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 75

  1. Chemistry

    what mass of nitrogen dioxide (8NO2) will form by reaction of 3.50 mole of perchloric acid (13HClO4) with excess methylamine (8CH3NH2)? Answer is 99.1 g. How do you work this?
  2. science

    Represent this reaction with balanced chemical equation. Disilane gas (Si2H6) undergoes combustion to form solid silicon dioxide and water.
  3. Chemistry

    Write a balance equation for the reaction of nitric acid (HNO3) with each base solution : [1]. NaHCO3, [2]. MgCO3. ( Please include the phases of the substance)
  4. chemistry-chemical kinetics

    by what factor is the rate of detoxification changed if a liver enzyme lowers the activation energy of the reaction by 5 kJ/mol at 37 degree celsius?
  5. chemistry

    if 45 g of calcium carbide reacts with 23 g of water, how many liters of acetylene can be produced, assuming the reaction goes to completion at 60 degrees fahrenheit and 763 mmHg
  6. azad university

    solving advance reactor ideal gas with the this reaction : 4ph3 ->p4+6h2 (xa=0.5 , T=400k) , P=20 atm) how much volume we need until Xa=0.5 ?
  7. Chemistry

    How many grams of CS2(g) can be prepared by heating 12.9 moles of S2(g) with excess carbon in a 7.00 L reaction vessel held at 900 K until equilibrium is attained? Stoichiometry is 1 to 1
  8. Chemistry

    Identify the atom that increases in oxidation number in the following redox reaction. 2MnO2 + 2K2CO3 + O2 2KMnO4 + 2CO2 *A.) Mn B.) O C.) K D.) C Please show work Thank you.
  9. physical science

    Help please. Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will decrease the reaction rate?
  10. Chemistry

    What happens if sodium acetate (CH3COONa) is added to the following reaction? CH3COOH  H+ + CH3COO- a) [H+] increases b) [H+] decreases c) a precipitate is formed d) [H+] does not change
  11. science

    calculate the concentration for the reaction of 0.25mole 0f sodium hydroxide NaOH and water H20 solution of 250cm^3. Provide the answer in cubuc decimeter
  12. Chem

    How many grams of CS2 can be prepared by heating 11.0 moles of S2 with excess carbon in 5.20 L reaction vessel held at 900 kelvin until equilibrium is attained?
  13. chemistry

    Arrange the three metals in order of their relative strengths as reducing agents, placing the strongest first. Write each metal as a half reaction.
  14. english

    Which one of the following is a correct example of the singular possessive case? A. king's rights B. audiences' reaction C. women's club D. who's job I think it's C.
  15. chemistry

    What would Qc be if the volume of the container decreased by a factor of 1.774 for the following reaction? PH3(g) + BCl3(g) → PH3BCl3(s) KC = 534.8 at 353.0oC
  16. Chemistry

    Given the Na+/Na and K+/K half-cells, determine the overall electrochemical reaction that proceeds spontaneously and the E0 value. Answer in units of V Can you please explain the steps?
  17. Science(chemistry)

    Give one word/term for the following descriptions during this type of reaction,the appearance,colour or shape of a substance is changed
  18. Chemistry

    5.2 grams of magnesium metal are place in 400.0 mL of 1.0 M hydrochloric acid. The balanced equation for the reaction is: Mg + 2HCl = MgCl2 + H2. How many moles of H2 gas were produced?
  19. chemistry

    1.15g of acetylsalicylic ia recovered from an aspirim synthesis reaction that began with 2g of salicylic acid, what would be the percentage yield for the preparation? show your computations
  20. chemistry

    Use Hess's Law and a table of heats of formation to determine the enthalpy for the following reaction. 3SO2(g) + 3H2O(g) + 3/2O2(g) --->3H2SO4(l) ΔH = ?
  21. chemistry

    Use Hess's Law and a table of heats of formation to determine the enthalpy for the following reaction. 3SO2(g) + 3H2O(g) + 3/2O2(g) --->3H2SO4(l) ΔH = ?
  22. chem

    Consider the chemical reaction, 2Al + 3Cl2 → 2AlCl3. Here, 56 g of Al can produce 415.14 g of AlCl3 (Molar masses: Al = 26.98 g; Cl = 35.45 g). true or false
  23. Chem---DrBob222

    What are the relative rates of reaction of primary, secondary and tertiary alkyly halides in an SN1 substitution? Explain the reason for your answer? Thank you so much?
  24. chemistry

    The value of ΔH° for the reaction below is -1107 kJ: 2Ba (s) + O2(g) → 2BaO (s) How many kJ of heat are released when 5.75 g of Ba (s) reacts completely with oxygen to form BaO (s)?
  25. chemistry

    The value of ΔH° for the reaction below is - 6535 kJ. __________ kJ of heat are released in the combustion of 16.0 g of C6H6(l)? 2C6H6(l) + 15O2(g) → 12CO2(g) + 6H2O (l)
  26. Science

    How does Exothermic and Endothermic reactions affect the rate of a reaction? Please help. I need something that will be easy for me to understand and adopt into my own words. Thank You :)
  27. Chemistry

    For the reaction 4FeCl2(aq) + 3O2(g) → 2Fe2O3(s) + 4Cl2(g), what volume of a 0.650 M solution of FeCl2 is required to react completely with 8.58 × 1021 molecules of O2?
  28. chemistry

    How much H2 gas at STP can be produced by the reaction 2 Na(s) + 2 H2O(ℓ)heat−→ H2(g) + 2 NaOH(aq) of 3.90 g of Na and excess water? Answer in units of L.
  29. Chemistry

    Identify the precipitate in this reaction: calcium nitrate reacts with sodium phosphate. 2Na3PO4 + 3Ca(NO3)2--->6NaNO3 + Ca3(PO4)2 is that right ?
  30. Chemistry

    H2 +Br2 =2HBr so suggest twoo reasons why all the collisions between hydrogen and bromine gas molecules do bot result in reaction?
  31. Biology

      Which one of the following reactions occurs in the cristae of the mitochondria?   A. The prep reaction  B. Glycolysis  C. The electron transport chain  D. The citric acid cycle  B? 
  32. chemistry

    Could you please tell me the objective, theory and mechanism,result, precautions and applications of following experiment : reaction of 4-aminotoluene and o-vanillin(preparation of azomethine)
  33. english

    the author of my brothers keeper mainly develops jamies character through A. his actions b.dialogue and thoughts c.the narrators description d.others reaction to him
  34. chemistry

    What mass of carbon dioxide can be produced from 4 moles of sodium bicarbonate according to the following unbalanced reaction, NaHCO3 --> Na2CO3 + CO2 + H2O?
  35. chemistry

    A chemist mixes 96.8 g of ammonia, NH3, with 188 L of O2 at STP. How many grams of NO will be produced? The balanced equation for this reaction is: 4NH3 +5O2 = 4NO + 6H2O
  36. Chemistry

    Consider this reaction N2g+O2g+2NOg H=180.5kj How much heat would be required to produce 1.300 mol NOg?
  37. earth science

    When I bumped the table, the coffee in my cup spilled out. Newton's _____ law explains this reaction. 1st 2nd 3rd
  38. Chemistry

    For the reaction, calculate how many grams of the product form when 3.2 g of Mg completely reacts. Assume that there is more than enough of the other reactant. 2Mg(s)+O2(g)→2MgO(s)
  39. Chemistry

    Write a net ionic equation for the overall reaction that occurs when aqueous solutions of potassium hydroxide and oxalic acid (H2C2O4) are combined.
  40. CHEM 1411

    What mass of Gallium chloride is formed by the reaction of 2.6 L of a 1.44 M solution of HCl according to the following equation: 2Ga+ 6HCl= 2GaCl3+3H2
  41. chem 1411

    what mass of H2 is produced by the reaction of 118.5 mL of a 0.8775M solution of H3PO4 according to the following equation: 2Cr+2H3PO4= 3H2+2CrPO4
  42. Chemistry

    Calculate the number of liters of hydrogen gas at STP that could be produced by the reaction of 4.80g of magnesium with excess hydrochloric acid. Mg+HCl=MgCl2+H2
  43. chemistry

    How to balanced chemical equation and identify the type of reaction for solid ammonium nitrate decomposes into dinitrogen monoxide gas and water
  44. chemistry

    Determine the order of reducing agents (strongest to weakest). A) Mn(s) > Zn(s) > Cr(s) > Fe(s) B) Fe(s) > Cr(s) > Zn(s) > Mn(s) C) Mn(s) > Fe(s) > Cr(s) > Zn(s) D) Zn(s) > Mn(s) > Cr(s) > Fe(s) I know the half reaction for the following: - ...
  45. Chemistry

    In H2SO4 + 2NaOH = 2H2O + Na2SO4 How much of the excess reagent will remain after the reaction has been completed? I know that NaOH is the limiting reactant
  46. chemistry

    I need to identify the elements oxidized and reduced and indicate which substances are the oxidizing and reducing agents for the redox reaction: PH3(g) + O2(g) → P2O5(s) + H2O(g)
  47. Chemistry

    An aqueous solution of ammonium nitrate NH4NO2 decomposeds when heated to give off nitrogen. This reaction may be used to prepare pure nitrogen. How many grams of ammonium nitrite must have reacted if 3.75dm^3 of nitrogen gas was collected over water at 26 degrees C and 97.8 ...
  48. chemistry

    QUESTION: Calculate the standard free-energy change (deltaG°) for the following reaction at 25 °C in kJ. 2Ag^3+(aq) + 3Zn(s)<==> 2Au(s) + 3Zn^2+(aq) here's what i have so far: first i wrote out the half reactions: Au^3+(aq) + 3e^- --> Au(s) = +1.52*2 Zn(s) --> Zn...
  49. Chemistry

    If a solution containing 52.044 g of mercury(II) chlorate is allowed to react completely with a solution containing 15.488 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after the reaction? I have ...
  50. Chemistry

    For a reaction between sodium phosphate and strontium nitrate write out the following: a) The balanced molecular equation b) The ionic equation c) The net ionic equation a) I think I have this one: 2 Na3PO4 (aq) + 3 Sr(NO3)2 (aq) --> 6 NaNO3 (aq) + Sr(PO4)2 (s) b) Should I ...
  51. PHYSICS

    Bricks have a thickness of 12 cm, if an external wall of the house measures 10 mx 15m, calculate the rate of heat exchange through this wall if the inside temperature is 200C and the outside temperature is 50C.
  52. check.

    12. The substance produced by the light-reaction and used in the light-independent reaction is A. water B. oxygen C. hydrogen D. carbon dioxide hi there so I belive that the answer is b or d but i am leaning more toward b is that correct? Your question is really not phrased ...
  53. chemistry

    A 10.0 grams piece of gold 90.0 Celsius was stirred into 15.0ml of water at an initial temperature of 25.0 degrees Celsius. The final temperature of the water was 26.34 degrees celsius. Calculate the specific heat of gold. The specific heat of water is 4.184 J/g- degrees celsius
  54. grammar

    I don't know how to correct these sentences that are gramatically incorrect (according to Word). 1. Observed the reaction time for each mixture. 2. The primary alcohol reacted the quickest and the tertiary alcohol reacted the slowest. Thanks in advance. I don't know how to ...
  55. Math

    If the morning temperature is 24degrees and the overall temperature is 7 degrees, what is the evening temperature.
  56. math

    If the temperature is 3°f at 10:00 p.m, and the temperature falls four degrees overnight, what is the resulting temperature
  57. math

    if the temperature is -3f at 10:00 pm and the temperature falls four degrees overnight what is the resulting temperature
  58. Math

    Highest temperature was 58degree c and lowest temperature was -88 degree c.what is the temperature deference?
  59. Chemistry

    A 1.50 L portion of 0.100M sulfamic acid, HSO3NH2, is placed in the bottom of a 10.0 L glass lined stainless steel chamber. A dish containing 17.25g of solid NaNO2 is floated on the acid. A thin open ended U tube containing a pool of liquid mercury is connected to the chamber ...
  60. organic chemistry

    I can't figure out the answer please help. 1. Which of the following would you expect to have the weakest C-X bond? A)CH3Cl B)CH3CH2Br C)CH3F D)CH3CH2I E)(CH3)2CHBr 2. Which of the following haloalkanes would not undergo the reaction below? R-X + CH3S^ ----> CH3SR + X^- A)(...
  61. LAB!!

    I have to find the molar enthalpy of combustion of pentane. I have this info: 5C(s) + 6H2 >>> C5H12 Hf= -173.5kJ C+O2>>> CO2 Hf= -393.5kJ H2 + 1/2O2 >>> H2O Hf= -241.8kJ H2O >>> H2O Hf= +44.0kJ THEN I am given this: mass of pentane= 2.15g ...
  62. Chemistry

    Please write down the redox reactions (using the half-reaction method!) a)Cl2 from OCl- and Cl- in acidic solution b)Br2 from BrO3- and Br- in acidic solution -You don't have to do both, but could you help me step up the half reactions especially for OCl- --> Cl2
  63. 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 of the products at ...
  64. Chemistry

    If 18.80 grams of hydrochloric acid are reacted with a large amount of aluminum metal, what volume of hydrogen gas would be produced at STP? (Hint: start by writing a balanced equation for the reaction.) 3HCl + Al -> 3H + AlCl3 18.80g moles= grams/mw 18.80/109.5 0....
  65. AP Chem

    which would be the limiting reagent in the reaction: 2H2(g) + O2(g) => 2H2O(g) 1. 50 molecules of H2 or 2. 50 molecules of O2
  66. chemistry

    How many grams of potassium sulfide are produced from the reaction of 1.23 moles of potassium with sulfur?
  67. Chem

    Which of the following is the formation reaction for CaO(s) Ca(s)+ 1/2O2(g)arrow Cao(s) is that right
  68. Science

    Which side of the equation are the reactants and products on? Which side is energy in an exothermic reaction?
  69. organic

    What product(s) would you expect from the reaction of 1 mol of 1,3-butadiene and 2 mol of Cl2?
  70. chemistry

    How many moles of acid were present in 50 ml or 1.0M HCl? How many moles of water were produced in this reaction?
  71. A & M

    how many grams of CaO are required for complete reaction with the HCl in 275mL of a 0.523 M HCl?
  72. chemistry

    2H2O2 --- 2H2O + O2 is this a redox reaction if so what is the oxidized reactant and reduced reactant
  73. Chemistry

    How can one tell if a reaction is of the first order, the second order or the third?
  74. chemistry

    what is the number of mole equivalents of H2 produced by the reaction of 1 mole equivalent of Mg (m) with H2SO4 (aq)?
  75. chemestry

    true or false the equivalence point is the point at which a neutraliztion reaction has occured
  76. Chemistry

    Zn + HCl --> ZnCl2 + H2 If 18 grams of Zn are used in the following reaction, how many grams of H2 will be produced?
  77. Science

    The chemical eqaution H squared + Cl squared > 2 HCl represents which type of reaction? Thanks, if you can get it):
  78. che

    1.0M FeCl3(H2O)6 IN 2M HCl + 2.0M FeCl2(H2O)4 WHAT ARE THE MAIN CHEMICAL REACTION...
  79. Science

    How many moles of H2(g) will be formed in the reaction between 0.99 mol CaH2}(s) and 1.32 mol H2O(l)?
  80. PHYSICS PLEASE HELP !!!!!

    If a mass lies on an incline, what is the reaction force to the weight of the mass?
  81. ap chem

    P4 + F2 = PF3 What mass of F2 is needed to produce 120 gm of PF3, if the reaction has 81.1 % yield?
  82. Chemistry

    125 mL of 1.00 HCl with 9.00 g of KOH. if the yield of KCL is 7.51 g what is the percent yield of the reaction
  83. chemistry

    In the reaction:Zn+ 2HCL>ZnCl2+h2.What mass ZnCl2 is produced when 10g of zn reacted
  84. chemistry

    In the reaction:Zn+ 2HCL>ZnCl2+h2.What mass ZnCl2 is produced when 10g of zn reacted
  85. chem

    what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst.
  86. science

    what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst
  87. chemistry

    What is the theoretical yield of ethyl chloride in the reaction of 20.2 of ethylene with 53 of hydrogen chloride?
  88. CEMISTRY

    Consider a weak acid HX. If a 0.10 M solution of HX has a pH of 5.87 at 25°C, what is ΔG° for the acid's dissociation reaction at 25°C?
  89. chemistry

    what is the ionization reaction and acid ionization constant expression for the HS- ion in water?
  90. chemistry

    what is the balanced equation for the reaction of potassium dichromate and potassium hydrogen phthalate?
  91. Chemistry

    what is the rate of a first-order reaction that has a reactant concentration of 1.1M and a rate constant of 0.14/s?
  92. chemistry

    A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium:
  93. chemistry

    A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium:
  94. chemistry

    in the reaction Al2O3= Al+O2 if 742.5 grams of Al2O3 are used how many mols of Al will be produced?
  95. Living Enviroment

    - What is the purpose of the DNA Sequencing? -What is the purpose of the Polymerase Chain Reaction?
  96. Chemistry

    If 1.5g of CaO is mixed with 2.5M HNO3 how many moles of CaO were reacted and what type of reaction is this ?
  97. Chemistry

    Why would you subtract the heat capacity of the calorimeter when calculating the heat of the reaction?
  98. chemistry

    In the electrolytic refining of copper, write equation for the reaction of the impure copper.
  99. chemistry

    how many grams of zinc chloride could be formed from the reaction of 3.57 g of zinc with excess HCL
  100. Chemistry

    How many grams of magnesium oxide could be formed from the reaction of .248g of magnesium metal?
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