Questions Asked on
April 23, 2017

  1. physical chemistry

    Estimate the boiling point of 250 cm3 of water to which 12.6 g of phenol(C6H5OH) has been added. Treat the solution as ideal.( water of boiling point elevation is 0.51K/mol)

    asked by Byeong Ju
  2. math

    A 0.500 kg wheel that has a moment of inertia of 0.015 kg m^2 is initially turning at 30 rev/s. it starts to rest after 163 revolution. how large is the torque that slowed it?

    asked by krisna
  3. PHYSICS

    A 0.500 kg wheel that has a moment of inertia of 0.015 kg m^2 is initially turning at 30 rev/s. it starts to rest after 163 revolution. how large is the torque that slowed it?

    asked by krisna
  4. Math

    2arcsin(x/underroot6)+arcsin(4x)=180/2

    asked by Anonymous
  5. Math

    Prove that (4tanx(1-tanx)square)/((1+tanx)square)square=sin4x

    asked by Ivan h
  6. history

    why did the french revolution take place in 1789 and not before that date

    asked by adiona
  7. Algebra

    What are the next three terms in the sequence? -1, 9, 19, 29, ... A. 38, 37, 32 B. 40, 51, 62 C. 39, 49, 59** D. 38, 47, 56

    asked by Math Help
  8. Pls help urgent math

    2/7 part of a cable was laid on the first day, 1/5 part on the second day and 1/3 part was laid on the third day. If 443 1/3m was laid on the fourth day to complete the work, what is the total length of the cable laid?

    asked by Iron Sparrow
  9. maths

    Let A1 = { 1 , 2 , 3 , 4 , 5 , 6 }, A2 = { 7 , 8 , 9 , 10 , 11 , 12 , 13 } and A3 = { 14 , 15 , 16 , 17 , 18 , 19 }. How many non-empty sets are there which are a subset of A1 OR a subset of A2 Or a subset of A3?

    asked by s17
  10. Maths

    How many positive integers less than 1000 are there which contain at least one 4 or at least one 9 (or both)?

    asked by s17
  11. maths

    In the local boating pond there are 11 plain wooden boats, each with a different number. The owner decides that some of these boats will be painted: one in blue, one in green, one in red, and one in orange and the remaining are left unpainted. How many

    asked by s17
  12. accounting

    ABC Corp Ltd has 10 million shares and $600,000 of debt (issues bonds @ 7% p.a.). EBIT is projected to be $3 million. The company tax rate is 20%.Preference shares pay an annual dividend of $100,000. Management is considering two options for capital

    asked by Reshmi
  13. algebra

    The length of a rectangle is twice the width.  If the length is increased by 4 inches and the width is diminished by 1 inch, a new rectangle is formed whose perimeter is 198 inches.  Fine the dimensions of the original rectangle.

    asked by nisha
  14. Math

    Solve 24,000X0.04X30years=

    asked by Judy
  15. geomeotry PLEASEE HELPPPPPPp!

    The perimeter of the base of the regular quadrilateral pyramid is P = 30 cm. Find the sum of all edges of this pyramid, if the perimeter of a lateral face is 27.5 cm

    asked by Katniss Everdeen
  16. literature

    How is the concept of cultural encounter treated in the short story “One out of Many”?

    asked by dana
  17. Chemistry

    Why is the selenate ion, SeO42−, is more stable in aqueous solution than is the tellurate ion, TeO42-?

    asked by Mr. Swagigga
  18. trig

    Find all solutions in the interval [0, 360) 8cos^2x+6cosx+1=0

    asked by Ellie
  19. English

    Compare Lines 586-87 with those spoken by Satan in Book I: "The mind is its own place, and in itself Can make a Heav'n of Hell, a Hell of Heav'n."

    asked by Emily
  20. algebra HELP PLEEEEASE

    Solve the following system using elimination or substitution. show your work. y = x^2 - 2x - 6 y = 4x + 10 Please explain how to do this and the answer! THANKS!

    asked by help plesze
  21. maths

    A teacher driving his vehicle at 24 kmph reaches her school 5 minutes late.If She had driven the vehicle 25% faster on an average she would have reached 4 minutes earlier than the scheduled time. How far is her school ?

    asked by kumar
  22. programming

    Write the pseudocode for an application that accepts enter eight friends’ first names and displays them in alphabetical order

    asked by alex
  23. @ Online Students

    A student recently posted this. Please think about it. "quick backstory; i've been cheating on all of my work except portfolios this whole year cause i'm in online school. but i'm wanting to learn since there's gonna be ACT test in REAL so... please help

    asked by Ms. Sue
  24. ALG II COT

    Have a tommorrow and want to make sure I understand the COT (cotangent) formula could someone give me a problem to do and check it. Thanks Sam

    asked by Sam
  25. 2 math questions, urgent plz help!!

    The line with equation a + 2b = 0 coincides with the terminal side of an angle θ in standard position and cos θ

    asked by Jenn
  26. chemistry

    Calculate the molar solubility of BaSO4 in a solution in which [H3O+] is 0.50 M. Ksp(BaSO4) = 1.1×10-10, Ka(HSO4-)=1.02×10-2

    asked by anna
  27. math

    You place a bet on the number 21 in roulette. The probability of winning is 1 38 , and the company hosting the casino night for a city fundraiser gives the payoff odds as 35:1. What are the odds that the ball will land on the number 21? 1:37 1:38 1:35 1:21

    asked by Arianne
  28. Math

    If

    asked by Sara
  29. Algebra

    Bob is going from his house to his uncle Sam's house in another state. He started running. After a while he switches to a bicycle. After a while he switches to a truck. After a while he switches to a sports car. After a while he switches to a helicopter.

    asked by Juliana
  30. Alg II COT

    Hi - any problem you can give me to make sure I understand ex: square root 3, 1, square root 3 (over) 3, 0

    asked by Sam (bob pursley)
  31. Scientific Method

    Joe Student rolled a toy car down a ramp and measured how far it traveled along the floor. He recorded the distance along with the original mass of the toy car. Then, he taped a penny to the roof of the same toy car, measured its new mass, and rolled it

    asked by Davvy
  32. math help please check my answer

    A roofer is standing on the roof of a house 60 ft above the ground. His truck is parked 25 ft from the house. What is the angle of depression from the roofer to his truck? Round to the nearest whole degree. 22° 23° 67° 68°

    asked by mack
  33. math

    1-A matching card game contains 48 cards. Each card shows a piece of fruit, and there are 8 cards of each fruit in the deck. What is the probability of randomly selecting a picture of a banana? 6 1 1 8 5 6 1 6 2.A standard deck of 52 cards contains 4 aces.

    asked by Arianne
  34. check my answers? language arts

    1. The fire's angder could no be contained. A). personification *** B.) simile C.) metaphor 2. The flames ran along the deliberate rows of vines, like long curved fingers reaching for the horizon, lighting the night sky. A). personification B). simile C).

    asked by Sofet
  35. Math

    If

    asked by Sara
  36. algebra

    What is the domain for f(x)=8(2)^x

    asked by Jay
  37. Math geometry

    The surface area of a cube is 96in2.what is the volume of the cube?

    asked by Steven
  38. Political Science

    In the Unit 4 lecture on elections, you learned about the median voter theorem. Describe the median voter theorem as it was explained in the lecture. Now, think about the political parties and leadership roles you learned about in Unit 5. How do political

    asked by Ethan
  39. Chemistry

    In a given experiment 36.44 mL of NaOH were required for neutralize a solution of HCl 0.35 M. Calculate the moles of NaOH present to neutralize the HCl in the titration.

    asked by Anon
  40. Algebra Please Help Urgent

    Bob is going from his house to his uncle Sam's house in another state. He started running. After a while he switches to a bicycle. After a while he switches to a truck. After a while he switches to a sports car. After a while he switches to a helicopter.

    asked by Anonymous
  41. alg 2 cotangent

    Hi - any problem you can give me to make sure I understand ex: square root 3, 1, square root 3 (over) 3, 0

    asked by sam
  42. Algebra PLEASE HELPPP ASAP NEED HELP!!!

    In a two-digit number the units’ digit is 7 more than the tens’ digit. The number with digits reversed is three times as large as the sum of the original number and the two digits. Find the number.

    asked by Katniss Everdeen
  43. geometry please help!!!!

    The base of a right prism is isosceles trapezoid with legs c=d = 5 cm, bases a=8 cm and b=14 cm, and altitude of the trapezoid k=4 cm. The height of the prism h=10 cm. Find: Lateral area

    asked by Katniss Everdeen
  44. Chemistry

    Choose the most polar bond from the options given below. a) B-O b) B-S c) C-N d) C-O

    asked by Anon
  45. English

    For the following sentences, insert commas, quotation marks, and capital letters where they are needed. Write "C" if the sentence is correct. 1) When I shrieked in fear,the usher  warned me to be quiet.

    asked by Hayden
  46. English

    Use capital letters, quotation marks, and other punctuation marks where they are needed in each of the following sentences. 1. I've read, Janell quickly replied, the one titled, Beat the Story-Drum, Pum-Pum. 2. Isn't that Elton asked about African American

    asked by Hayden
  47. Calculus

    If y = 18 - 3x, what is the maximum value of the product 2xy? A. -3 B. 0 C. 3 D. 6 E. 54 I found that the value of the maximum occurs at x = 3, but that the value itself is 54. Is E the answer?

    asked by Anonymous
  48. alg II

    what is the angle whose cotan is 1? what is the angle whose cot is sqrt 3? 45 degree 30 degree are these correct

    asked by sam
  49. Math- Please help

    Al and Bill live at opposite ends of the same street. Al had to deliver a parcel to Bill’s home, Bill one at Al’s home. They started at the same moment, each walked at constant speed and returned home immediately after leaving the parcel at its

    asked by Sara V.
  50. English - check

    New Mexico now claims to have 72 percent of the country's uranium reserves. Just checking in advance but would the function of this infinitive phrase be direct object since it's receiving action from the verb?

    asked by Katarina
  51. Calculus

    If g(x) = integral from 0 to x^2 of √(t^3+2) then g'(2) = ?

    asked by Anonymous
  52. English - check

    This rock turned out to be high grade uranium ore. Function is adjective Uranium is a radioactive element that is used to create nuclear energy. Function is Adjective During the spring of 1950, a man bent down to pick up a yellow rock. Function is Direct

    asked by Katarina
  53. education

    I need help finding a local public policy web site and federal public policy website on foster care.

    asked by sandy
  54. Technology and Society

    A Web site that has a posted privacy policy protects users from A. use of information for marketing. B. release of personal identification. C. release of information on browsing history. D. downloading of computer viruses.

    asked by Kovia
  55. Chemistry

    Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Cr2 ] = 0.875 M and [Ni2 ] = 0.0100 M. I keep on getting the answer .42 which is incorrect. Thank you so much in advance!

    asked by Julia
  56. Math

    Suppose that an animal's circadian rhythms tell it to eat a meal every 4h. How meals will the animal eat each day.

    asked by Linda
  57. grammar check

    Uranium is a radioactive element that is used to create nuclear energy. Predicate Noun

    asked by Anonymous
  58. infinitive

    New Mexico has petroleum, potash, copper, and natural gas-to name a few. Function- adjective

    asked by check grammar
  59. statistics

    The distance travelled in a week by sales staff employed by a nationwide security firm is approximately normally distributed with a mean of 200 miles and standard deviation of 48 miles. a) less than 80 miles, b) more than 250 miles, c) between 100 and 300

    asked by Joshua
  60. Social Studies

    1.What was North Korea’s response to President George W. Bush’s 2001 threat to stop negotiations? A. North Korea immediately gave in to his list of conditions. B. North Korea resumed its nuclear program. C. North Korea sought the help of the United

    asked by YunoGasai
  61. History URGENT!

    Young civil rights activists attempted to desegregate Southern restaurants by holding A) Protest B) Sit-ins C) Boycotts

    asked by cody
  62. Statistics

    In 2015, the average price of new homes in a certain suburb was $145,000. Assume that this mean is based on a random sample of 1000 new home sales and that the sample standard deviation is $24,000. Construct a 99% confidence interval for the 2002 mean

    asked by Jerold
  63. Chemistry

    The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 7.79-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the

    asked by Jackie
  64. Math

    The bottom of a picture five feet tall is four feet above the level of an observer's eyes. How far from the wall on which the picture hangs should the observer stand in order that the picture subtends the greatest possible angle at the observer's eyes?

    asked by Parker
  65. Statistics

    The correlation coefficient between X and Y is the same as the correlation coefficient between Y and X. True - If you were to find the correlation coefficient with a given data set for x and y, it would have the same correlation coefficient value as y and

    asked by Nick
  66. Chemistry

    How would I balance the following redox equation? I know the Charge on the Br is 5, but i am comfused on where to go from there. H20 + Br^- + Al^3+ -> Al + BrO3^- + H^+ Thank you so much in advance

    asked by Hannah
  67. math

    A regular hexagonal pyramid has a perpendicular height of 42.0mm.If the distance across the flats of the hexagonal base is 18m find the volume and the lateral surface area of the pyramid.

    asked by Kepas
  68. Statistics

    If the slope of the regression line is negative and the correlation coefficient is -.5, coefficient of determination is: - It would be -0.25. Correlation coefficient = r and coefficient of determination = r^2. Then, coefficient of determination would be

    asked by Jared
  69. HISTORY HELPPPP

    In 1965, President Johnson significantly increased the number of U.S. troops in Vietnam because A)air strikes had made it safe for ground forces to enter the war. B) communist forces continued to fight despite intense U.S. bombing. C)South Vietnamese

    asked by Jessica
  70. Math- PLEASE HELP. I DONT UNDERSTAND THIS QUESTION

    What is the formula for base, b, of a triangle if the area is A and the height is h?

    asked by Crystal
  71. Math

    $24,000X0.04X30years (deposit of $24,000 and compound interest monthly of 4% for 30 years ?

    asked by Judy
  72. Mathematics

    You live 2 3/4 miles from school. In the morning, you walk 1/3 mile directly toward school to take the bus. After school, you walk home the same distance when the bus drops you off. How many miles do you ride the bus to and from school each day?I dunno

    asked by Unknown
  73. physics

    A mass on a spring A oscillates at twice the frequency of the same mass on spring B. Which statement is correct? A. The spring constant for B is one quarter of the spring constant for A. B. The spring constant for B is 4 times the spring constant for A. C.

    asked by Idali
  74. physics

    When an object is moving in a simple harmonic motion, which of the following is at a minimum when the displacement from equilibrium is zero? A. the magnitude of the velocity B. the magnitude of the acceleration C. the kinetic energy D. the total mechanical

    asked by Idali
  75. MATHS

    IN RECTANGLEABCD, AB=25CM ,BC=15CM.IN WHAT RATIO DOES BISECTOR OF ANGLE CDIVIDES AB?

    asked by deevi
  76. physics

    A crest on a transverse wave is to a compression in a longitudinal wave as a trough is to: A. a resonance B. a beat C. interference D. a rarefaction E. an antinode

    asked by Idali
  77. Calculus (trig derivatives)

    A lighthouse 2 miles offshore has a light that rotates once every 20 seconds. At what rate is the light traveling along the shore if it is shining on a point 4 miles along the shore from the point nearest the lighthouse?

    asked by Sarah
  78. calculus

    Find the exact area of the surface obtained by rotating the curve about the x-axis. y=((x^3)/4)+(1/3X), 1/2≤X≤1

    asked by alex
  79. Calculus

    If dy/dt = k/y and k is a nonzero constant, which of the following could be y? A. y = √(2kt + 16) B. y = kt + 5 C. y = √(kt + 16) D. y = 5e^(kt) E. y = √(2kt) + 4 I got E by finding the integral of y dy = k dt.

    asked by Anonymous
  80. MATHS

    PQRS is a rectangle. The perpendicular ST FROM S ON PR DIVIDES ANGLES IN RATIO 2:3 .FIND ANGLE TPQ.

    asked by DEEPI
  81. MAth

    IN RECTANGLE ABCD ,AB=25CM, BC=15CM. IN WHAT RATIO DOES BISECTOR OF ANGLE C DIVIDES AB?

    asked by SAM
  82. MAth

    PQRS IS A RECTANGLE AB=25CM, BC=15CM .IN WHAT RATIO DOES BISECTOR OF ANGLE C DIVIDES AB?

    asked by SAM
  83. Math

    You have 6 bracelets and 15 necklaces. Find the number of ways you can wear one bracelet and one necklace.

    asked by Hailey
  84. physics

    The figure shows a stationary arrangement of two crayon boxes and three cords. Box A has a mass of 12.6 kg and is on a ramp at angle θ = 28.9o; box B has a mass of 6.06 kg and hangs on a cord. The cord connected to box A is parallel to the ramp, which is

    asked by mik
  85. Physics

    A uniform rod of mass 444 g and length 1.41 m is pivoted about one end and oscillates in a vertical plane. Find the period of oscillations if the amplitude of the motion is small. The acceleration of gravity is 9.8 m/s^2. Answer in units of s.

    asked by Dj
  86. Statistics

    The correlation coefficient between X and Y is the same as the correlation coefficient between Y and X: True or False - I believe it is True because calculating the correlation coefficient for X and Y and Y and X will give you the same answer.

    asked by Tom