1. Equilibrium

    The following reaction has an equilibrium constant (Keq) of 160. 2 NO2(g) <--> 2 NO(g) + O2(g) What will be the reaction quotient (Q) and in which direction will the reaction proceed if the partial pressure of NO2 is 5.0*10^-4 atm, NO is 0.080 atm,
  2. chemistry

    At 2010K, the equilibrium constant Kc is 4*10^-4 for the following: N2+O2-->2NO If the equilibrium concentration of N2 is .28M and O2 is .38M, what is the equilibrium concentration of NO? a)1.8*10^-9 b)2.1*10^-5 c)4.3*10^-5 d)6.5*10^-3
  3. 5th grade math

    points that lie o the same line are called collinear points. The points H,S,D,K,L, and D are collinear. use the following information to locate them on the line and label the points accordingly. KS + SB =KB DH + HS =DS DH + Hk =DK points L and B are not
  4. English

    A(n) ____ will be sent to all our representatives in Latin AMerica advising them how to handle the problem libel None of us could figure out how the ____ magician had managed to escape from the trunk submerged in the tank of water ingenious?
  5. Chemistry: Equilibrium

    What is the significance of a very large Kp value on the equilibrium concentration of H2 in the reaction: 2H2(g) + O2(g) ->2H2O(g)? <- There is very little H2 at equilibrium. The amount of H2 is always equal to the amount of O2 at equilibrium. The
  6. AP Chemistry

    Consider the following reaction. CaSO4(s) Ca2+(aq) + SO42-(aq) At 25°C the equilibrium constant is Kc = 2.4 10-5 for this reaction. (a) If excess CaSO4(s) is mixed with water at 25°C to produce a saturated solution of CaSO4, what are the equilibrium
  7. chemistry

    Magnesium reacts with HCl(aq) to form MgCl2 and H2(g) ____ Mg(s) + ____ HCl(aq) -----> ____ MgCl2(aq) + ____ H2(g) The following data was collected for the above reaction: Mg (g) 5% (m/v) HCl (ml) H2 gas produced (ml) 0.50 10 167 0.50 20 333 0.50 30 500
  8. Chemistry

    If the equilibrium concentrations are [PCl5] = 1.0M, [Cl2] = 0.10M, what is the equilibrium constant value? PCl5(g) <---> PCl3(g) + Cl2(g) Would you mind showing the calculations Please. I've been working on this problem over an hour now. Not certain
  9. Chemistry II

    At a certain temperature, Kc = 33 for the reaction: H2(g) + I2(g) 2HI(g) Assume that the initial concentrations of both H2 and I2 are 6.00 x 10-3 mol/L. Find the concentration of each reactant and product at equilibrium.
  10. English

    Select the letter that indicates the correct noun or pronoun in the following sentence. If both choices are correct, select the pronoun. 1. The last time Kevin and Denise were here was right after ____ had broken her ankle. a.she b.Denise 2. In the
  11. Chem

    Methane and Hydrogen Sulfide react at 960 degree Celsius and come to the following equilibrium CH4(g)+2H2S(g) <-> CS2(g)+ 4H2(g) At Equilibrium the concentration measured as [Ch4]= 5.56M [H2s]= 11.12 [CS2]= 2.44M [H2] 1.76, A) Write the equilibrium
  12. Chemistry

    A 5.00L reaction vessel is filled with 1.00mol of H2, 1.00mol of I2, and 2.50mol of HI. If equilibrium constant for the reaction is 129 at 500k, what are the equilibrium concentrations of all species? H2(g) + I2(g) <-> 2HI(g) Kc = 129
  13. Pharmacology

    This is super confusing, I'm sorry! The homework: You have to administer simultaneously two drugs which are each 90% protein bound when administered separately. Please use the law of mass action to calculate how do you have to change the administered doses
  14. chemistry

    Hydrogen iodide decomposes according to the reaction 2HI(g)H2(g) + I2(g) A sealed 1.50 L container initially holds .00623 moles of H2, .00414 moles of I2, and .0244 moles of HI at 703K. When equilibrium constant is reached, the concentration of H2(g) is
  15. Chem II

    2 NOCl(g) --> 2 NO(g) + Cl2(g) Let’s assume that at a given temperature the equilibrium constant is 2.25: Also, the equilibrium concentration of the NOCl is 0.04M. Determine the concentration of the NO and the Cl2 CLUE: the concentration of both of
  16. English

    19.Remember that the Pledge of ____ is not a formula to be repeated mechanically but a summary of our sacred duty to our country allegiance 11.Under the US Constitution officials are never ____ to a point where they are more important or more powerful than
  17. Math

    Complete each ratio table: ___ 12 18 24 4.5 ___ ___ 18 80.8 40.4 ____ 10.1 ___ 512 256 ____ How do you complete a ratio table I have never done this before. Please help me. The spaces that I put are for the answers for each table.
  18. chem

    For the reaction: A+B <-----> 2C (all gases) 2.0 mol A, 2.8 mol B and 1.0 mol C are placed in a 2.0 L container and allowed to reach equilibrium. When equilibrium is established [C]=0.75 M. Calculate all equilibrium concentrations. Calculate K. I am
  19. Science

    Please check my answers (at the bottom) with these questions. 1. An apple quickly changes color when exposed to air. This demonstrates a ________. (1 point) physical property chemical property physical change all of the above 2. When a chunk of dry ice is
  20. English

    Word Bank : apparel besiege compress denounce dispatch douse expressly famished forsake gainful immense inept ingenious instantaneous irk libel misgiving oaf recede repast Some people hailed the man as a genius others ____ him as a quack Denounce? Your
  21. Chem

    Estimate the equilibrium constant for the weak base (CH3)2NH, if a 1.59×10-2 M aqueous solution of (CH3)2NH has a pOH 2.58 (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). (CH3)2NH + H2O =
  22. Math/Algebra

    I really need help! I have a paper due tomorrow and I can't find out this answer. Can you help me? The question says this: -2=n+5. Under it it says: (-2)-____=n+5-____. I know that n equals -7 but I can't find out the blanks. Please help!
  23. 5th Grade Math

    Find the missing numbers and landmarks for the set of numbers: 18,20,20,24,27,27,__,30,33,34,36,36,__ A range:22 B mode:27 C Minimum ____ D Maximum ____
  24. Math

    Divide 2 ____ 9 ____ 2
  25. science

    passive transport involves movement of substances...... A) from areas of lower concentration areas of higher concentrations. B)from areas of higher concentrations to areas of lower concentration C) from areas which the concentration has reached a balance
  26. chemistry

    A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard solution is assumed to be ____ M.
  27. Science

    There are two fill-in-the-blank questions that I can't find the missing word. If you could be of any help, I'd appreciate it. :) #1. The ____ describes the steps you use during an experiment. #2. Sometimes scientists make a mistake, or ____, and need to do
  28. chemistry

    The temperature of a substance ____ as its heat of fusion is added to melt the substance A. increases B. decreases C. remains constant D. fluctuates from rapid increases and decreases
  29. chemistry

    the temperature of a substance ____ as its heat of fusion is added to melt the substance A. increases B. decreases C. remains constant D. fluctuates from rapid increases and decreases I think it's C
  30. Chem 112

    An equilibrium was established after 0.100 mol of hydrogen gas and 0.100mol of iodine gas were added to an empty 1.00L reaction vessel and heated to 700K. The color intensity of the mixture changed from deep purple to a lighter purple color. At
  31. Math

    36+81=____(____+____)
  32. chemistry

    A chemical is placed in a beaker containing 20 g of soil and 500 mL of water. At equilibrium, the chemical is found in the soil at a concentration of 100 mg/kg of soil. The equilibrium concentration of this same chemical in the water is 250 µg/L.
  33. Science

    1- Freezing of water is ____ change. 2- A solid which dissolve in water is called ____
  34. Chemistry-DrBob222

    Where did you get 5E-5. Is this how you set it up? 0.01 x 0.05 = 5E-4 If so, is it supposed to be 5E-4 instead of 5E-5? What is the equilibrium constant for a weak acid HA that dissociates 1% at an initial concentration of 0.05 M according to the following
  35. science

    1. The ability of an apple to change color when exposed to air is a ____. (1 point)physical property chemical property physical change chemical change 2. Which of the following is NOT a possible sign of a physical change? (1 point)a change in appearance a
  36. chemistry

    For the equilibrium: H2 + I2 <=> 2HI The equilibrium konstant Kc is equal to 50.5 at 448ºC. If [H2]o=[I2] o= 1 mol/l. What will the concentration of H2, I2 and HI be at equilibrium
  37. CALCULUS!

    f(x)=(6x^3–9x^2–3x–1)/(4x^2+7x–3) . Find the equation of the non-vertical asymptote. y = ____3x/2 - 39/8_____ Does f(x) intersect its non-vertical asymptote? (yes or no) ___YES____ What is the smallest value of x at which f(x) intersects its
  38. spanish help PLEASE

    I answered le le me te * most confused with # 2 b/c it then the sentence read le la 1. El camarero va a traer ____ la cuenta a mi papa 2. A mi hermana Elena _____ encanta el flan 3. a mi ____ gustan las papitas 4. A ti ___ gusta el jamon
  39. Chemistry

    Estimate the equilibrium constant for the weak acid HCN, if a 4.68×10-3 M aqueous solution of HCN has a [H+] 0.00000151 M (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). HCN = CN- + H+
  40. chemistry

    Estimate the equilibrium constant for the weak acid HCO2H, if a 2.19×10-3 M aqueous solution of HCO2H has a pH 3.21 (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). HCO2H = HCO2- + H+
  41. chem12

    for the equilibrium 2HI(g)--- H2(g) + I2 k eq = 8.0 2.0 mol of HI are placed in a 4.0 L container, and the system is allowed to reach equilibrium. Calculate the equilibrium concentration of all three gases. Inital 2HI 0.5mol/l H2 =0 I2=0 change 2HI= -2x
  42. math

    I have to find the rule of each line can you help? 1.3,3.3,4.5,6.5,7.7,____,_____,_____ Rule:_______________________ 14.8,15,13.2,13.4,11.6,____,____,____ Rule:_______________________ 4.8,9.6,8.9,17.8,17.1,_____,______,_____ Rule:_______________________
  43. AP CHEMISTRY

    I really need this please!!!!!!! : write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s)<--> NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the
  44. AP CHEMISTRY

    I really need this please!!!!!!! : write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s)<--> NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the
  45. Chemistry

    Sulfur trioxide decomposes into sulfur dioxide and oxygen in an equilibrium. You have a 3.00 L vessel that is charged with 0.755 mol of SO3. At equilibrium, the amount of SO3 is 0.250 mol. 2 SO3 (g) ----> 2 SO2 (g) +O2 (g) A) calculate the equilibrium
  46. Chemistry

    I got 1.11 x 10^-6 for K. Here is my work: x= 0.004 -2x= -0.008 (change for CH4) Equilibrium for CH4 is 0.087 - 0.008= 0.079 Change in eq for C2H2 is 0.004 and eq is 0.004 (=x) Change in eq for H2 is 0.012 Eq for H2 is 0.012 K= [C2H2][H2]^3/[CH4]^2 K=
  47. chemistry

    A mixture consisting of 0.150 M N2(g) and 0.612 M H2(g) reacts and then reaches equilibrium according to the equation: N2(g) + 3H2(g) ⇋ 2NH3(g) At equilibrium, the concentration of ammonia is 0.213 M. Calculate the concentration (molarity) of H2(g)
  48. chemistry

    A system initially contains 0.100 mol each of the three species sealed in a 10.0 L container. The temp was raised to a temp where the equilibrium constant Kc, is 12.6 for PCl3(g) + Cl2(g)--> <-- PCl5(g) Calculate the equilibrium concentration of all
  49. chemistry

    A system initially contains 0.100 mol each of the three species sealed in a 10.0 L container. The temp was raised to a temp where the equilibrium constant Kc, is 12.6 for PCl3(g) + Cl2(g)--> <-- PCl5(g) Calculate the equilibrium concentration of all
  50. English

    Word box affluence arrears cascade cringe crotchety format immobile impassable innovation jovial manacle martial minimum nimble onset partition perishable retrieve sinister taut Sherlock Holmes detected in the wicked scheme the ____ hand of the evil
  51. Chemistry 2

    The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K. 2HI(g) H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.351 M.
  52. chem

    When the concentration of I2 is increased to 1.5 M, the ratio of products to reactants is 28. The equilibrium constant for the reaction is 83. In which direction will the reaction shift to regain equilibrium?
  53. Chemistry Equilibrium

    At 500 ºC, the decomposition of water into hydrogen and oxygen, 2H2O(g) 2H2(g) + O2(g) has Kc = 6.0 × 10-28. What are the concentrations of H2 and O2 that are present at equilibrium in a 2.00 L reaction vessel at this temperature if the container
  54. chemistry

    Kc for the decomposition of ammonium hydrogen sulfide is 1.8 x 10-4 at 15oC. a. When 5.00 grams of the pure salt decomposes in a sealed 3.0 L flask at 15oC, what are the equilibrium concentrations of NH3 and H2S? b. What are the equilibrium concentrations
  55. chemistry

    equilibrium CO(g)+2H2(g)<->CH3OH(g)calculate these concentrations:CO(g) in an equilibrium mixture containing 0.933mol/L H2 and 1.32 mol?l CH3OH.
  56. Grammar (Ms. Sue) or (Writeacher)

    Complete each sentence by adding -ed to one of the following words and writing the new word on the line. Word Bank: whisper; murmur. 1. It seemed that the army ____ to itself in the dark. 2. Some of the men ____ to themselves.
  57. Chemistry

    The equilibrium constant for the reaction H2 + I2 --> 2HI, is 54 at 425 degrees C. If the equilibrium mixture contains 0.030 M HI and 0.015 M I2, calculate the equilibrium concentration of H2.
  58. AP Chem

    At 25 oC, Kc = 0.145 for the following reaction in the solvent CCl4. 2BrCl <----> Br2 + Cl2 A solution was prepared with the following initial concentrations: [BrCl] = 0.0482 M, [Br2]= 0.0307 M, and [Cl2]= 0.0277 M. What will their equilibrium
  59. Chemistry Problem

    At 25 oC, Kc = 0.145 for the following reaction in the solvent CCl4. 2BrCl <----> Br2 + Cl2 A solution was prepared with the following initial concentrations: [BrCl] = 0.0482 M, [Br2]= 0.0307 M, and [Cl2]= 0.0277 M. What will their equilibrium
  60. Math

    5 -2x-1 = x+2 ____. ____ 4. 3 I keep getting x=5.5 Multiply by 12 60-3(2x-1)=4(x+2) 60-6x-3 =4x+8 63-6x=4x+8 Add the -6x 63=10x+8 Subtract the 8 55=10x Divide 10 X=5.5
  61. Thermodynamic

    The equilibrium constant of a reaction is determined at 2 different temperatures: at -181°C, Keq = 2770 at -11°C, Keq = 640
  62. science

    Acetic acid (CH_3COOH) is a weak acid. a) Write the symbolic equation showing the ionisation of acetic acid. b)Given that an acetic acid solution of pH 4.8 has a hydrogen ion concentration of 1.58 * 10^-5 mol L^-1, what is the concentration of the acetate
  63. chem

    For the reaction: N2+3H2 <-----> 2NH3 1.000 mol N2 and 1.000 mol H2 are placed in a 1.000 L container and allowed to establish equilibrium. When equilibrium is established the [N2] =0.921M. Calculate the equilibrium concentrations of hydrogen and
  64. Chemistry

    Can someone check my answers for the following questions...btw HAPPY HOLIDAYS TO EVERY AT JISKHA! 1)As the magnitude of Keq increases, the amount of product formed in a reversible reaction: REMAINS CONSTANT 2)The Keq of reacion 4 x 10-7. At equilibrium:
  65. Chemistry

    An aqueous solution of 0.25 M silver nitrate, AgNO3, and 0.25 M iron(II) nitrate, Fe(NO3)2, are allowed to come to equilibrium in the following chemical reaction:
Ag+(aq) + Fe2+(aq) Fe3 + (aq) + Ag(s)
If the equilibrium constant, Kc, for the
  66. Chemistry

    A mixture of .10 mol of NO, .050 mol of H2 and .10 mol of H20 is placed in a 1 liter vessel at 300 K. The following equilibrium is established. 2 NO + 2 H2 <----> N2 + 2 H20 At equilibrium (N0) = .062 M. What are the equilibrium concentrations of H2
  67. Chemistry

    A mixture of .10 mol of NO, .050 mol of H2 and .10 mol of H20 is placed in a 1 liter vessel at 300 K. The following equilibrium is established. 2 NO + 2 H2 <----> N2 + 2 H20 At equilibrium (N0) = .062 M. What are the equilibrium concentrations of H2
  68. Chemistry 2

    The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K. 2HI(g) H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.351 M.
  69. Chemistry

    Need help in AP chemistry on Equilibrium When heated, hydrogen sulfide gas decomposes according to the equation 2 H2S(g) ⇄ 2 H2(g) + S2(g) A 3.40 g sample of H2S(g) is introduced into an evacuated rigid 1.25 L container. The sealed container is
  70. Chemistry

    A 1.00 L flask containing the equilibrium mixture CO +Cl2 <-> COCl2 was found to contain 0.400 mol of COCl2, 0.100 mol of CO, and 0.500 mol of Cl2. If 0.300 mol of CO is added at constant temperature, what will be the new concentrations of each
  71. Chemistry (equilibrium)

    H2(g) + I2(g) ⇌ 2HI(g) The concentration of H2, I2 and HI are measured as 0.04 M, 0.08 M and 0.12 M at equilibrium and 200 K. What is the value of equilibrium constant?
  72. statistics

    Every year thousands of students take the SAT'S. RECENT TRENDS SHOW THAT THE SCORES ON THE VERBAL SECTION FOLLOW AN APPROX. NORMAL DISTRIBUTION WITH MEAN 550 AND STANDARD DEVIATION OF 110 68.26% OF THE STUDENTS WHO TAKE THE SAT VERBAL SCORE BETWEEN ______
  73. chemistry

    a) The OH- concentration of 0.050 M ammonia, NH3, is 9.5x10^-4. Write the equilibrium equation for its ionization and the equilibrium constant expression; solve for the value of K.
  74. chemistry

    The OH- concentration of 0.050 M ammonia, NH3, is 9.5x10^-4. Write the equilibrium equation for its ionization and the equilibrium constant expression; solve for the value of K.
  75. Spanish SO confused

    Hi thanks for the help? Which are the correct indirect pronouns for the following: me te le nos les 1. El camarero va a traer ____ la cuenta a mi papa 2. A mi hermana Elena _____ encanta el flan 3. a mi ____ gustan las papitas 4. A ti ___ gusta el jamon
  76. Equilibrium

    2 SO2(g) + O2(g) <==> 2SO3(g) Initially, 1.6mol SO3 is placed in a 3.0L container. At equilibrium, [O2] = 0.15M. What is the value of Keq? A. 0.26 B. 1.2 C. 4.0 D. 43 My work: ...2SO2...+...O2...<==>...2SO3 I 0.53M.....-----.........----- C
  77. Chemistry

    EQUILIBRIUM: To prepare the standard solution, a very large concentration of ferric ion is added to a small initial concentration of thiocyanate ion. True or False It would help if we knew what you were doing. We are determining Chemical Equilibrium:
  78. chemistry

    Into a 1.00 liter flask are placed 0.820 moles of NO and 0.223 moles of N2 and O2. What are the concentrations of NO, N2, and O2 at equilibrium? For the molarity for each, I got this: NO= .027 M N2= .0079 M O2= .0069 M balanced equation: 2NO(g) <->
  79. math

    Find the place value of 7 and 8 in the number 9.7548. (b). Write 23459/1000 in decimal form. (c). Write 3.537 in English words. (d). Write twelve and seventeen thousandths in decimal form. (e). Complete the statements below, using the symbol “<” or
  80. French

    Complétez avec l’article défini ou indéfini qui convient. 1. Vous aimez __ou__ cinéma ? 2. Vous avez l’appartement ? 3. Vous connaissez __les__ enfants de Michel ? 4. Je voudrais __le__ morceau de pain. 5. Vous lisez ____ journaux ? 6. Il a ____
  81. English

    Word bank authorize culprit dawdle dissect expend fatality gullible illicit immerse inflammatory memorandum pathetic persevere prevaricate quash relish reminisce scour tribute writhe We tried to hold Tom steady but he ____ with pain as the doctor put
  82. college chemistry

    The value of the equilibrium constant (Kp) as represented by the first chemical equation is 4.57 x 10-2 at 395 °C. Calculate the value of the equilibrium constant (Kp) for the second equation at the same temperature. Express answer in scientific notation.
  83. english

    Word bank: adverse arid assailant billow confront constrain contemporary depict disinterested encompass groundless hypocrite incomprehensible manipulate maximum mimic ruffle serene sheepish stamina Since Tom is both smart and disinterested I think he is
  84. Equilibrium concentrations, please help!!!

    Lead metal is added to 0.150 M Cr3+(aq). Pb(s)+2Cr3+(aq)⇌Pb2+(aq)+2Cr2+(aq). KC=3.2×10−10 What is [Pb2+] when equilibrium is established in the reaction? What is [Cr2+] when equilibrium is established in the reaction? What is [Cr3+] when equilibrium
  85. chem 12

    for the equilibrium 2HI(g)--- H2(g) + I2 k eq = 8.0 2.0 mol of HI are placed in a 4.0 L container, and the system is allowed to reach equilibrium. Calculate the equilibrium concentration of all three gases. Inital 2HI 0.5mol/l H2 =0 I2=0 change 2HI= -2x
  86. Science

    Since no one answered, and I really need help: So I am doing this science experiment about light. I chose to do one where you put a pencil in a glass of water and the light makes it look like it's bending. There is a chart of measurements that you need to
  87. Science

    Since no one answered, and I really need help: So I am doing this science experiment about light. I chose to do one where you put a pencil in a glass of water and the light makes it look like it's bending. There is a chart of measurements that you need to
  88. math

    Data​ (x,y) for the total number​ (in thousands) of​ college-bound students who took a test in the year x are approximately ​(11,1177), ​(8,1493​), and ​(11​,1664), where x=1 represents 2001 and x=8 represents 2008. Find the values​ a, b,
  89. Chemistry

    Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) ⇌ PCl3(g) + Cl2(g) A 0.304 mol sample of PCl5(g) is injected into an empty 4.75 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at
  90. algebra

    solve by the elimination method What is the solution of the system? 5x+5y=-7 7x-2y=19 solution is?____ there are infinitely many solutions ____ there is no solution?_____
  91. College algebra

    It took Eric 8 hours to drive to a job interview. On the way home, he was able to increase his average speed by 18mph and make the return drive in only 5 hours. Find his average speed on the return drive. Rate x time =distance Original drive- x. ____ _____
  92. CHEMISTRY

    Aluminum hydroxide reacts with an excess of hydroxide ions to form the complex ion Al(OH)4- a)Write an equation for this reaction b) Calculate K. c) Determine the solubility of Al(OH)3 in (mol/L) at pH 12.0 My equation was Al(OH)3 + OH- --> Al(OH)4- but
  93. Science

    So I am doing this science experiment about light. I chose to do one where you put a pencil in a glass of water and the light makes it look like it's bending. There is a chart of measurements that you need to fill out and I have no idea how to get them. I
  94. Chemistry

    I have a question about buffers. Part A So it starts with 20ml 0.1 sodium acetate and 25ml 0.1 acetic acid. Calculate ph of buffer is 4.74 because the acid and conjugate base have the same molarity correct? So the Ph is just pKa (1.8e-5)? Part B So the
  95. math

    108 ,36,12,4 ___ ,____find next two numbers 12,24 ,48,96 ____, ___ find the next two numbers 1 ,1,2,3 ____, ____ find the next two numbers
  96. chem

    The molar concentrations for the reactants and products at equilibrium are found to be [HCl] = 0.80 M, [O2] = 0.20 M, [Cl2] = 3.0 M, and H2O = 3.0 M. What is the value of the equilibrium constant for this reaction? the complete reaction is
  97. chemistry

    1.If its molar solubility is designated by “x”, then which of the following expressions best represents the solubility product for the substance Ag2SO4? a) x2 b) 27x4 c) 4x3 d) 108x5 e) 3x4 2. Consider the equilibrium, 4HCl(g) + O2(g) 2H2O(g) +
  98. AP CHEMISTRY

    An experiment was carried out to determine the value of the equilibrium constant Kc for the reaction. Total moles of Ag+ present = 3.6 x 10-3 moles Total moles of NH3 present = 6.9 x 10-3 moles Measured concentration of Ag(NH3)2+ at equilibrium= 3.4* 10-2
  99. Chemistry

    C6H12O6 (aq) = 602 (g) - 6CO2 (g) = 6H20 (l) H -2837 A)Exo or endothermic? B)write an expression for the equilibrium constant C)Give the value of the equilibrium constant is very large, would this reaction be fast or slow? D)effects of equilibrium if.. i.
  100. Math

    Identify the end behavior f(x)=(x-4)^2 As x ---> positive infinity, f(x) --> ____ infinity and as x --->, f(x) ---> ____ infinity Fill in blank