Questions Asked on
April 17, 2010

  1. chemistry

    Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of sulfuric acid. S(s) + O2(g) -> SO2(g) 2SO2(g) + O2(g) -> 2SO3(g) What volume of O2 (g) at 350 degrees Celsius and a pressure of 5.25 atm is needed to completely

    asked by James
  2. College Physics

    A 6.76 kg block is attached to a spring with spring constant 36.9 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 57 cm/s. What are The amplitude of the subsequent oscillations?

    asked by Anonymous
  3. Physics

    The small archerfish (length 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This aptly named creature captures its prey by shooting a stream of water drops at an insect, either flying or at rest. The bug falls into

    asked by Raj
  4. geometry

    An isosceles triangle has two 10.0-inch sides and a 2w-inch side. Find the radius of the inscribed circle of this triangle, in the cases w = 5.00, w = 6.00, and w = 8.00. Then Write an expression for the inscribed radius r in terms of the variable w , then

    asked by sarah
  5. Programming JAVA

    1. What is 9.9 + (11 % 8)? 2. Write one line that creates a variable named Pickles that can hold an integer and assign it the value of ten.

    asked by Johny
  6. progamming JAVA

    1.Write an algorithm, in English, to solve the following problem. Be sure to include pre- and post-conditions! 2.Problem: Solve X mod Y for all positive integers. Do so without using multiplication or division. 3.What is (7 / 3) + (4 % 5)?

    asked by Johny
  7. physics

    find the thermal stress in a 18 ft long steel beam that embedded in concrete. If the temperature rises by 40 degrees and the beam move a distance of .04 inches on each side. E=30*10^6 psi

    asked by stacey graham
  8. Chemistry

    What is the molarity of a nitric acid solution prepared by diluting 250.0 mL of 6.00 M HNO3 to a total volume of 2.50 L?

    asked by Anonymous
  9. Chemistry

    Calculate the heat released when 10.0 g of water at 25.0°C cools to ice at 0.0°C. The specific heat of water is 1.00 cal/(g × °C); the heat of fusion is 80.0 cal/g; and the heat of vaporization is 540.0 cal/g.

    asked by helpanderson
  10. plzzz help me with this questionnn

    which word is a synonym of the word evolve? a.recession b.decline c.progress d.retrogression plzzzz some1 give me the answer:((

    asked by becca
  11. MAth

    500 candidates appeared for a certain test. The mean scores was 59 and variance was 25. Assuming the distribution to be normal. find 1.% of candidates scoring 64 and above. 2. No. of candidates having score between 54 and 69. ( Given : For a s.n.v.z, the

    asked by Hemant
  12. drwis

    -Which greek base means narrow? 1. sten- 2. platy- 3. mer- 4. xanth

    asked by becca
  13. math

    If you wanted to code 94 distinct characters, such as those found on a coputer keyboard, how many dots would the system need?

    asked by Lucy
  14. chemistry

    How much ml of H2So4 added to make 0.02M H2So4 solution to make volume 250ml?

    asked by unknown
  15. Calculus

    Use the given vector to find a vector b such that compab = 4. a = ‹4, 0, 1› ‹s, t, >

    asked by abby
  16. Electronics

    A series circuit consists of a 12V source, a 470ohm resistor(R1), a 330ohm resistor(R2) and a diode. If the diode is reverse biased, what is the value of V(R1) and V(R2)?

    asked by Claire
  17. 9th grade

    (a-8)(a-9)

    asked by Felicia
  18. 9th grade

    (2x-1)(x+2)

    asked by Felicia
  19. 9th grade

    (2y+5)(y-3)

    asked by Amy
  20. 9th grade

    (p-7)(p+8)

    asked by Maria
  21. 10th grade

    (-7+p)(8+p)

    asked by Josue
  22. 9th grade

    (p^2-7)(p+8)

    asked by Elizabeth
  23. 9th grade

    (5c-9)(5c+1)

    asked by Stephanie
  24. college chemistry

    . One possible use for the cooking fat left over after making french fries is to burn it as fuel. Formula (for cooking fat) = C51H88O6 Density = 0.94 g/ml ΔH°f = - 1310 kJ/mol. Write a balanced equation of the combustion of cooking fat (the products are

    asked by George
  25. college-Financial Services(MBA)

    The Hypothetical Finance Ltd has structured a hire-purchase deal. The required to make a down payment of 20 per cent of the investment cost. The hire-term is four years with quarterly payment in advance. The flat rate of interest is 13 per cent. The

    asked by Anonymous
  26. math

    (n^2+3)(n+11)

    asked by Anonymous
  27. Math

    (3k^2+2)(k+5k^2)

    asked by Anonymous
  28. Algebra

    (6h-1)(4h^2+h+3)

    asked by Anonymous
  29. Math

    (9y^2+2)(y^2-y-1)

    asked by Anonymous
  30. please help me!

    (8q-4)(6q^2+q+1)

    asked by Anonymous
  31. chemistry

    a fire extignuisher produces carbon dioxide by the reaction between sodium hydrocarbonate and sulfuric acid. if a fire extinguisher is desgined to hold 600.0g of sodium hydrocarbonate calculate : the mass of sulfuric acid required to react with sodium

    asked by sarah
  32. chemistry

    if 1.00M solution of NaOH was diluted enough would it eventually become acidic? showing calculations

    asked by sarah
  33. Sociology (Topic;education)

    hi.. am dnt a topic in sociology and the topic is Education.I find this topic quite complicated and difficult, there are so many types of system of education.. what is the Compensatory education,,can 1 also have some examples of this types of education so

    asked by Taskeen
  34. English

    Thank you very much for your corrections. I have some sentences I'd like you to check. Just say "yes" if they are correct. 1a) The first reform Bill passed in 1832 It is common practice to consider 1832 as the year in which the Victorian age started

    asked by Franco
  35. meaning of Quotes

    Some body please tell me the meaning of "early to bed, early to rise...helps a girl to go with other guys"

    asked by ravi
  36. engineering

    1)A compressed high resolution chest xray image requires about 8MB of data. most GP surgeries are connected to the NHS network at a speed of 2Mbps. how long would it take to download a set of 6 images. give your answer to second to 2 decimal places. 2)as a

    asked by rai
  37. science

    Q. 2. Describe a rocket propelled in 30 degrees north of east with a velocity of 5m/s?

    asked by nancy
  38. Accounting

    Hanson Corp uses a process costing system. Materials are added at the start of the process. Beginning inventory for January consisted of 1,900 units (40% complete for conversion) with a cost of $15,000. 10,900 units were started and completed during

    asked by Bill
  39. Health Administration

    Hospital costs have grown following the growth of private and public insurance. Describe other factors that could account for some of the growth.

    asked by Sara
  40. physics

    A particle of mass m is released from rest at the top of a spherical dome of radius R. how far below the starting point will the particle leave the surface of the dome? how i should solve this?

    asked by Anonymous
  41. business

    What type(s) of information does the finance department need?

    asked by Anonymous
  42. Calculus

    If f(x) = (e^(x))sin(x) what is the 1000th derivative? Step are needed and the general rule/pattern

    asked by Fred
  43. Physics

    If a 5.40g bullet is fired horizontally into a suspended(hanging)10kg block of wood and causes the block, with bullet embedded, to move off with horizontal velocity of 0.30m/s, What is the impact velocity of the bullet?

    asked by Anonymous
  44. Health Administration

    According to the medical arms race hypothesis hospitals compete on the basis of: a. costs. b. costs and price. c. quality. d. (b) and (c) are correct.

    asked by Ryan
  45. Chemistry

    A 30.00ml sample of 0.1234 M hypobromous acid (HBrO) is titrated with a 0.2555 M KOH solution. The Ka for HBrO is 2.5*10^-9 Calculate the pH of the titration mixture at the equivalence point.

    asked by Anonymous
  46. college algebra

    3r-8s=10 8r+3s=51

    asked by pam
  47. Chemistry

    Ethanol is a fuel that can be made from corn. How many kJ of heat energy are released when 3.00 kg of ethanol are burned? C2H5OH(l) + 3O2(g) ¨ 2CO2(g) + 3H2O(g) H = -1406.8 kJ/mol

    asked by Marcus
  48. 9th grade

    where do i put commas? where were you at 10 am on feburary 14 1992

    asked by mar
  49. statistics

    Comparing Variations: 1. For the following exercise, complete the following: a. Find the mean, median, and range for each of the two data sets. b. Find the standard deviation using the rule of thumb for each of the data sets. c. Compare the two sets and

    asked by shanett
  50. science

    what is the flow of matter and energy??

    asked by suzzy
  51. Math

    Can someone please help with this problem? Solve by the elimination method. 7r-9s= -58 9r+7s=74 I know that I need to multiply the first equation by 9 and the second equation by 7. The equations look like this: 63r-81s= -522 63r+49s=518 After this I get

    asked by B.B.
  52. business enterprise

    discuss what will happen to the supply, demand. and price of the soft drink in the short-term

    asked by mahdi
  53. Geometry

    Infinitely many different sectors can be cut from a circular piece of paper with a 12-cm radius, and any such sector can be fashioned into a paper cone with a 12-cm slant height. (a) Show that the volume of the cone produced by the 180-degree sector is

    asked by Sarah
  54. math

    you want to find hot the length of a pendulum affects the time the pendulum takes to sing back forth. explain how you would model the situation

    asked by Katherine
  55. math

    an alphabet book will have one letter on each page. eight pages will be printed on a single piece of paper.you fold the paper in half.then you fold it in half again and trim the edges. the eight pages appear in order. draw the layout for two sides of the

    asked by Katherine
  56. Geometry/math

    The table at right shows measurements made on a circle with a one-meter radius. Each entry in the s-column is an arc length,and the adjacent entry in the c-column is the corresponding chord length, both in meters. Explain why c < s, and determine the range

    asked by Sarah
  57. sociology

    You have been asked to address the importance of social institutions as they relate to the study of sociology. In 2–3 pages, address the following: How do studying social institutions help sociologists understand society? Provide 2 examples of prevalent

    asked by Denese
  58. Health Adminstration

    Analysts believe that although the medical arms race may have led to quality competition in the 1980s _____ has led to more price competition since the 1990s. a. selective contracting through managed care b. prospective payment c. economies of scale d.

    asked by Ryan
  59. Math

    When I solved these two equation: 3x+4y=8 4x+3y=4 I found that neither of the two lines was perpendicular or parallel. Is this correct? Thanks.

    asked by B.B.
  60. Business

    Gurinder singh runs a small business that manufactures office furniture. His best selling products are office desks and chairs. Sales turnover has risen but profits have stayed constant. The business is also experiencing cash flow problems. a) Explain 2

    asked by Ameena
  61. Financial Matters

    Are there any non-tangibles that could impact the value of a business? I was just curious.

    asked by Anonymous
  62. Calculus

    Using polar coordinates, evaluate the integral which gives the area which lies in the first quadrant between the circles x^2+y^2=64 and x^2 - 8x + y^2 = 0.

    asked by Salman
  63. disease

    a 4 year old caucasian female tired pale and a picky eater only eats pasta breads hot dogs and artificial fruit punch. I cannot find a blood disorder on her. Please help!

    asked by Nancyg
  64. Geography

    1. Which of the following is NOT one of the types of forests that grow in Northern Eurasia? a. mid-latitude deciduous forest b. mixed forest (deciduous and coniferous) c. coniferous forest d. chaparral D? 2. The rivers of Siberia, when not frozen, have

    asked by y912f
  65. Chemistry

    If you have to write the products of the chemical reaction Fe+O*2( asterisk means subscript),how would you know the charge of Fe in the compound FeO? If the charge is 2+, then the product would be FeO, but if the charge was 3+, then the product would be

    asked by Emily
  66. college physics

    A person walks from point A to point B as shown in the figure below. What is the person's displacement relative to A? What is the magnitude? What is the direction ° (counterclockwise from the +x-axis)?

    asked by tumcee
  67. Geography

    28. What information would be the most helpful in drawing inferences about hwy certain countries in Southeast Asia have a large number of Muslims? a. knowing what countries in the region were colonized by France b. knowing what countries were ruled by

    asked by y912f
  68. college physics

    A person walks from point A to point B as shown in the figure below. What is the person's displacement relative to A? What is the magnitude? What is the direction ° (counterclockwise from the +x-axis)? d question is on exactly is on googl

    asked by tumcee
  69. Accounting

    I need help with this problem. Could someone possibly explain to me how to prepare the journal entry for this problem? Prepare journal entries to record each of the following purchases transactions of a merchandising company. Show supporting calculations

    asked by Leah
  70. infants

    Is there a special name for a baby scale?

    asked by Lena
  71. chemistry

    You have 1.600g mixture of NaHCO3 and Na2CO3. You find that 11.60 ml of 2.00M HCl is needed to convert the sample completely to NaCl, H2O and CO2. NaHCO3 (aq) + HCl (aq) -> NaCl (aq) + H2O (l) + CO2 (g) Na2CO3 (aq) +2HCl (aq) -> 2NaCl (aq) + H2) (l) + CO2

    asked by Monica
  72. physics

    A rubber ball filled with air has a diameter of 25.1 cm and a mass of 0.618 kg. What force is required to hold the ball in equilibrium immediately below the surface of water in a swimming pool? I tried using the equation B = density(fluid)volume(object)g B

    asked by Kelsey
  73. Social Studies

    What is the name of the only colony on the South American continent?

    asked by Emily
  74. S.S

    Could you drive from Wisconsin to Michigan without crossing another state? If yes, how? If no, why not?

    asked by Emily
  75. America Literature

    Why Emerson considered man is an analogy? And What is th relationship between human, god and nature in Emerson's point of view?

    asked by Kelly
  76. America Literature

    Why is Whitman the father of America's poet in Emerson's point of view?

    asked by Kelly
  77. algerbra

    Please help to change to an inequality the average speed was between 120 and 130 mph.

    asked by renee
  78. Geography

    The direction from San Antonio, Texas to New Orleans, Louisiana is northeast right?

    asked by Alec
  79. physics

    A shaving/makeup mirror is designed to magnify your face by a factor of 1.33 when your face is placed 20.0 cm in front of it. (a) What type of mirror is it? (b) Describe the type of image that it makes of your face. (c) Calculate the required radius of

    asked by Esmeralda
  80. physics

    A shaving/makeup mirror is designed to magnify your face by a factor of 1.33 when your face is placed 20.0 cm in front of it. (a) What type of mirror is it? (b) Describe the type of image that it makes of your face. (c) Calculate the required radius of

    asked by Esmeralda
  81. elemmanarty algebra

    Divide xy to 3rd power -3xy to 2nd power +2x to 2nd power y by xy

    asked by Anonymous
  82. physics

    A shaving/makeup mirror is designed to magnify your face by a factor of 1.33 when your face is placed 20.0 cm in front of it. (a) What type of mirror is it? (b) Describe the type of image that it makes of your face. (c) Calculate the required radius of

    asked by Esmeralda
  83. Math. Did I get the right answer?

    Identify the properties ( 5 + 3) + 4 = ( 3 + 5) + 4 = Communitive property ( 3 × 2) × 8 = 3 × ( 2 × 8) = associative property

    asked by BWB
  84. Math

    Find simple intrest principal= $300 Rate= 10% Time 3 and a half years

    asked by christopher
  85. Chemistry

    Estimate the value of the equilibrium constant at 550 K for each of the following reactions. 1) 2CO(g)+O2(g)--->2CO2(g) 2) 2H2S(g)--->2H2(g)+S2(g) i used the equation K=e^(delta G/RT) for the first problem and got K=1.40*10^-49 but it was wrong. Is there a

    asked by Kyle
  86. Math

    Find total amount in compound interest account. $9000 IS compounded semiannually at a rate of 11% for 20 years

    asked by christopher
  87. CJS 240

    what are any program-federal, state, or local that emplifies the concept of social structure, social process or social conflict theories? Or any references would be even better.

    asked by sasha
  88. Finance

    1. Following is the projected net income stream associated with the use of Zartek technology. (Note: this net income stream does not take into account that Zartek’s owners invested $2,000 to develop Zartek in Year 0.) Globus Maximus Enterprises would

    asked by Anonymous
  89. Math

    Find the total amount in the compound intrest account. $4000 is compounded annually at a rate of 11% for 3 years. (Round the nearest hundredths as needed)

    asked by christopher
  90. Algebra

    Equation: 2x/5-x/3=5 (2x/5 and x/3 is a fraction) I know that you are suppose to combine like terms, like x, but don't know what I need to do, since they are fractions. Help please.

    asked by Carrie
  91. math

    How do you do this question? A shipment of 25 television sets contains three defective units. In how many ways can a vending company purchase four of these units and receive (a) all good units, (b) two good units, and (c) at least two good units.

    asked by joe
  92. History

    How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia, and Europe?

    asked by Joe
  93. Social Studies

    How do ethnic, racial, and religious hatred weaken society??

    asked by Kaitlyn
  94. English

    Thank you so much for helping me. I really hope you could check a few more sentences on the same subject. 1) She understands at last that her love for Heathcliff is not a romance. Actually, it is concerned with a breaking through beyond the self. 2) She

    asked by Franco
  95. Please check answers

    (-2)7=-2^7 -2^5 = -2*-2 = 4 * -2= -8 * -2 = 16 * -2 = -32

    asked by Bart
  96. Algebra II

    A math book said that the answer to (1 + 1/n) to the nth power was 2.5 when n=1. It seems like the wrong answer to me and that the answer should be 2. Please let me know if I am right or explain if I am wrong.

    asked by Liz
  97. writing

    What is a claim in an argument with argument is intended to support?

    asked by Diane
  98. writing

    a word or phrase- thus, therefore, that shows colculsion up ahead?

    asked by Diane
  99. english writing

    what is a word or phrase- thus,therefore that shows conclusion up a head?

    asked by Diane
  100. english writing

    what is a true non-subjective factual claim?

    asked by Diane
  101. english writing

    what claim is about a matter of fact?

    asked by Diane
  102. geometry

    3. For each of the following, tell how many noncongruent triangles PQR fit the given description, and find the size of angle Q. Make a separate diagram for each case. (a) p = 3, q = 5, angle P = 27 degrees (b) p = 8, q = 5, angle P = 57 degrees (c) p = 7,

    asked by sarah
  103. algerbra

    Translate to an inequality.Use the varible x the price of a baseball glove is at most $35.5o

    asked by renee
  104. Math

    Find total amount in the compound intrest account. $2000 is compounded quarterly at a rate of 8% for 6 years. (Round to nearest Hundereths as needed)

    asked by christopher
  105. trig

    how do you use doubel-angle formulas to find sin, cos, and tan

    asked by matt
  106. math/geometry

    4. The wheels on Devon’s bike have r-inch radii. After the front wheel picks up a tack, Devon rolls another d feet and stops. How far above the ground is the tack? Then,(Continuation) How many degrees does the wheel turn for each foot that it rolls?

    asked by sarah
  107. college

    What are somenotable similarities between Australian and North American cities?

    asked by Betty
  108. Geometry

    Consider again the sphere of radius 5 centered at (2, 3,−6). Describe the intersection of the sphere with the xz-plane. Write an equation (or equations) for this curve.

    asked by Yadlay
  109. algerbra

    The price of an amusment park ticket is greater than or equal to $24.What is the inequality?Please help me to understand. Thanks

    asked by renee
  110. Trig

    4. Asked to simplify the expression sin(180−è), Rory volunteered the following solution: sin(180−è) = sin 180−sin è, and, because sin 180 is zero, it follows that sin(180−è) is the same as −sin è. Is this answer correct? If not, what is a

    asked by sally
  111. chemistry

    A chemist wishes to determine the rate of reaction of zinc with hydrochloric acid. The equation for the reaction is: Zn(s) + 2HCl(aq) ---> H2(g) + ZnCl2(aq) A piece of zinc is dropped into 1.00 L of 0.100 M HCl and the following data were obtained:

    asked by Juggy
  112. Trig

    A. Find simpler, equivalent expressions for the following. Justify your answers. (a) sin(180 + è) (b) cos(180 + è) (c) tan(180 + è) B. Show that there are at least two ways to calculate the angle formed by the vectors [cos 19, sin 19] and [cos 54, sin

    asked by sally
  113. Math

    Use rational exponents to simplify the radical. If rational exponents appear after simplifying, write the answer in radical notation. 20sqrt(x^12)

    asked by Help please
  114. Math

    Use rational exponents to simplify the radical. If rational exponents appear after simplifying, write the answer in radical notation. 3sqrt(2)/ 5sqrt(2)

    asked by Help please
  115. physics

    A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod

    asked by stacey graham
  116. physics

    A large chandelier weighing 1500lbs. is suspended from the roof of a theater lobby. The steel pipe from which it hangs is 20ft long. Determine the size of the pipe necessary to carry chandelier safely. Use A36 steel. What is the resulting elongation of the

    asked by stacey graham
  117. math

    The length of a drawing of a tool is 3/8 of the length of the actual tool. If the length of the drawing of the tool is 6 inches, what is the length,in inches ofthe actual tool?

    asked by john
  118. math

    If x + 3/2 is an integer, then x must be what

    asked by john
  119. physics

    Find moment of Inertia Ix and Iy for the built up steel beam. The 1"x32"plate is centered on the wide flange web together with the 2"x16" plate. The steel beam is a W18x71 (Area=20.8in^2 diameter=18.47 tw=0.495 Ix= 1170in^4 Iy= 60.3in^4) To get better

    asked by stacey graham
  120. Physics

    The length of a simple pendulum is 0.72 m, the pendulum bob has a mass of 305 grams, and it is released at an angle of 10° to the vertical. a) With what frequency does it vibrate? Assume SHM. (b) What is the pendulum bob's speed when it passes through the

    asked by Luricela
  121. physics

    A space probe lands on the icy surface of Europa, a moon of Jupiter. It weighs a set of known masses. The results are shown below. Mass (kg) 0.1 0.2 0.3 0.4 0.5 Weight (N) 0.15 0.30 0.36 0.55 0.68 a) i) Plot a graph of this data on the axes given (done)

    asked by Eloise
  122. Math

    If xy=7 and x-y=5 then x2 y-xy2=

    asked by John
  123. math

    __X+3___ is an integer, than X must be? 2

    asked by John
  124. chemistry

    What is the pH of the solution created by combining 2.20 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)?

    asked by bme1
  125. chemistry(check my asnwer)

    Why doesn't potassium ion K+ from KMnO4 appear in the following two unbalanced equations: MnO4– + C2O42– Mn2+ + CO2 MnO4– + Fe2+ Mn2+ + Fe3+ ? A. KMnO4 is not added to either reaction. B. The presence of K+ would result in a net positive charge in

    asked by eng
  126. chemistry

    Wich of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is titrated to correct for any reactive impurities in the solvent. For this experiment, the impurities would be reducing agents that would

    asked by eng
  127. philosophy

    What makes pity the such a horrible emotion? How is it counter to Nietzsche conception of the good? Please I don't know where to start!!!!!

    asked by Dean
  128. Check answer

    Does (-2)^7 = -2^7

    asked by Bart
  129. math

    2-x>17 wold it be x

    asked by Abgail
  130. Math

    Test for symmetry with respect to Q=pi/2 , the polar axis and the pole. r = 16 cos3Q Please explain. I do not know how to do this. Thank You!!

    asked by Abbey
  131. us history

    what was the first big business in american history?

    asked by cliff
  132. Geography

    What Government imposed barriers to stop or hinder the export of automobiles?

    asked by HelloKitty
  133. Chemistry

    How come the charges of H*2O*2 (asterisk means subscript), which is hydrogen peroxide,don't equal? The charge of hydrogen is 2, and the charge of O is 4. For an ionic compound you can figure out the formula by the charges(when the charges of the ions add

    asked by Emily
  134. us history

    the arid and difficult conditions of the landscape rather than new land laws passed to assist settlers were more important to shaping the emerging institutions of the american west in the later decades of the 19th century true or false?

    asked by cliff
  135. Math

    A point in polar coordinates is given, Find the corresponding rectangular coordinates for the point. (r,Q) = (4, 3pi/2) I know that you are suppose to use x=r cos Q and y=sin Q but I do not know how to plug this in.

    asked by Abbey(Please help)
  136. us history

    identify five reasons why european immigrants took flight from europe during the late 19th and early 20th centuries.

    asked by cliff
  137. Chemistry

    Consider the evaporation of methanol at 25.0 C: CH3OH(l)--->CH3OH(g) Delta G= 4.3 kJ Find Delta G at 25.0 C under the following nonstandard conditions: Pressure of CH3OH= 15.0 mmHg.

    asked by Kyle
  138. chemistry

    Calculate the solubility (in g/L) of silver carbonate in water at 25°C if the Ksp for Ag2CO3 is 8.4 x 10^-12

    asked by Bababa
  139. Math

    Find the composition. If f(x) = x^2 + 12 and g(x) = x^2 - 5, find (g*f)(x)

    asked by Urgent!!
  140. math

    On a square gameboard that is divided into n rows of n squares each, k of these squares lie along the boundary of the gameboard. Which of the following is a possible value for k?

    asked by john
  141. us history

    discuss the applicative meaning of the 18th century theory known then as recapitulation

    asked by cliff
  142. us history

    identify the six groups or individuals fredrick jackson turner ommitted from his thesis regarding the frontier experience in american history....

    asked by cliff
  143. Chemistry

    Calculate the amount of energy in kilojoules needed to change 225 g of water ice at -10 C to steam at 125 C. The following constants may be useful: Cm(ice)=36.57 J/(mol*C) Cm(water)=75.40 J/(mol*C) Cm(steam)=36.04 J/(mol*C) Delta H(fus)=+6.01 kJ/mol Delta

    asked by Eddie
  144. Math

    Solve the equation. log 6.44 + 3 log x - log x^2 = log 6.44 + 3

    asked by Urgent!!
  145. Math

    Solve. The population of a particular country was 29 million in 1980; in 1989, it was 36 million. The exponential growth function A=29e^kt describes the population of this country t years after 1980. Use the fact that 9 years after 1980 the population

    asked by Anonymous
  146. Chemistry

    0.05 mole of HCL is added to a liter of buffer containing 0.04 mole of NH3 and 0.03 mole of NH4CL. What is the ph? Kb= 1.8X10^-5

    asked by Cathy
  147. Math

    $6550 is compounded semianually at a rate of 18% for 18 years. find the total amount in the compound interest account round to the hundredth as needed.

    asked by christopher
  148. Calculus

    Suppose that ∫∫_D f(x,y)dA=3 where D is the disk x^2+y^2

    asked by Salman
  149. chem

    Calculate the hydrogen ion concentration of a 3.55×10-4 M solution of the strong base KOH. Round your answer to 3 significant digits.

    asked by kathy
  150. English-Poetry

    What does this line mean? What does it describe? Believe that right now there is someone who beleives in the eonder that's you -By Wish Belkin I think that it seems to give readers the courage to seek out in the real world and show their unique personality

    asked by Sara
  151. psychology

    How do various behaviors of social dominance and courtship display affect the evolutionary process?

    asked by erica
  152. auguta tech

    Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. Percentage of scores less than 100=50 percent b. Relative frequency of scores less than

    asked by cynthia
  153. physcs

    A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kg·m2 is rotating freely at 55 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 66 N. Find the effective

    asked by Kelsey
  154. stats

    The probability of receiving a false positive on a mammogram is 7%. If the patient receives 10 mammograms in her lifetime what is the probability that none of the tests come back as a false positive?

    asked by kathryn
  155. Economic

    Why is demand history irrelevant for the management of raw materials and work-in-process inventories?

    asked by Jeniffer
  156. Reading

    In the sentence "Ships have sunk for no apparent reason", would the word obvious, general,or simple best fit the word apparent?

    asked by Eliza
  157. Trig

    The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR. (d)

    asked by Sarah
  158. science

    1. What are expansion joints, and why are they used?

    asked by Anonymous
  159. Reading

    In the sentence "Each autumn, some hurricanes track directly through the Bermuda Triangle." would definition 1.a path along which something travels 2.observe the progress of or 3. move over or along, fit for the word travel?

    asked by Eliza
  160. auguta tech

    a. Percentage of scores less than 100=50 percent b. Relative frequency of scores less than 120= 0.34+0.135+0.0235+0.015+0.84 c. Percentage of scores less than 140 d. Percentage of scores less than 80 e. Relative frequency of scores less than 60 f.

    asked by cynthia
  161. Math

    Use patterns or a linear equation to complete the table. P 2 88 8 10 ? Q 22 ? 110 110 330

    asked by Lori
  162. math Did I do it right?

    Use front-end estimation to find the value of the expression. I do not understand (without adjustment) 687 - 239 (without adjustment) is this right? 600 + 200= 800 + 126=926

    asked by Bart
  163. english

    how would i compare and contrast these two realist stories a good man is hard to find by flannery o' Connor and a pair of silk stockings by kate chopin

    asked by sara
  164. chemistry

    what is the relationship between pH and H+ and how do i show examples?

    asked by sarah
  165. chemistry

    what is the relationship between reaction rate and shape of equilibrium graph in terms of concentration versus time?

    asked by sarah
  166. Chemistry

    If 2 g of salicylic acid is heated with 4 g of acetic anhydride, what is the theoretical yield ? C7H6O3 + C4H6O3 --> C9H8O4 + C2H4O3

    asked by Fiona
  167. physics

    Find Beta and Gamma for an electron that has a kinetic energy of 6.00 keV. â? gamma = KE/MoC^2 + 1 Beta = 1/gamma^2 + 1 gamma = 1.011723381 Beta = 1.9769592 I got gamma correct but my answer but im getting gamma incorrect can anyone explain what could be

    asked by Andy
  168. physics

    A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod

    asked by stacey graham
  169. physics

    Find moment of Inertia Ix and Iy for the built up steel beam. The 1"x32"plate is centered on the wide flange web together with the 2"x16" plate. The steel beam is a W18x71 (Area=20.8in^2 diameter=18.47 tw=0.495 Ix= 1170in^4 Iy= 60.3in^4) To get better

    asked by stacey graham
  170. physics

    A large chandelier weighing 1500lbs. is suspended from the roof of a theater lobby. The steel pipe from which it hangs is 20ft long. Determine the size of the pipe necessary to carry chandelier safely. Use A36 steel. What is the resulting elongation of the

    asked by stacey graham
  171. Math

    The total amount being spent on personal calls in a month by employees of a company follows a normal distribution with a mean of $900 and a standard deviation of $50. Find the probability that in a randomly selected month the amount spent on personal calls

    asked by Lori
  172. Math

    Susan's group of close friends are going to fifth grade in September. All are going to Belleview Elementary and their homerooms will be rooms 12, 14, or 16. All of her friends but 4 are going to room 12, all but 4 are going to room 14, and all but 4 are

    asked by Mia
  173. Mathematicas

    Sam and Susie are twins. Sam has as many brothers as he has sisters. Suzie has at least 1 sister, and twice as many brothers as sisters. How many kids are in the family altogether?

    asked by Nina
  174. algebra I

    determine the minimum furnance output,b solve for a, that is solve b=27a with 2100 ft square flooring.

    asked by marilyn
  175. marketing

    ______________ is the process of naming broad product-markets and then segmenting these broad product-markets in order to select target markets and develop suitable marketing mixes

    asked by tommy
  176. Chemistry

    Calculate the pH of the titration of 100.00 mL of 0.200 M HOCI with 0.400 M KOH after 0, 25.00, 50.00, & 75.00 mL of KOH have been added. The Ka for HOCI is .000000035...Please Help!!!!

    asked by Need Chem Help
  177. chemistry

    why are the flair lights at the air port yellow/orange instead of white? my teacher gave me until monday 18th to answer this and i think he expects a scientific answer but i have nothing

    asked by vanessa
  178. Algebra

    (5c-9)(5c+1)

    asked by Kharla