Questions Asked in April 2014

Most Popular Questions of April 2014

  1. Ed tech- Plz, plz help

    The Second Industrial Revolution was not just marked by new inventions. New business practices were invented that transformed America’s economy. Between 1869–1910, the value of American manufacturing rose from $3 billion to $13 billion. The steel

    asked by Anonymous on April 12, 2014
  2. math

    1.   Which graph might show the temperature during a 24-hour period?  (1 point) A B C D 2.   Which graph might show the amount of money in a bank account if money is never taken out?  (1 point) A B C D 3.   Which graph might show the amount of

    asked by Danica on April 30, 2014
  3. Educational Technology

    1. Which of the following choices is a strategy that could help with time management? A. Spending most of the day on leisure activities. B. Doing homework in every spare moment. C. Cutting back on sleep. D. Creating a list of tasks to be completed daily.*

    asked by Chris on April 16, 2014
  4. 3 questions~~~

    1. What does the term "fair-use exception" mean? (1 point) to use only material that has never been published the ability to use material made by others for educational purposes an exception to copyright restrictions for images only Educational material is

    asked by Anonymous on April 12, 2014
  5. science

    1. The image above shows the Andes Mountains. Which of the following processes formed this feature? (1 point) (pic of Andes Mountains) Glaciers deposited sediment. Plates converged together to form the mountains. Plates pulled apart and released magma.

    asked by TTR+S<3 on April 24, 2014
  6. English

    1. Imagine you are writing a research paper on social networking sites. Which of the following thesis statements would be the most effective? A. Social networking sites have become incredibly popular in recent years and have millions of members. Many of

    asked by Cassie on April 14, 2014
  7. Math Help Please? c: Thank you :3

    At your summer job with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following methods is most likely to be random? A) You survey customers at the local shopping mall. B)

    asked by X3 ISayRawr on April 10, 2014
  8. Science

    Your are studying an evergreen tree that produces cones. The tree is an? -Angiosperm -Gymnosperm -Gametophyte -Monocot

    asked by Red- Please Help! on April 10, 2014
  9. statistics (10)

    Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,000 and $45,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. What

    asked by Vanessa on April 23, 2014
  10. Chemistry Help Please!!!

    Find Net Ionic equation for hydrolysis , Expression for equilibrium constant (Ka or Kb) and Value of (Ka or Kb) Net Ionic equations I've got NaC2H3O2 == CH3COO^-+H2O -->CH3COOH+OH^- Na2CO3 ==== CO3 + 2H2O → H2CO3 + 2-OH Kb = [H2CO3] [-OH]2 / [CO3]. Kb =

    asked by Ahmed on April 3, 2014
  11. English

    1. How is paraphrasing different from summarizing? A.) Paraphrasing uses quotation marks B.) Paraphrasing only contains the most important details C.) Paraphrasing expresses the same concept with different wording I think it is B or C..? 2. You are writing

    asked by Cassie on April 7, 2014
  12. Math

    The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is the probability a sample

    asked by Vanessa on April 16, 2014
  13. Math help!!!! Thanks in advance!!!!!!!!!!!

    Activity |Boys|Girls| Total Walk|3 |6 Bike| 5| 3 Skateboard 2 | 1 Total 1. How many students chose walking as their preferred method of transportation? 6 3 9 none of these 2. How many total students participated in the survey? 10 20 15 none of these 3.

    asked by MsBadBut on April 3, 2014
  14. Chemistry

    How would the dx2−y2 orbital in the n=5 shell compare to the dx2−y2 orbital in the n=3 subshell? True or False 1.The contour of the orbital would extend further out along the x and y axes. 2. The value of ℓ would increase by 2. 3.The radial

    asked by Kristine on April 24, 2014
  15. probability

    The lifetime of a type-A bulb is exponentially distributed with parameter λ. The lifetime of a type-B bulb is exponentially distributed with parameter μ, where μ>λ>0. You have a box full of lightbulbs of the same type, and you would like to know

    asked by A on April 3, 2014
  16. science

    Running the dishwasher only when it is completely full is an example of? A. recycling resources B. using nonrenewable resources C. reusing resources D. reducing resource use

    asked by CIERRA on April 29, 2014
  17. math (please check answer)

    What type of graph does not show the number of times a response was given? box-and-whisker plot****** line plot stem-and-leaf plot bar graph

    asked by person on April 19, 2014
  18. statistics

    Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The population size is infinite

    asked by Vanessa on April 15, 2014
  19. College Physics

    Can someone check my answers for two and help me with the third? 1) A mass m at the end of a spring of spring constant k is undergoing simple harmonic oscillations with amplitude A. Part (a) At what positive value of displacement x in terms of A is the

    asked by Michelle on April 25, 2014
  20. Chemistry

    Predict how the entropy of the substance is affected in the following processes: a) O2 (g,200 kPa, 300k) --> O2 (g, 100, 300k) b)Br2 (l, 1 bar, 25 degree C) --> Br2 (g, 1 bar, 25 degree C) C)Fe (s, 1 bar, 250 degree C)--> Fe(s, 1 bar, 25 degree C) will

    asked by Alexis on April 20, 2014
  21. Help plz!!!

    Which of the following terms refers to legal protection provided against copying, distributing, performing, or changing both published and unpublished works? intangible property tangible property copyright*** intellectual property 2. What is piracy? the

    asked by Anonymous on April 7, 2014
  22. Math

    For questions 1-2 , simplify each expression. 1.9! a.45 b.362,880 c.265,456 d.125,936 2.25P3 a.12,755 b.14,290 c.13,800 d.18,250

    asked by Shelin on April 30, 2014
  23. English - Help!!

    1. The sharp rock LACERATED her side as she climbed the side of the cliff. bruised sliced scratched wounded I think it's B? Can someone help?

    asked by Sandy East Ward on April 29, 2014
  24. English help

    1. In a citation within a Works Cited page, which of the following should NOT be in italics? A. the title of a book B. the title of an editorial********* C. the title of an encyclopedia 2. You finished writing a research paper on the way modern technology

    asked by Cassie on April 27, 2014
  25. statistics

    A simple random sample of 40 items resulted in a sample mean of 25. The population standard deviation is 5. a. What is the standard error of the mean (to 2 decimals)? b. At 95% confidence, what is the margin of error (to 2 decimals)?

    asked by Vanessa on April 21, 2014
  26. Chemistry

    Calculate ΔG° for the following reaction at 298 K.? A+B --> 2D ΔH° = 775.0 kJ ΔS°=296.0 J/K C --> D ΔH° = 446.0 kJ ΔS°=-218.0 J/K A+B --> 2C ΔG° = ? kJ I know I am suppose to reverse the (C --> D) and add a coefficient of 2 to both the enthalpy

    asked by Alexis on April 20, 2014
  27. math

    Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable boxes he has grouped for

    asked by Anonymous on April 9, 2014
  28. English

    1. Which of the following sentences uses capitalization CORRECTLY? (1 point) A.) You can find the complete list of Senators online. B.) Have you ever read The History of Tom Jones, a Foundling? C.)The Maryland Blue Crabs have become a symbol of the state.

    asked by Cassie on April 15, 2014
  29. Chemistry

    Elemental calcium is produced by the electrolysis of molten CaCl2. a) What mass of calcium can be produced by this process if a current of 7.5 * 10^3 A is applied for 48h? Assume that the electrolytic cell is 68% efficient. b) What is he minimum voltage

    asked by ACDub on April 10, 2014
  30. social studies

    i think its B. South america's ethnic diversity best reflects A. waves of european immigration in the past century. B. Recent influxes of asian and african immigrants . C. Internal migrations among indigenous peoples. D. Ancient migrations of people from

    asked by matt on April 16, 2014
  31. Algebra

    A physics student stands at the top of hill that has an elevation of 37 meters. He throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y = –0.02x² +

    asked by Sandra on April 4, 2014
  32. Probability

    Let Θ be a Bernoulli random variable that indicates which one of two hypotheses is true, and let P(Θ=1)=p. Under the hypothesis Θ=0, the random variable X is uniformly distributed over the interval [0,1]. Under the alternative hypothesis Θ=1, the PDF

    asked by A on April 2, 2014
  33. algebra 1 question pls help!!!

    1. Find the mean, median, and mode of the data set: 15, 16, 21, 23, 25, 25, 25, 39 a.mean = 23.6, median = 25, mode = 24 b.mean = 24, median = 23.6, mode = 25 c.mean = 24.6, median = 24, mode = 25 d.mean = 23.6, median = 24, mode = 25 This is what i got:

    asked by TTR+S<3 on April 13, 2014
  34. math (check answer plz)

    Carol has a collection of 100 stamps the graph below shows the percentage of stamps she has from each country how many more of Carols stamps are from france than from england? France: 24%, England:22%, Norway:29%, Italy:25%.

    asked by person on April 21, 2014
  35. social studies

    PLEASE ANSWER! which most precisely describes the location of Southwest Asia? a) west of India b) south of the Arctic Cirlce c) north of the equator d) east of the Mediterranean Sea

    asked by kaylie on April 28, 2014
  36. math

    what are the mean median mode and range of the data set give the altitude of lake in feet: -12,-9,-14,-39-49,-49,-18, and -43? A. mean=-28.5, median=-29.1, mode=-49, range=40 B. mean=-29.1, median=-49 , mode=-28.5 , range= 41 C. mean=-49 , median=-29.1,

    asked by HELP PLEASE!! on April 22, 2014
  37. Math

    Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your

    asked by Vanessa on April 6, 2014
  38. 7 th Math

    During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula, M = 176 – 0.8A, where M is the maximum heart rate and A is the person’s age. Solve the formula for A. At what age would you have a recommended maximum

    asked by Moby on April 21, 2014
  39. Spanish- Sin a or a

    I have to chose whether or not the sentence needs preposition a or no a (sin a) 1) ¿Conoces__ alguien que organice fiestas de aniversario? 2)Busco__ alguien que me ayude a organizar la mía. 3)Necesito __ un grupo musical que sea bueno. 4) Lo siento, no

    asked by Tina on April 3, 2014
  40. Algebra

    A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y = –0.06x² + 9.6x + 5.4 where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters,

    asked by Sandra on April 3, 2014
  41. new social studies

    1.C 2.A 3.B 4.C 1.Which of the following most contributes to deforestation of the amazon rain forest? A. mining B. lumber miliing C. road construction D. tourism 2.Which of the following is an immediate negative effect of deforestation of the amazon rain

    asked by matt on April 7, 2014
  42. Chemistry URGENT

    A student heated a hydrated salt sample with an initial mass of 4.8702 g, After the first heating, the mass had decreased to 3.0662 g (two part question) 1. if the sample was heated to constant weight after reheating, what is the minimum mass that the

    asked by jazz on April 26, 2014
  43. Math

    The public library has an aquarium in the shape of arectangle prism . The base is 6 feet by 2.5 feet and the height is 4 feet . How many square feet of glass were used to build the aquarium (the top of the aquarium is open).

    asked by Anabelle on April 26, 2014
  44. Educational tech-1 question

    Use the text below written by Connections Education in 2012 to answer the following questions. The Second Industrial Revolution was not just marked by new inventions. New business practices were invented that transformed America’s economy. Between

    asked by Anonymous on April 8, 2014
  45. Math

    Which situation could you graph without connecting the points? the height of a hot-air balloon as it climbs the amount of electricity used by a refrigerator over time

    asked by Anonymous on April 21, 2014
  46. Science - Check my answers

    1. Which of the following statements best defines tides? when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours **** the rise of ocean water that occurs 12 times a day a giant wave that can

    asked by Helena on April 3, 2014
  47. General Chemistry

    The problem is: Calculate the standard free-energy change for the following reaction at 25 degrees Celsius. 2Au^+3(aq) + 3Cr(s)-> 2Au(s) + 3Cr^+2(aq) I worked it out, getting half reaction: Au^3+ + 3e- -> Au; E = 1.498 Cr^3+ + 3e- -> Cr; E = -0.74 Ecell =

    asked by Tiffany on April 14, 2014
  48. math

    Suzanne wants to put a fence around her square garden. If the garden covers an area of 100 ft2, how many feet of fencing does she need? (1 point) 20 ft 40 ft 10 ft 400 ft

    asked by zuha on April 2, 2014
  49. Equation help 2 questions

    How many real number solutions does the equation have y=-4x^2+7x-8 none one two infinite How many real number solutions does the equation have y=3x^2+18x+27 none one two infinite Thank you!

    asked by Alex on April 2, 2014
  50. chemistry

    Where possible, classify these systems as reactant-favored or product-favored at 298 K. If the direction cannot be determined from the information given, classify the reaction as "Insufficient information". a)2A(g) + 3B(g) -->4C(g) delta H = -95kJ b)2A(g)

    asked by Sophie on April 20, 2014
  51. math (cant figure it out)

    Grade 7 students were surveyed to determine how many hours per day they spent on various activities. Eating is 8%, homework is 8%, sleeping is 33%, TV is 13%, socializing 13%, and school is 25%. About how many hours per day altogether were spent on

    asked by person on April 18, 2014
  52. English - Check these?

    Can someone help me check these? 1. The main purpose of a research paper is ____________. (1 point) to verify information to expand a body of knowledge*** to persuade the reader to commit to a course of action 2. Which of the following is NOT a guideline

    asked by Sandy East Ward on April 30, 2014
  53. Calculus Help Please!!!

    A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 40 cm/s. Find the rate at which the area within the circle is increasing after each of the following. after 1 s = after 3 s = after 7 s =

    asked by Tim on April 2, 2014
  54. Science

    Use Newton’s first law of motion to explain how wearing a seat belt in a moving car could help prevent injury.

    asked by Cindy on April 7, 2014
  55. Algebra

    A community group is planning the expansion of a square flower garden in a city park. If each side of the original garden is increased by 9 meters, the new total area of the garden will be 169 square meters. Find the length of each side of the original

    asked by Sandra on April 4, 2014
  56. Algebra - HELP!!!

    Can someone help me and check these? 1. Graph the function and identify the domain and range. y = –.5x² (1 point)graph *domain: (–∞, ∞) range: [0, ∞) graph domain: (–∞, ∞) range: (–∞, 0] graph domain: (–∞, ∞) range: (–∞, 0]

    asked by Sandy on April 22, 2014
  57. Algebra

    A catapult launches a boulder with an upward velocity of 184 feet per second. The height of the boulder, (h), in feet after t seconds is given by the function h(t) = –16t² + 184t +20. How long does it take the boulder to reach its maximum height? What

    asked by Sandra on April 3, 2014
  58. business Math

    Lane French had a bad credit rating and went to a local cash center. He took out a $100 loan payable in two weeks at $115. What is the percent of interest paid on this loan? (Do not round intermediate calculations. Round your answer to the nearest whole

    asked by marie on April 2, 2014
  59. Grammar Practice - Help!

    Can someone check these? Choose the item that is correctly capitalized for questions 1–6. 1. (1 point) our family doctor** our family Doctor 2. (1 point) Senator Barrientos** senator Barrientos 3. (1 point) aunt Ruthie Aunt Ruthie** 4. (1 point) the

    asked by Sandy East Ward on April 30, 2014
  60. math

    a gas station charges $2.19 per gallon of gas. use function notation to describe the relationship between the total cost C(g) and the number of gallons purchased g.

    asked by steve on April 13, 2014
  61. Chemistry

    A voltaic cell utilizes the following reaction: 2Fe3+(aq)+H2(g)→2Fe2+(aq)+2H+(aq). What is the emf for this cell when [Fe3+]= 3.70M , PH2= 0.95atm , [Fe2+]= 7.0×10−4M , and the pH in both compartments is 4.05? Express your answer using two significant

    asked by Rebecca on April 14, 2014
  62. Chem Please Help

    If a 2.30 M sample of A is heated to 500 K, what is the concentration of B at equilibrium? A 2B Kc= 5.04x10^-6 at 500k

    asked by Anonymous on April 1, 2014
  63. Probability

    The random variable X is uniformly distributed over the interval [θ,2θ]. The parameter θ is unknown and is modeled as the value of a continuous random variable Θ, uniformly distributed between zero and one. Given an observation x of X, find the

    asked by A on April 3, 2014
  64. social studies check answers

    1.D 2.A 4.C 1.“Along the southern coast of Brazil the central plateau descends in high, steep escarpments. It towers over the waves and moves back in ridges, leveling off from the peaks of the coastal ranges … As it continues along to the northern

    asked by matt on April 5, 2014
  65. social studies

    ANSWER! PLEASE!! which of the following most contributed the rise of Sumer? a. farming b. military power c. isolated location d. trade

    asked by kay on April 28, 2014
  66. Chemistry

    For the following electrochemical cell Cu(s)|Cu2 (aq, 0.0155 M)||Ag (aq, 3.50 M)|Ag(s) write the net cell equation. I presume it is Cu + 2Ag^2+ --> Cu2+ + 2Ag Calculate the following values at 25.0 C using standard potentials as needed. Eocell = ? dGorxn =

    asked by Aki on April 5, 2014
  67. chemistry

    The boiling point of another member of this homologous series was found to be 309 K \rm K. What is the likely molecular formula for this compound?

    asked by Tiff on April 28, 2014
  68. Check English Answers

    Please check my answers: 1)pathos 2)thesis statements 3)Lincoln promises retribution for war 4)Ethos 5)Theme 1)"On the occasion corresponding to this four years ago all thoughts were anxiously directed to an impending civil war. All dreaded it, all sought

    asked by AMK on April 14, 2014
  69. Chemistry

    Given the following half-reactions and associated standard reduction potentials: AuBr−4(aq)+3e−→Au(s)+4Br−(aq) E∘red=−0.858V Eu3+(aq)+e−→Eu2+(aq) E∘red=−0.43V IO−(aq)+H2O(l)+2e−→I−(aq)+2OH−(aq) E∘red=+0.49V

    asked by Rebecca on April 14, 2014
  70. Probability

    A defective coin minting machine produces coins whose probability of Heads is a random variable Q with PDF fQ(q)={3q2,0,if q∈[0,1],otherwise. A coin produced by this machine is tossed repeatedly, with successive tosses assumed to be independent. Let A be

    asked by A on April 2, 2014
  71. statistics (7)

    The average cost per night of a hotel room in New York City is $273 (SmartMoney, March 2009). Assume this estimate is based on a sample of 45 hotels and that the sample standard deviation is $65. a. With 95% confidence, what is the margin of error (to 2

    asked by Mia on April 26, 2014
  72. Math

    A basket contains the following pieces of fruit: 3 apples 2 oranges, 2 bannans, 2 pears, and 5 peaches. Jonas picks a fruit at random and does not replace it. Then beth picks a fruit at random. What is the probability that jonas gets a peach and beth gets

    asked by Alexander on April 21, 2014
  73. CALCULUS

    Sketch the region enclosed by the given curves. y = 4/X y = 16x, y = 1X/16 x > 0 and the area between the curves

    asked by LAUERN PLEASE HELP on April 12, 2014
  74. nursing/dosage

    The health care provider prescribed the adjustment of the IV hourly rate based on the nasogastric tube (NGT) output q4h (every 4 hours) for a client who had abdominal surgery yesterday. From 12:00pm to 4:00pm the NGT output was 240ml and the IV was infused

    asked by Stephanie on April 29, 2014
  75. Math (check answer)

    1.never the difference of two positive integers is _____ negative. A.always B.sometimes C.never

    asked by matt on April 2, 2014
  76. math

    Find the interest due to the bank on a loan of $1,000 at 7.5% for 280 days.

    asked by Anonymous on April 12, 2014
  77. Chemistry

    A buffer solution is prepared by mixing 50.0 mL of 0.300 M NH3 with 50 mL of 0.300 NH4Cl. The pKb of NH3 is 4.74. NH3 + H2O-> NH4+ +OH- 7.50 mL of 0.125 M HCl is added to the 100 mL of the buffer solution. Calculate the concentration of NH3 and NH4Cl for

    asked by Dee on April 10, 2014
  78. Physics

    One end of a uniform 3.20-m-long rod of weight Fg is supported by a cable at an angle of θ = 37° with the rod. The other end rests against the wall, where it is held by friction as shown in the figure below. The coefficient of static friction between the

    asked by Joe on April 5, 2014
  79. Chem

    1) Which solution will have the lowest OH- A) Na2CO3 B) NaHCO3 C) NaCl D) NaHSO4 E) NH4Cl 2) Which solution will be the strongest base? A) Na2CO3 B) NaHCO3 C) NaCl D) NaHSO4 E) NH4Cl 3) Which aqueous solutions are acidic? A) Na2CO3 and NaHCO3 B) NaCl and

    asked by Timothy on April 5, 2014
  80. Statistics Emergency please

    People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a)What is

    asked by Vanessa on April 17, 2014
  81. science

    which of the following is used to make biomass fuel? A. coal B. natural gas C. plants and animals waste D. petroleum

    asked by help plzz on April 29, 2014
  82. social studies please help

    what sis franklin roosevelt do to reduce the effects of the depression the day after he became president? a. he closed the stock market to prevent further losses b. he signed a bill to provide money to industries so they could reopen and put people back to

    asked by what on April 8, 2014
  83. English

    1.) Anyone can publish information on the Internet without fact-checking it. A.) True************************ B.) False 2.) Public records are most likely to contain valid information than secondhand reports. A.) True******************************** B.)

    asked by Cassie on April 19, 2014
  84. Math

    During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M=176-0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended heart rate in beats per

    asked by Anonymous on April 25, 2014
  85. English III

    Lesson 6.07 Letter to a Citizen of Kentucky, an excerpt Executive Mansion, Washington, April 4, 1864. A. G. Hodges, Esq., Frankfort, Ky. My Dear Sir: You ask me to put in writing the substance of what I verbally stated the other day, in your presence, to

    asked by MAN on April 10, 2014
  86. Probability

    Alice has two coins. The probability of Heads for the first coin is 1/3, and the probability of Heads for the second is 2/3. Other than this difference, the coins are indistinguishable. Alice chooses one of the coins at random and sends it to Bob. The

    asked by A on April 2, 2014
  87. Chemistry

    How much ice (in grams) with the temperature of 0∘C would have to melt to lower the temperature of 355mL of water from 26∘C to 4∘C? (Assume the density of water is 1.0 g/mL.)

    asked by Eddie on April 7, 2014
  88. Chemistry

    If delta H°rxn and delta S°rxn are both positive values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is a)enthalpy driven to the left. b)entropy driven to the right. c)entropy driven to the

    asked by Alexis on April 20, 2014
  89. social studies

    PLEASE CHECK 1. what was one immediate effect of the Cold War on South Carolina and the nation? a. travel for pleasure was drastically reduced b. it was more difficult to obtain goods from foreign countries* c. the united states and germany continued to be

    asked by what on April 23, 2014
  90. Statistics PLEASE HELP ME!

    The Wall Street Journal reported that automobile crashes cost the United States $162 billion annually (The Wall Street Journal, March 5, 2008). The average cost per person for crashes in the Tampa, Florida, area was reported to be $1599. Suppose this

    asked by Vanessa on April 22, 2014
  91. Chemistry

    Consider the following reaction. A(aq) (Two way arrows) 2B(aq) Kc = 7.94*10^-6 at 500K If a 2.70 M sample of A is heated to 500K what is the concentration of B at equilibrium?

    asked by Janavi on April 5, 2014
  92. Math

    1.Which explains why the sequence 216, 12, 2/3 is arithmetic or geometric? A.The sequence is geometric because it decreases by a factor of 6. B.The sequence is arithmetic because it decreases by a factor of 6 C.The sequence is geometric because it

    asked by Anonymous on April 25, 2014
  93. chem

    A sample of oxygen gas was collected via water displacement. Since the oxygen was collected via water displacement, the sample is saturated with water vapor. If the total pressure of the mixture at 26.4 °C is 725 torr, what is the partial pressure of

    asked by Natalie on April 15, 2014
  94. Science

    A______________________ is a tool used to capture the energy in sunlight. Recycling aluminum cans and taking shorter showers are two ways to practice the ________________________ of natural resources. Some plastics are made from corn. These plastics are

    asked by Anonymous on April 1, 2014
  95. probability

    Let Sn be the number of successes in n independent Bernoulli trials, where the probability of success for each trial is 1/2. Provide a numerical value, to a precision of 3 decimal places, for each of the following limits. You may want to refer to the

    asked by juanpro on April 22, 2014
  96. science

    Glucose is a simple sugar made up of carbon, hydrogen, and oxygen. What kind of molecule is glucose? A. Glucose is protein. B. Glucose is a nucleic acid. C. Glucose is an organic molecule. D. Glucose is an inorganic molecule

    asked by help plzz on April 30, 2014
  97. Physics

    An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.5× 104 kg, and the force causes its speed to change from 7000 to 5000m/s. (a) What is the work done by the

    asked by Elle on April 4, 2014
  98. 6th Grade Science - Help

    Which of Earth's spheres has the most mass? 1. atmosphere 2. hydrosphere 3. geosphere 4. biosphere Is it Biosphere?

    asked by Helena on April 5, 2014
  99. Chemistry

    The mechanism for the reaction described by NO2(g) + CO(g) ---> CO2(g) + NO (g) is suggested to be (1) 2NO2(g) --->(k1) NO3(g) + NO (g) (2) NO3(g) +CO(g) --->(k2) NO2(g) + CO2(g) Assuming that [NO3] is governed by steady-state conditions, derive the rate

    asked by Mia on April 24, 2014
  100. Math ~ Check Answers ~

    1. There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P (red). Write the probability as a fraction in simplest form, a decimal, and a percent. a.) 4/31, 0.129, 12.9% b.) 4/35, 0.114,

    asked by Chloé on April 21, 2014