1. Chemistry

    The rate constant for this first order reaction is 0.0470 s-1 at 400 C. A TO Products After how many seconds will 11.0% of the reactant remain?

    asked by Josh on July 16, 2011
  2. life orientation

    Indentify three study field/career paths in order of preference and provide two reason for each choice

    asked by nomsa on March 12, 2014
  3. Circuits2

    what value of resistance should be placed.in parallel with 50microfarad capacitor in order to have a total power factor of 0.8 on a 6p-cycle ac system?

    asked by Student on March 26, 2018
  4. Algebra

    manuella likes pepperoni, mushroom, and extra cheese on her pizza. how many different pizzas can she order with one, two, or all three of these toppings?

    asked by Ed on March 3, 2017
  5. Math 109

    How many ways can the manager of a baseball team make up the batting order, assuming the pitcher bats last?

    asked by Anonymous on November 4, 2012
  6. physics

    What force must be exerted on a car of mass 1825 kilograms in order to make it accelerate at 26 meters per second per second?

    asked by heather on February 5, 2011
  7. Physics

    The established value for the speed of light in a vacuum is 299 792 458 m/s. What is the order-of-magnitude of this number?

    asked by Olivia on March 8, 2011
  8. Math

    Which of the following expressions should be placed in each set of parentheses below in order to solve the equation by completing the square? x2+6x+___=15+____ a.3/2 b.3 c.6 d.9

    asked by Ashley on December 28, 2016
  9. SCI

    Please help with the answer. What process helps an organism break down nutrients from its food in order to gain energy?

    asked by HELP!!! on September 26, 2018
  10. 7th grade math

    How do you arrange the numbers 2 4 5 and 6 ans insert the symbols "-" and "x" in a way that u follow PEMDAS/ order of operations to get the answer 8

    asked by Diana on September 20, 2012
  11. Introductory algebra

    For homework I must use the numbers 1,2,3,4,5,6,7,8,and 9 in that order with any of the 4 operations (+,-,*,/) and the problem must equal 100. I cannot figure it out and it is due tommorow!!!! Please help!!!

    asked by Need an A on October 10, 2010
  12. Chemistry -Dr.Bob222

    Arrange the solutions in order of increasing acidity. NaCl, NH4Cl, NaHCO3, NH4CLO2, NaOH

    asked by Nevaeh on April 21, 2016
  13. physical ed sports

    name the six positions on a volleyball court IN SERVING ORDER(1st-6th)beginning with the first player serve.

    asked by Kim on October 6, 2010
  14. Math

    Hi I am not good with math. Please tell me how to differentiate mixed numbers, order of operation,subtraction, divide and multiplication etc. Thanks!

    asked by Leah on September 14, 2012
  15. Math

    Come pleat the table to represent each part of the formula. The data values have been put in ascending order. ---- X, (X, - x) 2 30 ? 32 ? 33 35 49 50 50 71 73 77

    asked by Ashley salisbury on March 4, 2015
  16. Chemistry

    What mass of octane must be burned in order to liberate 5510 kJ of heat? ΔHcomb = -5471 kJ/mol.

    asked by nicole on March 26, 2011
  17. Chemistry

    The half-life (t1/2) of a first order reaction is 0.100 s. What is the rate constant? a. 6.93 s-1 b. 0.693 s-1 c. 0.0693 s-1 d. 0.144 s-1 e. 3.01 s-1

    asked by Shines on December 6, 2013
  18. Electrical Switches

    What are the factors you consider when buying an electrical switch? I want to know what different people consider in order to obtain a good selection procedure. Thanks!

    asked by Claire on November 25, 2010
  19. History

    Can somebody put all of the events in American history (US) in order for me from The first English settlers in Massachusetts in 1620. Please help me. Jiskha

    asked by Jamie on September 25, 2018
  20. Social worker

    Identify three study fields/career paths in order of preference and provide two reasons for each choice

    asked by Ndumi on April 10, 2014
  21. math

    please help me to perform the indicated operation.15-20/(3)(5)-15 You need additional parentheses or brackets to clarify the order of operations. For example, 15-{20/[(3)(5)]}-15 = 20/15 = 4/3 (15-20}/[(3)(5])-15 = -15 1/3 15-[20/(3)](5)-15 = 100/3

    asked by carmen on April 23, 2007
  22. 7th grade math

    The question is simplify -9=1(36divided by 2 x3-4) I did -9+1(18x3-4) _9+1(54-4) -9=1(50) -9+50 41 Is this correct I did this with a friend and we both got different answers. Maybe I di the wrong order of operation?

    asked by EN on November 13, 2012
  23. Chemestry

    Express condense order of increasing energy as a string without blank between orbit Barium Element

    asked by Meyanna on February 8, 2011
  24. statistics

    In how many ways can letters be chosen from , assuming that the order of the choices doesn't matter and that repeats are not allowed?

    asked by LJ on October 5, 2017
  25. Chemistry

    Predict the order of increasing vapor pressure at a given temperature for the following compounds: CH3CH2CH2CH2OH HOCH2CH2CH2OH CH3CH2OCH2CH3

    asked by Lauren on February 3, 2008
  26. chemistry

    If compound x has a first-order half-life of 24 seconds, how long would you have to wait for only 33% of the original material to be left?

    asked by reginajones on February 17, 2011
  27. Chemistry II

    Arrange the following 0.10M solutions in order of increasing pH: a. Nacl b. NH4CL C. HCL D. NaCH3CO2 e. KOH

    asked by Liz on April 30, 2013
  28. physics

    What is the angular separation between the first-order images on either side of the central maximum? Answer in units of degrees.

    asked by Anonymous on November 19, 2013
  29. social studies

    List these power sources in chronological order: 1.Steam 2.Animal 3.Hand 4.Water 5.Electric

    asked by squadhunter on December 17, 2014
  30. Physics

    You can run 8.8m/s,20% faster than your brother. How much head start should you give him in order to have a tie race over 110m?please help:(

    asked by Sarah on March 26, 2015
  31. Physics

    An automobile tire is rated to last for 50000 miles. To an order of magnitude, through how many revolutions will it turn over its lifetime?

    asked by Anonymous on October 3, 2012
  32. math

    How many ways are there to write 7 element data lists of integers in # order with Median 21, mean 20 range 10 and the Mode 22 and what are they?

    asked by astin on March 27, 2011
  33. English

    I have a 60 in English and I need to take 2 tests. (they count as 45% of our grade) I really want to get at least an 82, does anybody know what grades I have to make in order to bring it up? I would really appreciate for a fast reply. Thanks!

    asked by Madison on May 18, 2016
  34. math

    In each of the following, order the decimals from greatest to least: a) 13.4919, 13.492, 13.49183, 13.49199 b) -1.453, -1.45, -1.4053, -1.493

    asked by Anonymous on September 19, 2010
  35. math

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

    asked by Stacey on May 8, 2011
  36. Chemistry

    In the first order, reaction A yields products, A=0.400M initially and 0.250M after 15.0 min. What is the value of the rate constant, k?

    asked by Jeremy on January 21, 2013
  37. BUS 401

    if a firm just paid a dividend equal to $4.00 a share, then for the WACC, in order to find the cost of equity, $4 should be

    asked by rebecca sanchez on June 26, 2016
  38. chem 121

    arrange in order of increasing vapor pressure lowest to highest Nacl, ch4 ch3ch2oh c

    asked by ngugi on July 10, 2010
  39. Analytic Geometry

    simplify the given equation and graph xy-x+y=0 (it is on rotation of axes. please answer in order for me to have a guide in my studies tonight)

    asked by Earl John on May 3, 2016
  40. Integrated Math 1

    Find the difference of the polynomials below. Write your answer in descending order. (x3 + 2x2 + 5x + 7) - (3x3 - 2.5x2 + 5x + 5)

    asked by Tifini on July 16, 2012
  41. Chemistry

    In gas chromatography, what would be the order of the retention times for your mixture (hexane and toluene)? What is the basis for your answer?

    asked by Soojung on September 3, 2009
  42. computer programming

    Design the pseudocode for a program that allows a user to enter 10 numbers, then displays them in the reverse order of their entry

    asked by Marc on February 22, 2017
  43. Music

    I need help with this. Ms. Sue please help me. The interval of an octave is how many steps from the given note? A. one B. eight C. three D. six*** Which set of intervals is in order from smallest to largest? A. M2, A4, P4 B. P1, m2, P5 C. M3, P5, d5 D. P4,

    asked by Tech_Nic on October 11, 2018
  44. Need help with study technique

    Can someone help me think of a sentence to help me remember the letters D,K, P, C, O, F, G, S, in that order. I am tryin to memorize the organizations of microorganisms, Domain, Kingdom and so forth. Thanks!

    asked by amy on June 23, 2010
  45. chemistry

    How many grams of Urea(CH4N2O) have to be dissolved into 253g of Chloroform in order for the boiling point to increase by 3.1C?

    asked by regina on December 5, 2010
  46. office finances

    which of the following would require a cash receipt a.credit memo b.purchase order c.check d.refund my answer is b

    asked by susue on December 28, 2013
  47. Life Orintation

    i dentify three study field/career paths in order of preference and provide two reasons for each choice

    asked by Sicelo Innocent Nkosi on March 16, 2014
  48. Ordering decimals

    What is the easiest way to order a ten decimal numbers from greatest to least or visa versa. This is from a 4th grader... Thanks...

    asked by Marlo on May 4, 2008
  49. Chemistry

    The order is given for an injection of 120mg of x and 10mg of y. On the shelf you have 50mg/mL of x and 75mg/mL of y. what will be the total volume in your syringe?

    asked by John on January 27, 2011
  50. Statistics

    True or False In order for the distribution of sample means to be normal, it must be based on samples of at least n = 30 scores.

    asked by Lyndyc on December 12, 2013
  51. math

    let y1

    asked by assma on May 19, 2015
  52. Math (please check my answer!!)

    What other information must be given in order to be able to prove the two triangles congruent by ASA? i.imgsafe(.)org/c64c59dad9.jpg 1. T=S 2. P=S 3. P=R

    asked by Sami on November 28, 2016
  53. statistic

    let y1

    asked by assma on May 27, 2015
  54. Science

    Place the following words into the in order gametes, sporophyte, gametophyte, and zygote. Explain how the terms are related.

    asked by Urgent! on April 12, 2017
  55. Chemistry

    Selenium Express your answer in condensed form, in order of increasing orbital energy. For example,[He]2s^22p^2.

    asked by Chironjit on November 26, 2012
  56. chemistry

    what is the formula to determine the mass of propane that must be combusted in order to produce 188.23kJ of energy?

    asked by janet on August 11, 2012
  57. chem

    Arrange the following 0.10 M solutions in order of increasing H+ : HClO4 , H2SO4, NH4Br , KCN, KBr, KOH

    asked by Kely on April 24, 2011
  58. ap chemistry

    Arrange the following 0.10 M solutions in order of increasing H+ : HClO4 , H2SO4, NH4Br , KCN, KBr, KOH

    asked by stephen on April 24, 2011
  59. computer

    True/False Is the order of mathematical operations applied to most computer languages are not relevant in pseudocode.

    asked by Tyriq on August 17, 2010
  60. math

    assignment for an art class is to complete 4 projects from a list of 6. how many ways can this be done if the order soes not matter?

    asked by joe on June 18, 2010
  61. maths

    find the general solution of the following first order differential equation. dx/dt = t*x + 6*t(exp)-t^2 pls show working

    asked by micheal on October 26, 2011
  62. Health

    In order to make healthy choices you must learn to what risks? A. Ignore B. Advocate For (C.) Evaluate (My Answer) D. Take More

    asked by Ashlie on September 19, 2016
  63. Math

    How much money should Jamie deposit into an account which pays 9%, compounded biannually, in order to have $4,000.00 in 4 years?

    asked by Chris T. Leaf on December 15, 2009
  64. AP Chem

    A first-order reaction has a rate constant of 0.547 min - 1. How long will it take a reactant concentration 0.14 M to decrease to 0.07 M? Not sure how to do this!

    asked by Andrea on March 5, 2018
  65. math

    In order to have $10000.00 in 5 years, how much would a person have to invest if the money will earn 8% interest compounded semiannually?

    asked by kebe on April 1, 2012
  66. operating system

    given that main memory is composed of only three page frames for public use and that a program requests pages in the following order: a,c,b,d,a.c,e,a,c,b,d,e

    asked by festus on January 28, 2016
  67. mATH

    Using order of operations, create a formula that = 8 using four 6's 6 ___ 6 ____ 6 ______6 =8 fill in the blanks. It's the only one we can't figure out without using five 6's (6/6) +(6/6) +6 = 8

    asked by Terry on September 6, 2011
  68. adult education-English

    how do i attack a writing skill in order to persuade your supervisor to make changes to improve office productivity.

    asked by Linda Jones on August 23, 2008
  69. science

    Which sequence shows the correct order of Earth’s geologic time intervals from oldest to youngest?

    asked by Anonymous on May 31, 2017
  70. Life orientation

    Identify 3 courses or study field / career paths in order of preference and provide 2 reason for each

    asked by Tebogo on March 4, 2013
  71. Chemistry

    How much water must be added to 963 g of solid sodium hydroxide needed in order to prepare a 1.50 M solution?

    asked by Anonymous on August 27, 2014
  72. math213

    In each of the following, order decimals from least to greatest a.24,9419, 24.942, 24,94189, 24.94199 b.-34.25, -34.251, -34.205, -34.2519

    asked by Aisha on September 5, 2011
  73. maths

    please help find the general solution of the following first order differential equation. dx/dt = tx + 6t(exp)-t^2 pls show working

    asked by micheal on October 26, 2011
  74. life orientation

    identify three study fields/career paths in order of preference and provide two reasons for each choice

    asked by caroline on March 5, 2014
  75. Health

    nutrition is the process of the body using foods that we eat in order to sustain life true or false

    asked by Chloe on May 27, 2014
  76. maths

    differentiate using product, chain and quotient rule ln x / 5x-7 and e^x / 2x^3 - 1 could you help me out with the first and just point me in the right direction for the first i cant seem to get the steps in the right order and then it gets all muddled

    asked by Amelia on November 7, 2009
  77. Finanace

    If a firm just paid a dividend equal to $4.00 a share, then for the WACC, in order to find the cost of equity, $4 should be

    asked by Anonymous on July 27, 2014
  78. Chemistry

    Arrange the following compounds in order of increasing Boiling point: CH4, CHCl3, CCl4, CH3Cl

    asked by Naaz on January 6, 2016
  79. History

    What did the founding fathers of the United States create in order to ensure that one person did not ever have too much power in the government?

    asked by Marissa on May 29, 2014
  80. physics

    in order to catch a fast moving softball with your bare hand doing this reduce the catching forcebecause the what

    asked by cynthia on February 1, 2013
  81. Business Finance

    A firm has invested in corporate bonds it may engage in a financial futures contract in order to protect itself from what.

    asked by mike on February 14, 2010
  82. chemistry kinetics

    The rate constant is numerically the same for three reactions of first ,second and third order resp. Which reaction should be the fastest and is this for all ranges of concentrations ??

    asked by Gagan on July 12, 2017
  83. LIFE ORIENTATION

    identify three study fields/ career paths in order of preference and provide two reasons for each choice

    asked by LEON Z BRITZ on March 3, 2014
  84. Science

    Design of a fourth order low pass filter with 150 Hz frequency for ecg acquisition

    asked by Madhu on August 19, 2016
  85. Geometry

    Triangle KLM has vertices K (3,2) L(-1,5) and M(-3,-7) write the angles in order from the least to greatest measure show all work

    asked by M on November 12, 2015
  86. English

    How does Shakespeare work loyalty and betrayal into the play King Lear. Context of order vs. chaos?

    asked by Alexis on October 3, 2011
  87. physics

    In order to move a heavy object you must push against it with a larger force than it pushes on you. Is this true or false?

    asked by maggie on November 21, 2009
  88. pre calculus

    determine the order of magnitude for the following: 1. a $1 bill and a dime 2. two products scored a PH level of 6.1 and 4.o I can't figure out #1… but I did get #2 to be 10^2.1 Please help with #1 and check to see I did #2 right?

    asked by Anonymous on February 3, 2014
  89. life orientation

    identify three study fields/ career paths in order of preference and provide two reasons for each choice

    asked by candice on June 4, 2014
  90. Math

    Given P (x) = x-1/ 2x-3, Find P (-2) The notation P(-2) for your given P(x) means that wherever you see an x, replace it with -2, then evaluate so P(-2) = (-2-1)/-4-3) = -3/-7 = 3/7 (The way you wrote your expression, according to the order of operation,

    asked by Nicole Maberry on July 24, 2007
  91. math

    Let {xn} be a sequence converging to á.? Suppose the errors en = |xn – á| satisfy en+1< or = Men^2en -1 for some constant M>0. What can be said about the order of convergence?

    asked by Mat78 on March 11, 2010
  92. Grammar

    Hi there, I am stuck on some Grammar questions, and need some help. 1. When are you having Jamie's surprise party? A. "When are you" is the complete subject. B. "You having Jamie's surprise party" is the complete subject. C."Jamie's surprise party" is the

    asked by N. on July 12, 2014
  93. english

    15. In Langston Hughes’s short story “Why, You Reckon?” what motivates the narrator to get involved in a scheme to rob a white person? (1 point) greed—he wants to earn more money in order to buy nicer things hunger—he needs the money to buy more

    asked by Jasmine on May 8, 2012
  94. Math (Data Management)

    The student council is ordering pizza for their next meeting. There are 20 council members, 7 of whom are vegetarian. A committee of 3 will order 6 pizzas from a pizza shop that has a special price for large pizzas with up to three toppings. The shop

    asked by Megan on May 27, 2008
  95. FIN

    Brady Corporation is a leader in identification, safety, and material solutions. In 1998, the firm was hit hard by faltering foreign markets, so it embarked upon an aggressive campaign to redesign its cost structure. The firm believes this will help it to

    asked by HELP PLEASE!!!!!!!!!!!!!!!!!! on August 8, 2007
  96. Social Studies

    I need help under standing this passage"...[The] said Cooper Hughs Freedman with his wife...are to work on said farm and to cultivate forty acres in corn and twenty acres in cotton, to assist in putting that fences on said farm in good order and to keep

    asked by KS on April 7, 2017
  97. Lang Arts

    1. How would you describe a deferred vacation? a. One that was booked several months ago. b. One that was delayed until a later time. c. One that was planned out many months ahead of time. 2. The speaker in the poem, “Mother To Son,” says the

    asked by Jman on November 1, 2012
  98. economics

    A perfectly competitive painted necktie industry has a large number of potential entrants. Each firm has an identical cost structure such that long-run average cost is minimized at an output of 20 units. The minimum average cost is $10 per unit. Total

    asked by adele on January 30, 2009
  99. physics

    While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each

    asked by Justin on July 26, 2013
  100. physics

    While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each

    asked by Justin on July 28, 2013