a certain reaction has the following generaln form

74,840 results, page 83

  1. physics

    A mass of 6•5 kg has a weight of 20N on a certain planet calculate the acceleration due to gravity on this planet?
  2. Chemistry

    At constant pressure , a certain gas occupies 80cm3 at 0 degrees, what wil be its volumd at 10 degrees
  3. Math

    The square of a certain integer plus three times itself equals 18. Find the integer
  4. Algebra

    A certain bacteria population is known to triples every 90 minutes. Suppose that there are initially 100 bacteria.
  5. math

    when 3 times a certain number is subtracted from 25,the difference is 28.what is the number?
  6. Chemistry

    At a certain temperature, the pH of a neutral solution is 7.77. What is the value of Kw at that temperature?
  7. Chem

    A certain shell is known to have a total of 16 orbitals, which shell is it?
  8. Chemistry

    A certain weak base has a Kb of 8.10 × 10-7. What concentration of this base will produce a pH of 10.00?
  9. Physics

    A certain p-channel JFET has a VGS(off) = +6V. What is ID when VGS = +8V?
  10. Math

    If a certain number, x, is added to 4/(x+1), the result is 3. Find the number.
  11. chemistry

    A certain weak base has a Kb of 9.00 × 10-7. What concentration of this base will produce a pH of 10.34?
  12. chemistry

    A certain weak base has a Kb of 8.40 × 10-7. What concentration of this base will produce a pH of 10.34?
  13. chemistry

    A certain weak base has a Kb of 8.40 × 10-7. What concentration of this base will produce a pH of 10.34?
  14. chemistry

    A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.17?
  15. math

    When a certain number is divided by 16, it has a quotient of 18 and a remainder of 10. What is the number?
  16. CHEM 1B

    Carboxylic acids are stronger acids than alcohols A. This is because the carboxy anion is delocalised. B. This is because the hydrogen atom is delocalised. C. The O-H bond in carboxylic acids is very strong. D. This statement is not true One characteristic of monomers that ...
  17. Chemistry

    Reposting with correct information..Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25°C. The vapor above this solutionis collected and condensed. Using the following data, determine the composition in ...
  18. Chemistry

    out of these conditions, which would result in fastest reaction? a. 2.0M HCL, powedered CaCO3 chip, 50 degrees celsius b. 6.0M HCL, CaCO3 chip, 25 degrees celsius c. 6.0M HCL, powdered CaCO3, 50 degrees celsius. d. 2.0M HCL, CaCO3 chip, 50 degrees celsius. Im guessing C ...
  19. Chemistry

    Consider the decomposition of a metal oxide to its elements, where M represents a generic metal: M2O3 (s) <=> 2M (s) + 3/2 O2 (g) Given a delta Gf: -770 Kj for the M2O3 0 Kj for the M 0 Kj for the O2 What is the standard change in Gibbs energy for the reaction, as ...
  20. Ksp/Ka Questions-Chem

    I really don't understand how to set this up. Any help is really appreciated! I really don't quite understand how to set up a caluculation to figure out whether a precipitate will form and i'm struggling with the second half too! When 25.75 mL of 0.00826 M lead II nitrate is ...
  21. chemistry

    Given the following thermochemical equations, NO(g) + (1/2) Cl2(g) --> NOCl(g) -37.78 kJ (per mol NOCl) NO(g) + (1/2) O2(g) --> NO2(g) -56.53 kJ (per mol NO2) 2 NO2(g) --> N2O4(g) -58.03 kJ (per mol N2O4) what is the standard enthalpy change for the reaction below? ...
  22. chemistry

    Given the following thermochemical equations, NO(g) + (1/2) Cl2(g) --> NOCl(g) -37.78 kJ (per mol NOCl) NO(g) + (1/2) O2(g) --> NO2(g) -56.53 kJ (per mol NO2) 2 NO2(g) --> N2O4(g) -58.03 kJ (per mol N2O4) what is the standard enthalpy change for the reaction below? ...
  23. auditing

    Bill Jensen, a staff member of Zhan & Co., CPAs, has given you the following list of what he refers to as “internal control deficiencies” for the Zabling Co. audit and has asked you to review each point and make certain that you agree that each is an internal control...
  24. Ap Chem

    If in an experiment we're working with Mg, HCl acid, and H20. We stick the magnesium in the acid mixed with water and the Mg dissolves. One of the products is hydrogen gas. If the water in the tube is evaporated, the other product, a white salt remains. Write a balanced ...
  25. science

    as temperture rises solids become more soluble in water,but gases become more less soluble.if a soft drink contain high concentration of sugar and carbon dioxide which of the following may be expected to happe if it is cooled down? 1)sugar amy percipatate out2.gas bubbles may ...
  26. Spanish

    5. Fill in the blank with the correct form of the verb jugar. yo __________ My Answer: yo juego 6. Fill in the blank with the correct form of the verb jugar. nosotros __________ My Answer: nosotros jugamos 7. Fill in the blank with the correct form of the verb jugar. ellos ...
  27. SAT Essay

    Question: Is censorship sometimes justified? At the start of every TV show here in the United States, a giant box displaying a couple of letters in bold print who up on the upper left hand corner of the screen. This serves as a warning to wary parents of content that my not be...
  28. Chemistry

    HCl(aq) +NaOH(aq) ---> NaCl +H2O In a coffee cup calorimeter 50 ml of 2.00M HCl was combined with 50ml of 2.05M NaOH. a) What is the enthalpy change for the reaction? b) What is the molar enthalpy for the reaction? Given: Change in T= 14 degrees celsius heat capacity of the...
  29. Finding the Activation Barrier

    Q: A reaction rate has a constant of 1.23 x 10-4/s at 28 degrees C and 0.235 at 79 degrees C. Determine the activation barrier for the reaction. A: My work thus far: ln(1.23 x 10-4/0.235)=(Ea/8.314)(1/79-1/28) -7.551=(Ea/8.314)(0.01265-0.03571) -7.551=(Ea/8.314)(-0.02305) 327....
  30. Chemistry

    Which of the two, benzoic acid and sucrose, has the largest heat of combustion and why? Can you look up the heats of combustion. I found -3226.9 kJ/mol for benzoic acid and -5637 kJ/mol for sucrose but you should look for yourself and confirm those numbers. Write the combusion...
  31. math

    sara is thinking of a number that is a repeating deciaml of the form 0. abcdabcd...find sara's number using the following clues. a. the digit that is located 100 places after the deciaml is 4. b. the digit that is 150 places after the deciaml is 5. c. the digit that is 175 ...
  32. American History

    Check my answers? 1. In what way was the government of ancient Athens different from the united states A) Athens was a direct democracy in which citizens ** B) Athens was an oligarchy ruled by the wealthy members of the council of five hundred C) Athens was a republic in which...
  33. math

    Is there an easy way to tell what graph I should use for questions like this? The following is a list of product manufacturing levels for the 50 states in 2004 ($ millions): 76, 5, 42, 55, 388, 34, 45, 17, 84, 131, 5, 17, 210, 184, 79, 56, 97, 124, 14, 36, 77, 220, 88, 44, 103...
  34. PLEASE HELP HISTORY

    In what way was the government of ancient Athens different from the united states A) Athens was a direct democracy in which citizens B) Athens was an oligarchy ruled by the wealthy members of the council of five hundred C) Athens was a republic in which the people voted for ...
  35. Spanish

    Part 2 Directions: Complete the description of the following people by using the correct form of the verb and translating the adjective. Remember to make it agree in gender and number with the person(s). Example: Elena _______________ (pretty). Response: Elena es bonita. Paul...
  36. Probability

    In the following problem, please select the correct answer. Let X be a non-negative random variable. Then, for any a>0, the Markov inequality takes the form P(X≥a)≤(a^c)E[X^5]. What is the value of c? c= unanswered Suppose that X_1,X_2,⋯ are random variables with mean...
  37. Chemistry

    Hi, I have another question... I need to write a reaction for the preparation of americium by reducing AmF3 with barium vapor at 1100C I'v looked and can't find anything that will help me with this... (I'm preparing for finals, so this might not be my last question!) Thanks ...
  38. science

    I have read over 20 sites and I still cant figure this one out - in an atom electrons are located in energy levels that are a certain distance from the nucleus.
  39. ALGEBRA

    the total cost for hiring a certain number is a flat rate of $35 plus $9.50/hour. can you write an equation that shows the relationship between the two quantities.
  40. physics

    A punter kicks a football with a certain initial velocity of 13.8 m/s at an angle of 20.0o above the horizontal. How long does it take the ball to rise to the highest point of its tragetory?
  41. Algebra II

    A certain escalator travels at a rate of 10.6 m/min, and its angle of inclination is 32.5 degrees. What is the vertical component of the velocity? How long will it take a passenger to travel 10.0 m vertically?
  42. english 9 th

    2. Choose a story element, such as the use of a symmetrical plot, a certain kind of narrator, or irony, and explain how and why it is used in one of the stories in the unit.
  43. government

    Why would bureaucrats become more concerned that elaborate procedures are followed, as opposed to achieving certain substantive outcomes? What political relationships cause this result?
  44. chemistry

    At a certain temperature, the concentrations of NO and NH3 are equal, and the concentration of H2o and o2 are 2.0M and 3.0M respectively. What is the value of Keq at this temp? The equation is 5O2+4NH3--> 4NO+6H20
  45. physics

    A certain centrifuge produces a centripetal acceleration of magnitude exactly 1090g at a point 12.3 cm from the axis of rotation. Find the number of revolutions per second.
  46. physics

    a certain centrifuge produce a centripetal acceleration of magnigtude exactly 1410g at a point 12.3 cm from the axis of rotation. find the number of revolutions per second
  47. Psychology

    When unconscious defenses block access to certain material during free association, what is said to occur? a. Repression. b. Resistance. c. Suppression. d. Blocking. e. Blunting.
  48. chemistry

    In a certain experiment a student finds that the PHs of 0.10 M solutions of three potassium salts KX, KY, and KZ are 7.0, 9.0, and 11.0, respectively. Arrange the acids HX, HY, and HZ in order of increasing acid strength.
  49. Math

    How to solve this problem 8.3 was added to a certain number. This sum was then divided by 11.2. Finally, the quotient was multiplied by 8. This product came out to 16. Please help I'm in 5th gradethank you..
  50. calc

    The quantity (in yards) of a certain fabric that is sold by a manufacturer at a price of p dollars per yard is Q = f(p). 1) What is the meaning of the derivative f ' (16)? 2) What are its units? 3) Is f ' (16) positive or negative? Explain.
  51. Government USA-Help

    According to survey data, a. Americans prefer money as the primary form of welfare assistance. b. most Americans believe that welfare recipients could get along without assistance if they tried. c. Americans prefer government jobs through government programs as the primary ...
  52. Chemistry

    In the Haber-Bosch process, nitrogen and hydrogen gas are reacted under high temperature 500 degrees C and pressure 200 atm to form ammonia gas (NH3) according to the following equation: N2+3H2 = 2NH3 If 9300 L H2 gas is reacted with an excess of N2 gas at 200 atm and 500 ...
  53. 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 ...
  54. English / need advice

    we are asked to write a 1 page report about how is fermented beverage made. my plan is to make report about fermented milk. i found this article but my concern is how can i make my report without looking like a copy/ paste work? need serious advice. here is the article that i ...
  55. Help scott biostats

    The value of mammography as a screening test for breast cancer has been controversial, particularly among young women. A study was recently performed looking at the rate of false positives for repeated screening mammograms among approximately 10,000 women who were members of ...
  56. Chemistry

    Write a balanced equation for the reaction that occurs in each of the following cases. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) I think have the reactions, but I'm stuck with the states of matter. Any help would be ...
  57. Spanish

    I always thought Ustedes meant "they." I've also heard it as "you all (plural)". So when a question being given has the Uds. conjugation of the infinitive, are we suppose to answer back in the Uds. form or nosotros form? For example: A que hora van a salir Uds? (accent on que...
  58. geometry

    User: Courtney Thompson In Course: Geometry V8 ( 2167) Instructor: Tracie Morgan -------------------------------------------------------------------------------- WARNING: You must not leave this exam form! If you try to click back into this exam again prior to submitting, your...
  59. college

    Identify and describe which, if any, of the following creation and consequence situations that Native Americans has faced: Native American Creation: migration, annexation, or colonization Consequences Of Native Americans: extermination, expulsion, secession, segregation, ...
  60. chemistry

    If 20 mole of potassium react with an excess of lithium sulfate , how many moles of potassium sulfate can you expect to form. porassium phosphate to potassium sulfate: 20 x 2 kaso4 x 174.259 / 212.267 /2 = 16.4188498448 lithium sulfate to potassium sulfate: 62 x 2kaso4 x 174....
  61. science 8th grade

    ok, i don't have answer to these questions! #8: The interaction of air, water, and _________ causes weather. #9: Violent storms generally form where? #10:clouds form as warm air rises, expands, cools, and becomes saturated, and then _______________ condense(s) into tiny drops...
  62. science Please Help Me

    5. Which one of the following is not a cause of anemia? a diet lacking in iron and certain vitamins germs from someone with anemia inherited problems relating to red blood cells. loss of a large amount of blood 6. Which of the following carries blood to every part of the body...
  63. Science Please Help Me

    5. Which one of the following is not a cause of anemia? a diet lacking in iron and certain vitamins germs from someone with anemia inherited problems relating to red blood cells. loss of a large amount of blood 6. Which of the following carries blood to every part of the body...
  64. Psychology

    Drive theories disagree with incentive theories of motivation with regard to how they answer the following question: a. Are all motivations equally strong or do some take priority over others? b. Are the motivations of humands fundamentally similar to or different from the ...
  65. College Algebra

    1. Which of the following best describes how the graph of f can be obtained from the graph of y = 1/x^2? f(x) = 4/x^2 a. vertical stretch by a factor of -4 b. horizontal shift of 4 units to the right c. reflection over the y-axis, vertical shrink by a factor of 4 d. reflection...
  66. Medical Staff Service

    i need help on someone one showing me how to set up a proctorship form. for example i need to prepare a form showing how the proctorship process is completed for a surgeon who recently obtained staff privileges instead of doing the surgeon show me a example with the midwife ...
  67. math

    a. Suppose a market research company finds that at a price of p = $30, they would sell x = 32 baskets each month. If they lower the price to p = $10, then more people would purchase the baskets, and they can expect to sell x = 52 baskets in a month’s time. Find the equation ...
  68. Biology -- repost

    (To whoever posted the first time -- DO NOT use any tutor's name where YOUR name should be. Impersonation of a tutor is not allowed on this website.) What are the biological terms of the following? 1.Reproductive structure in breadmould 2.acquired immunity obtained through ...
  69. AP Chemistry

    The reaction of the molecules to produce ethane is C2H4(g) + H2(g) → C2H6(g). A mechanism for this reaction is shown below: (The figures show how the ethene molecule with two hydrogen molecules attached 'binds' to nickel. Then four more ...
  70. chemistry

    1. Ceramic material made by the sol-gel process involve the reaction of a. water and acids. b. ethanol and water. c. water and metal oxides. d. acids and metal alkoxides. e. water and metal alkoxides. my ans. c 2. The step in the sol-gel process that forms oxygen bridges while...
  71. Physics- Newton's 1st and 2nd Law

    Please help me :( Briefly explain the following scenario's using Newton's first law. a) Trevor wants to tow Kevin's car with his truck. He attached a small tow rope between the vehicles and leaves the rope slack (loose). Trevor quickly accelerates forwards making the rope ...
  72. FIXED Essay 2.

    I know I have to add some specifics to certain areas, could you proofread what I have so far. Who is an American?
  73. science

    A substance that loses its shape under certain conditions is called what? A liquid takes the shape of its container.
  74. chemistry

    What makes certain inks permanent and others washable? And why does "permanent" ink still dissolve in water.
  75. science

    What makes certain inks permanent and others washable? And why does "permanent" ink still dissolve in alcohol?
  76. algebra

    A certain population of bacteria doubles every 3 weeks. How long will it take for a population of 3,500 to triple?
  77. physics

    The acceleration of a certain rocket is given by a(t)=bt where b is positive constant compute the the instantaneous velocity of the rocket between t=4.5s and 5.5s at t=5.0s if x(t)=0 and b=3.0m/s^3?
  78. college physics

    The hour hand on a certain clock is 8.3 cm long. Find the tangential speed of the tip of this hand.
  79. math

    in a certain lottery, 3 numbers between 1 and 9 inclusive are drawn. These are the winning numbers. How many different selections are possible?
  80. math

    A certain number when divided by 4, 5 or 7 will have a remainder of 3, 4 and 6 respectively. Find the least possible value of the number. ( L.C.M. of 4, 5. 7) -1
  81. Growth Chart

    Does anyone know what the stature for age percentiles means? The perecent of people that are this certain height/age in the country??
  82. chemistry

    if a certain pressure supports a 256 column of mecury, how high a column of water would it support?
  83. science

    monarch butterflies migrate from newyork at a certain time of the year. how migration helps butterflies survive?
  84. Physics

    An rms voltage of 120 V produces a maximum current of 2.6 A in a certain resistor.Find the resistance of this resistor?
  85. Math

    A certain size bottle holds exactly 4/5 pint of liquid. How many of these bottles can be filled from a 20-pint container?
  86. Math

    A certain size bottle holds exactly 4/5 pint of liquid. How many of these bottles can be filled from a 20-pint container?
  87. chemistry

    At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0510 g/L. What is the Ksp of this salt at this temperature?
  88. Statistics

    A certain lottery has 29 numbers. In how many different ways can 6 of the numbers be selected? Assume that order of selection is not important
  89. US HISTORY

    NO ONE KNOWS FOR CERTAIN WHY THE CLASSIC WORLD BEGAN TO DECLINE. GIVE TWO REASONS FOR A REASONABLE DECLINE?
  90. physics

    Assuming that the speed of sound at a certain altitude is 330m/s calculate the speed of an airplane that is travelling at (A) mach 0.70
  91. physics

    Assuming that the speed of sound at a certain altitude is 330m/s calculate the speed of an airplane that is traveling at match 4.2 ?
  92. maths

    At a certain time of the day a post, 4m tall, casts a shadow of 1.8m. What is the angle of elevation of the sun at that time?
  93. Chemistry

    #24 At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0660 g/L. What is the Ksp of this salt at this temperature?
  94. Math

    If 1 more than a certain number is 3 less than a second number, the larger of these numbers minus the smaller is equal to?
  95. math

    Michelle buys 18 oz ofa certain cereal for $1.14. What was the price per pound of the cereal to the nearest cent?
  96. chemistry

    if 5.2 grams of bismuth react under certain conditions with 10.0 g of oxygen what is the empirical formula of the bismuth formed
  97. statistics

    a study was conducted of all 1849 students in a certain country.whether the value is parameter or statistics
  98. Math

    A certain recipe asks for two thirds cups of granola how much do you need to make 1/7 of a recipe
  99. math

    a certain number is tripled and then divided by 4. If after subtractiog 16 from the result, one gets 44, the original number is?
  100. arithmetic

    on a certain day, the temperature range from -2f to 10f. what is the difference between the high and low temperatures for that day?
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