.3 infections per 1000 in the vaccine group and 9.0 infections per 1000 in the placebo group. I ran a

    asked by Anonymous
  14. Statistics

    The effect size in this hypothetical trial (2.7 fewer infections per 1000 vaccinated) is slightly smaller than the effect size found in the real 2009 HIV vaccine trial (2.8 fewer infections per 1000 vaccinated); so why is the p-value smaller? The

    asked by Rupal
  15. physics

    how long does a car with and acceleration of 2.0m/s2 take to go 10m/s to 30 m/s.

    asked by weeeeeeeeeeee
  16. math

    Two radar stations at A and B, with B 6 km east of A, are tracking a ship which is generally to the north. At a certain instant, the ship is 5 km from A and this distance is increasing at the rate of 28 km/h. At the same instant, the ship is also 5 km from

    asked by JEN
  17. chemistry

    How many grams of NaOH would be needed to react with 199 g of HCl? NaOH + HCl --> NaCl + H2O

    asked by ren
  18. chem

    What mass of KCl in grams is formed when 2.00 lbs of KC103 is decomposed? KClO3 --> KCl + O2

    asked by ren
  19. chem

    Calculate the mass in grams of carbon needed to produce 160 g of CO2 in burning: C + O2 --> CO2

    asked by paula
  20. Calculus

    Find the point on the line 7x+5y−2=0 which is closest to the point (−6,−2).

    asked by Robin
  21. economics

    are there any current subsidy or welfare issues that are being discussed or addressed in parliament or in municipalities

    asked by linda
  22. Calculus

    For the function f described by the following table, estimate ç40 0 f(x)dx using the following. Enter each answer as a sum to show your work. 5 left rectangles 5 right rectangles 5 midpoint rectangles x 0 4 8 12 16 20 24 28 32 36 40 y 7 -46 -50 45 -7

    asked by Robin
  23. Geography

    I don't get any of it! Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain (see page 79 in the Laboratory Manual). The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of

    asked by CNM
  24. chem

    Once made by heating wood in the absence of air, methanol (CH3OH) is now made by reacting carbon monoxide and hydrogen at high pressure: CO(g)+2H2(g)→CH3OH(l) How many grams of CH3OH can be made from 40.0g of CO if it all reacts?

    asked by Devi
  25. algebra

    A bank teller has 35 bills in $5, $10, and $20 denominations. The total value from these bills is $370.The total number of $10 bills and $20 bills is 7more than the number of $5. How many bills of each denomination?

    asked by Anonymous
  26. Economics

    When McDonald’s Corp. reduced the price of its Big Mac by 75 percent if customers also purchased french fries and a soft drink, The Wall Street Journal reported that the company was hoping the novel promotion would revive its U. S. sales growth. It

    asked by Eric
  27. algebra

    Solve the system using elimination X+3y=5 4x+4y=4 I tried to work this problem and this is what I came up with. x+3y=5 x+4y=20 7y=15 y=7/15 and x= (5+y)/4 (5+7/15)/2 2/15 x=2/15 x=2/15, y=7/15 I would like for someone to check to see if it is correct.

    asked by angela
  28. Math

    alex estimates that if he lies in the sun for k hours it will take him (10+10k) to get to sleep at night because of the sunburn . If Alex wants to get as much sun as possible without taking more than half an hour to get to sleep, how many HOUR CAN he lie

    asked by .
  29. math

    according to ohm's law the current I is equal to the voltage V divided by the resistence R

    asked by Anonymous
  30. velocity

    what does velocity mean in physics?

    asked by physics
  31. algebra

    A non toxic floor wax can be made from lemon juice and food grade linseed oil. the amount of oil should be twice the amount of lemon juice. how much of each ingredient is needed to make 36 ounces of floor wax. let x represent the number of ounces of lemon

    asked by angela
  32. Calculus

    Consider the function f(x)=(8)/(x^2)−(8)/(x^5) . Let F(x) be the antiderivative of f(x) with F(1)=0. Then F(2) equals ?

    asked by Robin
  33. algebra

    2 12(p+1) +13(p+1)+3 could this be done in quadratic form? the the (p+1) after 12 is cubed.

    asked by Anonymous
  34. English

    1. Last year, we had a school festival in fall. I couldn't join the school festival because I was sick and absent from school. 2. Last year, we had a sports day. I couldn't join the sports day because I had to go abroad with my parents. (Would you check

    asked by rfvv
  35. Algebra

    Determine whether the equation defines y as a function of x. y=-17

    asked by tony
  36. MATH

    Consider the expression logbase5 a=n a) For what value(s) of a will n be a positive number? b) For what value(s) of a will n be a negative number? c) For what value(s) of a will n be undefined?

    asked by ROBIN
  37. English

    1. Sightseeing is best done either by tour bus or by bicycle. 2. Sightseeing is best done either by tour buses or by bicycles. 3. Sightseeing is best done either by a tour bus or by a bicycle. 4. Sightseeing is best done either by the tour bus or by the

    asked by rfvv
  38. alg2 check?

    solve for n:6(5n-1)=2(15n-3) I got 30n-6=30n-6 but I think I was suppose to keep going but don't know how. Do I divide or multiply

    asked by tyneisha
  39. Math

    3,4,9,12,16,18 two integers are related if they share a factor other than 1. which of the following numbers is related to every number in the list above. A 10 B 9 C 6 D 4 E 3 Is it 10? Since like 30,40,90,120,180 all have factor of 10?

    asked by .
  40. Math

    if the sum of the positive integers x and y is 12 then x can be equal to all of the following except 5y 4y 3y 2y y

    asked by .
  41. English

    Where did you go? I went to Gwangalli Beach. When did you go? I went there about two weeks ago. How did you get there? I took a bus to get there. What did you do there? I changed clothes and ran into the water to swim. I took a banana boat with my friends.

    asked by rfvv
  42. MATH

    Consider the expression logbase5 a=n a) For what value(s) of a will n be a positive number? b) For what value(s) of a will n be a negative number? c) For what value(s) of a will n be undefined?

    asked by ROBIN
  43. geometry

    Determine the value of x for which a || b if m

    asked by knowel
  44. MacroEconomics

    1. The money supply is $1 trillion,the price level =2,and real GDP is $5 trillion in base year dollars. What is the income velocity of money ?

    asked by Steve
  45. math

    After selling 160 copies of the program to a school play, an usher had fewer than 40 copies left. how many copies of the program did the usher have originally?

    asked by vinci
  46. algebra

    A store sold 29 sweatshirts. White ones cost $ 9.95 and yellow ones cost $ 11.50 If $ 305.05 worth of sweatshirts were sold, how many of each were sold. Let x=the number of white sweatshirts Let y= the number of yellow sweat shirts Complete the system of

    asked by angela
  47. Economics

    Some states have had laws restricting the sale of most goods on Sunday. Consumers, by and large, oppose such laws because they find Sunday afternoon a convenient time to shop. Paradoxically, retail trade associations frequently support the laws. Discuss

    asked by Eric
  48. Math

    In triangle ABC, D is the midpoint of BC. E is the foot of the perpendicular from C to AD. If CD=7√,DE=3√, what is the measure (in degrees) of ∠BED?

    asked by Mark
  49. chemistry

    If a 8.6195 g of a mixture which contains (20.0 % of CuSO4.XH2O and 80.0 % of sand) was heated in a crucible then cooled in the desiccator the mass obtained was 7.9976 g. a- Find X the number of water of hydration in the Hydrate (CuSO4.XH2O) (MM of CuSO4 =

    asked by Janaiby
  50. science

    give an example of how the cells structure relates to its function in the body.My answer is the structure of the cells determine its function. Am i correct. Thanks

    asked by Americal
  51. chemistry

    How many moles of H2O are needed to react with 15.0g of CaO forming Ca (OH)2? CaO + H2O --> Ca (OH)2

    asked by alan
  52. english

    i need to write an essay on 'the day your neighbour asked you to look after her young baby while she went to market.' please give me some ideas.....

    asked by leena
  53. math

    A house and a lot together cost more than $86,000. The house costs $2000 more than six times the costs of the lot. How much does the lot cost by itself?

    asked by vinci
  54. chemistry

    i find it confusing on how to do this question.. what mass of solute is needed to prepare 400 mL of 0.850 M CuSO4 from CuSO4.5H2O

    asked by anonymous
  55. chemistry

    When 30.0g of aluminum reacts with HCl, how many grams of aluminum chloride are formed? Al + HCl --> AlCl3 + H2

    asked by paula
  56. math

    Andrew's salary is $1200 a month plus 4% commission on all his sales. What must the amount of his sales be to earn at least $1600 each month?

    asked by vinci
  57. Statistics

    The Centers for Disease Control (CDC) collects yearly statistics on drinking behavior in the United States by surveying a random sample of U.S. adults. The following data display the percent of adults aged 18 years and over who had 5 or more drinks in 1

    asked by Rupal
  58. economics

    what are the costs and consequences of providing the subsidies and welfare

    asked by linda
  59. Physics

    You bounce on a huge trampoline and start oscillating up and down with a period of 3 s. After a long while, you come to rest but the trampoline below you is displaced below its natural height. How much is the trampoline bent in m? Model the trampoline as a

    asked by Mark
  60. english

    need to write a short essay on 'describe a trip you took with your family or friends. It could be to another state, another town, or to a store. You should talk about what happened, why, and when.'

    asked by leena
  61. English

    1. I videotaped the scenery. 2. I made a video with the scenery. 3. I made videos regarding the scenery. 4. I made the video about the scenery. (Which expressions are grammatical? Thank you for your help.)

    asked by rfvv
  62. Vocabulary

    The ____ definition of glommy is dismal or depressing A. connotative B. denotative A

    asked by Lady T
  63. Math

    Let ABCDEF be an equiangular hexagon with perimeter 98 such that EF=2CD=4AB and BC=2FA. What is the length of EF?

    asked by Mark
  64. physics

    how much work is needed to stop a 20g bullet moving with a speed of 150 ms-1

    asked by Anonymous
  65. MATH

    Explain the difference between cos^-1x and (cos x)^-1

    asked by ROBIN
  66. Economics

    How is risk and uncertainty related in economics?

    asked by Tameika
  67. Math

    How many {(1,1),(1,−1),(2,0)}-lattice paths are there from the point (0,0) to the line x=8? Details and assumptions A lattice path is a path in the Cartesian plane between points with integer coordinates. A step in a lattice path is a single move from

    asked by Mark
  68. social studies

    Can someone tell me if this is correct my answer has ( ) around it The Articles of Confederation called for which of the following? A. The Northwest Ordinance B. A chief executive (C). A single legislative body D. The right of the legislature to assess

    asked by carolyn
  69. english

    1-have you ever searched for information on the internet?Describe the process you used. 2-Is information from the internet as good as information from a library?explain>

    asked by maria
  70. Algebra

    Is the cube root of -1/1000 q^36 -1/10q^12? Am I right?

    asked by Kim
  71. science

    a ballon is filled with hydrogen at given pressure at 20 degree celsius .what fraction of gas will escape out of the ballon if temperature rises to 40 degree celsius at constant pressue.

    asked by anubhav
  72. englis novel

    in gulliver travels how swift laughs at the weakness of people in the contemporary society

    asked by esheta
  73. Physics

    You have a piece of copper with a volume of 2 cm3, and wish to form a wire having a resistance of 0.15 ƒ¶. How long should the wire be if the resistivity of copper is 1.72 ~ 10-8 ƒ¶. m?

    asked by tom
  74. Statistics

    A batch consists of 20 bad apples and 80 good ones. What is the probability of selecting 2 good apples when two are randomly selected if the first selection is replaced before the second is made?

    asked by Carrie
  75. chemistry

    A thermometer scale is calibrated (marked off) in a degree Celsius from 1 oC to 50 oC. Determine how many significant figures should be used to express the outdoor temperature if the temperature is more than 1 oC and less than 10 oC: (A) 1 (B) 2 (C) 3 (D)

    asked by Janaiby
  76. MATH

    Given that x=logbase3 5 and y=logbase3 2 , rewrite logbase3 60 in terms of x and y.

    asked by heather
  77. comp/155

    I am having problems writing a essay and not really sure how to start.

    asked by cheri
  78. Math

    When a ball is thrown in the air at 15mps from a height of 1 ft, how long does it take for the ball to hit the ground?

    asked by Emily
  79. MATH

    Determine an equation of a sinusoidal function that has a maximum at (5, 4) and a minimum at (2, -10).

    asked by ROBIN
  80. CURRENT PROCD TERMN CODING

    wHAT IS THE CODING SYSTEM PHYSICIANS USE TO FILE THEIR CLAIMS

    asked by SHANA
  81. math

    Define a variable and write an inequality for each of the following. A. When 3 times a number is decreased by 8, the result is at least 2 times the number. B. Ignatz, the Airedale, and Angus, the Scottie, collect bones. Ignatz has 5 more than Angus. They

    asked by rita
  82. French

    What is the difference between "J'ai faim" and "Je suis faim?" By looking at different sources, I found out that most people say "J'ai faim," although I wanted to know if there was anything wrong with using the latter.

    asked by Anonymous
  83. physics

    Can a plane mirror ever form real image?

    asked by Ritesh chaudhari
  84. Math (algebra)

    Let x and y be real numbers satisfying 4x^2+5y^2=1. Over all such pairs, let the maximum and minimum values of 2x^2+3xy+2y^2 be M and N respectively. If M+N+MN=a/b, where a and b are coprime positive integers, what is the value of a+b?

    asked by Mark
  85. alg 2 check?

    1.)solve for n:-7n-21=-63 my answer: n=3 is this correct? please explain 2.)identify the x and y int for te equation 3x-4y=12.

    asked by tyneisha
  86. Math

    Brilli the ant has a block of cheese that is in the shape of an equilateral triangle. She is hosting a party, and has invited her two-legged house mates. She insists that all of her guests get a piece of cheese that is in the shape of an isosceles

    asked by Mark
  87. american history

    Under the _______ system, Spanish conquistadors were rewarded with local villages and control over the local labor force

    asked by william
  88. MATH

    solve for theda given 0

    asked by ROBIN
  89. Math-Algebra

    ^4√(d-3e)^2 (fourth root of (d-3e)^2)

    asked by Penny
  90. MATH

    Given that x=logbase3 5 and y=logbase3 2 , rewrite logbase3 60 in terms of x and y.

    asked by ROBIN
  91. MATH

    For what value(s) of x does logbase2 (logbase3 (logbase4 x))=0

    asked by ROBIN
  92. simple math

    simplify (2x+y)^2 x=2 right? help please

    asked by alley
  93. Math

    when a number is multplied by itself the result is equal to 7 times twice the number. What is one possible value of the number So n^2= 7 x 2n? Then can't 0 be one?

    asked by .
  94. Math

    Are these true or false? 1. If s is negative, then the square root of s^2 is -s. 2. If r is positive, then the square root of r^2 is -r. 3. If q is negative, then the square root of q^2 is q. 4. If p is positive, then the square root of P^2 = p. If

    asked by Paula
  95. IT/205

    Read “The U.S. Census Bureau Field Data Collection Project: Don’t Count On It” beginning on p. 413 of Essentials of Management Information Systems. Answer the following questions in 200 to 300 words: Dose this mean each question 200 to 300 word or

    asked by beckylynn
  96. HIS204

    can anyone help on this first quiz?

    asked by HELPFUL
  97. Math - Algebra

    What is the tenth root of 16u^2v^4wx^5? Note that the exponent of v is 4w.

    asked by Penny
  98. math

    3/4-1/2n=4/5 Please don't give me the answer, just show me the steps to solve it

    asked by Jamie
  99. economie

    are there any welfare or subsidy payments that šhould be reviewed or added

    asked by linda
  100. alg 2 check?

    (4x+y)^2 answer:16x^2+y^2 is this correct?

    asked by tyneisha
  101. alg 2 check?

    The polynomial 15xy+3x^3y^4 is what degree? I do not understand how to solve this

    asked by tyneisha
  102. Elementary mechanics

    Given that the mass and radius of jupiter are respectively 190000000kg 7150000km.Calculate the escape velocity from the surface of the planet(a)11.2 km/s(b)33.3km/s(c)59.5km/s(d)110.4km/s

    asked by jane
  103. Math

    How do I find the Prime Factorization for the number 2002?

    asked by Sumare
  104. math

    The length of a rectangle is 7 cm longer than the width. The perimeter is no less than 38 cm. Find the smallest possible dimensions of the rectangle.

    asked by vinci
  105. math

    The sum of two numbers is not more than 56. One number is six times the other. Find the greatest possible values for the numbers.

    asked by vinci
  106. psy

    suppose you wanted to do research on how best to gradually charge the behavior of a fearful child. Which of the following theorist are you likely to come across in your resarch

    asked by Sarah
  107. math

    -6=4x/7+2

    asked by Jamie
  108. Elementary mechanics

    what is common to the variation in the range and the hieght of a projectile. I'm thinking of horizontal acceleration pls what do u think

    asked by jane
  109. Math

    In a circle gray showing world population of aluminum, what is the measure of the central angle of the sector representing a country that produces 4/15 of the total world production of aluminum? A 26 B 60 C 85 D 92 E 96

    asked by .