Most popular questions and responses by Stacy
  1. Chemistry...Help!!

    I don't even know how to start this...The valence electron configurations of several atoms are shown below. How many bonds can each atom make without hybridization? 1. Si 3S2 3P2 2. P 3S2 3P3 3. F 2S2 2P5

    asked on November 6, 2010
  2. chemistry

    A laboratory procedure calls for making 400.0 mL of a 1.1 M NnO3 solution. What mass of NaNO3 (in g) is needed?

    asked on October 13, 2010
  3. physical science

    Please check my answers on this physical science quiz, thanks 1. in which of the following scenarios are action and reaction forces involved? a. when a tennis racket hits a ball b. when you step from a curb c. when you row a boat d. all of the above** 2.

    asked on January 13, 2018
  4. Math

    for a cub scout meeting, the leader bought 4 pizzas, and 1 1/2 of the pizzas contained pepperoni. the scouts ate 5/6 of the pizzas that contained pepperoni. the remaining pizza that contains pepperoni represents what fraction of the 4 pizzas that the

    asked on November 11, 2016
  5. English-Scarlet Letter

    Chapter 13 1. The point of the statement in the first paragraph, “The public is despotic… to its generosity” is to a. Argue that the public will eventually see reason b. Assert that the public upholds certain rights for its citizens c. Suggest that

    asked on January 27, 2015
  6. chemistry

    calculate the molarity of each of the following solutions. Help!! (a) 0.36 mol of LiNO3 L of solution (b) 70.7 g C2H6O in 2.25 L of solution (c) 11.56 mg KI in 114.2 mL of solution

    asked on November 20, 2010
  7. chemistry

    Determine the number of bromide ions in solution when 4.23 g of magnesium bromide and 1.21 g of potassium bromide are dissolved in 120mL of water. Please explain not sure how to even start this problem, thanks! chemistry - DrBob222, Wednesday, December 8,

    asked on December 8, 2010
  8. Math 7th grade

    Oleg ran 8.8 miles in 1 hour and 20 min. Assuming he continues at a constant rate ,how long will it take him to run any number of miles? Half a mile ? 0 miles?

    asked on August 21, 2018
  9. chemistry

    What is the molecular, ionic, and net ionic equations for Copper(II) sulfate + sodium phosphate?

    asked on November 3, 2010
  10. chemistry

    How many moles of KCL are contained in 114 mL of a 1.85 M KCL solution?

    asked on October 13, 2010
  11. Chemistiy

    Arrange these acids from weakest to strongest: HClO2, HCN, HF, HCl Ik the order is : HCN < HF < HClO2 < HCl but how exactly does one come to that conclusion with no necessary given information (Ka values?). Is there a way to memorize? or a trick? to know

    asked on January 24, 2017
  12. math

    The perimeter of a rectangular garden is 46. The length is 7 less than 4 times the width. What are the dimensions of the garden?

    asked on September 9, 2016
  13. Physics

    A stone is dropped from a tower 100 meters above the ground. The stone falls past ground level and into a well. It hits the water at the bottom of the well 5.00 seconds after being dropped from the tower. Calculate the depth of the well. Given: g = -9.81

    asked on April 12, 2016
  14. English

    Please Check my answers for Chapter 16 of the scarlet letter The narrator hints in the first paragraph that A.Hester's sin is not unique in the community B.The minister is concerned about causing a scandal c.Any interference from Chillingworth would be

    asked on January 26, 2015
  15.!! =)

    MaVa = MbVb can be used for the reaction between HCl and NaOH. Can it be used for the reaction between NaOH and H2C2O4 (oxalic acid, which can be found in rhubarb leaves, contains 2 acidic protons)? Explain your answer showing the balanced equation

    asked on November 17, 2010
  16. Math

    Find a formula for the exponential function that satisfies h(2)=22 and h(4)=14.08

    asked on February 16, 2013
  17. home work help please

    Complete the Multiple Pathways to Learning assessment and the Personality Spectrum assessment. Relate results to your personal study habits. Prepare a 350- to 700-word paper where you answer the following questions: · How may you use the study techniques

    asked on September 18, 2011
  18. Physics

    Emily challenges her husband, David, to catch a $1 bill as follows. She holds the bill vertically, with the center of the bill between David's index finger and thumb. David must catch the bill after Emily release it without moving his hand downward. If his

    asked on September 26, 2010
  19. chemistry

    Assuming that the total volume does not change after 0.200 g of KCl is added to 1.0 L of a saturated aqueous solution of AgCl, calculate the number of moles of Ag+ ion in the solution after equilibrium has been reestablished. For AgCl, Ksp = 1.8 × 10¯10

    asked on November 16, 2011
  20. Grade 11 Functions

    A small company manufactures a total of x products per week. The production cost is modelled by the function y=50 + 3x. The revenue is given by the function 6x - x^2/100. How many items per week should be manufactured to maximize the profit for the

    asked on January 24, 2016
  21. chemistry

    How do I draw the lewis structure for [PF5Cl]- i'm getting confused on this one!! Please explain answer Thanks =))

    asked on December 1, 2010
  22. English

    Please check my answers for the Scarlet Letter if I am right. If not, please help me. Chapter 13 1. The point of the statement in the first paragraph, “The public is despotic… to its generosity” is to a. Argue that the public will eventually see

    asked on January 26, 2015
  23. calculus

    Find a formula for the exponential function that satisfies h(2)=22 and h(4)=14.08

    asked on February 16, 2013
  24. Chem

    dissociation NaCH3COO*3H2O

    asked on September 14, 2016
  25. psy

    2.   Which of the following statements regarding the outcomes of Mary Ainsworth's strange situation experiments is most accurate?       A. Ambivalent children may both hit and embrace their mother on her return. B. Avoidant children cry when the

    asked on October 17, 2016
  26. physics 2

    A charged line extends from y = 2.50 cm to y = -2.50 cm. The total charge distributed uniformly along the line is -9.00 nC. Find the magnitude of the electric field on the x-axis at x = 0.25 cm.

    asked on September 19, 2010
  27. chemistry

    What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179 g/mL, should be used to make 4.60 L of an HCl solution with a of 1.9? HELP!!!

    asked on December 6, 2010
  28. Geography

    Hello, can someone check my answers please? thank you. Answers are marked with * 1. What is the effect of Washington’s location on the Pacific Rim? a.International relations are difficult to develop and maintain. b.The culture in Washington is more

    asked on February 16, 2019
  29. math (plz help)

    In a movie theater, theater A has 30 seats in the first row. Each next row has 4 more seats in it than the previous row has. 1) How many seats are in the 4th row? 2) Is there a row with exactly 60 seats in it? 3) Theater B has 40 seats in the first row and

    asked on March 14, 2011
  30. math

    Break apart 56 to solve 56 divided by 7

    asked on January 21, 2014


    asked on March 23, 2010
  32. Chemistry

    complete the equation. Na + H2-->

    asked on February 5, 2014
  33. Physics

    In a 100 m race, Maggie and Judy cross the finish line in a dead heat, both taking 10.6 s. Accelerating uniformly, Maggie took 2.20 s and Judy 2.90 s to attain maximum speed, which they maintained for the rest of the race. What was Maggie's acceleration?

    asked on February 2, 2012
  34. PE

    Lifestyle choices and health awareness affect your position on the health continuum. wellness scale. risk factor chart**. rating.

    asked on September 27, 2015
  35. Math (Probability)

    It is known that steroids give users an advantage in athletic contests, but it is also known that steroid use is banned in athletics. As a result, a steroid testing program has been instituted and athletes are randomly tested. The test procedures are

    asked on February 6, 2015
  36. math

    a cubic container was completely filled with water. when 3/4 of the water from the container was poured into a rectangular tank, the tank became 1/4 full. the capacity of the tank is 1.024 liters more than that of the cubic container. Find the length of

    asked on April 17, 2015
  37. Economy

    How to draw isoquant curves for a certain quantity? What does "increasing return to scale" and "decreasing returns to scale" mean? What is "capital input" if all I have is quantity of labor and total quqntity of product? Typically, a production isoquant is

    asked on October 23, 2006
  38. physics

    three more questions: 1) A 1.50kg projectile is launched at 18.0m/s from level ground. The launch angle is 26 degrees above the horizontal. (Assume negligible friction) a) What is the maximum height reached by this projectile? b) How was will the

    asked on February 17, 2011
  39. Chemistiy

    For the reaction: Ba(OH)2 (s) + 2 NH4Cl (s) → BaCl2 (s) + 2 H2O (l) + NH3 (g) If ammonia gas (NH3) is produced at the rate of 0.72 mol/s, what is the corresponding rate of consumption of ammonium chloride? ANS: NH4Cl is consumed at a rate of 1.4 mol/s,

    asked on January 23, 2017
  40. Chemistry

    Rank these from lowest boiling point to highest. CH4 CH3CH2CO2CH2CH3 CH3(CH2)2C=ONH2 CH3COOH

    asked on December 5, 2014
  41. math

    please help with in a day jamal spent 1 2/3 hours watching television 1 4/5 hours taking an afternoon nap, and 7/8 hour helping his mother with housework how much time did Jamal spend on watching television and helping with housework do I have to change

    asked on May 11, 2015
  42. Biology

    The anticodon for GCG is: A) AUA B) CCT C) UAU D) CGC **D

    asked on December 19, 2016
  43. english

    describe the prosody of the poem (question, by May Swenson) and comment on the effect of the initial substitutions of the meter.

    asked on April 26, 2009
  44. PE

    Which side of the health triangle corresponds to getting enough rest? physical health social health mental and emotional health**** none of the above

    asked on September 27, 2015
  45. 3rd grade Shurley english

    This is all new to me how would you classify the sentence: Ouch! That bee sting hurts!

    asked on December 28, 2008
  46. Math

    A carpet company uses the template to design a rug. Write an expression for the area of the shaded region as it relates to the variable length x answer. The shaded square has a white square within it. On the outside of the shaded region there is 3x+4 on

    asked on January 4, 2018
  47. Physics

    A man in search of his dog drives first 13.3 mi northeast, then 17.3 mi straight south, and finally 6.85 mi in a direction 30.3° north of west. a) What is the magnitude of his resultant displacement? b) What is the direction of his resultant displacement?

    asked on January 29, 2015
  48. science

    a rock is thrown 1.8 meters into the air. find how fast it was thrown?

    asked on April 15, 2016
  49. Hospitality: food, shelter, and fun away from home

    Franchising is very common in the hospitality industry. Both the franchiser and franchisee have rights and responsibilities. In this assignment, you review a Web site dedicated to promoting fair practices. As you compare the information in the text with

    asked on December 11, 2009
  50. psy

    4.  In the _______ theory of motivation, _______ motivation is to satisfaction provided by activities that are their own reward as _______ motivation is to satisfaction derived from the reward for some kind of behavior, such as money or status.      

    asked on October 17, 2016
  51.!! =)

    How many grams of FeSo4 are required to prepare 0.50 L of a 0.010 M FeSO4 solution? I don't need the answer just shown how to do it! thanks

    asked on December 13, 2010
  52. sociology

    Which statement best reflects the argument that prayer in school should be protected? (Points : 1) Prayer is protected by the second amendment. Prayer contributes to virtuous ideals in the student body. Prayer is different across cultures and as such

    asked on September 23, 2014
  53. chemistry

    Propane fuel is used in BBQs. Use the following reaction to determine how many moles of oxygen gas are needed to react with 1.6 moles of propane gas. C3H8(g)+5O2(g) --------> 4H2O(g)+ 3CO2(g)

    asked on March 30, 2015
  54. Chemistry

    Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to yield the ester isopentyl acetate which has the odour of bananas. If the yield from the reaction is 45%, how many grams of isopentyl acetate are formed when 3.77 g of acetic acid and 7.46

    asked on November 19, 2010
  55. physics 2

    A charged line extends from y = 2.50 cm to y = -2.50 cm. The total charge distributed uniformly along the line is -9.00 nC. At what distance x does the result for the infinite line of charge differ by 1.0% from that for the finite line?

    asked on September 19, 2010
  56. chemistry

    Use the activity series of metals to write a balanced chemical equation for each single-replacement reaction. Zn(s) + AgNO3 (aq) --> NOTE: The three above is a should be a small 3. Please explain how to figure out this problem, and provide a

    asked on February 5, 2008
  57. Budgeting

    A well-established coffee shop, the Hot New Café, wants to build a new café for increased capacity. It’s expected sales are $800,000 for the first 5 years. Direct costs including labor and materials will be 50% of sales. Indirect costs are estimated at

    asked on March 5, 2012
  58. Chemistry

    what does it mean when we say that concentrated nitric acid has 16 molars

    asked on May 9, 2011
  59. chemistry

    calculate the molarity of a solution in which 22.6g C6H12O6 is dissolved in 1.08L of solution

    asked on October 13, 2010
  60. SS

    What is the basis for the the economic theory of mercantilism that drove the exploration and settlement of North America by Europeans? Mercantilism is rooted in the idea that a nation’s power stems from the authority of an absolute monarch. Mercantilism

    asked on October 1, 2015
  61. IT

    What are the most important contemporary hardware and software trends?

    asked on April 22, 2014
  62. chemistry

    Determine the mass of NaCl in 1.0 L of 3.0 % by mass aqueous solution of sodium chloride. The density of the solutions is 1.10 gmL-1 please explain all the steps, thanks!

    asked on December 8, 2010
  63. Chemistry

    In a calibration of a calorimeter, 50.0 g of water at 60.0 *C is added to 50.0 g of water at 20.0 *C to give a mixture at 39.0 *C. What is the heat capacity of the calorimeter used in this experiment? If the calorimeter has a mass of 5.4g, what is its

    asked on November 29, 2010
  64. Math

    The weight w of an object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 miles from the center of the earth), an astronaut weighs 110 pounds. Find her weight when she is 139 miles above the surface of the

    asked on September 24, 2014
  65. Math

    I really need some help with this one. Envision that you have served as business manager of Media World for over 2 years. You have noticed that for the last 12 months the business has regularly had cash assets of $20,000 or more at the end of each month.

    asked on October 23, 2009
  66. Chemistry

    Balance equation. been working on this for almost 5 hours now, just cant do it. HCl+As2O3+NaNO3+H2O-->NO+H3AsO4+NaCl

    asked on February 5, 2014
  67. Chemistry

    write the conjugate acid of this base. PO4^3-

    asked on October 15, 2012
  68. Physics

    A hunter aims directly at a target (on the same level) 61.0 m away. If the bullet leaves the gun at a speed of 176 m/s, by how much will it miss the target? At what angle should the gun be aimed so as to hit the target?

    asked on February 5, 2012
  69. physics

    A rock is thrown from a cliff top at 18m/s, 25 degrees above the horizontal. It lands on the beach 4.2 seconds later. a) What is the height of the cliff? b) Hor far from the base of the cliff did the rock land?

    asked on February 17, 2011
  70. Chemistry

    I need the molecular, ionic and net ionic equations for Potassium carbonate and hydroiodic acid........i'm clueless please help as much as you can!

    asked on October 28, 2010
  71. Math

    The distance between towns A and B is 280 km.A car and a lorry travel from A to B.The average speed of the lorry is 20km/hr less than that of the car whose speed is x km/hr.The lorry takes 1h and 10 minutes more than the car to travel from A to B.Write an

    asked on November 13, 2018
  72. chemistry

    calculate the enthalpy of formation, per mole, of sucrose, C12H2211O(s). C12H22O11(s) + 12O2(g) --> 12CO2(g) +11H2O(l) deltaH=-5.65*10^3 kJ

    asked on March 23, 2011
  73. physics

    A stone tied to the end of a string, 80 cm long, is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 seconds what is the magnitude and direction of the acceleration of the stone?

    asked on November 16, 2010
  74. physics

    It takes a runner 3 h, 10 min, 55 s to run a marathon. If the distance of a marathon is 42.2 km, what is the average speed of the runner?

    asked on September 6, 2017
  75. Am. History

    the question was to place events in chronological order 1. French and Indian War begins 2. New Englanders capture Frech port of Oswega 3. The last French fort falls in New York 4. British capture Montreal 5. Treaty of Paris am i right?

    asked on July 23, 2011
  76. Biology

    what are 2 essential roles that enzymes play in cells?

    asked on November 6, 2007
  77. pys

    3. In the research conducted by Hans Eysenck, factor analysis was used to identify ________ basic personality dimensions. Of these, the tendency to distort reality was labeled:       A. three; extraversion B. five; neuroticism. C. three;

    asked on October 17, 2016
  78. SS

    How did the Protestant Reformation in Europe influence the settlement of North America? European settlers of different religions chose to establish new colonies in order to spread their faith and practice their beliefs. Religious thinker John Calvin was a

    asked on October 1, 2015
  79. Algebra 1

    A math test is worth 100 points and has 38 problems. Each problem is worth either 5 or 2 points. How many problems of each point value are on the test?

    asked on November 18, 2015
  80. Probability

    An oil-drilling company knows that it costs $25,000 to sink a test well. If oil is hit, the income for the drilling company will be $355,000. If only natural gas is hit, the income will be $130,000. If nothing is hit, there will be no income. If the

    asked on March 2, 2013
  81. physics

    The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n = 1 labels the lowest, or "ground" state, n = 2 is the second state, n = 3 is the third state, and so on.

    asked on August 4, 2011
  82. chemistry

    calculate the enthalpy of formation, per mole, of sucrose, C12H2211O(s). C12H22O11(s) + 12O2(g) --> 12CO2(g) +11H2O(l) deltaH=-5.65*10^3 kJ

    asked on March 23, 2011
  83. Chemistry lab

    A 1.340gram sample of an unknown acid, H3A, was placed in a 250.0 mL volumetric flask and diluted to volume with water. A 45.35 mL sample of this acid solution was titrated with 37.77 mL of a 0.1006M NaOH solution. A) Using one set - up dimensional

    asked on March 22, 2016
  84. psychology

    Brain teaser help please! Bedspread Agent and also ii_________ii oo oo

    asked on February 1, 2011
  85. chemistry

    Find the percent by mass of sodium chloride in a 1.35 M NaCl solution. The density of the solution is 1.06 g/ do I go about doing this question thanks!

    asked on December 4, 2010
  86. Chemistry

    Write the oxidation half reaction for Magnesium metal and write the reduction half equation for Cu^2+ ions? I don't understand, please give me a simple explanation.

    asked on March 1, 2016
  87. chem

    Ethanol, C2H6O, is very soluble in water. Describe how water dissolved ethanol.

    asked on October 11, 2012
  88. physics

    An ore car of mass 42000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 6.8 m lower vertically, is a horizontally situated spring with constant 3.8 x 10^5 N/m. The acceleration of gravity is 9.8 m/s^2. How much is

    asked on December 8, 2011
  89. Math

    Which probability interpretation is most reasonable to use: relative frequency, subjective, or classical? The probability your company's sales will exceed seven million dollars this year. Is this relative frequency? The probability that the S&P will

    asked on November 19, 2011
  90. Physics!

    Baseball player A bunts the ball by hitting it in such a way that it acquires an initial velocity of 1.9 m/s parallel to the ground. Upon contact with the bat, the ball is 1.5 m above the ground. Payer B wishes to duplicate this bunt, in so far as he also

    asked on October 14, 2010
  91. PE

    You discover a red bump on your leg that itches. You decide to research the symptoms. While researching, you discover contradictory information. What is the best next step? Assume the bump is life threatening and call the doctor.*** Implement the solution

    asked on September 27, 2015
  92. broward

    Calculate the molarity of 5.8 L of NaCl solution that contains 65 g of NaCl

    asked on March 30, 2015
  93. Math

    You withdraw $260 from your bank account in 5 trips to the ATM. What is the average change in your account balance after each trip? A submarine descends 60ft./min. What depth below the water's surface will the submarine reach in 4 min after leaving the

    asked on September 24, 2013
  94. Physics

    A rigid tank contains 1.20 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 28.5 atm to 5.30 atm. Assume the volume of the tank and the temperature of the gas remain

    asked on November 5, 2010
  95. Math

    list whole numbers 1-10 that are factors of 1260

    asked on September 3, 2008
  96. Chemistiy

    Check if im right please. a. oxidation occurs at my anode ____ ** Voltaic Cell b. You can use standard reduction potential table to calculate how much voltage it takes to operate me____ **Both voltaic cell and electrolytic cell

    asked on December 13, 2016
  97. Physics

    You are driving south on a highway at 24.0 m/s (approximately 54 mi/h) in a snowstorm. When you last stopped, you noticed that the snow was coming down vertically, but it is passing the windows of the moving car at an angle of 26.6° to the horizontal.

    asked on February 7, 2012
  98. math (plz help)

    Ms. Sue has not answered this question where all work must be shown. Plz, Ms. Sue do not answer this one again. Let someone else help me...plz. In a movie theater, Theater A has 30 seats in the first row. Each row has 4 more seats in it than the previous

    asked on March 14, 2011

    how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions? well normally you go moles=grams/molar mass than M= moles/L but when looking for grams? what do you do........multiple .250 by .100 than divide

    asked on December 13, 2010
  100. phys

    A toy airplane of mass 0.159 kg is tied to the ceiling with a string. The airplane moves in a horizontal circle of radius 2.97 m, with a constant speed of 1.51 m/s. What is the angle the string makeswith the vertical?

    asked on December 7, 2009


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