Questions Asked on
January 27, 2018

  1. Chemistry

    Rank the compounds by stand molar entropy. F2(g), Ne(g), HF(g) I am a little confused by this question, wouldn't it be ranked by the molar mass of each compound? So, F2(g) is the highest and HF(g) is the lowest in entropy?

    asked by Anonymous
  2. Chemistry

    Which of the following are exact numbers? a. There are 100 cm in 1 m. b. One meter equals 1.094 yard. c. We can use the equation: F=9/5 C + 32 to convert from Celsius to Fahrenheit temperature. Are the numbers 9/5 and 32 exact or inexact? d. π

    asked by Dalal
  3. Math

    If a=25cm and b=2meters, what is the ratio of a to b?

    asked by Raquel
  4. Chemistry

    A copper wire (density=8.96 g/cm^3) has a diameter of 0.25 mm. If a sample of this copper wire has a mass of 22 g, how long is the wire?

    asked by Dalal
  5. General Chemistry II

    At a pressure of 1ATM, _____ KJ of heat is needed to vaporize a 32.3 g sample of liquid ethanol at its normal boiling point of 78.4 C. Boiling point (78.4 C), specific heat (2.46 J/g C), and Hvap(78.4 C)=38.6 KJ/mol are provided. Please include how to

    asked by Jessica
  6. physics

    A wave traveling along the x axis is described mathematically by the equation y = 0.17sin(8.5πt + 0.45πx), where y is the displacement (in meters), t is in seconds, and x is in meters. What is the speed of the wave?

    asked by Amelia
  7. English

    1. He is looking for the key in the room. 2. He is looking for the key which is in the room. 3. In the room, he is looking for the key. [Does #1 mean #2 or #3? Are both okay? It is ambiguous, isn't it?] 4. Look at the boy in the shop. 5. Look at the boy

    asked by rfvv
  8. Math

    "How many ways are there to arrange some, but not all, of the letters in "Suspension" if at most once copy of each letter can be used? I have a start... I think the part that says "at most" one copy means that you have to remove one of the "s"'s thus

    asked by John
  9. Chemistry

    A student performed an analysis of a sample for its calcium content and got the following results: 14.92% , 14.91%, 14.88% , 14.91%. The actual amount of calcium in the sample is 15.70%. What conclusion can you draw about the accuracy and precision of

    asked by Dalal

    The Problem: Create three sets P, Q and R such that: P ∩ Q = P P ∩ R =empty set Click for more options Q ∩ R has exactly 3 elements 1 mark for creating 3 sets 1 mark for satisfying P ∩ Q = P 1 mark for satisfying P ∩ R =empty set

    asked by V
  11. math (trigonometry)

    A ferris wheel has a diameter of 100m and the bottom of the wheel is 4m above the ground. It rotates two times every 10 minutes. Using this information, complete each question. c) Determine the angular velocity of the Ferris wheel in radians/second d)How

    asked by Laura
  12. Tech

    A cyber community is different than a physical community because _________________. A.people can go to restaurants to meet friends B.real people interact with each other ***** C.people can do research in a library D. people can post a profile with a

    asked by U dew nut nu de wae

    The Problem: The set T is defined to be all two digit multiples of 2 under 25. 1. How many subsets are there for T? 2. Create a set, V, that is a subset of T. 3. State an element that is in T but not in V. 5 MARKS: 1 mark for showing work in a) 1 mark for

    asked by V
  14. Math

    40,50,60,70,80,90,100,110,120,130 according to the box and whisker plot shows above what are the following: 1.the median? 2.the 25th percentile? 3.the value of the third quartile? 4.the minimum value? 5.the maximum value? My answer 1.85 2.40 3.112.5 4.40

    asked by Sunji

    The Problem: We have looked at the probability that two non-mutually exclusive events A or B can happen in this learning experience. We will take it one step further and look at the probability that event A or B or C will happen. The formula is: P[A or B

    asked by V
  16. Calculus

    Evaluate slope of a tangent line: y=1-(1/2)x^2, P(2,-1) The answer is supposed to be -1, but I'm getting -2. [1-2-2h-(1/2)h^2]-[-1]/h [-1-2h-(1/2)h^2+1]/h [h(-2-1/2h)]/h -1/2(0)-2 =-2

    asked by Mike
  17. English

    1. How much money do you have? 2. I have money in abundance. 3. I have money in profusion. [Are the answers acceptable? The prepositional phrases are adveb phrases, aren't they?] 4. How many books do you have? 5. I have books in abundance. 6. I have books

    asked by rfvv
  18. spanish

    What emotion do sevillanas usually tell about

    asked by Erica McDonnell
  19. Chemistry

    85ml of 0.1M h2so4 solution is titrated against 0.1N koh solution . Calculate the concentration of salt formed when the acid is one fourth neutralized.

    asked by Piyush
  20. Anatomy

    An elevated level of Helicobacter pylori may result in A. reflux esophagitis. B. enteritis. C. peptic ulcer disease. D. gastritis. C

    asked by Dog
  21. Science

    What are the organs that fat bodies are adjacent to in the frog? It is a six letter word.

    asked by Ann
  22. Science

    what is the name of the structure that air passes through when going to lungs from mouth in the frog?

    asked by Harry
  23. Science

    What are the organs that fat bodies are adjacent to in the frog? It is a six letter word.

    asked by Ann

    The Problem: Here is important information: Part A: You want to explore the costs of renting and buying a property that you're interested in during the year 2010. You have it narrowed down to a few homes in the same neighbourhood. All homes remain at the

    asked by V

    There are online sports sites which offer free game simulations. For example, you can pick a sport (baseball, basketball, football, college football or basketball and hockey). Then pick any two teams from the same or different eras. Finally, simulate a

    asked by V
  26. physics

    A golfer imparts a speed of 40.0 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a) How much time does the ball spend in the air? (b) What is the longest "hole in

    asked by zach
  27. physics

    An airplane with a speed of 88.2 m/s is climbing upward at an angle of 55.6 ° with respect to the horizontal. When the plane's altitude is 523 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly

    asked by zach

    The Problem: Two teams, the Exponents and the Radicals, square off in a best of 5 math hockey tournament. Once a team wins 3 games, the tournament is over. The schedule of the tournament (for home games) goes: E-R-E-R-E If the Exponents are playing at

    asked by V

    The Problem: Zared plays basketball on his high school team. One of the things he needs to practice is his free throws. On his first shot, there is a probability of 0.6 that he will make the basket. If he makes a basket, his confidence grows and the

    asked by V

    The Problem: Create a quadratic function to model the height of an object thrown into the air with the following conditions The maximum height is between 90 and 100 m The object is starts on the ground The object takes at least 10 s before returning to the

    asked by V

    The Problem You are given a piece of cardboard that is 6 inches by 4 inches. You would like to cut equal-sized squares out of each of the 4 corners and fold the cardboard in such a way to make an open-top rectangular box. Part A: Complete the table below:

    asked by V

    The Problem: The population of Manitoba from 1975 to 2010 is given in 5-year increments. Year/Population 1975 1,019,529 1980 1,033,557 1985 1,078,327 1990 1,102,752 1995 1,124,947 2000 1,144,428 2005 1,176,114 2010 1,226,738 1. Find a quadratic equation of

    asked by V
  33. Math

    Decoration:? Candy:45 Invitation:45 Music:40 Party hall rental:80 Food:65 Prizes:30 Costumes:40 Mary is planning a costume party. she spent $375.00 a show on the graph. How much of the money was spent, to the nearest Dollar, on the following items? 1.on

    asked by Sunji
  34. Math

    x + y = 21 what can be the smallest integer for positive xy

    asked by tasha
  35. Math

    Question: x/15=3 My answer: 45 Am I correct? Did I make a mistake? I've been having problems with math recently, so I wont be surprised if I made a mistake.

    asked by Cassidy
  36. Geometry

    1. Use the following set of numbers: 7, 24, 25 Check all that apply below.  The set forms the measures of the sides of a right triangle.  The set forms a Pythagorean triple.  The hypotenuse is 24.  One of the legs of the triangle 25.  The

    asked by Anonymous
  37. Social Studies

    what is the panchatantra A.a collection of saying buddha B.a book of fables or animal stories C.Tales of Hindu gods D. A recently found Text from Mohenjo-Daro

    asked by Zackery
  38. Chemistry

    I have no idea how I would determine the answers to these questions. What am I supposed to do? Based on the properties of the attached functional group, which one of the compounds below would you expect interact most strongly with water, thereby increasing

    asked by Anonymous
  39. Calculus 1

    ((1/x)-(1/a))/(x-a) how to solve

    asked by Anonymous
  40. Math

    Elizabeth has 1 7/10 as many plants as Rosalie has in her garden. If Elizabeth has 51 plants, how many plants does Rosalie have? Is the answer 1/30?

    asked by Cassidy
  41. Math

    Hi! Can someone check my answers for these two questions? Cheryl pours 1 pint of milk from a full 1-gallon jug. How much milk remains in the jug? 1 pint 3 pints 5 pints 7 pints** Ada buys 3 pounds 8 ounces of ham and 4 pounds 2 ounces of cheese for a

    asked by Anna-Belle
  42. Math

    Write an Equation of the line if x intercept is -2 and is parallel to the line 6x + 3y - 5 = 0

    asked by r
  43. Geometry

    what would the equation be for something like this? If 2 pencils cost .75, how many pencils can you buy for 8.50?

    asked by Anonymous
  44. Chemistry

    Reactions in bomb calorimeters occurs at constant volume while the coffee cup calorimeter has reactions occurring at constant pressure. If one was to perform identical experiments in both of these instruments (one at constant volume and the other at

    asked by Anonymous
  45. pysics

    Suppose I hold a 5 pound weight with my arm extended parallel to the ground holding the weight stationary for 15 minutes. What is the work done on the weight ? Explain why this answer seems illogical compared to what you “feel” is going on.

    asked by Anonymous
  46. geography

    What is the capital of the country that possess the Canary Islands off the coast of Africa? Spain ??? Capital Madrid??

    asked by nicole
  47. math

    If you roll a 6-sided die 90 times, what is the best prediction possible for the number of times you will roll an odd number?

    asked by kate
  48. chemistry

    What kinds of lab techniques could you cite in your conclusion with a molarity lab? When determine what molarity is correct.

    asked by John
  49. English

    1. The letter on the table is yours. 2. A letter on the table is yours. [#1 is correct? What about #2?] 3. He kept singing the song. [In this sentence, what is the part of speech of 'kept'? Is 'kept' a transitive verb? And is 'singing' the object of the

    asked by rfvv
  50. English

    Thank you for your help. I'd like to post questions related to prepositional phrases which sometimes ambiguous. 1. He has made coffee for all of us. 2. Please boil enough rice for ten people. 3. Won't you play a Beethoven sonata for me? 4. We must choose

    asked by rfvv
  51. Math

    "It takes Nadia 4/9 h to complete her Language Arts homework and 2/9 h to complete her mathematics homework. Which takes longer? How much longer?" I don't understand what I'm supposed to do... Somebody please explain >_

    asked by min yoonghy
  52. English

    1. What kind of house do you live in? 2. What kinds of houses do you live in? 3. What kind of houses do you live in? [#1 and #2 seems to be correct. What about #3? Here the singular noun 'kind' is used. Is this one correct?]

    asked by rfvv
  53. English

    1. To what extent is the nuclear risk acceptable? 2. The nuclear risk is acceptable ___ ______. [the structure is preposition + noun phrase] [Which words can we put in the two blanks?]

    asked by rfvv
  54. MAth

    The sides of a triangle are 15cm, 20cm, and 28cm. How long are the segments into which the bisector of the largest angle separates the opposite side?

    asked by Raquel
  55. English

    1. To what extent are you concerned? 2. I am concerned about the matter to the full. 3. I am concerned about the matter on a small scale. [Are the answers correct? The propositional phrases at the end are adverb phrases, aren't they?]

    asked by rfvv
  56. physic

    The vectors that are shown in the figure below. The magnitudes are F1 = 1.81f, F2 = f, and F3 = 2.00f, where f is a constant. Description of the figure--On the first quadrant the angle is 60 degree with F3 as the hypotenuse and on the second quadrant the

    asked by joy
  57. Math

    Given triangleABC proportion to trianglePQR. If AB=4cm, BC=6cm, AC=9cm, and QR=4cm, find the perimeter of trianglePQR. What is the ratio of similitude?

    asked by Raquel
  58. Physics

    A body weighing 980N is moving with constant speed of 5 m/s on a horizontal surface. The coefficient of sliding friction between the body and the surface is 0.25. What horizontal pull is necessary to maintain the motion?

    asked by Anonymous
  59. Riddle

    spend balance 10 40 10 30 10 20 10 10 10 0 ------------------------ 50 100 now tell me how this possible

    asked by Siri
  60. Math

    What should be the value of x so that the ratios 4:10 and x:12 will form a proportion

    asked by Raquel
  61. Geometry

    Two sides of a triangle are 8cm and 12cm long, and the altitude to the 8-cm side is 9cm. How long is the altitude to the 12-cm side?

    asked by Raquel
  62. social science

    who kill to Mahatma Gahandi

    asked by arnav
  63. Math

    If a 6-foot man has a shadow of 9 feet, how long a shadow would a 20-foot pole have?

    asked by Raquel
  64. Anatomy

    Which cell is responsible for developing antibodies for a specific antigen? A. Helper T cells B. Plasma cells C. Memory B cells D. Cytotoxic T cells B

    asked by Dog
  65. Anatomy

    Which of the following is a gas exchange region of the lungs? A. trachea. B. terminal bronchiole. C. respiratory bronchiole. D. mainstream bronchus. C

    asked by Dog
  66. math

    The length of a rectangular room is two feet less than three times its width. The area of the rectangle is 176 square feet. a) Write an algebraic equation to model this problem. b) Solve the equation to find the dimensions of the rectangle.

    asked by Aspen
  67. Science


    asked by Momo