1. chemistry

    how do i draw a particle model to describe the reaction between sulphur and iron in detail?
  2. english

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

    At 25C, Kc= 3.7x10^9 for the reaction CO(g) + Cl2(g) equilibrium with COCl2(g) Calculate the Kp at this temperature.
  4. 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?
  5. chemistry

    Predict wheter or not the following reaction will be spontaneous, please explain Br2(l) + Cl2(l) + 29.3 kJ --> 2 BrCl(g)
  6. Chemistry help please!

    In the reaction: n2(g) + 3H2(g) -> 2NH3(g), nitrogen is A. electrolyzed B. synthesized C. oxidized D. reduced e. None of these
  7. Chemistry

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

    why is polystyrene cup use rather than a glass beaker to conduct exothermic or endothermic reaction?
  9. chemistry

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

    What role does a catalyst play in a chemical reaction in terms of rate and yield
  11. 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 :)
  12. Chemistry

    What is the overall order of reaction for the elementary system A+2B=products? a)0 b)1 c)2 d)3 e)5 Can somebody explain this question to me. I don't get it.
  13. 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.
  14. chemistry

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

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

    How many moles of ammonia gas can be produced from the reaction of 3.0L of N2 and 3.0L of H2 according to the following equation: N2(g) + 3H2(g)---> 2NH3(g)?
  17. science

    An equation has carbon dioxide and water as its products, what type of reaction has taken place?
  18. 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)
  19. 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)
  20. chem

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

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

    What is the balanced chemical equation for the reaction used to calculate of delta Hdagrees f of CaCO3(s)?
  23. chemistry

    what are the phases of all the reactants and products in the reaction 2Al + Fe2O3--->2Fe + Al2O3?
  24. Analytical chemistry

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

    Give reasons why the reaction between benzoylchloride and methanol do not attack carbon from the ring
  26. health

    The most serious type of allergic reaction is A. atrial fibrillation. C. anaphylaxis. B. psoriasis. D. lupus. I think it is (c)
  27. chem-carbs

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

    Write the reaction equation for calcium carbide producing ethanoic acid
  29. 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
  30. chemistry

    what happens when a hot empty coke can is put in a icy cold water ? what is the reaction?
  31. help!

    2cr(s) + SnCL4(aq) --> can this reaction occur if so write the balanced equation if it doesnt explain why
  32. 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 .)
  33. chemistry

    Discuss the spontaneity of an electrochemical reaction in terms of its standard emf (E¨¬cell)
  34. kassie

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

    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 BaO (s) is produced?
  36. chemistry

    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)?
  37. 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)?
  38. Chemistry

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

    Please help me!!! Write a balanced chemical equation for oxidation-reduction reaction of fluorene
  40. 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?
  41. Organic Chemistry

    How many grams of 2-propanol are expected from the complete reaction of 111 g of propene?
  42. chemistry

    Calculate the percent yield for an experiment in which 46.9 g of SO3 was produced upon the reaction of 51.2 g of SO2 with 25.0 g O2
  43. chemistry

    Write a net equation for the reaction between aqueous solutions of HBr and NH3.
  44. Chemistry

    What is the equilibrium constant for the reaction: HCOOH(aq)+ OH (aq) <--> HCOO(aq)+ H2O(l) Ka= 1.7 * 10^-4 Kb for the conjugate base= 4.9 * 10^-11 Thank you!
  45. Chemistry

    Balance the reaction step-wise: As2S3(s) + NO3^- + H^+(aq) to AsO4(aq) + S(s) + NO(g) + H2O(l)
  46. chemistry

    Write a net equation for the reaction between aqueous solutions of NaHSO4 and NaCN.
  47. chm

    What is the theoretical yield of iron if we begin the reaction with 10.5g of AL (assume an excess of Fe2)3)
  48. 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)
  49. science

    What actually happens if we mix the chloroform with hexane? what is the exact reaction between them & is the resulting product ia stable?
  50. chemistry

    Write the equilibrium constant expression for the reaction 2 NO (g) + Br2 (g) ↔ 2 NOBr (g)
  51. 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?
  52. chemistry

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

    Write a net equation for the reaction between aqueous solutions of HClO4 and NaH2PO4.
  54. Science

    If you began with 36 grams of water how many hydrogen and oxygen can you produce in a decomposition reaction
  55. chemistry

    is there a chemical reaction that is used in everyday life that can go wrong? like lets say you add too much or one of the chemicals
  56. Chemistry

    total ionic equation for the reaction between hydrochloric acid and potassium hydroxide?KI(aq)A. K+ + I- B. K2+ + I2- C. K+(aq) + I-(aq) D. K2+(aq) + I2-(aq)
  57. 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?
  58. SCIENCE

    How does temperature change during a chemical reaction. (Note: it has to be a Endothermic and exothermic reactions) Thanks
  59. 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?
  60. Chemistry

    need help balancing the following. redox reaction in acidic solution. Clo3-+Cl->>Cl2+ClO2
  61. Inorganic Chemistry

    what is the product of reaction K3(Al(C2O4)3).3H2O with KMnO4 in the present of NaOH?
  62. chemistry

    Where can I find the reaction that produces ethyl formate, which is Methanol and Methanoic acid?
  63. 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)
  64. chemisty

    what type of reaction occurs when potassium metal reacts with fluorine gas?
  65. 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?
  66. chemistry

    Write a net equation for the reaction between aqueous solutions of NH4Cl and Na2SO3.
  67. chemistry

    Write a net equation for the reaction between aqueous solutions of NaNO2 and NaH2PO4.
  68. COM 155

    What would be the reaction of a reader if the topic sentences in an essay did not coincide with the supporting points?
  69. 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 ________.
  70. College Chemistry

    The eqm. Constant for a reaction is 2.48 at 25°C. what is the value of ΔG° (kJ) at this temperature? (R=8.314 J/k mol)
  71. College Chemistry

    The eqm. Constant for a reaction is 2.48 at 25°C. what is the value of ΔG° (kJ) at this temperature? (R=8.314 J/k mol)
  72. Chemistry

    For the following battery: Cd(s) | CdCl2(aq) || Cl–(aq) | Cl2(l) | C(s) Write the reduction half reaction for the C(s) electrode.
  73. College Chemistry

    The eqm. Constant for a reaction is 2.48 at 25°C. what is the value of ΔG° (kJ) at this temperature? (R=8.314 J/k mol)
  74. chemistry

    write a balanced chemical reaction representing the combustion of hexane? C6H14
  75. chemistry

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

    write a balanced equation for the reaction between sulfuric acid and calcium metal
  77. Chemistry

    How many moles of CaCl2 are produced when this reaction is started with 4.70 grams of chlorine gas?
  78. 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...?
  79. chemistry

    Write a balanced equation for the reaction between perchloric acid and lithium carbonate.
  80. chemistry

    Predict the products of the chemical reaction aluminum + iron(III) oxide
  81. A & P

    how is blood clotting, immune response, allergic reaction and hormone release interrelated?
  82. Science

    Why do all salts crystals have a distinctive cubic shape? And what happens to these atoms during this chemical reaction?
  83. Chemistry - Le Chateli.

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

    The equilibrium constant for the following reaction is 7.2 x 10-10. What is the [H+] in a solution 1.0 M of this acid? HCN + H2O --> H3O+ + CN-
  85. chemistry

    identify the type of reaction that occurs between potassium carbonate and nitric acid
  86. Chemistry

    Calculate the value (calories) for the heat of solution. Mass of NaOH: 2.03 g ΔT for reaction A : 8 °C
  87. chemistry

    Write a balanced equation for the reaction of liquid bromine with chlorine gas.
  88. Chemistry 30

    Calculate the delta H for the reaction : 2H3BO3(aq) reacts with B2O3(solid) + 3H2O
  89. Chemistry

    is this statement true chemicals participating in a chemical reaction contain only potential energy?
  90. 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 ________.
  91. 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?
  92. chemistry

    type of chemical reaction equation H3PO4+KOH=K3PO4+H2O
  93. Chemistry

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

    how to make and balance steps of reaction oF hno3 and cu by partial equation method
  95. Chemistry

    Is "a color of solution becoming less intense due to dilution" maybe evidence of chemical reaction or not?
  96. Chemistry

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

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

    Considering the reaction i2 h2=2hi energy change =( tive) and give reasons how "HI" will be produced
  99. chemistry

    __NH3(g) + __ O2(g) → __ N2(g) + __ H2O(g) When the reaction above is completely balanced, the coefficient for NH3 will be (a) 2. (b) 3. (c) 4. (d) 6.
  100. chemistry

    In the reaction 2SO2 (g) + O2 (g) 2SO3 (g), which change would cause the greatest increase in the concentration of SO3?