For the reaction H2(g) + I2(g) ↔ 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial

106,288 results, page 76

  1. Math

    how many electrones of each element are produced in this reaction? PbS +H2O -----PbSO4+H2O
  2. Chemistry

    What is the reducing agent in the following reaction? 2K + S - - > K2S K S*** K2S None of the above
  3. Chemistry

    a+b<->c (fast) c+d->e (slow) e->f+b (fast) How do you determine the overall equation for these reaction mechanisms?
  4. Chemistry

    A second order reaction is 50 % complete in 16 minutes. How long will it take to be 82 % complete
  5. Science

    When iron is heated with sulphur, iron sulphide is formed . Name the reaction
  6. Math

    The temperature at noon is 75 degreesF. The temperature drops 3 degrees every half hour. What is the temperature at 4.pm. I'm studying Multiplying Rational numbers and I don't know how to set this up.
  7. math

    The average summer temperature in Anchorage is 69°F. If the daily temperature is normally distributed with a standard deviation of 7°F, what percentage of the time would the temperature be between 55°F and 76°F?
  8. Science

    Can someone check if these are right: Tell the reaction rate 1.)Question: one antacid tablet is placed in a glass of cold water, while another table is placed in a glass of hot water. Answer: increasing TEMPERATURE 2.) Question: a mixture of baking powder, flour, sugar, and ...
  9. Chemistry

    I need help splitting this reaction into 1/2 reactions 3I2(s) + 2MnO2(s)+8 OH-(aq)<-> 6I-(aq) + 2MnO4-(aq) + 4H2O(l) Can you identify which components are oxidised, which are reduced and those that undergo no change? Can you identify which components are oxidised, which ...
  10. Chemistry

    Consider the following hypothetical aqueous reaction: A (aq)-->B(aq)}. A flask is charged with 0.065 (mole) of A in a total volume of 100.0 (mL}. The following data are collected: Time (min) 0 10 20 30 40 Moles of A .065 .051 .042 .035 .031 Calculate the average rate of ...
  11. Redox Half Reactions

    Half reaction of 2 Al2O3 + 3 C → 4 Al + 3 CO2
  12. chemistry

    Chemical reaction formulas of: 1.)Fe + H2SO4 2.)FeS + H2SO4 3.)CS2 + S
  13. chemistry

    For the reaction that occurs in the voltaic cell Fe(s)|Fe^2+(aq)||Cr^3+(aq),Cr^2+(aq)|Pt(s) a) Determine delta G not b)Determine K
  14. Chemistry

    What is the percent yield of CO2 if the reaction of 10.0g of CO with excess O2 produces 12.8g of CO2?
  15. Chemistry

    If 1.40 grams of nitrogen is used in the reaction, how many grams of hydrogen will be needed?
  16. chemistry

    For the reaction: Mg + 2 HCl => MgCl2 + H2 a) How many grams of HCl are required to react with 62.0 g of Mg?
  17. electric chem

    What is the reduction potential for the half-reaction Al3+(aq) + 3e- Al(s) at 25°C if [Al3+] = 0.10 M and E° = –1.66 V?
  18. Chemistry

    I really need help with this; it'll be the last chemistry question I ask: 44. Identify the type of reaction. a. AB ---> A+B b. AB + C--> AC + B c. AB + CD --> AD + CB Thanks -MC
  19. chemistry

    why is this reaction spontaneous? Mg + 2Cu2+ --> Mg2+ + 2Cu+ Mg2+ + 2e --> Mg E= -2.37 V Cu2 + e --> Cu+ E= 0.15 V
  20. chemistry

    Calculate how much Hg in a reaction that produces 87.4 g O2 using: 2HgO produces 2 Hg + O2
  21. Chemistry

    In the reaction: Cu(s) + 2 Ag+(aq) ---> Cu2+(aq) + 2 Ag(s) 1.Cu 2.Cu2+ 3.Ag+ 4.Ag i know its Ag but is it Ag+ or just Ag? what does that extra plus mean?
  22. Chemistry

    What is the net ionic equation for the reaction Cu(s) + 2 Ag (NO3)2(aq) --- Cu(NO3)2(aq) + 2AG(s)
  23. chemistry

    Explain the difference between the rate of a reaction and its rate constant.
  24. acids and bases

    What is the Arrhenius acid and what is the Arrhenius base in the above reaction?
  25. Chemistry

    What is the equilibrium constant for the reaction: Si + O2 <-> SiO2 ? Is the answer just [SiO2]/[Si][O2] ?
  26. Chemistry

    How many moles of HCl are consumed by the reaction of .150 moles of magnesium?
  27. Synthesis reaction

    What are the number of reactants and the number of compounds in; 2H2(g)+O2(g)=2H2O(I)
  28. Science chemistry

    How much mgs can be obtained from 20g of mg and 20 g of s by the reaction mg+s_>mgs
  29. chemistry

    How many grams of water will be produced by the reaction of 7.00g NH3 of 9.00g of NO?
  30. Chemistry

    How many grams of aluminum oxide can be formed by the reaction of 41.2 g of aluminum with oxygen?
  31. Chemistry

    What is the reducing agent in the following reaction? 2K + S - - > K2S K*** S K2S None of these
  32. Chemistery

    Calculate the concentration of O 2 if K c = 270 for the reaction 2SO 2 (g)+O 2 (g)⇌2SO 3 (g) .
  33. Chem. Could someone check my answer.

    (1) To make NaTcO4, Tc metal is dissolved in nitric acid to make HTcO4, NO2 and H2O. Then the product HTcO4 is treated with NaOH to make NaTcO4. If you begin with 4.5 mg of Tc metal, how much of NaOH (in grams) is required to convert all of the HTcO4 into NaTcO4? Tc + 7HNO3 = ...
  34. Physics

    A projectile, fired with unknown initial velocity, lands 20.8 s later on the side of a hill, 2900 m away horizontally and 411 m vertically above its starting point. (Ignore any effects due to air resistance.) (a) What is the vertical component of its initial velocity? (b) What...
  35. think tac toe 2 adding and subracting decimals 2.

    Tim tracked the change in outside temperature one afternoon. He record a temperature of 98.3 degrees at noon. Bathe temperature then rose 5.32 degrees f over the next four hours at 5:00 pm. Tim recorded a temperature change of 108.57 degrees F, How did the temperature change ...
  36. Science

    The number of moles of H2O produced in reaction of 50ml 1.0 M HCl and 50mL 1.0 M Naoh
  37. Chemistry

    Can someone balance this equation using the half-reaction equation method? OF2 + I^- ----> F^- + I3^-
  38. chemistry-stoichiometry

    how many grams of chlorine can be liberated from the decomposition of 64.0g of AuCl3 by this reaction 2 AuCl3----> 2 Au + 3cl2
  39. chemistry

    which of the following would be the limited reagent in the reaction shown below there are 50 molecules of O2 and 50 molecules of H2
  40. kitchen chemistry

    what is the effect of heat on fruit ex. making a fruit roll up what is the chemical reaction
  41. chemistry

    If sodium iodoacetate is used instead of sodium chloroacetate, how will the rate of reaction be affected?
  42. Chemistry

    Calculate the temp at which DG for a reaction (with/ DH= -19.9 kJ/mol and DS= -55.5 J/k-mol) will be equal to 0. Is the correct answer -358.56 K?
  43. chemistry

    identify the oxidizing agent and the reducing agent in the following reaction: C + 2Clsub2 > CClsub4
  44. chemistry

    how many moles of HCl are needed to react with 2.3 moles of Zn in the following reaction? 2HCl + Zn --> ZnCl2 + H2
  45. Chemistry

    Does anyone know the condensed structured formula in the following reaction: a.CH3--CH2--CH=CH2+HOH-->H+ Thank you.
  46. 9th grade

    If a 300 N action force is exerted to the right, the reaction force will be ___.
  47. chemistry

    how many moles of oxygen (molecule) are required for complete reaction with 2.1080 moles of iron?
  48. polymer science

    how can we get copolymer from polymer give the reaction condition and how can its possible and the equation for the copolymerization.
  49. chemistry

    determine the value of x for the following reaction: 4C + S8-> 4CS2 3.2 mol S8 yield x mol CS2
  50. chemistry

    How many milliliters of 1.9 M HCl must be transfered from a reagent bottle to provide 24 g HCl for a reaction?
  51. Chemistry

    In the reaction: Cu(s) + 2 Ag+(aq) ---> Cu2+(aq) + 2 Ag(s, the oxidizing agent is ? 1.Cu 2.Cu2+ 3.Ag+ 4.Ag i know its Ag but is it Ag+ or just Ag? what does that extra plus mean?
  52. Chemistry

    How many milliters of 0.500 M magnesium nitrate can be produced from the reaction of 35.5 grams of magnesium bromide.
  53. Chemistry

    For the given reaction, how many moles of ammonia will result from 4.0 moles of nitrogen N2(g) + 3H2(g) > 2NH3(g)
  54. chemistry

    Consider the reaction, C2H4(g) + H2(g) ® C2H6(g), where DH = – 137 kJ. How many kilojoules are released when 55.3 g of C2H4 reacts?
  55. Chemistry

    What is the mass, in grams, of NaCl formed from the reaction of 2.75 mL of a 6.00 M Na2SO4 solution and 8.30 mL of 2.5 M solution of HCl?
  56. chem

    Sb2S3(s) + 3 Fe(s) 2 Sb(s) + 3 FeS(s) When 14.7 g Sb2S3 reacts with an excess of Fe, 9.84 g Sb is produced. What is the percent yield of this reaction? %
  57. Chemistry

    how many grams of ethylene (C2H4) are required for the complete reaction of 31.7 grams of hydrogen gas?
  58. chemistry

    in reaction S + O2 -> SO2, determine percent yield if 4 grams of S produced 64 gram of SO2
  59. chemistry

    in reaction S + O2 -> SO2, determine percent yield if 4 grams of S produced 64 gram of SO2
  60. Chemistry

    how many grams of ammonium sulfate is formed from the complete reaction of 700 grams of ammonie
  61. chemistry

    Silver will spontaneously reduce which of the following? Reaction E (volts) Na+ + e- ---> Na -2.71 Co2+ + 2e- ---> Co -0.28 Ag+ + e- ---> Ag .80 A) Na B) Co2+ C) Na+ D)Co E) None of these
  62. CHEM

    given the overall cell reaction Zn(s) + 2Ag(aq) --> Zn2+ (aq) + 2 Ag(aq) which will occur when the cell operates
  63. Chemistry

    What is the theoretical yield of ethyl chloride in the reaction of 19.2g g of ethylene with 48g g of hydrogen chloride?
  64. Chemistry

    From the following data, calculate ΔH° for the reaction O3(g) +NO(g)----->O2(g)+NO2 (g) Compound ΔH°f (kJ/mol) O3 142.7 NO 90.3 O2 0 NO2 33.2
  65. chemistry

    What is the value of x for the following reaction if E∘=1.43V and ΔG∘ = -276kJ ? A+B^x+→A^x++B
  66. Chemistry

    500 g of Fe reacted with water to yield 4.2 g of H2. Fe3O4 was also produced in the reaction. What is the %yield of H2?
  67. chemistry

    Following oxidation-reduction reaction by using the oxidation state method a) O2+H2O+Pb=Pb(OH)2
  68. Intro to Chem

    How many grams of water, H2O, can be formed from the reaction of 8.9 grams of 2-propanol, C3H8O?
  69. chemistry

    What is the balanced chemical equation of Shampoo? And what is the chemical reaction of it? Please i need a help ASAP! Thank you!
  70. chemistry

    How many moles of iron are expected from the reaction between 115 moles of H2 with excess Fe3O4?
  71. chemistry

    Co2(aq)->Co2(g) calculate the free-energy change for this reaction at 25 degrees Celsius.
  72. chemistry

    2KClO3-2KCl+3O2 If this reaction produced 35.2 g of KCl, how much O2 was produced (in grams)?
  73. Chemistry

    Is the unbalanced reaction for copper + silver nitrate Cu + AgNO3 = Cu(NO3)2 + Ag or Cu + 2AgNO3 = Cu(NO3)2 + Ag?
  74. science

    Proper condition for maximum yei of so3 in reaction 2so2+o2=so3+HEAT
  75. Chemistry

    If you begin with 34.4 grams of ammonia how many grams of hydrogen and nitrogen can you produce in a decomposition reaction
  76. chemistry

    What type of chemical reaction is this equation? CuO (s) + [2H+ + SO4 2-](aq) [Cu2+ + SO4 2-] (aq) + H2O (l)
  77. Chemistry

    How many grams of dichloromethane are formed from 1500.0 grams of methane, it the percent yield for the reaction is 82.5%?
  78. Chem

    A reaction of 48.5 g of Na and 53.7 g of Br2 yields 55.4 g of NaBr. What is the percent yield? 2Na(s)+Br2(g)--->2NaBr(s)
  79. CHEM

    A reaction of 48.5 g of Na and 53.7 g of Br2 yields 55.4 g of NaBr. What is the percent yield? 2Na+Br2 2NaBr
  80. chem

    determine how many grams of N2 are produced from the reaction of 8.75 g of H2O2 and 5.43 g of N2H4. 2H2O2+N2H4 4H2O+N2 g N2?
  81. Chemistry

    Calculate the cell voltage for the following reaction: 2Ag^+ (0.090M) + H2 (1atm) -> 2Ag(s) + 2H^+ (pH=4.0)
  82. Chemistry

    1. What will happen if I add water to a FeSCN+2 solution? FeSCN+2(aq) + H2O(l) <--> ???? 2. Will the equilibrium shift to the left or right? The FeCNS++ is red colored. I think adding water will simply dilute the red color. Won't it react in any way? Small highly charged...
  83. Chemistry

    Given the following reaction: 3 H2(g) + N2(g) <- -> 2NH3(g) + heat If the following changes were to occur what direction shift will it have (left or right) And what will be the reason of the shift Changes/Stress on system: Adding NH3 Decreasing the pressure Adding heat ...
  84. Chemistry

    Given the following reaction: 3 H2(g) + N2(g) <- -> 2NH3(g) + heat If the following changes were to occur what direction shift will it have (left or right) And what will be the reason of the shift Changes/Stress on system: Adding NH3 Decreasing the pressure Adding heat ...
  85. Chemistry

    A student mixes two water solutions with an initial temperature of 25 degrees C to form a final substance with a mass of 65 grams at 30 degrees C. What is the heat change in kJ?
  86. statistics

    Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers). a. (0.1 point) If you have a body temperature of 99.00 °F, what is your ...
  87. Chemistry

    A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and found to have a mass of 258 mg. What mass of baium was in the original solution? (Assume that all of...
  88. chemistry

    Suppose the ΔGof, ΔHof, and ΔSo are available and valid at 298 K. Which equation(s) could be used to calculate the change in Gibbs Energy if all product and reactant concentrations (pressures) are 1 M (1 atm) and the temperature is 298 K? Choose all that apply...
  89. Algebra

    An oven's heating element turns on when the internal temperature falls to 20 degrees below the set temperature and turns off when the temperature reaches 5 degrees above the set temperature. You preheat the oven to 420 degrees before putting a cake in and baking it for an hour...
  90. chem hwk

    a simple hwk question.. i don't understand what i need to do.. 1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of 1-butanol burns completely, how many grams ...
  91. Moorpark

    A solution contains an unknown mass of dissolved barium ion. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and then found to have a mass of 210 mg. What mass of barium was in the original solution? (Assume that ...
  92. phyisics

    an orangutan throws a coconut vertically upward at the foot of a clif 40 m high while his mate simulaneously drops another coconut from the top of the clif. the two coconuts collide at an altitude of 20 m what is the initial velocity of the coconut that was thrown upward? i ...
  93. Chemistry

    What is the maximum yield of NH3 that can be formed from 8.50 grams of N2 and 1.00 grams of H2 in the (balance) reaction N2 + 3H2---- 2NH3?
  94. Physics check

    In a nuclear reaction where energy is released, which has more mass, the products or the reactants? The reactants?
  95. Chemistry

    Balance the equation: _MnO4– + _H+ + _Fe2+ => _Mn2+ + _H2O + _Fe3+ How do you do balance this redox reaction?
  96. biology

    hi Exercise makes your heart pump faster increasing your heart rate. is there a chemical reaction for it thanks
  97. Organic Chemistry

    If sodium bromoacetate is used instead of sodium chloroacetate, how will the rate of reaction be affected?
  98. chem

    write a mechanism for the reaction of sodium chloroacetate with 4-chlorophenolate. - i know its a sn2 mechanism, but I don't know who to go about from here
  99. Biology

    In the following chemical reaction, what is carbon dioxide (CO2)? 12 H20 + 6 CO2 -> 1 glucose molecule + 6 O2
  100. Chemistry

    Consider the reaction, 3H2 + N2 → 2NH3. If H2 is reacting at the rate of 0.15 M/s, at what rate is NH3 being produced?
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