1. chemistry

    consider the following reaction: Mg(s)+ 2HCl(aq) --> MgCl2 (aq)+H2 (g) What minimum amount of 1.75 M HCl is necessary to produce 27.5 L of H2 at STP?
  2. chemistry

    Calculate ΔGo (in J) for 2 moles of electron(s) in each half-reaction and a standard potential of 0.44 V
  3. chemistry

    Write a net equation for the reaction between aqueous solutions of Na2HPO4 and H2CO3.
  4. chemistry

    Write a net equation for the reaction between aqueous solutions of HClO4 and NaH2PO4.
  5. chemistry

    Write a net equation for the reaction between aqueous solutions of NaC2H3O2 and H3PO4.
  6. chemistry

    Write a net equation for the reaction between aqueous solutions of NaHSO4 and NaCN.
  7. chemistry

    Write a net equation for the reaction between aqueous solutions of HBr and NH3.
  8. chemistry

    Write a net equation for the reaction between aqueous solutions of NaNO2 and NaH2PO4.
  9. chemistry

    Write a net equation for the reaction between aqueous solutions of NH4Cl and Na2SO3.
  10. CHEMISTRYYY

    consider the following reaction: Mg(s)+ 2HCl(aq) --> MgCl2 (aq)+H2 (g) What minimum amount of 1.75 M HCl is necessary to produce 27.5 L of H2 at STP?
  11. chemistry

    The reaction SO2 + 1/2O2 -->SO3 has kp equal to 6.55 at 627C. what is the value of kc at this temperature? how do you set this up?
  12. chemistry

    Write a balanced chemical equation for the overall cell reaction represented as: a) Ag(s)|Ag^+(aq)||Sn^4+(aq), Sn^2+(aq)|Pt(s) b) Al(s)|Al^3+(aq)||Cu^2+(aq)|Cu(s) c) Pt(s)|Fe^2+(aq), Fe^3+(aq)||MnO4^-(aq),Mn^2+(aq)|Pt(s)
  13. science

    For the reaction 2Na(s) + Cl(g) ¨2NaCl(s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl (at STP)?
  14. Chemistry

    I need to understand, which has more effect in inducing the reaction of silver salts. Intensity or wavelength?
  15. Chemistry

    The reaction rate triples when the temperature increases from 15 to 35 degree C. What is the activation energy?
  16. Chemistry

    Write the equilibrium constant expression for the reaction: 2NO +2H2 =N2+2H2O Kc=?
  17. kassie

    What is the major product of the reaction between methanol and (2R,3S)-2-bromo-3-methylpentane at room temperature?
  18. chemistry

    If you submerge a silver teaspoon in copper sulfate solution, what reaction would you expect and why?
  19. chemisty

    what type of reaction occurs when potassium metal reacts with fluorine gas?
  20. chemistry

    Raising the temperature of a reacting system increases the rate of the reaction, but does NOT increase the:
  21. science

    Is this hypothesis in the right format?. When yeast and vinegar are put together, they will form an endothermic reaction.
  22. Chemistry--help me, please

    how would you separate Fe3+ from Ba2+ in a mixture? Please explain and give an equation for reaction.
  23. english

    what would be the reaction of a reader if the topic sentences in an essay did not coincide with the supporting points?
  24. 7th grade chemistry

    how is potassium sulfate prepared?explain with chemical reaction.
  25. Chemistry

    Write an equation for the reaction that takes place when LiOH is added to water.
  26. Chemistry

    in the reaction: Cl2 + 2HBr ----> 2HCl + Br2 identify the reduced specie
  27. chemistry

    Complete and balance this reaction: sulfuric acid reacts with barium chloride
  28. Chemistry

    Enter the Net Ionic Equation including phases, for the reaction of AgNO3 and Ba(OH)2.
  29. Chemistry

    determine the redox reaction represented by the following cell notation Mg Mg2 Cu2 Cu
  30. Chemistry

    What role does a catalyst play in a chemical reaction in terms of rate and yield
  31. chemistry

    suggest an alternative indicator for the standardization reaction. Explain the rationale behind your choice.
  32. Chemistry

    write the reaction equation for the formation of CN2H2 (s) from the elements in their standard state.
  33. physics

    Write down the unit in which reaction rate is measured in this observation? Equation is Zn(s)+I~ZnI
  34. Health

    The most serious type of allergic reaction? a.atrial fibrillation b.psoriasis c.anaphylaxis d.lupus
  35. inorganic chemistry

    what is the product of reaction dehydrated K3(Al(C2O4)3) with KMnO4 in the present of KOH?
  36. Chemistry

    Separate this redox reaction into its component half-reactions. O2 + 2Mg----> 2MgO
  37. chemistry

    what is the balanced equation for the reaction that takes place between bromine and sodium iodide
  38. Chemistry

    How do i balance the oxidation-recution reaction Al(s)+MnO4(aq)-->MnO2(s)+Al(OH)4(aq) if it is in a basic solution?
  39. Chemistry

    What is the balanced equation for the reaction including states? Does it form a precipitate? Cu(NO3)2 + KI
  40. Chemistry

    What would be the products of this chemical reaction?? Co(NO3)2 (aq) + NH3 (aq) = ?????? a precipitate is supposed to be formed.
  41. Chemistry

    Calculate the standard potential, E^o, for this reaction from its equilibrium constant at 298K. X(s)+Y^2+(aq)= X^2+(aq)+Y(s) K=8.68E6 E^o=??V
  42. chm

    What is the theoretical yield of iron if we begin the reaction with 10.5g of AL (assume an excess of Fe2)3)
  43. chem-carbs

    D-ribose is treated with a mild oxidizing agent. What is the product of this reaction?
  44. chem

    Explain clearly why changes in base concentration do not affect the observed reaction rate of an E1 elimination.
  45. Chemistry

    The combustion of 1 mole of CO according to the reaction CO(g) + ½O2(g) → CO2(g) + 67.6 kcal gives off how much heat?
  46. chemistry

    Separate this redox reaction into its component half-reactions. O2 + 2Zn -->2ZnO
  47. AP Chem

    How many mL of 3.84 M HCL are required to consume 4.12g of Zinc in the following reaction? Zn(s) + 2HCL(aq)----> ZnCl2(aq) + H2(g)
  48. Chemistry

    Use the 1/2 reaction method to balance the equation below in acidic solution. Cl2 (g) + I- (aq) = Cl- (aq) + IO3- (aq)
  49. chemistry

    When hydrochloric acid is mixed with magnesium and a flame is put in the tube what causes a reaction?
  50. science

    Calculate the energy released when 1 gram of uranium undergoes fission reaction
  51. Chemistry

    For the galvanic cell that uses the reaction 2 Al(s) + 3 Ni2+(aq) → 2 Al3+(aq) + 3 Ni(s) the value of n in the relationship ΔG° = -nFE° is ________.
  52. Chemistry

    At what temperature will the rate constant for the reaction have the value 6.5×10−3 M/s? (Assume k = 5.4 * 10^-4 M/s-1 at 599K and k = 2.8 * 10^-2 M/s at 683K .)
  53. chemistry

    write a balanced chemical reaction representing the combustion of hexane? C6H14
  54. Science

    2Na(s) + 2H2O(aq) = 2NaOH (aq) + H2 (g) Is this reaction exothermic or endothermic? I don't understand ,
  55. Science

    Why is the formation of iron hydroxide, Fe(OH)2, from Fe2+ and OH- not considered an oxidation-reduction reaction?
  56. Chemistry

    For the following reaction, identify the substance being oxidized and reduced CH4 + 2 O2 = CO2 + 2 H2O
  57. Chemistry

    how many joules and calories are produced from the reaction CaCl2+H2O=HCl+CaOH
  58. chemistry

    Balance the following redox reaction by inserting the appropriate coefficients. H^+ +CrO4^2- +NO 2^- =Cr^3+ +H2O+NO3^-
  59. Chemistry

    Balance the following redox reaction in basic solution. H2(g)+Fe3+(aq) ---> H2O(l)+Fe2+(aq)
  60. science

    Calculate the % yeild of the reaction if 64 g of NaBH4 with iodine produces 15_g of BI3
  61. chemistry

    Where can I find the reaction that produces ethyl formate, which is Methanol and Methanoic acid?
  62. Analytical chemistry

    What is the reaction & calculation when KIO3 mixed with KI, HCl by titration with Na2S2O3?
  63. chemistry

    Suggest a type of reaction and the conditions required to breakdown polyamides into their monomers.
  64. chemistry

    At 25C, Kc= 3.7x10^9 for the reaction CO(g) + Cl2(g) equilibrium with COCl2(g) Calculate the Kp at this temperature.
  65. chemistry

    Write the reaction equation for calcium carbide producing ethanoic acid
  66. chemistry

    how many grams of Na2SO4 can be produced by the reaction of 250g of NaOH with sufficient H2SO4?
  67. Chemistry

    need help balancing the following. redox reaction in acidic solution. Clo3-+Cl->>Cl2+ClO2
  68. chemistry

    how many grams of Zn metal would you use to prepare 6.8g of zinc chloride according the reaction: Zn(s)+2HCl(aq)-> ZnCl2(aq)+H2(g)
  69. chemistry

    Suggest a type of reaction and the conditions required to breakdown polyamides into their monomers.
  70. chemistry

    What is the net ionic equation for the reaction Copper (II) chloride and sodium hydroxide?
  71. chemistry

    what happens when a hot empty coke can is put in a icy cold water ? what is the reaction?
  72. Chemistry

    If the half life of a reaction A is 2 mins,how long will it take A to reach 25% of its initial concentration ?
  73. Chemistry

    Write the balance equation and the reaction type when magnesium is added to HCl
  74. Chemistry

    Suppose that 30 mL of 0.5 M CsOH and 55 mL of 0.1 M NaHS are mixed. What is the K for the dominant equilibrium in terms of Ka's, Kb's, Kw etc.? Ka of HS- 1/Ka of HS- Kb of OH- 1/Kb of OH- Kb of S-2 1/Kb of S-2 Kw 1/Kw There is no reaction.
  75. chemistry

    Predict wheter or not the following reaction will be spontaneous, please explain Br2(l) + Cl2(l) + 29.3 kJ --> 2 BrCl(g)
  76. chemiste-ry

    Consider the following equation: CO + 2 H 2 → CH 3 OH △H rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H 2 .
  77. chemistry

    Calculate the mass of water produced from the reaction of 24.0 g of H2 and 160.0 g of O2. What is the limiting reagent?
  78. Biology

    How can you explain that Biurets reaction with amino acids as compared to other protein substances?
  79. chemistry

    Suggest a type of reaction and the conditions required to breakdown polyamides into their monomers.
  80. communcation

    what do you think would be the reaction of a reader if the topic sentences in an essay did not align with the supporting points
  81. Chemistry

    What is the reducing agent in the following reaction? 2NA + 2H2O 2NaOH + H2 A.Na B.H2O C.NaOH D.H2 I think it is B...?
  82. Chem

    if 15 g of nitrogen reacts with 15 g of hydrogen, 10.5 g of ammonia is produced. what is the percent yeild of this reaction?
  83. Chem 1

    Use oxidation states to identify the element that is being oxidized in the following redox reaction: Cu(s)+2 H 2 S O 4 (aq) → CuS O 4 (aq)+S O 2 (g)+2 H 2 O(l)
  84. chemistry

    Suggest a type of reaction and the conditions required to breakdown polyamides into their monomers.
  85. Chemistry

    what is the concentration of I- before the reaction when 35 ml of 0.23M KI is mixed with 15 ml of 0.15M Fe3+ 2I- + 2Fe3+ --> 2Fe2+ + I2
  86. Chemistry

    how much energy is released during the reaction of 2.5l diboron hexahydride with 5.65l chlorine gas?
  87. chemistry

    How many grams of Cu(OH)2 can be produced from the reaction of 0.500g Cu with 30.0 mL of 3.0M NaOH? Which reactant is the limiting reagent?
  88. Chemistry

    For the reaction H2(g) + I2(g) ⇀↽ 2 HI(g) at 425◦C, calculate [HI], given [H2] = [I2] = 0.000617 mol/L and K = 54.3.
  89. Chemistry

    given: 25.9 kJ + 1/2 H2 + 1/2 I2 => HI how much energy is needed for the reaction of 4.57x10^24 molecules of iodine, I2, with excess hydrogen, H2?
  90. Chemistry

    How many grams of calcium carbonate are consumed per 500 g of sulfur (IV) oxide? in what reaction?
  91. chemistry

    What is Delta H rxn for the following chemical reaction? H2O(l) + CCl4(l)-> COCl2(g) + 2HCl(g)
  92. Chemistry

    Net ionic equation for the reaction of strontium nitrate and sodium carbonate.
  93. chemistry

    Write the equilibrium constant expression for the reaction 2 NO (g) + Br2 (g) ↔ 2 NOBr (g)
  94. chemistry

    how do i draw a particle model to describe the reaction between sulphur and iron in detail?
  95. Chemistry - Le Chateli.

    3Fe(s) + 4H2O(g) <-> Fe3O4(s) + 4H2(g) What happens when Fe(s) is added? Would the reaction shift right?
  96. physics

    using newtons third law explain what is meant by action and reaction pairs of forcess
  97. Chemistry

    What type of reaction occurs between zinc and Acetic acid? I think it is double replacement but I am not sure. Thank for the help :)
  98. chemistry

    What do you think causes the formation of color in the test tube during the reaction between copper and nitric acid?
  99. homeschool

    What are the products of the double-replacement reaction between potassium chloride and silver acetate?
  100. chemistry

    Why doesn't the hydrogen produced in the Lithium/water reaction catch fire?
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