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

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  1. Chemistry

    The energy necessary to start a chemical reaction is called the _______ energy. a)exothermic b)activation c)endothermic d)combustion
  2. chemistry

    For the reaction C3H8+5CO2=3CO2+4H2O How many grams of O2 react with 8.80grams of C3H8? I think the ans is 32.0gO2
  3. Chemistry

    How much water can be produced from the complete reaction of 2.56 L of oxygen gas, at STP, with hydrogen gas answer in units of g.
  4. Chemistry

    How much water can be produced from the complete reaction of 2.56 L of oxygen gas, at STP, with hydrogen gas answer in units of g.
  5. College Chemistry

    The value of ΔG°f at 25°C for gaseous mercury is 31.85 KJ/mol. What is the vapor pressure of mercury at 25°C? [Hint: calculate the Kp for the reaction Hg(l)=Hg(g)]
  6. Chemistry

    Determine the mass of phosphoric acid that can be produced by the reaction of 1 ton of phosphate rock, Ca(PO4)2, and sulfuric acid.
  7. Chemistry

    Determine the mass of phosphoric acid that can be produced by the reaction of 1 ton of phosphate rock, Ca(PO4)2, and sulfuric acid.
  8. Chemistry

    Determine the mass of phosphoric acid that can be produced by the reaction of 1 ton of phosphate rock, Ca(PO4)2, and sulfuric acid.
  9. Chemistry

    If 3.0 moles of HCl are consumed in the reaction below, how many moles of FeCl3 are produced? 6HCl + Fe2O3 --> 2FeCl3 + 3H2O
  10. chemistry

    Determine how many liters of nitrogen will be required to produce 87.0 liters of ammonia. The balanced equation for this reaction is: 3H2(g) + N2(g) ==> 2NH3(g).
  11. science

    How many grams of CO are needed to react with an excess of Fe2O3 to produce 558 g Fe? The equation for the reaction is: Fe2O3(s) + 2 CO(g) → 3 CO2(g) + 2 Fe(s)
  12. physical science

    the attraction or pull of a person"s body toward the earth by the earth is called weight.the reaction to this force is the:
  13. chemistry

    when water is combined with magnesium nitride to produce magnesium hydroxide and ammonia gas, is this reaction endothermic or exothermic and why?
  14. chemistry

    Write down a balanced acid-base reaction given the following reactants Reactants: NaOH(aq) + HCl(aq)
  15. Chemistry

    determine the mass of sodium chloride produced when chlorine reacts with 0.29 g of sodium iodine in a single replacement reaction
  16. Chemistry

    determine the mass of sodium chloride produced when chlorine reacts with 0.29 g of sodium iodine in a single replacement reaction
  17. Chemistry

    Give the molecular, complete ionic, and net ionic equations for the reaction of barium nitrate and sodium sulfate.
  18. Chemistry

    Give the molecular, complete ionic, and net ionic equations for the reaction of phosphoric acid and magnesium carbonate.
  19. Chemistry

    Give the molecular, complete ionic, and net ionic equations for the reaction of sulfuric acid and barium hydroxide.
  20. Chemistry; Check

    1. The amount of heat absorbed in a chemical reaction is measured with a thermometer. a. true b. false answer: False
  21. CHEMISTRY!!!

    Calculate the equilibrium constant for the following reaction of a weak acid and base HF + NH3 <=> NH4+ + F- given Ka (HF) = 6.9 x 10^-4 and Kb (NH3) = 1.8 x 10^-5 and Kw = 1.0 x 10^-14
  22. Chemistry

    In the following reaction, how many grams of ammonia (NH3) will produce 300 grams of N2? 4NH3 + 6NO d 5N2 + 6H2O
  23. Chemistry

    How many liters of Chlorine at STP will react with 35L of 02 at STP given the following reaction? 2Cl2(g) + 7O2(g) - 2Cl2O7(l)
  24. chemistry

    in the reaction 2Na + Cl2 --> 2NaCl how many grams of NaCl are produced when 25 g. of sodium reacts completely to form NaCl?
  25. chemistry

    How do I balance this equation. Give the complete or "molecular" equation for the predicted partner exchange reaction. FeCl3 and NH3
  26. chemistry

    How many grams of sodium were isolated from the decomposition of 0.0292 moles of Na2O, if the reaction occurred with a 44.9% percent yeild? 2 Na2O(s) --> 4 Na(s) + O2(g)
  27. Chemistry

    If C(s) + CO2(g) <-> CO(g), when equilibrium is established at 1000K, the total pressure in the system is 4.70 atm. A. If kp= 1.72, what are the partial pressures of CO and CO2? B. What is Kc of the reaction?
  28. chemistry

    The vapor pressure of water @ 80 degrees C is 0.467 atm. Find value of Kc for the reaction H2O(l) to H2O(g) @ this temp.
  29. Chemistry for Engineers

    How many mL of .2475M Sr(OH)_2 solution are needed to neutralize 25 mL of 0.1542M HCL solution in the reaction 2HCl + Sr(OH)_2 -> SrCl_2 + 2H_2_O
  30. chemistry

    the reaction CO + 2H2<----->CH3OH has a delta H -18 kJ. how will the amount of CH3OH be affected by the following. a) removing H2(g) b) decreasing the volume of the container.
  31. organic chemistry

    An ether and an alkene are formed as by-products in this reaction. Draw the structure of these by-products and give mechanism for their formation.
  32. Chemistry

    For the following reaction: 6ClO2 (g) + 3H2O (l) = 5HClO3 (l) + HCl (g) If a chemist wants to make 55.0 g of HCl, how much ClO2 is needed?
  33. Chemistry

    How has the equilibrium been modified in Haber Process? what is the heat value for the following exothermic reaction : Hb(aq) + O2(aq) = HbO2(aq) + (Heat ?)
  34. Chemistry

    NaHCO3+CH3COOH→H2CO3+NaCH3COO the mass of can changes after reaction, what would be a logical mass?
  35. Chemistry

    For the reaction 2Na (s) + Cl2 (g) --> 2NaCl (s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl2 (at STP)? What is the limiting reactant?
  36. Chemistry

    What is the pH of a 0.125 M solution of a weak base if ∆H° = -28.0 kJ and ∆S° = -175 J/K for the following equilibrium reaction at 25°C: B (aq) + H2O (l) ↔ BH+ (aq) + OH- (aq)
  37. science

    If 20g of Ca(0H)2 took part in the following reaction, how much CaCl2 would be formed. Ca(0H)2 + 2HCl to CaCl2 +2H20
  38. science

    If 100g of CuSO4 took part in the following reaction how much Cu(0H)2 would be formed CuSO4 + 2NaOH to Na2SO4 + Cu(OH) 2
  39. chemistry

    If you ran silver nitrate on tap water and distilled water,which one may show a slightly positive reaction? Why?
  40. BioChem

    Write the chemical equation for the reaction that occurs when you add NaOH solution to NaH2PO4/Na2HPO4 buffer solution
  41. Chemistry

    For the reaction, calculate the moles of indicated product produced when 5.00 moles of each reactant is used. 4Li(s)+O2(g)+ < 2Li2O(s) (Li2O)
  42. chemistry

    on my selected thermodynamic data i cant find delta H for SiCl4(L) (i can solve the reaction i just cant figure out what SiCl4(L) is.
  43. chem 1046

    calculate the equilibrium constants at 25°C for each reaction. ΔGf° for BrCl(g) is −1.0 kJ/mol Br2(g) + Cl2(g) 2 BrCl(g)
  44. Chemistry

    For the reaction N2O4(g)=2NO2(g), the value of K at 25 degrees XCelsius is 7.19*10^-3. Calculate N2O4 at equilibrium when NO2 =2.20 *10^122 mol/L?
  45. Chem

    Given that 277J of heat are absorbed when 1.12g of sodium nitrate are dissolved in water, calculate the heat of reaction.
  46. College Chemistry

    what is the percent yield of SiF4 using the mixture in the previous question if 8.76g of SiF4 is obtained from the reaction
  47. Chemistry 1115

    What is the chemical equation for the reaction that occurs when you add 0.1 M NaOH solution to the HC2H3O2-NaC2H3O2 buffer solution?
  48. Conestoga

    predict whether a solid will form. Identify the solid and write the balanced equation for the reaction. Na2S(aq)Cu(NO3)2(aq)
  49. chemistry

    In the following reaction, how many grams of ammonia (NH3) will produce 300 grams of N2? 4NH3 + 6NO -> 5N2 + 6H2O
  50. chemistry please help!!

    what is the net ionic equation for the reaction between a strong acid and a strong base? what does it mean by this question?/ (: thanks.
  51. chemistry

    How many mL of 0.40M NaOH are need to neutralize 30.0 mL of 0.50 M H2SO4 according to the following reaction. 2NaOH(aq) + H2SO4 (aq)----Na2SO4 (aq) + 2H2O(l)
  52. Chemistry

    Solid mercury breaks down when heated forming the elements mercury and oxygen. write an equation for this reaction
  53. Chemistry 104 PLEASE HELP ME!!

    Calculate Eo (reduction potential) for the following balanced reaction. NiO2 + 2H2O + 2Fe(OH)2 Ni(OH)2 + 2Fe(OH)3
  54. Chemistry

    50.0mL of 1.04moles HA is added to 50.0mL if 0.90moles NH4OH.With a 1:1 stoichiometric ratio. What is the limiting reactant in moles of this reaction.
  55. Chemistry

    Fe2O3(s) + 2Al(s)-> 2Fe(l) + Al2O3(s) What is the theoretical yield of iron if we begin the reaction with 10.5 g of Al (assume an excess of Fe2O3)
  56. Chemistry

    How much water can be produced from the complete reaction of 3.64 L of oxygen gas, at STP, with hydrogen gas? Answer in units of g
  57. Chem.

    N2+3H2 <-> 2NH3, The equilibrium constant for the chemical equation is Kp = 0.143 at 225 °C. Calculate the value of the Kc for the reaction at 225 °C.
  58. Chemistry

    Consider the following reaction. A(aq) (Two way arrows) 2B(aq) Kc = 7.94*10^-6 at 500K If a 2.70 M sample of A is heated to 500K what is the concentration of B at equilibrium?
  59. science

    Given the following reaction: CaC2 + 2 H2O C2H2 + Ca(OH)2 How many moles of Ca(OH)2 will be produced if 5.800 g of CaC2 are reacted completely?
  60. chemistry

    Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?
  61. chemistry

    Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?
  62. Chemistry

    A solution of X2CO3 has a concentration of 15.2 g/dm^3. 25 cm^3 of this solution require 27.5 cm^3 of 0.2 M HCl for complete reaction. Calculate the ralative atomic mass of X
  63. chemistry

    why do we use the limiting reactant data to calculate delta h? why might it be important to know delta h prior to running a reaction?
  64. Chemistry

    The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate DEO for the following reaction. H2O (l) → H2 (g) + 1/2 O2 (g)
  65. Chemistry

    The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate ∆E° for the following reaction. H2O (l) → H2 (g) + 1/2 O2 (g)
  66. Chemistry

    3NO2 + H2O -> 2HNO3 + NO Calculate the percent yield for the following reaction if 76.8 g of H2O reacted and 125 g of NO were produced.
  67. Physical Science HELP

    What and how do I balance this if it needs to be done? Help please Balance the equation, if necessary, for the reaction between zinc and iodine. Zn + I2 „_ 2ZnI2
  68. chemistry

    In a titration, 4.1 g of an acid (HX) requires 32.8 mL of 0.74 M NaOH(aq) for complete reaction. What is the molar mass of the acid? Answer in units of g/mol.
  69. chemistry

    For the following chemical reaction, how many moles of silver iodide (AgI) will be produced from 4 mol of calcium iodide (CaI2)?
  70. Chemistry

    What is the concentration of acid or base remaining after reaction if 21 ml of 0.54 M sulfuric acid is mixed with 39 milliliters of 0.12 M sodium hydroxide?
  71. Chemistry

    What is the balanced equation of reaction between glacial acid, benzoic acid and sodium hydrogen carbonate solution
  72. Physical science

    Consider the following reaction that occurs at STP:what mass of N2 gas is needed to react with 12g H2 gas?
  73. chemistry

    The rate constant of a reaction is 6.2 x 10^-3s-1 at 25 degrees C, and the activation energy is 33.6 KJ/mol.. What is k at 75 degrees C? Enter your answer in scientific notation.
  74. chemistry

    0.443g of silver metal was obtained wen 0.784g of silver nitrate decomposes. What is the percentage yield of the reaction
  75. chemistry

    a 36 grams sample of calcium hydroxide is allowed to react with 40.5 grams of phosphoric acid according to the following reaction.
  76. Chemistry

    N2 + 3H2 =2NH3 How many molecules of H2 are represented in the reaction? How many nitrogen atoms are represented in the reactants? How many moles of NH3 are formed?
  77. CHEMISTRY

    THE BASICITY OF TETRAOXOSULPHATE6 ACID IS 2.EXPLAIN THE STATEMENT WITH EQU SHOWING REACTION BTW ACID&POTASRGUM HYDROXIDE
  78. Chemistry

    If the reaction 2H2O2 →2H2O+O2 has a 45% yield, what is the molarity of the H2O2 solution if 2.5 L of this solution pro- duces 150 g of O2?
  79. chemistry

    QUESTION 9 The number of moles of the reagent in excess can be used to calculate the moles of the products of the reaction. TRUE FALSE
  80. Chemistry

    B2O3(s) + 3C(s) + 3Cl2 (g) ---> 2 BCl3(g) + 3CO(g) How many moles of chlorine are used up in a reaction that produced 0.35 kg of BCl3 I do not understand please help
  81. Chemistry

    What are the products of the neutralization reaction between hydrochloric acid and magnesium hydroxide? a. MgCl and H2O b. MgCl2 and H2O**
  82. Chem

    What is the conversion of the sodium salicylate to salicylic acid reaction? C6H4(OH)(COONa) + 1/2 H2SO4 -> C6H4(OH)(COOH) + 1/2 Na2SO4
  83. chemistry

    What is the balanced molecular,total ionic, and net ionic equations illustrating the reaction of magnesium hydroxide and HCl
  84. Chemistry Help

    For the reaction 2HI(g) <----> H2(g) + I2(g), Kc = 0.0198 at 721K. What is the HI concentration at 721K if [H2] = 0.120 M and [I2] = 0.0150 M? I'm getting .303 M but that's not one of the options.
  85. Chemistry Help

    For the reaction 2HI(g) <----> H2(g) + I2(g), Kc = 0.0198 at 721K. What is the HI concentration at 721K if [H2] = 0.120 M and [I2] = 0.0150 M? I'm getting .303 M but that's not one of the options.
  86. chem

    If 6.64 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? Can plz explain how to do it Thank You
  87. chemistry

    H2O2 + KI = I2 + KOH IS this correct for a redox reactions? what does H2SO4 + Sugar turn into? from a redox reaction standpoint?
  88. chemistry

    The basicity of tetraoxosulphat(iv)acid is 2 explain this statement with an equation showing the reaction between the acid and potassium hydroxide
  89. chemistry

    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 of 1-butanol have burned? grams =33.1 bu then Now, How many ...
  90. Chemistry

    What is the chemistry behind the ASA – FeCl3 reaction?
  91. Chemistry

    What is the chemistry behind the ASA – FeCl3 reaction?
  92. Science

    (FOR PLANTS) What is chemical reaction and how do plants use it?
  93. chemistry

    which of the following is reduced in the reaction: Cu(NO3)2 + Zn --- Zn(NO3)2 + Cu
  94. chem

    if the delta h for the reaction A + 2B -> C is 150 kj, delta h for 6A + 12B -> 6C is what?
  95. Chemistry

    I'm doing a chemistry lab called colorimetric equilibrium study of a complex ion. But I just have one question which is how to obtain CS which is the total stoichiometric molarity of thiocynate ion and CF which is iron (III) iron. Fe+3 + SCN --> Fe(NCS)^+2 Fe(NCS)^+2 + SCN...
  96. Urgent math quick

    A roasted turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 75°F. (a) If the temperature of the turkey is 150°F after half an hour, what is its temperature after 45 min? (Round your answer to the ...
  97. yoyo

    At room temperature, 20° C, water (H2O) is a liquid and oxygen (O2) is a gas. Based on kinetic molecular theory, which answer best explains the states of the two fluids? a The particles in the liquid have greater kinetic energy than the particles in the gas. b The particles ...
  98. physics

    Many of you may have noticed the phenomenon that basketballs get flat if the weather is cold. If a basketball was inflated to a gauge pressure of 60,000 Pa when the temperature outside was 20∘C, what is the gauge pressure inside the basketball in Pa when the ...
  99. physics

    a 200g aluminum container has 500g of water with an initial temperature of 22 degree celsius. The following heated pieces of metal are dropped into water at the same time as follows: 300g piece of aluminum heated at 100 degree celsius; a 50g piece of copper heated at 80 degree...
  100. physics

    a 200g aluminum container has 500g of water with an initial temperature of 22 degree celsius. The following heated pieces of metal are dropped into water at the same time as follows: 300g piece of aluminum heated at 100 degree celsius; a 50g piece of copper heated at 80 degree...
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