stacey

Popular questions and responses by stacey
  1. Chemistry

    An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (d=1.114 g/mL; M=62.07 g/mL) and water (d=1.00 g/mL) at 20 degrees C. The density of the mixture is 1.070 g/mL. Expreess the concentration of ethylene glycol as volume

    asked on October 18, 2010
  2. Chemistry

    Write a balanced equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, CaS.

    asked on April 5, 2011
  3. Algebra-Problems

    Please help with my word problems? Solve the problem. The rabbit population in a forest area grows at the rate of 6% monthly. If there are 260 rabbits in April, find how many rabbits (rounded to the nearest whole number) should be expected by next April.

    asked on October 24, 2007
  4. chemistry

    At what temperature (from your graph) do KNO3 and NaCL have same molar solubility?

    asked on April 5, 2011
  5. Chem

    what is the oxidation number on each of these ions - Ag2S + 2Al - 6Ag + Al2S3 Can you show your work? Thanks a bunch:)

    asked on May 9, 2010
  6. Physics

    A ladder 10-m long and weighing 50 N rests against a smooth vertical wall. If the ladder is just on the verge of slipping when it makes a 50 degree angle with the ground, find the coefficient of static friction between the ladder and the ground.

    asked on May 7, 2010
  7. CONSUMER MATH

    Your total bill at a restaurant is $24.89. You were very pleased with your service, so you decide to leave a 20% tip. What is the amount of the tip you will leave your waiter?

    asked on September 6, 2017
  8. Math

    PLEASE HELP !!! A mason is putting in the foundation for a wall. His assistant digs a trench in roughly the shape of a rectangular solid measuring 50 ft. in length, 12 inches deep along both sides, and 12 inches wide at the top and bottom. How many cubic

    asked on June 17, 2013
  9. math

    In order to determine the amount of liquid a spherical tank will hold, would you need to use volume or surface area?

    asked on May 7, 2011
  10. English

    Write the correct singular possesive, plural form and plural possessive for each word: Witness Attorney Agency Child Notary Public

    asked on September 25, 2012
  11. Math

    A manufacturer has determined that the weekly profit from the sale of x items is given by the function below. It is estimated that after t days in an week, x items will have been produced. Find the rate of change of profit with respect to time at the end

    asked on April 10, 2015
  12. health

    6. ________ is an effective classroom management strategy to help prevent dental cavities. (1 point) Flossing at least once per week Teaching children about plaque and fluoride Using sour candy to make children salivate Serving 100% fruit juice as a snac

    asked on October 16, 2014
  13. math

    A mason's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. What is his pay for this job? THE ANSWER IS NOT &330

    asked on June 17, 2013
  14. college health

    All of the following are true of sexually transmitted diseases EXCEPT: -The incidence of STDs has largely increased over the past 30 yrs - THose with a viral cause have no cure - About 20% of the adult population in the US is infected with genital herpes -

    asked on November 19, 2008
  15. accounting

    Jan. 1 Purchased a small company and recorded goodwill of $150,000. Its useful life is indefinite. May 1 Purchased for $90,000 a patent with an estimated useful life of 5 years and a legal life of 20 years

    asked on July 8, 2011
  16. Solving Rational Equations

    Ms. Spinoni can prepare a mass-mailing of 500 letters in 10 hours. Mr. Harris can prepare a mass-mailing of 500 letters in 15 hours. How long will it take them to prepare a mass-mailing of 1000 letters if they work together? (Hint: The complete job is

    asked on October 23, 2013
  17. mathematics

    Factorise copletely 1) 2ax+3ay-2bx-3by 2)5x^2-20 3)3x^2+4x-15 is the ans to this one = 7x^3-15

    asked on June 13, 2009
  18. please help english

    8. For question 8, identify which sentence below contains an infinitve phrase used as a noun. (1 point) The girls love to swim at Julie’s house. Susan is trying hard to forget. My group was the last to finish. Jane’s goal to win is extreme

    asked on October 13, 2014
  19. english

    "Tonight I Can Write" 1. Read the following lines from "Tonight I Can Write." Write, for example, The night is starry and the stars are blue and shiver in the distance. The night wind revolves in the sky and sings. Which of the following words is used to

    asked on September 8, 2014
  20. Physics

    A particle leaves the origin with an initial velocity v=(3.68i) m/s and a constant acceleration a=(-3.33i-3.72j)m/s^2. When the particle reaches its maximum x coordinate, what are (a) its velocity, (b) its position vector?

    asked on March 14, 2014
  21. Gen chem 2

    calculate the work performed if a balloon contracts from11.75 L to 806 mL due to an external pressure of 3.9 atm.

    asked on November 6, 2013
  22. Physics

    A boy weighing 3.9 102 N jumps from a height of 2.15 m to the ground below. Assume that the force of the ground on his feet is constant. a) Compute the force of the ground on his feet if he jumps stiff-legged, the ground compresses 1.80 cm, and the

    asked on September 20, 2015
  23. health

    8. ________ is the most common and preventable chronic disease in childhood. (1 point) The common cold Cystic fibrosis Hypertension Dental caries

    asked on September 3, 2014
  24. pol201

    Question 2. 2. In Marbury v. Madison, the Supreme Court established the principle of constitutional review by (Points : 1) denying Marbury his right to sue. denying the authority of the President to have made his appointment. claiming that Section 13 of

    asked on April 13, 2014
  25. Algebra 2

    A = 21w + 21h + 2wh Solve for h

    asked on October 26, 2013
  26. math

    An 18 kg mass is placed st one end of a steel bar that is 1 m long. A 35 kg mass is placed at the other end. Where should the fulcrum be placed to balance the bar?

    asked on February 19, 2013
  27. physics, university

    A length of wire has a radius of 3.00 x 10-3 m and a resistance of 0.200 ohms. When the potential difference across the wire is 10.0 volts, the electron drift speed is found to be 2.98 x10-4 m/s. On the basis of these data, calculate the density of free

    asked on November 19, 2012
  28. Chemistry

    Calculate the molecular weight (MW) of a compound with the molecular formula C5H4FeN4. Report your answer to the nearest whole number value and do not include units. For example, if the MW was 35.45 amu, you would report "35" as your answer.

    asked on July 8, 2012
  29. Chemistry

    The empirical formula for a compound with the molecular formula C6H12N2O4 is:

    asked on July 8, 2012
  30. Chemistry

    The empirical formula for a compound with the molecular formula C6H12N2O4 is?

    asked on July 8, 2012
  31. Chemistry

    If 13.75 g of iron (III) nitrate react with an excess of ammonium sulfide, how many grams of iron (III) sulfide are produced? Report your answer to 2 sig figs

    asked on July 8, 2012
  32. psychology

    Is the “reality” assumed by cognitive theorists relative or absolute? Why?

    asked on September 17, 2011
  33. spanish

    unscramble these- uolsrrsedeco

    asked on May 9, 2011
  34. computer networking

    Mobile Training is a small training firm that offers mobile classrooms that come to your company and teaches office software,such as word,excel,QuickBooks,etc. You're asked to design a network for use in a training environment. it should be mobile,easy to

    asked on April 15, 2011
  35. angles

    find the largest negative co terminal angle of -417 degrees.

    asked on August 26, 2011
  36. biology

    Mutation of which of the following would result in the least disruption during development of a frog embryo?

    asked on December 17, 2019
  37. Math

    What are the next two terms in the pattern 3, 6, 5, 10, 9, 18, 17,...?

    asked on November 19, 2019
  38. rio mesa

    The difference of three times a number and 44 is −19−19

    asked on September 8, 2017
  39. Chemistry

    A swimming pool, 10.0 m by 4.0 m, is filled with water to a depth of 3.0 m at a temperature of 20.2°C. How much energy is required to raise the temperature of the water to 24.0°C?

    asked on October 27, 2015
  40. Mechanics NYA

    Assume you are driving a car at a constant speed of 75.0 km/h. Suddenly you see a deer standing on the highway and you must put on the brakes. Your reaction time (time elapsed between the moment you see the deer and your foot hitting the brakes) is 0.116

    asked on September 16, 2015
  41. please check my english

    3. In "The Destructors," which of the following best describes how Blackie feels about T's new role as gang leader? (1 point) resentful curiosity skeptical obedience unwavering support overwhelming resignation 4. Which of the following quotes from "The

    asked on October 13, 2014
  42. health

    6. Which of the following policies would not be effective for disease prevention? (1 point) specifying times and techniques for hand-washing requiring daily cleaning of restrooms mandating inclusion of children who are ill denying admission to

    asked on September 3, 2014
  43. health

    What is a program-specific regulation? (1 point) Participation is voluntary, but its regulations are mandatory. Participation and regulations are mandatory. Only certain programs must participate. Only certain programs must follow its regulations

    asked on September 3, 2014
  44. Algebra

    Keiko is a software saleswoman. Let x represent her total pay (in dollars). Let y represent the number of copies of History is Fun she sells. Suppose that x and y are related by the equation 2200+900x=y. Answer the questions below. Note that a change can

    asked on March 26, 2014
  45. Algebra

    Markus jogs 4 mi around the track at an average rate of r mi/h. Then he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout last 1 h. At what rates did Markus jog and walk?

    asked on October 24, 2013
  46. Algebra

    At a cafeteria, the automatic ice machine can completely fill itself in 20 minutes. During lunch time, customers can completely empty the ice machine in 30 minutes. At the start of lunch time, the ice machine is completely and it starts making ice at the

    asked on October 24, 2013
  47. Algebra

    100mL of a solution contains 30 mL of acid; this is called a 30% acid solution because part 30 ---- = ---- = 0.30. whole 100 How many milliliters of acid x would need to be added to the solution to turn it into a 50% solution ? (HInt: Adding acid increases

    asked on October 23, 2013
  48. Math

    A hot water heater measures 20" in diameter. What is the area of a metal base for the water heater, assuming a two-inch overhang for the base beyond the edge of the heater?

    asked on June 17, 2013
  49. Geometry

    The grade of a road or a railway road bed is the ratio rise/run, usually expressed as a percent. For example, a railway with a grade of 5% rises 5 ft for every 100 ft of horizontal distance. 1. The Johnstown, Pennsylvania, inclined railway was built as a

    asked on April 15, 2013
  50. Stats

    how did you come to this answer? The answer is approximately =0.017 b) Ten Cobalts are randomly selected and the miles per gallon for each car are recorded. What is the probability that the mean miles per gallon exceed 34 miles per gallon? The final answer

    asked on May 28, 2012
  51. math

    in a class of 30 students, 17 have computers at home and 20 have cassettes. If 4 students in the class have neither a computer or a cassette, how many of the 30 students have both?

    asked on November 10, 2011
  52. Geometry

    Find the area of 33m, 30m, and 36.5m.

    asked on May 27, 2011
  53. chemistry

    Wrtie the equilibrium constant expression for the reaction of NH3 with water. the OH- concentration of .050 M ammonia, NH3, is 9.5 x 10^-4 M

    asked on November 17, 2010
  54. Chemistry

    A baker uses sodium hydrogen carbonate as the leavening agent in a banana nut quickbread. the baking soda decomposes according to two possible reactions. 1. 2 NaHCO3 = Na2CO3+H2O+CO2 2. NaHCO3+H=H2O+CO2+Na. calculate the volume in mL of CO2 that forms at

    asked on October 7, 2010
  55. 10th grade

    3x-2-x=7-x

    asked on August 28, 2010
  56. chem

    Hi..Can you balance these 4 chemical reactions for me please: 1) Cu + 2Ag NO3 2) Zn + Al(NO3)3 3) Cu + ZnSO4 4) Ca + 2HCI Also will a chemical reaction occur in any of these? Thanks so much Stacey

    asked on May 11, 2010
  57. chemistry

    Please I need help...I have been trying so hard to finad this answer... Suggest a test chemical that can be added to the water sample to precipitate the lead(II) ions. please show a chemical eqaution for the formation of the precipitate. Thank u so much:)

    asked on April 25, 2010
  58. Chemistry

    determine the mass of carbon monxide that is produced when 45.6 grams of methane reacts with 73.2 grams of oxygen gas. Can you please show work in detail please. Thanks

    asked on March 25, 2010
  59. Chemistry

    Can you determine the mass of carbon monxide that is produced when 45.6 grams of methane reacts with 73.2 grams of oxygen gas. Can you please show work in detail please. Thanks

    asked on March 25, 2010
  60. Math

    In a series of three plays, a college football team had the following results:loses 5 yards, gains 8 yards, and loses 7 yards. Find the net gain (or loss) after this series. The answer is suppose to be 4. ( I keep getting -4)

    asked on January 27, 2010
  61. sci

    what are the types of renewable energy alternative? what are some challenges with using and managing these alternative, renewable energy resources?

    asked on January 31, 2008
  62. biology

    DNA codes for mRNA, which is then translated into polypeptides,which are strands of amino acids. The DNA sequence below codes for the following amino acids: methionine-valine-glycine-alanine-alanine-serine TAC CAA CCA CGC CGC UCA What effect would the

    asked on December 31, 2007
  63. chemistry

    Given the information A+B⟶2D ΔH∘=−764.7kJ ΔS∘=328.0 J/K C⟶D ΔH∘= 465.0 kJ ΔS∘= −188.0J/K calculate ΔG∘ at 298 K for the reaction A+B⟶2C ΔG∘=

    asked on November 24, 2019
  64. chemistry

    Given the information A + B ⟶ 2 D Δ H ∘ = − 764.7 kJ Δ S ∘ = 328.0 J / K C ⟶ D Δ H ∘ = 465.0 kJ Δ S ∘ = − 188.0 J / K calculate Δ G ∘ at 298 K for the reaction A + B ⟶ 2 C Δ G ∘ =

    asked on November 24, 2019
  65. Math

    Sarah makes $13.65 an hour her percentage raise was 3.5% what is her new hourly rate

    asked on June 11, 2018
  66. Math

    How do you solve proportional relationships? Problem: A gym employee is paid monthly. After working for three months, he had earned $4,500. To determine how much money he will make over a six-month period. 1. He continue to earn the same rate how much will

    asked on January 22, 2018
  67. Math

    How do you do proportion relationships

    asked on January 22, 2018
  68. Chemistry 101

    Determine the mass aluminum chloride , alcl3 produced when 112.3 g of chloride gas, cl2 is used

    asked on November 22, 2017
  69. Us History

    how can the great depression in the US give rise to dictators like Hitler and Mussolini?

    asked on February 27, 2017
  70. maths

    At the party,half the guests had left by 10pm. half the remaining guests left about 11pm.the last 6 stayed until midnight how many guests were at the party

    asked on December 14, 2016
  71. Social studies

    Explained three what's why a newly couple would delay their first child

    asked on October 27, 2016
  72. Social Studies

    Why were backcountry colonist more self significant than plantation?

    asked on October 16, 2016
  73. math

    why might you want to round to the nearest hundred rather than the nearest ten?

    asked on August 29, 2016
  74. Pre-Algegra

    5(x - 1) + -3x + 6 =9 check plz x = 4??

    asked on May 20, 2016
  75. Math

    WhT is there relationship between the lines having the equations y=4x+2 and y=1/4x? Is it because they are neither parallel nor perpendicular?

    asked on May 8, 2016
  76. Physics

    When a 0.111 kg mass is suspended at rest from a certain spring, the spring stretches 3.90 cm. Find the instantaneous acceleration of the mass when it is raised 6.20 cm, compressing the spring 2.30 cm.

    asked on September 19, 2015
  77. Math

    A manufacturer has determined that the weekly profit from the sale of x items is given by the function below. It is estimated that after t days in an week, x items will have been produced. Find the rate of change of profit with respect to time at the end

    asked on April 9, 2015
  78. Calculus

    A manufacturer has determined that the weekly profit from the sale of x items is given by the function below. It is estimated that after t days in an week, x items will have been produced. Find the rate of change of profit with respect to time at the end

    asked on April 9, 2015
  79. chemistry

    Answer the following questions based on this reaction: Pb(NO3)2 (aq) + 2 NaCl (aq) --> PbCl2 (s) + 2 NaNO3 (aq) a) If 225 mL of 12.95 M Pb(NO3)2(aq) are reacted with a solution made with 5.05 g of NaCl (aq), how many grams of lead (II) chloride will be

    asked on January 23, 2015
  80. chemistry

    If 80.0 g of bromine is added to 40.0 g of sodium, a) what is the limiting reactant? b) what is the excess mass of the reactant? c) what is the mass of product?

    asked on January 23, 2015
  81. Math

    If f (x)=x+2 , g(x)=-4x+3, and h(x)=x^2-2x+1, find each value. 1. (f x g x h) (3) 2. (h divided by fg) (-6) 3. [ g o ( h o f)] (-4) If f(x)=5x , h(x)=x^2+6x+8 , solve f[h(a+4)]

    asked on January 18, 2015
  82. Algebra

    A shop sells coffee and donuts. The coffee sells for $4.31 and donuts for $0.83 apiece. The cost to produce a cup of coffee is $1.50 and the cost to make a donut is $0.76. In month 1 the quantity of coffee sold is 1,283 and donuts sold was 216. In month 2

    asked on January 15, 2015
  83. health

    1. What is the ideal length of time for a cool-down following an intense workout?

    asked on January 2, 2015
  84. Help with differential eqs problem???? (Calculus)

    Consider the differential equation dy/dt=y-t a) Determine whether the following functions are solutions to the given differential equation. y(t) = t + 1 + 2e^t y(t) = t + 1 y(t) = t + 2 b) When you weigh bananas in a scale at the grocery store, the height

    asked on November 30, 2014
  85. english

    3. In "The Destructors," which of the following best describes how Blackie feels about T's new role as gang leader? (1 point) resentful curiosity skeptical obedience unwavering support overwhelming resignation

    asked on October 13, 2014
  86. english

    3. In "The Destructors," which of the following best describes how Blackie feels about T's new role as gang leader? (1 point) resentful curiosity skeptical obedience unwavering support overwhelming resignation 4. Which of the following quotes from "The

    asked on October 13, 2014
  87. english

    3. In "The Destructors," which of the following best describes how Blackie feels about T's new role as gang leader? (1 point) resentful curiosity skeptical obedience unwavering support overwhelming resignation 4. Which of the following quotes from "The

    asked on October 13, 2014
  88. chemistry

    The density of silver is 1.050×104 kg/m3. What is the mass of a rectangular ingot of silver with dimensions 1.00 cm × 4.00 cm × 0.780 dm? How do I get started? I really do not understand.

    asked on September 29, 2014
  89. english

    2. Which vocabulary word describes a small sandbar or islet within a river that contains thick brush or trees? (1 point) halter tow-head staving

    asked on September 19, 2014
  90. english

    1. In Adventures of Huckleberry Finn, what was E. W. Kemble hired to do? (1 point) act as Mark Twain’s agent edit the novel illustrate the novel

    asked on September 19, 2014
  91. english

    2. In “Tonight I Can Write,” the poet personifies each of the following except (1 point) the sky. the heart. the soul. the voice

    asked on September 8, 2014
  92. english

    2. In "The Censors," it is ironic that the Censorship Division doesn’t bother to check Juan’s __________ before hiring him. (1 point) mail references health pockets

    asked on September 6, 2014
  93. writing

    i have to write a compare and contrast essay but i don't know what mt topic should be and ideas

    asked on September 4, 2014
  94. health

    2. ________ was the more effective policy in reducing the risk for injury and fatality in the early childhood setting according to a recent study. (1 point) Requiring teachers to have more experience Requiring directors to have more experience Requiring

    asked on September 3, 2014
  95. health

    9. Which of the following best describes the purpose of the publication Caring for Our Children: National Health and Safety Performance Standards: Guidelines for Out-of-Home Child Care Programs? (1 point) to set immunization requirements and licensing

    asked on September 3, 2014
  96. health

    10. Stricter standards intended to improve the health and safety of children in early childhood settings may instead put some children at higher risk because (1 point)implementing more rigorous safety standards tends to increase the cost of care. children

    asked on September 3, 2014
  97. health

    1. Compared to early childhood teachers, the National Health and Performance Standards recommend that directors have (1 point) the same qualifications. more advanced educational degrees. more experience teaching children. more pediatric and CPR training.

    asked on September 3, 2014
  98. math

    8. When constructing a perpendicular bisector, why must the compass opening be greater 1/2 than the length of the segment?

    asked on August 29, 2014
  99. math

    if 3+x / 7+x = 3/7 + 3/7, then x= what

    asked on May 12, 2014
  100. statistics

    It is known that the population mean for the Full Scale IQ of the WAIS is 100 with a standard deviation of 15. A researcher assesses a sample of 200 adults and find that they have a mean Full Scale IQ of 102. The point estimate of the mean for this group

    asked on April 16, 2014

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