Most popular questions and responses by Emily
  1. Chemistry

    Write a balanced net ionic equation (include physical states) for the following reaction: Fe(NO3)3(aq) + LiOH(aq) → LiNO3(aq) + Fe(OH)3(s)

    asked on June 27, 2011
  2. science

    A simple model for a person running a 100m race is to assume the sprinter runs with constant acceleration until reaching top speed, and then maintains that speed through the finish line. If a sprinter reaches their top speed of 11.2ms-1 in 2.15s, what will

    asked on September 4, 2012
  3. first additional language

    how did youth day came?

    asked on May 19, 2013
  4. Honors Chemistry

    "How many grams of NH3 can be produced from the reaction of 28 g of N2 and 25 g of H2? N2 + 3H2 ---> 2NH3 ==> 28 g N2 x (1 mol N2/14.0 g N2) x (2 mol NH3/1 mol N2) x ( 17.0 g NH3/ 1 mol NH3) = 68 g NH3 25 g H2 x ( 1mol H2/2.0 g H2) x (2 mol NH3/3 mol H2) x

    asked on November 8, 2009
  5. Physics

    Determine the stopping distances for an automobile with an initial speed of 95km/h and human reaction time of 1.0s: (a) for an acceleration a= -5.2m/s^2 (b) for a= -6.7m/s^2

    asked on July 10, 2011
  6. Physics

    Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s. What is the net force acting on the body?

    asked on January 25, 2012
  7. Math

    A bag contains 6 red marbles, 3 white marbles, and 7 blue marbles. You pick a marble without looking. Find the probability of drawing a white marble. Can someone please explain how I would work this out?

    asked on May 21, 2018
  8. Math

    Jill said that an angle is made of any two rays. Is she correct? Explain

    asked on April 8, 2015
  9. Calc BC

    Figure out the 35th derivative for xsinx. You have to do a few derivatives by hand to figure our a pattern and then predict the 35th one

    asked on September 11, 2013
  10. Physics (check)

    A merchant in Katmandu sells you a solid gold 1-kg statue for a very reasonable price. When you get home, you wonder whether or not you got a bargain, so you lower the statue into a measuring cup and measure its volume. What volume will verify that it's

    asked on May 18, 2008
  11. Physics

    The brakes of a truck cause it to slow down by applying a retarding force of 8740 N to the truck over a distance of 1130 m. What is the work done by this force on the truck?

    asked on November 14, 2012
  12. physics @ elena

    can you please help me with this one At serve, a tennis player aims to hit the ball horizontally. part a)What minimum speed is required for the ball to clear the 0.90m--high net about 15.0m from the server if the ball is "launched" from a height of 2.50m ?

    asked on April 22, 2012
  13. Chemistry

    A sample of argon gas at STP occupies 56.2 liters. Find the number of moles of argon and the mass in the sample

    asked on April 27, 2013
  14. Chemistry

    Consider the following hypothetical aqueous reaction: A (aq)-->B(aq)}. A flask is charged with 0.065 (mole) of A in a total volume of 100.0 (mL}. The following data are collected: Time (min) 0 10 20 30 40 Moles of A .065 .051 .042 .035 .031 Calculate the

    asked on February 9, 2012
  15. Math

    An auditorium has 50 rows of seats. The first row has 20 seats, the second row has 21, the third row has 22 seats, and so on, each row having one more seat than the previous row. How many seats are there all together? a. write 2 different expressions for

    asked on October 29, 2010
  16. Chem

    The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.265 M solution of dichromate to reach the equivalence point. What is the molarity of the iron(II) solution?

    asked on September 30, 2015
  17. Calculus

    A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder. An industrial tank of this shape must have a volume of 1600 cubic feet. The hemispherical ends cost twice as much per square foot of surface area as the sides. Find

    asked on November 3, 2016
  18. English

    According to the speaker in "Mending Wall" by Robert Frost, why does the neighbor feel that good walls make good neighbors? A. They create a barrier from having to talk to one another often. B. They maintain privacy and prevent meddling. C. They physically

    asked on January 26, 2017
  19. physics

    a 75 kg person escapes from a burning building by jumping from a window 30 m above a catching net. Acceleration due to gravity is 9.81 m/s^2. Assuming air resistance is simply a constant 96 N force on the person during the fall, determine the person's

    asked on October 11, 2011
  20. English grammar

    In the following sentence identify the function of the infinitive (phrase). Is it too expensive to travel to Europe? My list of answers contains: Adverb, subject, direct object, adjective, object of preposition, and predicate noun. I chose predicate noun.

    asked on July 21, 2015
  21. Physics

    This is how the problem starts out: A meter stick is placed with the fulcrum at the 50-cm mark. If a 120-g mass is placed at the 25-cm mark and a 25-g mass at the 10-cm mark, where should a 500-g mass be placed to balance the system? I thought that since

    asked on December 6, 2007
  22. French

    Is the word 'maths' masculine or feminine?

    asked on September 29, 2008
  23. English

    Can someone help me with this? Thank you! Prompt A: Compare and contrast the topics and themes of writers from the Americas and European writers. Include specific examples to support your statements.

    asked on December 4, 2014
  24. Reading Skills

    This question is based on the following information about The Call of the Wild, a book by Jack London. The Call of the Wild is a story about a dog named Buck. Buck is a pampered dog who lives with a wealthy family in southern California. During the Gold

    asked on April 2, 2014
  25. Chemistry

    net ionic equation of Na2CO3+2HC2H3O2-->CO2+h2o+2Na2H3O2

    asked on September 1, 2010
  26. College Math - Quantitative Reasoning

    Hello, I could really use some help with this problem. If the national economy shrank at an annual rate of 7​% per year for three consecutive​ years, then the economy shrank by 21​% over the three​-year period. - Of course, I understand 7% would be

    asked on January 16, 2017
  27. chemistry

    If I use 0.524g of Mg to react with 60.0mL of 1.0M H+. The density of H+ is 1.00 g/mL, and the specific heat capacity equals what water's is. The Final and Initial temp. are 65.8 and 22. Mg(s) + 2H+(aq) ----> Mg2+(aq) + H2(g) so to find the deltaH of this

    asked on March 22, 2011
  28. chemistry

    A major component of gasoline is octane C8H18. When octane is burned in air, it chemically reacts with oxygen gas O2 to produce carbon dioxide CO2 and water H2O. What mass of octane is consumed by the reaction of 8.8g of oxygen gas? Round your answer to 2

    asked on August 9, 2016
  29. Geometry probability

    Betty picks 4 random marbles from a bowl containing 3 white, 4 yellow, and 5 blue marbles. The probability that exactly 1 of the 4 marbles drawn is blue is _____ (I know that the probability is 5/12 and that simplifies to 0.4166 but that is not one of the

    asked on January 24, 2017
  30. Science

    Calculate the quantity of energy required to change 3.00 mol of liquid water to steam at 100°C. The molar heat of vaporization of water is 40.6 kj/mol

    asked on March 25, 2013
  31. physics

    A crate sits on wooden horizontal surface (a wooden floor). The figure shows a top view of this looking down onto the crate (gravity would be acting into the page). Man one and man two apply forces F1 and F2, at angles of θ1 and θ2 respectively, with the

    asked on June 3, 2015
  32. Physics

    A partly-full paint can has 0.83 U.S. gallons of paint left in it. (a) What is the volume of the paint, in cubic meters? (b) If all the remaining paint is used to coat a wall evenly (wall area = 12 m2), how thick is the layer of wet paint? Give your answer

    asked on September 14, 2012
  33. Calc

    A buoy oscillates in simple harmonic motion as waves go by. The buoy moves a total of 3.5 feet from its low point to its high point and it returns to its high point every 10 seconds. What is the equation that describes this motion if it reaches its high

    asked on July 30, 2008
  34. Physics

    We study the three point charges shown in the figure. They are held at the corners of an equilateral triangle with ℓ = 0.9 m. What is the electric potential energy of the system of three point charges? Use for the three charges q1 = +2Q, q2 = −3Q, and

    asked on February 7, 2016
  35. Math

    Determine the equation of the parabola with roots 2+sqrt(3) and 2-sqrt(3), and passing through the point (2,5).

    asked on August 23, 2010
  36. Physics

    The place kicker on a football team kicks a ball from ground level with an initial speed of 8.30 m/s at an angle of 19.0° above the horizontal. How long is the ball in the air before it lands on the ground again? You may neglect air resistance.

    asked on February 26, 2017
  37. Ap Chem

    explain each of the following observations using principles of atomic stucture and/or bonding. a] potassium has a lower first-ionization engergy than lithium. b] the ionic radius of N3- is larger than that of O2-. c] a calcium atom is larger than a zinc

    asked on January 23, 2007
  38. Math grade 12

    A lighthouse with a rotating beam is located 500m south of a coastal cliff that runs west to east a) determine a relation for the distance from the lighthouse to the point the light strikes the cliff in terms of the angle of rotation x b) determine an

    asked on November 5, 2015
  39. Social studies

    The late 1400's through the early 1600's was a time of exploration and early settlement of several European colonies. Each European country had different reasons for their exploration and settlement, but all encountered Native Americans during their

    asked on January 25, 2019
  40. Trig

    A carousel with a 50-foot diameter makes 4 revolutions per minute. a) Find the angular speed of the carousel in radians per minute. b) Find the linear speed in feet per minute of the platform rim of the carousel.

    asked on April 1, 2012
  41. biology

    which of the following statements about enzymes is NOT true? A. enzymes work best at a specified pH B. all enzymes have the same shape as their substrates. C. enzymes are proteins D. the shape of an enzyme allows it to do its job. im pretty sure its A. Am

    asked on May 12, 2017
  42. Math

    Find the speed of a point on the rim of a 24cm diameter fly wheel which is turning at 2800 revolutions per minute. Give your answer in meters per second.

    asked on March 20, 2013
  43. Life sciences, Business studies,Maths lit and CAT

    With Life sciences, Business studies,Maths lit and CAT, what can I study after matric? Which career field should I follow?

    asked on May 21, 2014
  44. chemistry

    51.59 g of water at 82.6 oC is added to a calorimeter that contains 48.01 g of water at 40.9 oC. If the final temperature of the system is 59.4 oC, what is the calorimeter constant (Ccalorimeter) ? Use 4.184 J/goC for the heat capacity of water.

    asked on March 26, 2012
  45. Language arts

    1. reflect on the feedback you received from WriteToLearn about your autobiographical Narrative. (4 points) Which traits are strongest in your autobiographical narrative: ideas, organization, voice, word, choice, sentence fluency, or conversations? Provide

    asked on September 25, 2018
  46. Chemistry

    What will be the freezing point of a solution made by dissolving 5.25 g of naphthalene (C10H8) in 100.0 g benzene (C6H6?). The normal freezing point of benzene is 5.5°C and K f (benzene) is 5.12°C / m.

    asked on September 4, 2014
  47. Chemistry

    What is the molality of a solution of water and KCl if the boiling point of the solution is 103.07°C? (K subscript b equals 0.512 degrees C/m solution; KCl is an ionic compound right parenthesis A: .300 B: .600 C: 3.00 D: 6.00 I'm really confused as to

    asked on February 10, 2017
  48. American Government

    As the country has grown and evolved, so too has the Executive Office of the President and the independent agencies. Give FOUR specific examples demonstrating how the evolution of the executive branch has mirrored the evolution of the nation. Include at

    asked on March 18, 2017
  49. chemistry

    addition of a strong acid would increase the solubility of which of the following salts AgCl CaSO4 CdS CaCO3 PbBr2 CaHPO4 Cd(OH)2 AuCl

    asked on March 13, 2011
  50. Physics

    According to the Guinness Book of World Records (1990 edition, p. 169), the highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15 cm (5.9 in) long. Assume the speed quoted is that of the end of the rod. What is the centripetal

    asked on January 13, 2013
  51. poem by E.E. Cummings

    Can someone help me figure out what the meaning of this poem is? It's called "in Just-" and it confuses me. in Just- spring when the world is mud- luscious the little lame balloonman whistles far and wee and eddieandbill come running from marbles and

    asked on January 21, 2008
  52. calculus

    I needed help with these FRQ in my APCalc course. Any help or walkthrough would be extremely helpful - thanks in advance. Let f be the function given by f(x)=3ln((x^2)+2)-2x with the domain [-2,4]. (a) Find the coordinate of each relative maximum point and

    asked on December 1, 2014
  53. chemistry

    Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is 4.18 J/g°C, calculate

    asked on February 16, 2010
  54. Math

    1.which symbol completes the statement 3\8 - 1\4 a.> b.< c.= 2.which symbol completes the statement 5\8 - 11\16 a.> b.< c.= 3.which symbol completes the statement 4\6 - 6\9 a.> b.< c.= 4.order the following fractions from least to greatest

    asked on October 5, 2016
  55. Medical Reimbursement

    Dr. M is receiving reimbursement based on actual charges after the patient has been treated. She's being reimbursed on a A. retrospective, fee-for-service payment system. B. prospective payment system. C. indemnity system. D. usual, customary, and

    asked on May 2, 2014
  56. General Chemistry (Chem101)

    A chemist mixes two liquids A and B to form a homogeneous mixture. The densities of the liquids are 2.0514 g/mL for A and 2.6678 g/mL for B. When she drops a small object into the mixture, she finds that the object becomes suspended in the liquid; that is,

    asked on September 20, 2012
  57. Physics

    Two rugby players are running towards each other. They are 37 m apart. If one is accelerating from rest at 0.5 m/s^2 and the other was already moving at 3.1 m/s and maintains her speed, a)how long before they crunch together? b)How fast was the

    asked on October 2, 2010
  58. Math

    Given any right triangle with an acute angle theta, a) Explain why csc theta is always greater than or equal to 1 b) Explain why cos theta is always less than or equal to 1

    asked on October 8, 2010
  59. Math

    Points J and K, plotted on the coordinate grid, are two vertices of rectangle JKLM. Rectangle JKLM has an area of 7 square units. Point J is located at (2, 1) and point K is located at (-5,1) each vertex of the rectangle is located at a point that has

    asked on March 26, 2016
  60. Science

    Study the scenario. An object is at rest. At five seconds, someone comes over and pushes the object with a force of 3 N to the right. Which of the following choices describes the force needed to keep the object in static equilibrium? a. A force of 3 N to

    asked on September 12, 2018
  61. World History

    How are religion and culture connected in Ancient India and China? Please help, I'm so stuck on this!!

    asked on October 17, 2017
  62. 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 on April 23, 2017
  63. Physics

    Why is Young's experiment more effective with slits than with the pinholes he first used?

    asked on March 22, 2008
  64. math

    Okay. So i'm doing this project for my geometry class about different sports, soccer, baseball, basketball, bowling, golf, volleyball and pool. I have to find the surface area, volume, diameter, circumference, and radius of each of the balls. I got a

    asked on May 23, 2007
  65. Math

    CLIMATOLOGIST Each year a tree is alive,it adds a layer of growth,called a tree ring,between its core and its bark. A climatologist measures the width of tree rings of a particular tree for different years: YEAR: 1900:1910:1920:1930:1940 Width of

    asked on September 6, 2016
  66. math

    Find the surface area of the cylinder to the nearest whole number. The figure is not drawn to scale. 13 in on top, 14 in around/

    asked on April 29, 2015
  67. physics

    A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 214 m, and the car completes the turn in 40.0 s (Figure shows coordinate plane with point A on -y axis point C on

    asked on March 6, 2012
  68. Chemistry

    How many milliliters of .100 M HNO3 are needed to neutralize 58.5 mL of .0100 Al(0H)3?

    asked on February 17, 2012
  69. English

    I have a question its which diagram correctly represents this sentence? Sara, José, and Kenny were studying together for the test. How can I post a link to show you the diagrams?

    asked on October 13, 2014
  70. math

    Find all the values of x in the interval [0,2π] that satisfy the equation: 8sin(2x)=8cos(x)

    asked on September 13, 2012
  71. art/history

    which of the following is not an element of baroque or rococo architecture a movement b columns c ornamentation d minimalism

    asked on November 16, 2016
  72. math

    9. solve |4x + 3| = 9 + 2x and check for extraneous solutions. the first answer I got was: |4x +3| = 9 + 2x |4x| = 6 + 2x 2x = 6 x = 3 can someone help me find the other answer? thank you!

    asked on May 12, 2016
  73. Math

    A stained glass window has an area of 900 square inches. A. Once a window design is made of rectangular pieces that are 5 inches by 3 inches. How many stained glass pieces are used in the window? B. Another window design is made of square stained glass

    asked on April 23, 2018
  74. Reading Skills

    This question is based on the following four sentences. 1. Netta and Jim argued over their views of free trade. 2. Netta and Jim had different views on free trade. 3. Netta and Jim were sharply split over the issue of free trade. 4. Netta and Jim refused

    asked on April 2, 2014
  75. Math

    Find the missing length. Round to the nearest tenth of necessary. It is a right triangle with side a being 8 ft and side b being 21ft what is the length of the 3rd side? A 441 B 22.5 C 64 D 19.4* Am I right and please explain I am a little confused.

    asked on February 14, 2019
  76. Animal Farm

    According to Benjamin, what is the one unalterable law? How does his idea compare to actual conditions in the Soviet Union today? --------------------------------------------------------------------------------------- This is the passage this question is

    asked on December 7, 2008
  77. Chem

    There are two stable isotopes of Gallium Their masses are 68.92558 and 70.9247050 AMU. If the average atomic mass of gallium is 69.7231, what is the natural abundance of the lighter isotope? I don't know where to start!

    asked on September 20, 2012
  78. Math

    Use the related acute angle to state an equivalent expression: a) tan 110 degrees b)sin 350 degrees

    asked on December 4, 2010
  79. ap chem

    consider the molecules PF3 and PF5. b]is the PF3 molecule polar or is it nonpolar. explain C] on the basis of bonding principles, predict whether each of the following compounds exists. In each case explain your prediction. (i) NF5 (ii) AsF5 2. explain why

    asked on January 23, 2007
  80. Math

    C:\Users\Owner\Pictures\Graph.png Each square on this graph paper is 1/4 Scale: 1/4 inch = 18 inches What are the actual dimensions of the sofa in inches? a. 90x45 b. 90x36 c. 75x25 d. 80x30

    asked on November 15, 2013
  81. Physics

    A baseball player uses a pitching machine to help him improve his batting average. He places the 43.4 kg machine on a frozen pond. The machine fires a 0.0546 kg baseball horizontally at a speed of 44.8 m/s. What is the magnitude of the recoil velocity of

    asked on December 2, 2012
  82. Sport

    Why Olympia selected to hold at the ancient Olympic Games?

    asked on November 9, 2011
  83. analytical chemistry

    blank is used to dissipate the error brought about by impurities. What is the other reason of using blank in Mohr method?

    asked on November 5, 2010
  84. Math

    A company predicts that this years sales will be equivalent to 144% of last years sales. Which value represents 144%? A. 14.4 B. 1 11/25 C. 1.56 D. 14 4/5

    asked on April 9, 2015
  85. Physics

    A 80.0 N box of is pulled 20.0 m up a 30.0 Degree ramp by a force of 115 N, if the coefficient of kinetic friction between the box and the ramp is .22 what is the box's kinetic energy?

    asked on February 14, 2012
  86. Math

    Determine the 10th term of the sequence 3, 10, 28, 72, 176... State the general term.

    asked on November 15, 2010
  87. chemistry

    A 1.00L sample of a gas has a mass of 1.92g at STP. What is the molar mass of the gas? (This is a question on my chemistry worksheet, and I can't find the answer in my book.)

    asked on March 4, 2008
  88. Math

    In parallelogram DEFG m

    asked on April 12, 2011
  89. physics

    A record player is spinning at 32 rpm when the motor is switched off. After 6.8 seconds the angular speed has decreased to 20 rpm. Calculate the frictional torque if the record player can be treated as a solid wheel of mass 2.4 kg and radius 15 cm. A)

    asked on November 28, 2010
  90. Math

    As many 8cm diameter discs as possible are cut from a sheet of rectangular cardboard measuring 170cm by 90cm. Find the area of the sheet that is left.

    asked on March 20, 2013
  91. Math

    Q: Determine the sum of the first seven terms of a geometric series in which the first term is 11 and the seventh term is 704. ^Are there two answers, since the common ratio could be positive or negative?

    asked on January 25, 2011
  92. Trig

    A 7.25 inch circular saw blade rotates at 5200 revolutions per minute. a) Find the angular speed of the saw blade in radians per minute. b) Find the linear speed in feet per minute of one of the 24 cutting teeth as they contact the wood being cut.

    asked on April 1, 2012
  93. Chemistry

    if i place C6H14 and KI in a test tube, then some metal salt (MNO3) is added... If the M+ reacts with and oxidizes the I, What color is c6h14? I think its purple.. but im not sure why it would be that color .. :S .. care to explain please ? and if it

    asked on March 29, 2011
  94. Physics

    A 63-kg ice-skater glides with a speed of 10 m/s toward a 14-kg sled at rest on the ice. The ice-skater reaches the sled and holds on to it. The ice-skater and the sled then continue sliding in the same direction in which the ice-skater was originally

    asked on March 22, 2016
  95. Math

    Question: A tunnel with a parabolic arch is 12 m wide. If the height of the arch 4 m from the left edge is 6 m, can a truck that is 5 m tall and 3.5 m wide pass through the tunnel? Justify your decision. I drew the graph of the arch with x-intercepts (0,0)

    asked on August 19, 2010
  96. College Chemistry

    How much Ca(OH)2 is required to remove 90.0% of PO4^-3 from 7.5 times 10^6 L of drinking water containing 25 mg/l of PO4^-3?

    asked on February 17, 2012
  97. English

    In Into Thin Air by Jon Krakauer, what are some examples of allusions to Shakespeare, the Bible, fairy tales, or Greek myths?

    asked on August 27, 2011
  98. Business Communication

    In which of the following cases is the direct organization method most appropriate? a. asking your boss for an extension on an assignment. b. recommending a controversial change in departmental procedure to your boss, c . requesting a day off during your

    asked on November 19, 2014
  99. General Chemistry

    According to the following reaction, how many moles of Fe(OH)2 CAN FORM FROM 175.0 mL of 0.227 M LiOH soultion? Assume that there is an excess of FeCl2 FeCl2(aq)+ 2 LiOH(aq)-(Oh)2(s)+2LiCl(aq) I have no clue how to approach this problem? Could anyone help

    asked on December 17, 2010
  100. 12th grade English 4

    #1. "Something new." "Never been guessed before." "A very fresh note." The critics agreed there was something different going on here. Many books about war, some quite realistic, had already been written. First-person narration was not unusual. What was

    asked on August 1, 2014


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