Most popular questions and responses by Alisha
  1. chemistry

    H2So4+NH4OH Find the complete ionic equation Find the spectator ions Find the net ionic equation I feel like my answer is wrong i tried CIE: 2H+(aq)+So42-(aq)+2H4+(aq)---> 2NH4+(aq)+So42-(aq)+H2o (l)

    asked on February 24, 2015
  2. Math

    Whom should you see at the bank if you need to borrow money?

    asked on April 13, 2011
  3. Math

    Regular quadrilateral prism has an altitude h = 11 cm and base edges b=8 cm. Find the sum of all edges.

    asked on April 17, 2017
  4. Math

    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 on April 25, 2017
  5. chemistry

    When the iron(II) ammonium sulfate was mixed with the ferrocyanide ion, the precipitate was initially white but turned blue upon exposure to air. What happened to iron(III) ion when the precipitate turned blue?

    asked on October 21, 2012
  6. Chem

    Suppose you have Avogadro\'s number of mini marshmallows and use them to cover the state of California which has a land area of 1.560 × 105 mi2. Each mini marshmallow has a diameter of 0.635 cm and a height of 2.54 cm. Assuming the marshmallows are packed

    asked on September 3, 2016
  7. la

    How are the characters Jack and Algernon developed through the use of dialogue? How are these characters similar? How are they different? Support your answer with evidence.

    asked on May 26, 2016
  8. Chemistry

    How do you write the chemical equation of the dissociation of nicotinic acid, C5H4NCOOH, in water?

    asked on January 13, 2013
  9. Physics

    An electron in an electron beam experiences a downward force of 2.0 x 10^-14 N while traveling in a magnetic field of 8.8 x 10 ^-2 T west. The charge on a proton is 1.60×10^−19. a) What is the magnitude of the velocity? Answer in units of m/s

    asked on October 16, 2014
  10. Physics

    A man walking on a road at 3km/hr encounters rain falling vertically at 18km/hr. At what angle should he hold the umbrella to protect himself from rain?

    asked on October 27, 2016
  11. Chem

    Assuming 100% dissociation, calculate the freezing point and boiling point of 2.45 m Na2SO4(aq). Constants may be found here sites. google. com/site/chempendix/colligative.

    asked on October 19, 2016
  12. Math

    From the top of a cliff 120 m above the water, the angle of depression of a boat on the water is 18 degrees. How far is the boat from the cliff?

    asked on December 8, 2011
  13. math

    After 20 years, 100 shares of stock originally purchased for $1000 was sold for $5,000. What was the yield on the investment? Choose the closest answer. 19% 5% 12.7% 8%

    asked on July 24, 2008
  14. Science

    The Millennium Force is the highest roller coaster in North America. It reached a maximum height to 94.5 m. The total mass of the roller coaster car and its passengers is 1380 kg. The speed of the roller coaster is 41.1 m/s at its lowest point on the

    asked on June 1, 2017
  15. Math

    You are given 9 to 1 odds against rolling a sum of 8 with the roll of two fair dice, meaning you win $9 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game.

    asked on September 30, 2012
  16. physics

    An 800 kg police boat slows down uniformly from 50 km/h [E] to 20 km/h [E] as it enters a harbour. If the boat slows down over a 30 m distance, what is the force of friction on the boat? (Hint: You will need to convert the velocities into m/s.)

    asked on July 15, 2014
  17. quadratics

    Write the function f(x) = ax^2 + bx + c in completed square form. SHOW YOUR WORK!!!

    asked on March 3, 2019
  18. Physics

    You toss a ball from your window 8m above the groun. When the ball leaves your hand, ut is moving at 10m/s at an angle of 20 degree below the horizontal. How far horizontally from your window will the ball hit the ground? Ignore air resistance. Plz answer

    asked on October 27, 2016
  19. HISTORY PLEASE HELP!!!!!!!!!!

    *** = my answer choice. 1. Which of the following best describes the Klu Klux Klan during Reconstruction? A. a gun club for former Confederate Soldiers. B. a secret political terrorist organization. C. a social group whose members masqueraded in sheets and

    asked on March 3, 2016
  20. Chem

    A hypothetical molecule, X–Y, has a dipole moment of 1.76 D and a bond length of 151 pm. Calculate the percent ionic character of this molecule.

    asked on September 29, 2016
  21. Chemistry

    The combustion of benzoic acid releases 26.38kJ/g and is often used to calibrate a bomb calorimeter. the combustion of 1.045 g of benzoic acid caused the temperature of the calorimeter to rise by 5.985C. Useing the same calorimeter, a sample of 0.876g of

    asked on October 4, 2012
  22. Statistics

    A comparison is made between two bus lines to determine if arrival times of their regular buses from Denver to Durango are off schedule by the same amount of time. For 51 randomly selected runs, bus line A was observed to be off schedule by an average time

    asked on July 11, 2012
  23. chem

    How long would it take for 1.50mol of water at 100.0 degrees to be converted completely into steam if heat were added at a constant rate of 23.0J/s?

    asked on March 31, 2009
  24. English

    I like Jorge Luis Borges' essay 'The Wall and the Books,' but I like his book Collected Fictions better. Which word or phrase in the sentence needs to be in italics? A. I like Jorge Luis Borges' B. Collected Fictions C. 'The Wall and the Books' D. but I

    asked on April 17, 2019
  25. Chemistry! Test tomorrow, pls help !

    we're given the equation: C6H6(l)+Br2(l) --> C6H5Br(l)+HBr(g) you need to prepare 50.0g pf bromobenzene and you expect no more than a 75% yield. How much benzene should you begin with if the yield is 75%. i know that % yield = (actual/theoretical) * 100 %

    asked on October 4, 2012
  26. mathhelop

    A hot-dog stand owner makes a profit of $100 when he sells 90 hot dogs a day. He has a loss of $30 when he sells 25 hot dogs a day. Write a linear equation that represents his profit? No idea what I am supposed to do.

    asked on June 17, 2017
  27. Physics

    A coil is wrapped with 200 turns of wire on the perimeter of a square frame of sides 20.5 cm. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 2.01 Ω. A uniform magnetic field is turned on perpendicular to

    asked on October 23, 2014
  28. 6th grade

    Use an integer to represent each situation. earned $100 800 ft gain in elevation 12 below 0 c 4 above 0 F a debt of $25 lost 5 pounds

    asked on April 29, 2009
  29. Math

    Find acute angle when m=-2/3

    asked on November 11, 2018
  30. chemistry

    When a 0.5725 g sample of Lysol was titrated with 0.100 M NaOH, and endpoint was obtained at 15.00 mL. What is the percent of HCL in the lysol sample?

    asked on June 21, 2010
  31. English

    Did you see that car accident?! Is the punctuation correct?

    asked on December 21, 2018
  32. Chemistry Help!

    Anthracene which contains only Carbon and hydrogen, is an important source of dyes. When 250 mg of anthracene is burned in pure oxygen, 8.64 mg of CO2 and 1.26 mg of H2O are formed. What is the empirical formula of anthracene?

    asked on October 4, 2012
  33. trig

    Mr. Saurik proposed that the function h(t) = 6sin(3pi(t) - pi/3) + 5, where h(t) is in meters and t is in seconds, models the height above the ground of a point on a spinning wheel. Is Mr. Saurik's equation plausible? Explain.

    asked on December 3, 2011
  34. Algebra

    A gardener is making a planting in the shape of a trapezoid. It will have 41 plants in the front​ row, 37 in the second​ row, 33 in the third​ row, and so on. If the pattern is​ consistent, how many plants will there be in the last​ row? How many

    asked on November 30, 2016
  35. math

    An empty bucket is put under two faucets. If one faucet is turned on alone the bucket fills in 6 minutes. If the other faucet is turned on alone the bucket fills in 4 minutes. If both are turned how many seconds will it take to fill the bucket?

    asked on January 7, 2013
  36. English

    I’m at the tourist centre in Boston the speakers tone can best be described as

    asked on September 29, 2017
  37. MATH

    ABCD is a rectangle and line DX and DY and XY are drawn where X is on AB and Y is on BC.the area of the triangle BXY is 4 ,area of triangle AXD is 5 and area of triangle CYD is 3.determine the area of the triangle DXY.

    asked on August 12, 2016
  38. science

    why does mold grow faster in warmer temperature

    asked on February 22, 2010
  39. Gloabl History

    What were the cause of the Korean War?

    asked on February 8, 2012
  40. social

    Why is trade necessary?

    asked on February 19, 2019
  41. Chem Equation

    In a lab expirement you add copper(II)nitrate to pure zinc. Write a balanced equation for this expirement and predict if a reaction will occur. Zinc is more active than copper, so zinc will donate electrons to the copper ions, precipating it as copper.

    asked on January 4, 2007
  42. Physics

    A river flows from south to north at 5km/hr. On this river a boat is heading east to west perpendicular to the current at 7km/hr. As viewed by an eagle hovering at rest over the shore, how fast and in what direction is the boat travelling?

    asked on October 27, 2016
  43. Calculus

    Please simplify the expression: 2log(base 4)9 - log(base 2)3

    asked on July 8, 2015
  44. Chemistry

    11.4mL of 0.7 M NaOH was used to titrate 5.0mL hydrochloric acid. What is the molarity of the acid? a) 0.3 b) 1.6 c) 3.9 d) 5.0 e) 8.1 Can someone answer this question and explain how to get the answer?

    asked on January 27, 2013
  45. Algebra

    An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

    asked on November 4, 2012
  46. physics please help

    Three point charges, 5.6E-6, 2.2E-6, and -3.0E-6, lie along the x-axis at 0.00 m, 0.031 m, and 0.059 m. What is the force exerted on q1 by the other two charges? What is the force exerted on q2 by the other forces? And what is the force exerted on q3 by

    asked on March 22, 2011
  47. Science

    1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid state, approximately what would it's volume be? Would this wax float or sink in water? Explain. 2) A tin box ( Mass of 80g, Volume

    asked on March 8, 2011
  48. Sci

    My hypothesis for "Can Water Be Split Into Hydrogen and Oxygen?"

    asked on June 13, 2010
  49. religon

    Who was the faters of the following isaac and Ishmael cain and able jehoshaphat nimrod absalom and soloman samuel lot esau and jacob joseph and his bothers david simeon peter ephriam and manasseh racheal and leah moab samson joshua jesse johnathan rehoboam

    asked on June 13, 2009
  50. Microeconomics

    Give Three Examples of how savings can be channeled into productive investment?

    asked on December 3, 2015
  51. math (urgent)

    A basketball or some stadium holds 20000 people. On average 140000 come to see the match. Average ticket price is $75. market research shows that if ticket price is decreased by $5 800 more people buy tickets. Find the price that will maximize revenue and

    asked on April 1, 2015
  52. General Math

    I am so confused can anyone help me understand which one is correct and why.... Beta is estimated as the slope of a regression line fit to pairs of periodic returns, (rx, ry), where: rx is the return for a market index such as the S&P 500 Index. rx is the

    asked on July 21, 2013
  53. Calculusss ( pleassee someboddy heelp )

    an airplane flying due east at 400 km/h pasess over an airport 12 minutes before a second plane flying south 30 degrees west at 500 km/h.if the airplanes are at the same altitude how fast will they by seprating when the seccong plane is over the

    asked on March 18, 2011
  54. math

    what is the property of this equation (14+8)+17=14(8+17)

    asked on March 1, 2010
  55. Math

    Write the opposite of each integer. -10 -21 14 0 13 -8 150 -1

    asked on April 29, 2009
  56. math 2 questions need help

    At age 5, how much would you have to save per month to have $1 million in your account at age 65, if your investment rate was 10% per year? Assume no taxes and compounding on a monthly basis. $213.30 $21.23 $274.60 can't be done with these assumptions.

    asked on July 24, 2008
  57. Science

    How does one read a cladogram?

    asked on December 8, 2017
  58. Math

    Peter has 12 baseball cards he traded 1/3 of his cards with his cousin and 1/4 of his cards to tyrell how many cards did he keep

    asked on May 9, 2017
  59. math

    lara arranged the books in her bookshelf by size. 2/10 of the books were tall and 1/2 of the books were medeium sized. If 12 of the books were small, how manyu total books did she arrange?

    asked on April 13, 2010
  60. math

    Solve the system:4x+2y-13=0 and 3x=5y+26 by elimination. 3 (4x+2y-13=0) 12x+6y-26=0 4 (3x=5y+26) 12x=20y+104 I need to subtract since the signs are the same: 12x+6y-26=0 Since they don't match up, I'm having trouble subtracting them. I'm not sure what to

    asked on June 3, 2017
  61. algebra

    Joy is planning a party. One game she decides to play is bobbing for apples. She divides her apples into three amounts, thinking that putting a different number in each same-sized bucket might make ti more fun. Three friends are helping her. Joy puts 1/2

    asked on May 21, 2015
  62. Chemistry

    What is the theoretical molarity value of HCL

    asked on June 19, 2011
  63. chemistry

    What are the final products when CaCl2 x 2H20 are heated strongly?

    asked on June 14, 2010
  64. Sci

    Whats My hypothesis for "Can Water Be Split Into Hydrogen and Oxygen?"

    asked on June 13, 2010
  65. U.S. History

    A drawback to using the "collegial" approach to manage the White House staff is that it: 1.forces staffers to compete against each other or 2. can produce "groupthink" by encouraging staffers to find common ground. isn't the correct answer 2? Thanks for

    asked on January 23, 2007

    Imagine you have a light bulb and battery conductivity tester. You are given a dilute solution of copper sulfate and a dilute solution of vinegar, acetic acid. Coppersulfate is an ionic compound. You may recall acetic acid reacts with water to produce ions

    asked on January 9, 2007
  67. Chemistry

    aluminum hydroxide is decomposed to form aluminum oxide and water. if 2.23 moles of water are formed then how many of aluminum oxide are formed. how many grams of aluminum hydroxide must have been.decomposed?

    asked on May 25, 2016
  68. Statistics

    What is the lowest z-value for the highest 2% of observations on the standard normal distribution?

    asked on April 22, 2015
  69. chemistry

    H2So4+NH4OH Find the complete ionic equation Find the spectator ions Find the net ionic equation I feel like my answer is wrong i tried CIE: 2H+(aq)+So42-(aq)+2H4+(aq)---> 2NH4+(aq)+So42-(aq)+H2o (l)

    asked on February 24, 2015
  70. Chemistry

    I need to write the equation for the neutralization reaction of NaOH and nicotinic acid (C5H4NCOOH). Here is my attempt: C5H4NCOOH + NaOH → C5H4NCOONa + H2O First of all, is the formula for nicotinic acid correct? I am finding mixed answers when I search

    asked on January 13, 2013
  71. chemistry

    I need to calculate the density, with work shown. 50.0 mg of a gas which occupies a volume of 0.0064 L ?

    asked on October 7, 2010
  72. math

    What sinking fund payment would be required at the end of each three-month period, at 8% interest compounded quarterly, in order to amount to $20,000 within five years?

    asked on September 23, 2010
  73. chemistry

    write the reaction for the dehydration of CuSO4 . XH20?

    asked on June 14, 2010
  74. world history

    what created inflation during the war (world war 1) how was money raied to pay for the efforts?

    asked on October 7, 2009
  75. relgion

    who was cain and able fathers

    asked on June 13, 2009
  76. 6th grade

    Write the opposite of each integer -10 -21 14 0 13 -8 150 -1

    asked on April 29, 2009
  77. Calculus

    Find all solutions of the equation correct to three decimal places. (ex: 0.617 or -1.764) x^3=3x-3

    asked on September 24, 2015
  78. Math

    A television company agrees to establish a community antenna in a new suburb at a charge of $5 each for 1000 subscribers or less.To encourage more subscribers,it is agreed to give a discount of $ 0.10 to each subscriber for every additional 10 subscribers

    asked on April 1, 2015
  79. MATHS

    Each Sunday the hymns to be sung are displayed on a hymn-board using numbered cards. The cards have the digits 0 to 9 on them. The hymn book has 750 hymns in it. Three different hymns are sung each service. a) What is the smallest number of cards the

    asked on November 1, 2014
  80. physics

    In 10 seconds a car accelerates 3m/s^2 to 90m/s. How fast was the car going before it accelerated?

    asked on September 29, 2014
  81. Coordination Chemistry

    A particular metal ion octahedral complex has the same number of unpaired electrons (non-zero) whether the complex uses weak or strong field ligands. List several fourth period transition metal ions that could have this behavior. Also, if someone could

    asked on December 1, 2012
  82. computers

    explain the scope of 6th sense technology in upcoming input & out\put devices

    asked on June 11, 2012
  83. Math

    What is x to the fourth power minus 20x plus 64 equals 0

    asked on March 9, 2011
  84. Grade 10 Science

    Why is the name for the ionic bond FeS Iron (II) Sulphide when the charges on iron and sulphur are +2 and -2? Shouldn't the name be Iron (I) Sulphide? Same goes for Copper (II) Sulphide. Please explain!

    asked on February 15, 2011
  85. chemistry

    How many grams of Al will react with 3.00 mol of 0(2)?

    asked on September 26, 2010
  86. math

    What would be the monthly payment on a $90,000 mortgage at a rate of 7.5% interest for 30 years?

    asked on September 23, 2010
  87. chemistry

    What is the ph of a 0.00100 M HCl solution?

    asked on June 21, 2010
  88. Math

    How Do You Solve this: 158=8p+14

    asked on April 25, 2010
  89. Math

    can you please check my answers evaluate (-5a)^2 and -5a^2 when a =5 625 for both 1-12.64=-11.64 (-14)/(-7)=2 using multiplying by 1to find an expression equvialnt to 18/19 with a denomanator of 171z?dont simplfy type a fraction one day the temperture

    asked on November 8, 2009
  90. math

    Describe two diferent real-life situations that canbe represented by the integer-9. Match each integer with a point on the number line. M N P Q ___________________________ -6-5-4-3-2-1 0 1 2 3 4 5 6 -3 5 1 -4 I really don't understand this. PLEASE HELP ME!

    asked on April 29, 2009
  91. chem

    If pentane,hexane and hexanol are heated evenly at different altitudes, rank them according to the order in which you would expect them to begin boiling.

    asked on March 29, 2009
  92. Science

    Moonglow Resturant's income for 1 week is $2900. If meals average $6, how many meals were served during the week?

    asked on September 15, 2008
  93. Math

    Greg needs 234 feet of baseboard to finish trimming the floors in his house. He has 145 3/4 feet of baseboard. How much baseboard does he need to buy? 233 4/4 - 145 3/4 _________ 88 1/4 Am I working this correct? Yes. That is right! :-) Yes..... I have

    asked on February 23, 2007
  94. chemistry(water molecules)

    What does a water molecule look like (the shape)and what atoms does it contain? Also why are water molecules polar molecules? A water molecule contains two hydrogens and one oxygen between them. However, the 3 atoms are not in a straight line - the

    asked on January 4, 2007
  95. writing

    What should i do to improve my writing? give me suggestion please.

    asked on February 19, 2016
  96. math

    you decide to dye your hair in various colors. If you die 1/3 of it blue , 1/4 pink and 1/4 of it black how much of your original hair is left?

    asked on June 1, 2015
  97. maths

    The area of a rectangular field is 96m2. The length of one side is 12m. The farmer needs to know the perimeter to find out how much fencing will be?

    asked on December 1, 2014
  98. URGENT Chemistry Question!

    This might be a silly question, but... Is 6-8 on the pH scale considered neutral? If so, 6.23 pH is neutral and 8.78 should be considered basic. Is this correct?

    asked on January 14, 2013
  99. Algebra

    An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

    asked on November 4, 2012
  100. Math- Trig

    In an oblique triangle ABC, A=30 degree, and the perpendicular from C to AB is 12 inches long. Find the length of AB.

    asked on December 8, 2011


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