Newest questions and responses by lee
  1. Social studies

    Why were many countries still dependent on outside help from other nations, such as the United States, following their independence in the 1800s? A. The colonies were weak, and other nations promised to maintain military bases in their countries in order

    asked on December 19, 2018
  2. Chemistry

    The equation of a simulated photosynthesis reaction is represented by 6CO2(g) + 6H2O (g) -> C6H12O6(s) + 6O2(g) At 31 degree celcius, tje following equilibrium concentration were found [H2O] = 7.91X10^-2M [CO2]= 9.30X10^-1M [O2]= 2.40X10^-3M Determine the

    asked on October 26, 2018
  3. Chemistry

    The equation of simulated photosynthesis is represented by 6CO2(g) + 6H2O(g)-> C6H12O6(s) + 6O2(g) At 31 degree Celcius, the following equilibrium concentration were found. [H2O] = 7.91X10^-2M [CO2] = 9.30X10^-1M [O2] = 2.40X10^-3M My question is how to

    asked on October 26, 2018
  4. Chemistry

    A sample of 0.314g of unknown monoprotic weak acid, HA was dissolved in 25.00 mL of water and titrated with 0.1M KOH. The acid required 27.20 mL of the base to reach equilibrium point. Find the pH of the solution if 40 mL KOH is added to the acid solution.

    asked on October 25, 2018
  5. physics

    A walker's speed, v, is proportional to the ratio of his leg length, L, and the period of the repeating motion of his legs, T, that is, v ∝ L/T. If the period is measured to be proportional to Lp, where p = 3/4, what power of L must the speed be

    asked on October 21, 2018
  6. Math

    In order for a pet to lose weight in a healthy manner, a veterinarian suggested an overweight large-breed dog lost 2 pounds per week. If the expression x-2y represents this situation what must be true about the value of y?

    asked on August 29, 2018
  7. history

    Question: 8) What impact did the Columbian Exchange have on imperialism? A) The popularity of Columbian goo... 8) What impact did the Columbian Exchange have on imperialism? A) The popularity of Columbian goods throughout Europe built American empires. B)

    asked on July 27, 2018
  8. history

    What led to the development of one-crop economies? A. Joint-stock companies found profitability in monopolizing one cash crop. B. One-crop economies were developed through slash-and-burn agricultural practices. C. Colonies sought to reduce costs by

    asked on July 27, 2018
  9. math

    A theater has 22 seats in the first row, 25 seats in the second row, 28 seats in the third row, and so on. How many seats are in the Fifteenth row?

    asked on May 24, 2018
  10. math

    A ball is thrown into the air with an upward velocity of 40 ft/s. Its height h in feet after t seconds is given by the function h = -16h 2 + 40t + 6. A. In how many seconds does the ball reach its maximum height? B. What is the ball's maximum height?

    asked on May 15, 2018
  11. math

    Marcella and Ruben bought some party supplies. Marcella bought 3 packages of balloons and 4 packages of favors for $14.63. Ruben bought 2 packages of balloons and 5 packages of favors for $16.03. Find the price of a package of balloons.

    asked on March 19, 2018
  12. basic word and excel

    _______ data would be useful for creating a weekly status report for your manager that should reflect changes in real time. A. Field B. Integrated C. Linked D. Embedded

    asked on December 13, 2017
  13. basic word & excel

    6. _______ data updates in your destination document if there are changes to the source data. A. Linked B. Integrated C. Embedded D. Field

    asked on December 12, 2017
  14. Science

    If there's 1 gram of nitrogen (N2) at 1 L and 1 gram of hydrogen (H2) at 1 L, would the pressure of H2 be greater than the pressure of N2? And would the density of H2 = the density of N2 at these conditions? There would be more moles of H2 than N2, but the

    asked on December 12, 2017
  15. Basic Word and Excel

    What would be a situation in which you could use an Excel chart to present your data? a.)determining what percentage of customer 101 buys product A, and what percentage of the same customer buys product B b)Compiling survey questions and answers from both

    asked on December 5, 2017
  16. Calculus

    What is the size of the smallest nonnegative angle coterminal with an angle of 1051π radians? I got 180, but it wasn't correct?

    asked on December 2, 2017
  17. Chemistry

    How much energy (in Joules) is required to heat 10.48 g of water from 12.7 oC to 46.3 oC ? Use 4.184 J/goC as the specific heat capacity of water. 53 g of water at 81.5 oC is added to a calorimeter that contains 50.52 g of water at 40.6 oC. If the final

    asked on October 17, 2017
  18. chemistry

    N2 (g) + 3H2 (g) → 2NH3(g) ΔH = -92.2 kJ How much heat (in kJ) is released if 13.3 g of hydrogen is consumed to make ammonia? (Give your answer as a positive number, since you cannot release negative energy.)

    asked on October 14, 2017
  19. Bus math

    Bari Jay, a gown manufacturer, received an order for prom dresses from China. Her cost is $40 a gown. If her markup based on selling price is 76%, what is the selling price of each gown?

    asked on October 13, 2017
  20. English and Arts

    In your personal opinion are you in agreement with the auteur theory?

    asked on October 11, 2017
  21. Cinema

    Is the auteur theory accurate? I mean should one person receive the credit for making the movie or at least the inspiration to make the plot of the film?

    asked on October 11, 2017
  22. English

    Which of the following sentences demonstrates the correct use of capitalizing direction words? A. Are you heading East? B. Poor Alex thought he was driving West. C. The Northeast has been hit with an unusually cold winter. D. I live just South of Scranton.

    asked on October 2, 2017
  23. Computer

    Diagnosing is solving the problem, and troubleshooting is figuring out what the problem is. True False

    asked on September 22, 2017
  24. Math

    Julia spent 1/3 of her birthday money and she lost half of the rest now she has $10 left how much did she get for her birthday

    asked on August 30, 2017
  25. Language Arts

    "Everyone is just walking along concerned with his own problems, his own life, his own worries. And we're just expecting other people to tune in to our agenda." Think about how this theme is developed through the character's words and actions in the novel.

    asked on May 31, 2017
  26. social studies

    There was a crossword puzzle in issue 24 of the N.C weekly reader...8 across and neither my child nor myself could find the answer, she answered all of the rest of the puzzle words, but this one stumped her and it did me as well, the question was, "N.C to

    asked on May 15, 2017
  27. Physics HELP!

    A locomotive of mass 2.1 x 104 kg travelling at 2.0 m/s runs into an identical stationary locomotive. a) If the collision is perfectly inelastic, what is the speed of the two trains after the collision? b) If the collision is perfectly inelastic, what

    asked on May 12, 2017
  28. Physics

    A 5.0 kg penguin sits on top of a 12 kg sled, as in the figure. A horizontal force of 45 N is applied to the sled, but the penguin keeps himself stationary by holding onto a string attached to the wall. The coefficient of kinetic friction between the

    asked on May 12, 2017
  29. Physics

    On takeoff, the combined action of the engines and the wings of an airplane exert a force of 8.00 x 103 N on the plane upward at an angle of 65.0˚ above the horizontal. The plane rises with constant velocity in the vertical direction while continuing to

    asked on May 12, 2017
  30. Physics

    An 1800 kg helicopter rises with an upward acceleration of 2.0 m/s2. What lifting force is supplied by its rotating blades?

    asked on May 12, 2017
  31. Chemistry

    Which of the changes are chemical changes? a) Sugar crystals are ground to a fine powder. b) A candle is burned c) Two clear colorless salt solutions are mixed and a bright orange precipitate forms. d) Candle wax is melted e) A silver teapot turns black

    asked on May 7, 2017
  32. Geography

    Why might a Confucian praise or criticize China’s current political system and its approach to economic and political change?

    asked on April 11, 2017
  33. Chemsity

    will calcium metal be oxidized by sr2+?

    asked on January 30, 2017
  34. Physics

    An amount of ideal gas is placed in a sealed rigid cylinder. The container is initially placed in boiling water. It is quickly removed and placed in ice-water bath. Draw this thermodynamic process on a PV diagram. If the question change to An amount of

    asked on January 28, 2017
  35. Physics

    Three vessels have different shapes, but the area of their bottom surface is the same, and all three are filled with water with the same depth (1.|_| 2.\_/ 3./_\ ). Rank the magnitudes of the net forces exerted by the water on the bottom surface.

    asked on January 22, 2017
  36. Math

    I don't understand stand this 20y+1.50x=?????

    asked on November 10, 2016
  37. Social Studies

    How were the economies of the Nothern and Southern states different? How were they the same?

    asked on November 3, 2016
  38. I need help, I'm stuck...what is the correct answe

    The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 0 4 2 5 2 6 1 7 2 8 3 9 0 10 4 The mean score on this test is: 6.5 The median score on this test is: 7.5

    asked on October 24, 2016
  39. Frequency-Math

    The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 0 4 2 5 2 6 1 7 2 8 3 9 0 10 4 The mean score on this test is: The median score on this test is

    asked on October 23, 2016
  40. 6th grade math

    A camera is capable of snapping three fourts of a pic per second. How long will it take the camera to snap 6 pictures?

    asked on October 17, 2016
  41. Geology

    Which of the following is consistent with the plate tectonic theory? Which of the following is consistent with the plate tectonic theory? A. Lithosphere convection drives mantle movement. B. As a plate sinks into the asthenosphere, it pulls the trailing

    asked on October 16, 2016
  42. Math

    A population of 41,250 increases each year by 2%

    asked on September 23, 2016
  43. Physics

    A person driving her car at 45km/h approaches an intersection just as the traffic light turns yellow. She knew that the yellow light lasts only 2s before turning red,and shi is 28m away from the near side of the intersection. Should she try to stop,or

    asked on September 17, 2016
  44. Adding intergers and their application

    If the temperature was 55 degrees at 3pm what is the temperature at 11pm

    asked on September 15, 2016
  45. college algebra

    A study found that athletes who rested after exhausting exercise had half life of lactic acid removal about 23 minutes. How long would it take to remove 90% of the lactic acid?

    asked on July 3, 2016
  46. Math

    How do I write the equation for this: sum of ten and nineteen

    asked on June 25, 2016
  47. Math

    How do I write the equation for this: sum of ten and nineteen

    asked on June 25, 2016
  48. QUS 103

    A locomotive of mass 20000kg is traveling at a speed of 54km/hr on a straight track.if a breaking force of 250N per turn is applied .how far will the locomotive travel before being brought to rest? My solution:v=0 u=15m/s S=? F=250 M=20000 F=ma

    asked on June 14, 2016
  49. history

    What was the main goal of Greek colonization in the archaic period

    asked on June 10, 2016
  50. math

    car gets 19 miles to the gal at let's say $3 per gal, taking an 8.5mi trip. How much does this trip cost?

    asked on June 4, 2016

    Imagine a pasture in a small town with grazing sheep owned by several farmers. Every farmer profits by increasing the number of sheep he has on the pasture. However, the pasture can hold only so many sheep before it runs out of grass for the sheep to eat.

    asked on May 20, 2016
  52. Algebra

    How do I solve this? A plane flying the 3458-mi from New York City to London has a 50-MPH tailwind. The flight's point of no return is the point at which the flight time required to return to New York is the same as the time required to continue to London.

    asked on May 9, 2016
  53. Math

    Federico needs to frost 36 cupcakes for a party. He has already frosted 23 cupcakes and wants to know how many more he has to frost. He writes the following two equations to represent the problem, but does not know which equation is correct: 23 + c = 36 36

    asked on April 25, 2016
  54. math

    In triangle XYZ,A is the midpoint of YZ. The bisector of the exterior angle at X of XYZ cuts YZ produced at B. The line through A parallel to XB, cuts XY at P and XZ produced at Q. 1. PY= QZ

    asked on April 25, 2016
  55. MATH

    What would be the circumference of a cylinder that has a height of 8 inches and a radius of 1.6?

    asked on April 25, 2016
  56. math

    The area of a rectangular prism is 93.5 inches The height of the prism is 8 inches and the width is 2.5 inches I need help in finding the length of the rectangular prism

    asked on April 23, 2016
  57. Algebra

    TeaPots n Treasures sells loose Oolong tea for $2.15 per ounce. Donna mixed Oolong tea with shaved almonds that sell for $0.95 per ounce to create the Market Street Oolong blend that sells for $1.85 per ounce. One week, she made 300 oz of Market Street

    asked on April 7, 2016
  58. Math

    A picture frame is 6 1/2 inches wide. The ratio of the length of the frame to the width is 3:2. What is the length of the frame in inches?

    asked on April 7, 2016
  59. english composition ll

    Which of the following best illustrates a positive feedback loop?

    asked on April 6, 2016
  60. Physics

    In the series circuit, if the current through R1 is 1.5 A, what is the current through R2? 1. Unable to determine 2. 1.5 A 3. 1 A 4. 0.5 A 5. 3 A

    asked on February 24, 2016
  61. Physical sciences

    Two forces A and B act at a point O. A=30 N at 60 degree and B= 40 N at 120 degree, relative to x-axis. Calculate the magnitude and direction of the resultant force using the method of perpendicular components.

    asked on January 26, 2016
  62. Language arts

    Change possessive to it's longer form. Paul rings the church bells at a moment's notice.

    asked on January 21, 2016
  63. English

    How would I change this sentence to possessive long form? Paul rings the church bells at a moment's notice.

    asked on January 21, 2016
  64. Language arts

    How would I change this sentence possessive to long form? Paul rings the church bells at a moment's notice.

    asked on January 21, 2016
  65. College algebra

    Show me how to solve x^4-1=0?

    asked on January 19, 2016
  66. Math

    Measuring across a 14 inches how many square inches is in the circle

    asked on January 15, 2016
  67. maths

    A bag contains six blue and 4 red balls ,3 balls are drawn at random replacement what is expected no.of red balls that can be drawn?

    asked on December 13, 2015
  68. chemistry

    ΔH°rxn is -114.14 kJ/mol. Calculate ΔH°f of gaseous nitrogen monoxide, given that ΔH°f of NO2(g) is 33.90 kJ/mol.

    asked on December 7, 2015
  69. Math

    25% of my candies are chocolate candiea i had 25 chocolate candies. How many candies did i have altogether?

    asked on November 17, 2015
  70. science

    Saturn rotation and revolution compared to earth

    asked on November 1, 2015
  71. math

    Jessica left the mall and drove toward the desert at an average speed of 40 mph. Shreya left one hour later and drove in the same direction but with an average speed of 60 mph. How long did

    asked on November 1, 2015
  72. chemistry

    Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2•9H2O.

    asked on October 27, 2015
  73. math

    A car can travel 436 miles on 17 gallons of gas. How far can it go on 22 gallons of gas?

    asked on October 12, 2015
  74. Personal Finance

    Would you prefer a fully taxable investment earning 13.8 percent or a tax-exempt investment earning 10 percent? assume a marginal tax rate of 28 percent.

    asked on October 7, 2015
  75. Chemistry

    . Show a chemical reaction by which hardness is added to water that also explains the formation of caves in limestone formations?

    asked on October 6, 2015
  76. Poetry

    What is rhyme scheme? (1 point_ The stressed and unstressed syllables within a poem a type of poetry that has no rhyme, but no rhythm (or patter of lines that rhyme within a poem) a poem that has a rhyming meter a poem consisting of ten syllables I think

    asked on September 24, 2015
  77. Social Studies Native Americans

    How did the Native American groups of the northern west coast adapt to their environment? a: they built their homes out of a sun dried brick called Adobe b: they had a nomadic culture, moving there teepees from place to place c: they used tree bark to make

    asked on September 9, 2015
  78. Social Studies

    Where was the native American population density higher in 1500? A.Greenland 2. Caribbean islands 3.Present day Florida 4.Present day California CAN SOME HELP PLEASE :))

    asked on September 9, 2015
  79. Organic Chemistry

    Consider the crystallization of sulfanilamide from 95% ethyl alcohol. If impure sulfanilamide is dissolved in the minimum amount of 95% ethyl alcohol at 40°C rather than 78°C (the boiling point of ethyl alcohol), how would this affect the percent

    asked on September 8, 2015
  80. Math and exopents

    Given w = 10. w + w (12 - 2*2 * 3) * 7? Can some one help? the answers are: 73 12 6 3 but none of my calculations are 73, 12, 6 or 3 :(

    asked on September 6, 2015
  81. Math

    PLEASE HELP What is 6x3 / 9 - 1? I got 6 x 3 = 18 / 9 - 1 = 1 But for the answers it only 2 3 5 6 no 1 :((

    asked on September 6, 2015
  82. Spelling

    Does the word swimming have any silent letters? Is the second letter m silent?

    asked on September 2, 2015
  83. Differential calculus

    The voltage across the plates of a capacitor at any time t seconds is given by V=Ve -t/CR, where V,C and r are constants. Given V = 300 Volts, C =0.12*10-6 F and R = 4*10 6 ohms Find the initial rate of change of voltage and the rate of change of voltage

    asked on June 30, 2015
  84. math

    A rectangular dog pen that has the greatest possible area within a budget of 50$.A pen needs at least one gate for a dog. Fencing is $1.00 per foot, fence posts are $2.00 each and gates (3 feet wide) are $5.00 each. what is the area of a pen? pls help me

    asked on May 21, 2015
  85. physics

    a softball is thrown at a speed of 40 miles per hour in a course that makes an angle of 60 degrees with the positive x axis. what is the initial speed in the horizontal direction?

    asked on May 18, 2015
  86. Maths- Please help

    How do i work out the mass of a flywheel. I am given the density as 7500kg/m3, a 500mm diameter and a 10cm thickness. Please help

    asked on April 19, 2015
  87. science

    A car,mass of 1500kg,accelerates at 2m/s from rest. Find 0-60mph time, use 1 mile=1613m

    asked on April 19, 2015
  88. chemistry

    What is the volume of dry O2 gas at STP, if it had a volume of 5.00 L at 103 kPa and 300 K?

    asked on April 15, 2015
  89. chemistry

    Consider the reaction 2 NO2 (g) ⇌ 2 NO (g) + O2 (g). If the initial partial pressure of NO2 (g) is 3.0 bar, and x is the equilibrium pressure of O2 (g), what is the correct equilibrium relation?

    asked on March 22, 2015
  90. trapezoidal method

    dy dt = 1 + (t − y)^2, t ∈ [2, 3], y(2) = 1 use a step size of h = 1 and the Trapezoidal method to calculate by hand a numerical value for Y1 (≈ y(t = 3)).

    asked on March 10, 2015
  91. Geometry

    A red cross helicopter takes off and flies 75km at 20degree south of west. There it's drops off some relief supplies. It then flies 125 km at 10 degree west of north to pick up three medics. A. Make an accurate drawing of the two vectors decribed? B. draw

    asked on March 10, 2015
  92. math

    18*5 1/16=

    asked on March 4, 2015
  93. math

    5*5 1/16=

    asked on March 4, 2015
  94. Chemistry

    calculate the density of 50.0 g of gold that occupies a volume of 2.59 mL.

    asked on March 3, 2015
  95. Simultaneous equations

    3x-14y=O and x-4y+1=0

    asked on March 1, 2015
  96. logic and design

    algorithm for waking in the morning, making and eating breakfast, I don't feel this is enough for my teacher can you help me. Idon't know if i have enough code start get up while not awake drink coffee endwhile if temperature < 65 then wear sweater else

    asked on January 30, 2015
  97. Physics

    a rectangular box of negligible mass measures 5m long,1m wide and 0.5m high. How many kilograms of mass can be loaded into the box before it will sink in a freshwater lake?

    asked on January 6, 2015
  98. Math

    A carton contains 1 8/9 liters of apple juice. Rosalia drinks 1/6 liter of the juice every day. How much apple juice is left in the carton after a week?

    asked on December 9, 2014
  99. physics

    If an atom has an electron in the n = 5 state with ml = 3, what are the possible values of l?

    asked on November 24, 2014
  100. accounting

    which is an operating expense a salaries expense b payroll expense

    asked on November 22, 2014


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