The equilibrium constant (Keq) is the ratio of ____ concentrations to ____ concentrations at equilibrium, with each concentration raised to a power equal to the number of ____ of that substance in the balanced chemical equation.

86,313 results, page 10

  1. Chem

    At a certain temperature, 0.885 mol of N2, and 2.654 mol of H2 are placed in a container. N2+3H2=2NH3 At equilibrium, there is 0.823 mol of NH3 present. Determine the number of mol of N2 and H2 that are present when the reaction is at equilibrium. Answer in moled of N2 at ...
  2. Spanish 1

    59. ¿Con ____ vas al cine? a. qué b. quién c. qué estación d. cuál B? 60. No estoy bien. Estoy ______. a. enferma b. ocupada c. deportista d. graciosa A? 61. No quiero ir el fin de semana. Voy a ir ______. a. el sábado b. el martes c. los sábados d. el sábado y el ...
  3. Chemistry

    The initial concentration for the compounds involved in the reaction displayed were determined to be [PCl5(g)] = 0.4107 mol/L, [PCl3(g)] = 0.3463 mol/L, [Cl2(g)] = 0.04085 mol/L. Calculate the value of the equilibrium constant (Kc) at 191.0 °C if the equilibrium concentration...
  4. Chemistry

    1) A Cobalt (II) ion has the electron configuration ____? and is ____? The answer choices were: [Ar] 3d5 4s2 diamagnetic [Ar] 3d7 paramagnetic [Ar] 3d5 4s2 para [Ar] 3d7 dia None of these I chose [Ar] 3d5 4s2 diamagnetic 2) Choose the corect statement concerning ionization ...
  5. accounting

    These questions are so confusing. So I was wondering what are each of the formulas to solve each question or what steps I need to take to complete them? I've been trying and I can't find the correct answer. ____ 11. The Dayton Corporation began the current year with a retained...
  6. chemistry

    Bromine gas is allowed to reach equilibrium according to the equation. Br2=2Br Kc=0.0011 at 1280°C Initial concentration of br2 is 0.063M and Br is 0.012M. How to calculate the concentration of these species at equilibrium. Please help me .
  7. Math

    One number is 10 less than a second number. Find a pair of such number that their product is as small as possible. These two numbers are ____ The smallest product is_____
  8. Spanish

    1. Mi madre insiste en que ____ en el aeropuerto a las 2. A) estabamos B) estemos C) estamos D) estar I'm confused between B and C because I don't know if I should use the indicative or subjunctive form. Please help. 2. Prohiben que los turistas les ____ comida a los animals. ...
  9. Chemistry: Equilibrium

    So, I think I'm doing everything right and even checking my math, but it keeps showing up as wrong. If someone can help me and go into detail,including the quadratic formula, I would appreciate it: Phosphorus pentachloride decomposes according to the chemical equation Pcl5(g)=...
  10. Math - calculus

    Suppose f(x)=x^p where p>1 and [a,b]=[0,1]. According to the Mean Value Theorem there is at least one number c such that f(b)−f(a)=f′(c)(b−a). In this particular case the number c is unique but it depends on p. c=____ Your answer will be in terms of p.
  11. chemistry

    Did the equation do not know the 2nd questions"s answers for the problems a) 2O3(g) = 3 O2(g) + heat (O3 IS UNDERLINED) [6.0x10-1] [0.21] b) 2 CO2 (g) + heat = 2 CO(g) +O2(g) (CO IS UNDERLINED) [0.103] [0.024] [1.18 x10-2] c) NO2(g) + O2(g) + heat =NO (g) + O3(g) (NO IS ...
  12. science

    At 472 deg C the reaction reaches equilibrium with the following composition: [H2]=7.38atm, [N2]=2.46atm, [NH3]=0.166atm. Into the equilibrium mixture 1.5 atm of N2 is introduced: a. Calculating Kp and Q, determine in which direction the reaction will proceed after addition of...
  13. Chemistry II - Concentrations

    At 30.°C, the concentration of hydronium (H3O^+) ions in an aqueous solution is 1.1 ✕ 10^−9 M. (Note: At 30.°C, the ion-product constant for water is 1.46 ✕ 10^−14.) (a) What is the concentration of hydroxide (OH^−) ions in this solution? (b)is the solution...
  14. SCIENCE 1

    for following reaction at equilibrium if we increase the reaction temperature the equilibrium will 2SO3(g)<-->2SO2(g)+O2(g)(deltaH degrees=198kJ) A. not shift B.the question can not be answered because Keq is not given C.shift to the right D. shift to the left I am going...
  15. Chemistry``

    I answered this question but I did not get the right answer. CO2 + H2 <=> H2O + CO CO2 = 0.5 mole and H2 he 0.5 mole both sollutions were forced into a 1 Litre container. K = 2 what is the equlibrium concentration of each reactant and product. as I calculated I did the ...
  16. Algebra 2

    y-1 ____ x+3 = -3/4 (equivalent ratio) can you explain the steps which you use to get this answer and why you use them . I am sorry I am a disable student and it hard some time to grasp this math fo rme.
  17. Calculus :)

    If 8000 dollars is invested in a bank account at an interest rate of 10 per cent per year, find the amount in the bank after 11 years if interest is compounded annually ____ Find the amount in the bank after 11 years if interest is compounded monthly ____
  18. chemistry

    a mixture of 0.500 mol H2 and 0.500 mol I2 was placed in a 2.00-L stainless-steel flask at 430C. Calculate the concentrations of H2, I2, and HI at equilibrium
  19. ANOTHER SCIENCE

    Consider the following reaction that has reached equilibrium: NH3 (aq) + C2H4O2 (aq) ! NH4+ (aq) + C2H3O2- (aq) ∆H = -102.1 kJ a. What will happen to the concentration of NH4+ (aq) if the temperature is raised? b. What will happen to the concentration of NH4+ (aq) if the...
  20. Chemistry

    A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell potential when the concentration of Cu+2 has fallen to ...
  21. chem 12

    This is my question Into a 500mL container a chemist introduces 2.0 x 10^-2 mol of N2(g) and 2.0 x10^-2 mol of O2(g). The container is heated to 900degrees celcius and the following equilibrium is achieved. N2(g) + 2O2----N2O4(g) calculate the intial concentrations in mol/L ...
  22. Chemistry

    The following Chemical reaction produces a precipitate in an aqueous solution. NaOH(aq)+Mg(Cl)2(aq)<->NaCl(aq)+Mg(OH)2(s) With an equilibrium constant of K=1.3. If NaOH and Mg(Cl)2 are added in stoiciometric ratio and 1.20 mol of NaOH are present at Equilibrium, how much...
  23. math

    the imaginary i or j which is ewuivalent to square root of -1 has a phase difference of ____ with real number 1. what's the answer? 0,45,90,180, or 360? and why?
  24. chem

    If equilibrium favors the right side of the equation, is the value of Keq a realtively large or small number? Breifly explain. pls. help
  25. chemistry

    At 35°C, Kc = 1.6 X 10-5 M for the reaction 2NOCI(g) 2NO(g) + Cl2 (g)' Calculate the concentrations of all species at equilibrium for each of the following systems. Note any simplifying assumptions made in the calculations. 3.0 mol NO(g) and 1.0 mol ofCl2(g) in a 1.0 L flask
  26. AP Chem

    At a particular temperature, K = 1.00 102 for the following reaction. H2(g) + I2(g) 2 HI(g) In an experiment, 1.23 mol H2, 1.23 mol I2, and 1.23 mol HI are introduced into a 1.00 L container. Calculate the concentrations of all species when equilibrium is reached.
  27. Chemistry(Please help)

    For the reaction, 2 SO2(g) + O2(g) == 2 SO3(g), at 450.0 K (Kelvin) the equilibrium constant, Kc, has a value of 4.62. A system was charged to give these initial concentrations, (SO3) = 0.254 M and (O2) = 0.00855 M, and (SO2) = 0.500 M. In which direction will it go? I think I...
  28. chm

    The equilibrium constant for the equation 2 H2(g) + CO(g) CH3OH(g) Is 19 at a certain temperature. If there are 3.11 x 10-2 moles of H2 and 5.79 x 10-3 moles of CH3OH at equilibrium in a 6.75 L flask. What is the concentration of CO? What is the Kp at 1439 °C for the reaction...
  29. chemistry

    At a certain temperature, the Equilibrium constant, Kc, for this reaction is 53.3. At this temperature, 0.500 mol of H2 and 0.500 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at Equilibrium? equation: H2 + I2 = 2HI
  30. chemistry

    Please help!!! Desperate for answer!!!? Did the equation do not know the 2nd questions"s answers for the problems a) 2O3(g) = 3 O2(g) + heat (O3 IS UNDERLINED) [6.0x10-1] [0.21] b) 2 CO2 (g) + heat = 2 CO(g) +O2(g) (CO IS UNDERLINED) [0.103] [0.024] [1.18 x10-2] c) NO2(g) + O2...
  31. vector

    the imaginary i or j which is equivalent to square root of -1 has a phase difference of ____ with real number 1. what's the answer? choices are: a.)0 degrees, along or within the force b.)90 degrees c.)360 degrees, one complete revolution d.)180 degrees e.)45 degrees, ...
  32. Economic

    Beth is single and lives in New York. Beth earned $280,000 in 2011. The following table shows the IRS tax rates for a single taxpayer in 2011 On Taxable Income .. Tax Rates up to $8,500 10% From $8,500 to $34,500 15% From $34,500 to $83,600 25% From $83,600 to $174,400 28% ...
  33. Chemistry

    At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g) <-> 2HI(g) At this temperature, 0.300 mol of H2 and 0.300 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium?
  34. Math

    For the pair of supply-and-demand equations, where x represents the quantity demanded in units of 1,000 and p is the unit price in dollars, find the equilibrium quantity and the equilibrium price. 2x + 9p - 93 = 0 and 3x - 14p + 108 = 0 a. equilibrium quantity 12,000 units; ...
  35. Chemistry

    I posted this last night, A 0.500L vessel initially contains 0.0125 mol of H2S2 . Find the equilibrium concentrations of H2 and S2. Kc = 1.67 x 10^-7 2 H2S <--> 2 H2 + S2 I have come up with this equation so far, but I am lost now because I don’t even know if this is ...
  36. chemistry

    For the reaction 2CO(g)+O2 《=》2CO2 with equilibrium constant Kc. Suppose the equation is rewritten as CO + 1/2O2 《=》CO2 with an equilibrium constant Kc'.what is the relationship between Kc and Kc'
  37. chemistry

    For the reaction 2CO(g)+O2 《=》2CO2 with equilibrium constant Kc. Suppose the equation is rewritten as CO + 1/2O2 《=》CO2 with an equilibrium constant Kc'.what is the relationship between Kc and Kc'
  38. applied

    1. ______ _____ _____ is computed by taking the sum of the absolute values of the individual forecast errors and dividing by the numbers of errors (n). 2.our job as quantitative analysts is to develop the best ____ ____ between the variable being forecast and the set of ...
  39. Chemistry

    At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g) <--> 2HI(g) Kc= 53.3 At this temperature, 0.300 mol of H2 and 0.300 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium? HI...
  40. Chemistry

    If a 4.30 M sample of A is heated to 500 K, what is the concentration of B at equilibrium? A(aq) --><--- 2B(aq) Kc=8.54 x 10^-6 at 500K ---><--- = equilibrium
  41. Chemistry

    Did I answer this equilibrium question correctly? 2CO(g) + O2(g) <-> 2CO2(g) 1) How will increasing the concentration of CO shift the equilibrium? a] to the right [i chose this] b] to the left c] no effect 2] how will increasing the concentration of CO2 shift the ...
  42. English

    1. They will attend the graduation ceremony from 4:00-6:00 p.m., and ___ they will enjoy the banquet. 2. The concert promoters worked very hard; ____ they did not manage to raise enough money to cover their expenses. 3. I was disappointed by the movie; ___; I have to agree ...
  43. chemistry

    If the equilibrium constant for the conversion of isobutane to n-butane is 2.5 what is the value of the equilibrium constant for the reverese reaction?
  44. Chemistry

    Without detailed equilibrium calculations, estimate the equilibrium concentration of SO3 when a mixture of 0.134 mol of SO2 and 0.067 mol of O2 in a 275 mL flask at 300oC combine to form SO3. 2 SO2(g) + O2(g) = 2 SO3(g) Kc = 6.3x10^9 I tried doing an ICE chart, and also tried ...
  45. Chemistry

    At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. At this temperature, 0.300 mol of H2 and 0.300 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium?
  46. Chemistry(Please respond, thank you)

    The ionization constant of HA is 4.0e-4. Using the ice table what is the equilibrium concentration of HA in terms of its initial concentration and x? HA(aq) + H2O(l) = H3O^+^(aq) + A^-^(aq) I 0.040M OM OM C -X +x +x E ? x x I thought that to find the concentration you need to ...
  47. chemistry

    For the formation of ammonia, the equilibrium constant is known to be 5.2 × 10−5 at 25◦C. After analysis, it is determined that [N2] = 3.1 M and [H2] = 0.8 M, both at equilibrium. How many grams of ammonia are in the 10 L reaction vessel at equilibium? Use the ...
  48. Spanish

    7. ¿Cómo se dice en español: The hospital is far from the town? A.) El hospital está cerca del pueblo. B.) El hospital está lejos del pueblo. C.) El hospital está cerca de el pueblo. D.) El hospital está lejos de el pueblo. 8. ¿Cómo se dice en español: The restaurant...
  49. College Chemistry 104

    A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell potential when the concentration of Cu+2 has fallen to ...
  50. Chemistry

    What are the concentrations of Cu^2+, NH3, and Cu(NO3)4^2+ at equilibrium when 18.8 g of Cu(NO3)2 is added to 1.0 L of a .400 M solution of aqueous ammonia? Assume that the reaction goes to completion and forms Cu(NH3)4^2+.
  51. Physics Please help

    A thin, horizontal 20cm×20cm copper plate is charged with 1.7×10^10 electrons. Consider the electrons are uniformly distributed on the surface. A. What is the strength of the electric field 0.1 mm above the center of the top surface of the plate? E=____ N/C B. What is the ...
  52. chemistry

    1. A solution of sodium oxalate has a pH of 7.82. The [OH-] in mol/L must be which of the following: a) 6.18 b) 1.5 x 10-8 c) 6.6 x 10-7 d) 7.82 e) -7.82 2. When 0.93 mol of O2 and 0.56 mol of NH3 are mixed together and allowed to come to equilibrium according to the equation...
  53. Chemistry

    1. Imagine you have a saturated solution of Ca(OH)2, at equilibrium, that has some undissolved Ca(OH)2 precipitated on the bottom of the test tube. If you add an additional scoop of Ca(OH)2 to the solution will concentration of [OH-] in the solution (increase, decrease, or be ...
  54. chemistry

    The equilibrium constant Kp for the following equilibrium is 33 at 298 K. What is the value of Kc at this same equilibrium at 298 K
  55. 10th grade

    A rational number is ____ a real number. a. always b. never c. sometimes its always ???????
  56. Chemistry

    A(g) + B(g) <=> AB(g) At a given temperature 1.0 mole of A and 1.0 mole of B are placed in the 1.0 litre vessel and allowed to reach equilibrium. Analysis revealed that the equilibrium concenration of AB was 0.40 molar. What percent of A had been converted to products? I...
  57. 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: Finding a Constant Kc... ...
  58. College Chemistry

    Which is the correct form of equilibrium expression of the following reaction. 2PbS(s)+3O2(g)reverse arrow 2PbOs + 2SO2g Why is the answer Kc= SO2 power 2/O2 power 3 Why in particular is this the arrangement for equilibrium expression? Thank you
  59. algebra

    Solve, 0.7x+4 is equal to or less than 1.1x-7 Simplify your answer. Type and inequality symbol; then type an integer or a decimal. The solution is {x x ___ ____}
  60. chemistry

    The following reaction is at equilibrium at a pressure of 1 atm, in a closed container. NaOH(s) + CO2(g) NaHCO3(s); ΔH°rxn < 0 Which, if any, of the following actions will decrease the concentration of CO2 gas present at equilibrium? A. lowering the temperature B. ...
  61. chemistry

    ____ 14. Adding a charged particle common to two solutes decreases solute concentration. This observation demonstrates a. the common-ion effect. c. hydrolysis. b. Le Châtelier's principle. d. buffering.
  62. general chemistry

    I've been trying to solve these for while now, and i keep getting them wrong.... please help!! A solution of NH4Cl hydrolyzes according to the equation. If the [NH3] in the solution after hydrolysis is 0.00000508 M, calculate the equilibrium concentration of NH4Cl. NH4+(aq) + ...
  63. How many sig figs?

    An equilibrium mixture of the following reaction was found to have [H2] = 0.020 M and [I2] = 0.020 M at 340°C. What is the concentration of HI? H2(g) + I2(g)--> 2 HI(g) Keq = 69 at 340°C I got .166 but it said check number of sig figs so im guessing its 2 sig figs but I ...
  64. Chemistry

    At a particular temperature, K = 2.0 10-6 mol/L for the following reaction. 2 CO2(g) 2 CO(g) + O2(g) If 1.8 mol CO2 is initially placed into a 5.9-L vessel, calculate the equilibrium concentrations of all species.
  65. chemistry

    Why do the concentrations of Pb 2+ and SO4 2- ions in a saturated solution of PbSO4 in contact with solid PbSO4 remain the same when the solution evaporates to half of its original volume? it has to do with equilibrium.
  66. HELP WITH SCIENCE FAST

    1.  Most likely, ____ were formed when lava from the moon's interior flooded bowl­like regions on the moon's surface. (1 point) maria* highlands craters basins 2.  Currently, the most supported theory of the origin of the moon is _________. (1...
  67. Chem

    I am having problems with these two questions. 1.The value of the equilibrium constant (Kp) as represented by the first chemical equation is 1.58 x 102 at 727 °C. Calculate the value of the equilibrium constant (Kp) for the second equation at the same temperature. Express ...
  68. Algebra 116

    1. The perimeter of a rectangle is 126 m. The length is 6 m more than twice the width. Find the dimension. a. What is the length ____ m? b. What is the width ____ m? 2. Two angles are complementary. The sum of the measure of the first angle and half of the second angle is 72 ...
  69. economics

    During the Enlightenment, the City of Calgary had a more-or-less free market in taxi services. Any respectable rm could provide taxi service as long as the drivers and cabs satis ed certain safety standards. Let us suppose that the constant marginal cost per trip of a taxi ...
  70. Geometry

    Hello! Thanks for checking my question out! ____ 9. Find a point E on CD such that the ratio of CE with CD is 3/8. Image URL: goo.gl/6stTqe a) -7 b) -5 c) -3 d) -1 My Answer: A Could someone please check my answer? Thanks! - Da Fash
  71. Chemistry

    Substances A and B, initially at different temperatures, come in contact with each other and reach thermal equilibrium. The mass of substance A is twice the mass of substance B. The specifi c heat capacity of substance B is twice the specifi c heat capacity of substance A. ...
  72. geometry

    prove: the segment joining the midpoints of the two sides of a triangle is parallel to the third side. the coordinates are A(0,0)B(a,0)on the the x axis, and C(c,d), M is midpoint and the coordinates of M is (c/2,d/2) and N is also a midpoint whose coordinates are (a+c/2, d/2...
  73. gen chem

    At 2273K, equilibrium constant for the reaction 2NO(g)<->N2(g)+O2(g) Kc=2.4x10^3 What would be equilibrim concentration of N2, if initial concentration of NO was 0.1160M?
  74. Chemistry

    The ionization constant for benzoic acid is 6.5x10^-5. find the hydrogen ion concentration at equilibrium when the initial concentration is .29M
  75. bioelectricity

    Cl equil-v: Only chloride may cross a membrane separating two compartments. At a temperature of 26∘C, the concentrations of chloride ions are: intracellular: 70 extracellular: 485 What is the equilibrium potential? Give a numeric answer within 1%, in mV.
  76. College Chemistry

    2NO(g)+O2(g)<->2NO2(g) has KP = 2.77 × 1011 at 25 °C. Suppose a mixture of the reactants is prepared at 25 °C by transferring 0.943 g of NO and 589 mL of O2 measured at 30.7 °C and 829 torr into a 1 L vessel. When the mixture comes to equilibrium, what will be the ...
  77. Chemistry

    An equilibrium mixture at 852 K is found to contain 3.61 x 10^ - 3 mol/L SO3. Calculate the equililbrium , constant , keq for the reaction where SO2 an O2 are reactants and SO3 is the produce.
  78. Chemistry

    Given the reaction A(g) + B(g) <-> 2AB(g) 1. What does equilibrium mean? -equal mols or pressure between reactants and products? Is there more reactants or products? 2. Will the equilibrium be the same if i started with the reactants only vs if i started with the product...
  79. math

    Matt and Anna are frequent fliers on Fast n Go Airplanes. They often fly between two cities that are a distance of 1680 miles apart. On one particular trip, they flew into the wind and the trip took 4 hours. the return trip with the wind behind them, only took about 3 hours. ...
  80. chemistry

    For the equilibrium system: H2 + F2 <----> 2HF Kc = 230 If 5.80 mol of hydrogen gas and 5.80 mole are added to a 1.00 L flask what will be the concentration of HF at equilibrium?
  81. CHEMISTRY HELP!

    Consider the following reactions and their equilibrium constants. (NO(g) + 0.5Br2(g) <===> NOBr(g) Kp = 5.3 2NO(g) <===> N2(g) + O2(g) Kp = 2.1 x 1030 Use these equations and their equilibrium constants to determine the equilibrium constant for the following ...
  82. Chemistry chemical equilibrium

    1.25 mol of NOCl was placed in a 2.50 L reaction chamber at 427 celciciu degre . After equilibrium was reached, 1.1 mole of NOCl remained. Calculate the equilibrium constant Kc for the reaction
  83. English

    Word box: barrage bigot designate diversity enigma gloat global illusion infuriate motivate pacifist queue restrict sage slake terrain vocation vow waylay wither Since he greatly enjoys woodworking and also making a living from it, his hobby and his ____ are one and the same ...
  84. English

    Word bank acquit deem devastate discredit elusive generate idolize ingratitude keepsake mortal ovation petty plight repent reverie revocation scan strand strife topple Instead of telling us how much you ____ your outrageous conduct why don't you sincerely try to reform? repent...
  85. Chemistry

    The equilibrium constant Kc for the following reaction is equal to 0.20 at 250°C. Calculate the equilibrium constant Kp for the reverse reaction at the same temperature. COCl2 (g) = CO (g) + Cl2 (g) My Answer: To find the reverse reaction of Kc, it should be 1/0.2 = 5, so the...
  86. Chemistry

    For the formation of ammonia, the equilibrium constant is known to be 5.2 × 10^−5 at 25◦C. After analysis, it is determined that [N2] =3M and [H2]=0.8M, both at equilibrium. How many grams of ammonia are in the 10L reaction vessel at equilibium? Use the ...
  87. chemistry help

    During a chemical reaction, if Q = K, what can be said about the reaction? A. The reaction still proceeds in both directions, but the net result is that the reactant and product concentrations do not change. B. The amount of product is always equal to the amount of reactant. C...
  88. chemistry

    During a chemical reaction, if Q = K, what can be said about the reaction? A. The reaction still proceeds in both directions, but the net result is that the reactant and product concentrations do not change. B. The amount of product is always equal to the amount of reactant. C...
  89. Chemistry

    A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...
  90. Chemistry

    A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...
  91. Chemistry

    When 0.20 mol of hydrogen gas and 0.15 mol of iodine gas are heated at 723 K until equilibrium is established, the equilibrium mixture is found to contain 0.26 mol of hydrogen iodide. The equation for the reaction is as follows. H2(g) + I2(g) ↔ 2HI(g) What is the equilibrium...
  92. Biology

    if the number of ____ in an atom is changed, it is no longer the same element. a)proton b)neutron c)electron I'm thinking it's A, what do you think? It could be multiple answers, too.
  93. physic

    HI!can anyone help me please, just on part b.Thank you so much. A spherical steel ball bearing has a diameter of 2.540 cm at 23°C. (a) What is the diameter when its temperature is raised to 94°C? ___ cm (b) What temperature change is required to increase its volume by 0.9%? ...
  94. Chemistry

    a 1.00-mol sample of phosphorus pentachloride placed in 10.0-L reaction flask and allowed to come to equilibrium at 250 degrees celsius; PCL5(g) = PCL3(g) Cl2(g) if the amount of chlorine in the equilibrium mixture is0.470 mol, calculate (a) the equilibrium concentration of ...
  95. chemistry

    Please help!!! Desperate for answer!!!? Did the equation do not know the 2nd questions"s answers for the problems a) 2O3(g) = 3 O2(g) + heat (O3 IS UNDERLINED) [6.0x10-1] [0.21] b) 2 CO2 (g) + heat = 2 CO(g) +O2(g) (CO IS UNDERLINED) [0.103] [0.024] [1.18 x10-2] c) NO2(g) + O2...
  96. Chem Class

    The equilibrium constant for reaction 1 is K.....? how do i figure out problems like this? do i check which ones cancel out? The equilibrium constant for reaction 1 is K. The equilibrium constant for reaction 2 is ___? (1) SO2 (g) + (1/2) O2 (g) (right and left arrows)SO3 (g...
  97. Chemistry

    The compound NOCl decomposes to nitric oxide and chlorine according to the following equation: 2 NOCl (g) → 2 NO (g) + Cl2 (g) Suppose that 0.550 mol NOCl is placed in a 2.00-L flask at a given temperature. When equilibrium has been established, it is found that the ...
  98. Physics

    Tom the cat is chasing Jerry the mouse on a table. Jerry puts on the brakes and stops and Tom continues right off the edge of the table at 4.00 m/s. If it takes Tom 0.50 seconds to hit the ground, then the table is approximately ____ meters high and Tom hit the ground a ...
  99. Physics

    Tom the cat is chasing Jerry the mouse on a table. Jerry puts on the brakes and stops and Tom continues right off the edge of the table at 4.00 m/s. If it takes Tom 0.50 seconds to hit the ground, then the table is approximately ____ meters high and Tom hit the ground a ...
  100. MATH

    Matt and Anna are frequent fliers on Fast n Go Airplanes. They often fly between two cities that are a distance of 1680 miles apart. On one particular trip, they flew into the wind and the trip took 4 hours. the return trip with the wind behind them, only took about 3 hours. ...
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