Most popular questions and responses by Shelly
  1. Chemistry

    How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)

    asked on May 17, 2012
  2. Maths

    Amita wants to make a mold for a candle. She wants the shape of the candle to be rectangular prism with a volume of exactly 28 cubic cm. The answer for this question is given as 10 molds. Can you explain in detail how the answer is 10 to better understand.

    asked on March 31, 2016
  3. physics

    A car starts 200 m west of the town square and moves with a constant velocity of 15 m/s toward the east. a.Write the equation that represents the motion of the car. b.Where will the car be 10 minutes later? c.When will the car reach the town square?

    asked on June 7, 2013
  4. chemistry

    How many moles of sulfur are present in 2.9 moles of Al2(SO4)3

    asked on October 16, 2015
  5. physics

    several students are riding in bumper cars at an amusement park. the combined mass of a car A and its occupants is 250 kg. the combined mass of car B and its occupants is 200 kg. Car A is 15 m away from car B and moving to the right at 2 m/s when the

    asked on June 9, 2008
  6. college math

    a medical institution request 1 gram of bismuth-214 which has a half life of 20 min. How many grams of bismuth-214 must be prepared if the shipping time is 2 hours.

    asked on October 18, 2017
  7. English

    What is the irony in "Happy Event" by Nadine Gordimer?

    asked on October 6, 2009
  8. accounting

    List the following steps of the accounting cycle in their proper order a. Preparing the post closing trial balance b. postint the journal entries c. journalizing and posting adjusting entries d. preparing the adjusted trial balance e. journalizing and

    asked on October 16, 2007
  9. college math

    the half life of Uranium -238 is 4.5 billion years and the age of earth is 4.5 X 109 years. What fraction of Uranium-238 that was present when earth was formed still remains?

    asked on October 18, 2017
  10. Socials

    Why was Pharaoh so stubborn about setting the captives free? Please and thanks!

    asked on November 24, 2008
  11. Algebra

    Come up with a new linear function that has a slope that falls in the range -1

    asked on April 3, 2017
  12. algebra help

    I need help with this problem not understanding it. Give exact and approximate solutions to three decimal places. x^2+6x+9= 81 what are the exact solutions? x=___ There are no approximate solutions since the solutions are integers.

    asked on June 19, 2009
  13. math

    A machine packages bags of almonds. The weights of the bags are normally distributed with a mean of 14 oz and a standard deviation of 1.2 oz. Enter the z-score of a bag of almonds that weighs 12.2 oz. my answer: -1.5

    asked on December 6, 2016
  14. computer applications

    Microsoft word graded project lesson number...038189

    asked on January 6, 2014
  15. Geography

    State one characteristic of mid latitude cyclones that other types of cyclones do not have

    asked on January 13, 2017
  16. social studies

    identify five ways of developing the human resource

    asked on November 20, 2009
  17. physics

    a drinking fountain projects water at an initial angle of 50 degrees above the horizontal and the water reaches a maximum height of 0.150 m above the point of exit. assume air resistance is negligible. calculate the speed at which the water leaves the

    asked on June 9, 2008
  18. accounting

    in the blank space beside each adjustin entry, enter the letter of the explanation A through F that most closely describes the entry. A. to record this periods depreciation expense B. to record accrued salaries expense. C. to record this period's use of a

    asked on October 12, 2007
  19. Algebra

    Evaluate fraction numerator open vertical bar a minus 16 b close vertical bar over denominator open vertical bar a plus b close vertical bar end fraction when a = -10 and b = 3

    asked on October 31, 2016
  20. math

    A movie theater runs two films continuously. One film runs for 85 minutes and a second film runs for 100 minutes. Both movies begin at noon. When will the two films start again at the same time?

    asked on October 4, 2011
  21. math

    The number of marbles Marci has is 2/3 the number Tanya has. Together they have 40 marbles. How many marbles does Tanya have?

    asked on August 3, 2014
  22. math

    Estimating a cost function, high-low method. Reisen Travel offers helicopter service from suburban towns to John !@#$%^&ennedy International Airport in New York City. Each of its 10 helicopters makes between 1,000 and 2,000 round-trips per year. The

    asked on October 20, 2008
  23. Algebra

    what's the square root of 7/25? How do I figure it out? I don't think I can simplify the 7, but the 25 becomes a 5? but it wouldn't be 7/5?

    asked on June 8, 2011
  24. math

    A company will need $65,000 in 6 years for a new addition. To meet this goal the company deposits money in an account today that pays 5% annual intrest compound quarterly. Find the amount that should be invested to total $65,000 in 6 years. the company

    asked on December 1, 2014
  25. chemistry 12

    sketch a ph curve for the titration 40.00 mLof 0.100M hyrazine H2NNH2(aq) having a Kb of 3.0 x 10^-6 by 0.100 M HCIO4(aq)

    asked on October 13, 2011
  26. Physics

    X-rays are most similar to which of the following--alpha, beta, or gamma? I think gamma?

    asked on April 17, 2008
  27. physics

    an object moves in the -x direction at a speed of 30 m/s. As it passes through the origin it starts to experience a constant acceleration of 1.4 m/s^2 in the +x direction. How much time elapses before it returns to the origin?

    asked on February 8, 2019
  28. Math

    In an episode of the Andy Griffith Show, Mayberry resident Frank Myers almost lost his home to taxes owed. Luckily, Sheriff Andy Taylor found an old town bond that belonged to Frank. The bond's original value was $100 paying 8.5% interest compounded

    asked on November 26, 2017
  29. Physics

    An automobile of mass 2000 kg is driven into a brick wall in a safety test. The bumper behaves like a Hooke’s-law spring. It has an effective spring constant of 5 × 106 N/m, and is observed to compress a distance of 8.7 cm as the car is brought to rest.

    asked on December 3, 2012
  30. Physics!!!

    Question: A(n) 3.17 m long pendulum is released from rest when the support string is at an angle of 38.6 degrees with the vertical. The acceleration of gravity is 9.8 m/s2 . What is the speed of the bob at the bottom of the swing? Answer in units of m/s

    asked on December 2, 2012
  31. chemistry 12

    Calculate [H3O^-] in a 0.15M solution of benzoic acid, HC7H5O2(aq) having a Ka of 6.4 x 10^-5 I got. 6.4x10^-5=(x)(x)/0.15 6.4x10^-5= x^2/0.15 6.4x10^-5 x 0.15 = x^2 square root of 9.6x10^-6 = square root of x^2 x= 0.003098 The pH solution is -log

    asked on October 13, 2011
  32. SOC

    Aron: The two double A batteries in my CD player are dead, so the CD player doesn’t work. My television remote control, which also uses two double A batteries, works fine. So if I move the two batteries from my television remote control to my CD player,

    asked on February 20, 2011
  33. history

    According to the Constitution, the _________ government(s) has most of the power to regulate elections. national local interstate state state?

    asked on December 8, 2011
  34. chemistry 12

    Identify the two conjugate acid-base pairs in each of the following. a.) H2PO4-(aq)+HSO4-(aq) H2PO4(aq)+ SO4^-2(aq) b.) HI(aq)+ CN-(aq)HCN-(aq)+ I-(aq)

    asked on October 13, 2011
  35. Finance

    Wheel Industries is considering a three year expansion project. The project requires an initial investment of $1.5 million. The project will use straight line depreciation method. The project has no salvage value. It is estimated that the project will

    asked on April 22, 2010
  36. math

    I need help in solving this subtraction (0.06x^3-0.07x^2+0.04x)-(0.02x^3+0.07x^2-9)

    asked on May 10, 2009
  37. physics

    a 0.03 mol sample of helium is taken through a cycle. the temperature of state A is 400K. calculate V.

    asked on June 9, 2008
  38. physics

    A charge of -2q is placed a distance r from the origin and a charge of +2q is placed a distance 2r from the origin. What is the amount of work needed to move a charge of q to the origin from infinity? I don't get the question. And please explain to me how

    asked on March 23, 2008
  39. geometry

    An oval indoor running track with semicircular ends has the dimensions of 80' long, 34' wide, and the individual lane width is 5' wide. If the track is to be resurfaced how many square feet of material will be required? Help Please!

    asked on March 6, 2012
  40. gr 12 chemistry

    consider the two compounds, CH3CH2CH2CH2CH2OH and CH3CH2OCH2CH2CH3. Giving reasons for your choice, select the compound that a) will evaporate at a lower temperature b) has higher solubility in a non-polar solvent c) can undergo an addition reaction with

    asked on March 2, 2010
  41. Chemistry

    At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O? Tutor Answer: Use density = mass x volume to convert 50 g ethanol to

    asked on November 29, 2011
  42. government-pos110

    Which of the following is true regarding U.S. Senators? A.Senators are elected to 2 year terms. B.Senators can approve executive agreements. C.Each state has two Senators. D.Senators must be 25 years old. d sounds famaliar

    asked on November 15, 2011
  43. math - really easy

    in the local coed softball league, the male to female ratio is 6:6. If there are 160 players in the league, how many are female? I know the answer is 80. but how the heck do I set up the problem correctly?

    asked on October 19, 2009
  44. psychology

    Could the effect of being clinically depressed on the number of close friendships an individual has be studied in an experimental research design? I think not because the variables cannot be manipulated.

    asked on June 17, 2015
  45. Physic

    A lamp filament is made of tungsten. Why do we get a continuous spectrum rather than a tungsten line spectrum when light from an incandescent lamp is viewed with a spectroscope?

    asked on December 11, 2012
  46. physics

    a block of mass 2 kg and block B of mass 8 kg are connected by a spring of spring constant 80 N/m and negligible mass. The system is being pulled to the right across a horizontal frictionless surface by a horizontal force 4 N with both blocks experiencing

    asked on June 9, 2008
  47. math

    The length of a rectangle is 10 feet more than twice its width. The perimeter of the rectangle is 170 feet. Find the dimensions of the rectangle. ANS: Length= 60 feet, Width= 25 feet I already know the answer, its in my review sheet. If someone can explain

    asked on November 29, 2007
  48. accounting

    Identify whether a debit or credit yields the indicated change for each of the following accounts: a. To increase Store Equipment f. To decrease Unearned Revenue b. To increase Owner Withdrawals g. To decrease Prepaid Insurance c. To decrease Cash h. To

    asked on October 6, 2007
  49. physics

    A dust particle carrying a charge of is 2 mm to the left of another dust particle carrying a charge of . Find the magnitude and direction of the elec- tric force on the first particle.

    asked on March 5, 2014
  50. social studies

    which of the following do you consider to be more important in developing the human resource education or religion? Justify your answer

    asked on November 20, 2009
  51. Math

    Scott's salary decreased from $78,000 to $74,000. What is the absolute change in salary, and what is the relative change in salary. also New salary is what % less than his old salary. and New salary is what % of his old salary. and new salary is what times

    asked on October 15, 2017
  52. Technical Math (College)

    Question: The formula s=4.90t^2 gives the distance s in meters that a body falls in a given time t. Find the distance a ball drops in 4.2 seconds. Use the rules for multiplication of measurements in evaluating the answer.

    asked on January 20, 2016
  53. math

    I know the answer. I don't know how to get to the answer to this problem: The number of marbles Mari has is 2/3 the number Tanya has. Together they have 40 marbles. How many marbles does Tanya have? I know the answer is 24, but how?

    asked on August 3, 2014
  54. Chemistry

    Determine the boiling point(bp)of 0.44 m Naphthalene, C10H8, in Benzene, C6H6. kb(C6H6)=2.53, bp(C6H6)=80.1

    asked on February 11, 2013
  55. social studies

    which of the following do you consider to be more important in developing the human resource education or religion? Justify your answer

    asked on November 20, 2009
  56. Geography

    Compare and contrast the societies, governments and economies of both North and South Korea.

    asked on October 17, 2007
  57. math

    a car was purchased for $12,329 this year. Each year the value decreases 8%. write the exponential equation to model the situation

    asked on November 7, 2017
  58. science

    The lift curve of the airfoil of an aircraft is as shown. The weight of the aircraft is 1500 kg. If the stall speed of the aircraft is 60 m/s, determine the wing area.

    asked on October 11, 2015
  59. Math

    A group meeting is attended by 14 delegates. 9 of the delegates are from Atlantis and 5 of the delegates are from Zedonia. (a) In how many ways can the group choose 6 of the 14 delegates to form a negotiation panel? Show work. (b) In how many ways can the

    asked on March 8, 2014
  60. Pre cal

    determine the function f whose graph is given the vertex is (3,-13) and the y intercept is -4 how whould i work this out

    asked on January 30, 2014
  61. history

    The power of judicial review is found in Article I of the Constitution true or false true?

    asked on December 8, 2011
  62. math

    a company bought 50lb of kona beans at $34.95 per lb. and plans to mix these with colombian beans at $7.99 per lb. wholesale. If they want the blend to be $11.95 per lb, how many lbs of colombian beans should they buy?

    asked on April 11, 2011
  63. statistics

    Complete the hypothesis test: null hypothesis = 52, alternative hypothesis =

    asked on July 19, 2010
  64. math

    soybean is 16% protein cornmeal is 8% protein how much pounds should we mix together to get 320 lbs that is 10% protein

    asked on April 27, 2010
  65. gr.12 chem

    what is The relationship between the number of carbon atoms and the boiling points of the alkanes?

    asked on February 23, 2010
  66. chemistry

    a compound with the molecular weight of 276 grams was determined to be 39.10% carbon, 8.77% hydrogen, and 52.13% oxygen. what is the empiricial formula and the molecular formula for the compound? i do not know where to start! i worked it out and i got

    asked on November 28, 2009
  67. math

    I am having a problem solving these problems could you please help me! Simplify by removing the factor of 1, y^2-25/5-y, 4y-12/4y

    asked on May 23, 2009
  68. physics

    in an electron microscope, a tungstun cathode with work function 4.5 eV is heated to release electrons that are then initially at rest just outside the cathode. The electrons are accelerated by a potential difference to create a beam of electrons with a de

    asked on June 9, 2008
  69. Physics

    Two protons in an atomic nucleus repel each other, but they are also attracted to each other. Explain.

    asked on April 17, 2008
  70. accounting

    List the following steps of the accounting cycle in their proper order a. Preparing the post closing trial balance b. postint the journal entries c. journalizing and posting adjusting entries d. preparing the adjusted trial balance e. journalizing and

    asked on October 14, 2007
  71. accounting

    Classify the following adjusting entries as involving prepaid expenses(PE), unearned revenues)UR), accrued expenses(AE), or accrued revenues(AR). a. ____ to record revenue earned that was previouslu received as cash advance. b.___ to record annual

    asked on October 12, 2007
  72. Math

    You owe $300.00 on your credit card. Each month you fail to make a payment, your balance increases by 2%. how much will you owe after 2 years of missing payments?

    asked on October 17, 2017
  73. Math

    In 2016 there were ab out 135 million households in the United States. 36.5% of the households own at least one dog. On average, these households have 1.6 dogs. How many millions of pet dogs were in the United States. Round to the nearest tenth of a

    asked on September 26, 2017
  74. Math

    Drake has 5 baskets of fruit. Each basket has 12 plums and 14 apricots. How many pieces of fruit does Drake have in the baskets?

    asked on November 1, 2016
  75. algeba

    A ladder is leaning against a building. The base of the ladder is 8 feet from the wall, and the top of the ladder reaches 6 feet up the wall. How long is the ladder?

    asked on October 31, 2016
  76. Math

    How much money is 3/4 of $24 ?

    asked on August 4, 2015
  77. finacne

    cYou think that in 15 years it will cost $214,000 to provide your child with a 4-year college education. Will you have enough if you take $75,000 today and invest it for the next 15 years at 5%? d. If you can earn 5%, how much will you have to save each

    asked on October 27, 2013
  78. law of torts

    In order to prove that a product is unreasonably dangerous, a plaintiff's lawyer may: Hire an expert. Analyze the product warning. Demonstrate the product for the jury. Talk to other users of the product. All of the above. all the above? or hire an expert?

    asked on April 3, 2012
  79. Chemistry

    Zn + I2 ---> Zn ^+2 + 2I- will this reaction occur spontaneously?

    asked on November 7, 2011
  80. math

    8.33 x 10 to the negative power 46

    asked on March 14, 2011
  81. operations management

    Best Wheels Bicycle Company is looking to automate production of a framing component and will need to purchase new frame fabrication machinery. The company has narrowed the selection to 2 machines that have a useful life of 3 years. The company operates 8

    asked on February 25, 2011
  82. english

    Please help me pick out the adjectives in this paragraph. In the first two stanzas, Mr. Lowell emphasized the wealth of the dandelion by using several phrases suggesting riches, such as "harmless gold," "buccaneers," and "Eldorado." In the third stanza,

    asked on October 18, 2010
  83. Communication and Gender Studies

    Give an example of men in lecture mode and women being captive listeners. Secondly, provide an example of men and women using different listening signals.

    asked on June 27, 2010
  84. statistics

    Find the standard deviation using the rule of thumb for each of the data sets 57,61,57,57,58,57,61 61,52,69,64,46,54,47

    asked on March 26, 2010
  85. chemistry

    what is a simplified way of representing an organic compound by showing only rh carbon carbon bounds

    asked on December 8, 2009
  86. chemistry

    a compound with the molecular weight of 276 grams was determined to be 39.10% carbon, 8.77% hydrogen, and 52.13% oxygen. what is the empiricial formula and the molecular formula for the compound? i do not know where to start!

    asked on November 28, 2009
  87. Algebra

    Write the exponential form of the equation and solve the equation for x Let x = 1og_2 1/8

    asked on August 2, 2009
  88. algebra help

    Factor completely 4v^2+1-4v =____ another problem is factor completely 4s^2-81= ____

    asked on June 22, 2009
  89. math

    I need help solving this subtraction (xy-ab-3)- (xy-9ab-1) the answe is __ab-___

    asked on May 8, 2009
  90. French

    Does anyone know when you should add e's/s's to french verbs, and when you shouldn't? I understand the purpose, to make feminine or plural depending on what gender the subject is. But what types of verbs should you add the e's/s's to? Would you add them

    asked on December 18, 2008
  91. physics

    the focal length of this mirror is 6 cm and the object is located 8 cm away from the mirror. calculate the position of the image formed by the mirror. suppose the converging mirror is replaced by a diverging mirror with the same radius of curvature that is

    asked on June 9, 2008
  92. accounting

    Identify at least three external users of accounting information and indicate two questions they might seek to answer through their use of accounting information

    asked on September 28, 2007
  93. spelling

    I am a step mom to 3rd grade twins. One of them is failing her spelling tests repeatedly. I have very limited time with them and don't talk to them very often, nor am I allowed to speak to the teachers. I have looked at the LMC for books on spelling but

    asked on November 1, 2006
  94. math

    a technician charges $75.00 for consult plus $35.00 per hour. write an equation for the function. what are the variables represent and find the number of hours if he charged you $285.

    asked on November 5, 2017
  95. math

    You owe $300.00 on your credit card. Each month you fail to make a payment, your balance increases by 2%. How much will you owe after 2 years of missing payments?

    asked on October 17, 2017
  96. math

    the relative change in price was 45% decrease. If the new price is $68.00 what was the original price.

    asked on October 11, 2017
  97. Math

    a pair of $90 shoes goes on sale for 35% off and then goes on the clearance rack for an additional 10% off. a customer walks in with a 20% off coupon good on all clearance items and buys the shoes. How much did the customer pay for the shoes? and the price

    asked on September 26, 2017
  98. English

    What does these sentence mean to do?what type of basis of comparison exists for the topic that you chose. ?what common ground or common elements do the two subjects share?

    asked on March 22, 2015
  99. Hydrology

    I have no idea how to calculate this, I just need some direction please (like an equation)? Consider a drainage basin 187 km2. How much water is produced (m3) if 2.5 inches of rain falls on the basin? How many people could be supported on the water

    asked on January 28, 2015
  100. physics

    008 (part 1 of 5) 10.0 points A wheel makes 72 revolutions in 2 seconds. What is the angular velocity of the wheel? Answer in units of cycles/s

    asked on October 20, 2013


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