1. chem

    What does it mean when the sulfuric acid in a chemical reaction is written ABOVE the arrow?
  2. Chemistry

    How do I balance the following into an equation? 10 mL of 2.0 M HCl is react with 8 mL of 1.7 M Ca(OH)2 in a neutralization reaction.
  3. Chemistry

    what type of reaction occurs in Al+SnCl4 ? and what is the balanced equation
  4. biology

    does dark reaction helps in transmittance and conservation of energy

  6. Chem4

    For the reaction A + 1/2 B --> 2 C, when C is increasing at a rate of 0.018 M/s, how fast is B decreasing?
  7. chem

    what mass of Cl2 is produced from the reaction of 665 g of Hal
  8. Chemistry

    Why does sulfric acid make the electrolysis reaction of H2 and O2 go more rapidly?
  9. ap chem

    What volume of 5M HF will 4g Ca react completely according to the reaction Ca+2HF-->O+CaF2+H2
  10. Organic Chemistry

    The following reaction would produce a(n) __________. R-OH + R'COOH →
  11. chemistry

    how can AgCl(s) be dissolved completely? write an equation for the reaction
  12. chemistry

    Write the expression for Kc and Kp for the reaction PH3BCl3(s) <==> PH3(g) + BCl3(g)
  13. Chemistry

    In the. Reaction (Na2co3+CaCl2-->2NaCl+caco3) The precipitate is :
  14. Chemistry help

    Why is it important for the reaction beaker to be completely dry before weighing?
  15. chemistry

    equation of the reaction of hydrochloric acid and iron sulphide
  16. science

    How far does your automobile travel in meters during your reaction time if you are moving at 55 mi/h (25 m/s)?
  17. chemistry

    what mass of H2(g) is produced from the reaction of 5.2g Fe(s) with excess hydrochloric acid?
  18. Chemistry

    How much reaction is complete when Kc=1, options: a.10% b.25% c.50% d.100% please explain the answer
  19. chem 2

    calculate kc for reaction I2 (g)+Cl2 (g)⇌2ICl(g )Kp=81.9 (at 298 K)

    How many oxidation states Should a substance have at least to undergo Disproportionation reaction ? thanks
  21. chem

    Determine the equilibrium constant for the following reaction. 2 Fe3+(aq) + H2(g) 2 Fe2+(aq) + 2 H+(aq)
  22. Chemistry

    How many grams of Ni(OH)2 are produced from the reaction of 45.0mL of 1.75 M NaOH solution?
  23. English

    Contrat the reaction of Hamlet, Laertes to their father's death.
  24. chemistry again

    how do you find the concentration of an ion remaining after a reaction is complete???
  25. chemistry

    The "REVERSIBLE" chemical reaction- A + B <--> C + D Kc = CD / AB =4.4 Concentration at the start and after equilibrium- A = 1.00 M --> (1.00 - X) M B = 2.00 M --> (2.00 - X) M C = 0.00 M --> X M D = 0.00 M --> X M 4.4 = X^2 /
  26. Science

    Write a mechanism for the aldol reaction of 3,3-dimethyl-2-butanone.
  27. Chemistry

    Here is a chemical reaction Fe + O2--> Fe2+O3 what was Antonie Lavoiser rusting?
  28. chemistry

    Determine the delta H for the following reaction C3H4(g) + 2H2(g) --> C3H8(g)
  29. chemistry

    I need the half reactions for this redox reaction: 2KClO3-----> 2KCl + 3 O2
  30. chemistry

    C+HNO3=H2CO3+H2O+NO2 which type of reaction is it.
  31. 1st grade

    please help me with easy comments about sulpur and iron reaction
  32. Chemistry

    what is the equation for the reaction of Cu(NH3)subscript2(SO4) with NaOH?
  33. science

    when a liquid wax is turned into a solid is it a chemical reaction?
  34. chem

    is An antacid neutralizes stomach acid. a chemical reaction?
  35. chemistry

    How to prove that sodium hydroxide is a base with the help of an equation for the reaction
  36. Chemistry

    Calculate delta G of a reaction with equilibrium constant, K= 9.5 x 10^5 at 25 degrees C
  37. Science

    Reaction between potassium dichromate and sulphir dioxide gas?
  38. chemistry

    write a balanced equation for the chain reaction AL2O3
  39. Chemistry

    Calculate the amount of H2 produced from the reaction of 4.25 grams Zn and 25 ml of 3.0 M HCL.
  40. Chemistry

    The chemical equation for ionic reaction between Na2S and AgNO3??
  41. Chemistry help pls

  42. Chemistry

    For the reaction Zn(OH)2(s)+4CN-(aq)->Zn(CN)4 2-(aq)+2OH-(aq) find [CN-] when 8.5 g of Zn(OH)2 are dissolved in 1.00 L of solution.
  43. Chemistry

    Calculate the amount of H2 produced from the reaction of 4.25 grams Zn and 25 ml of 3.0 M HCL.
  44. Science

    Reaction between potassium dichromate and sulphur dioxide gas??
  45. science

    Is an icing propane regulator concidered an endothermic reaction?
  46. wvuit

    calculate the enthalpy change for the reaction n2h4(l) + 02(g) --> n2(g) + 2h20(l)
  47. Psychology

    How could having a Type A personality affect a person’s reaction to stress?
  48. chemistry

    Consider the reaction, 4 NH3 + 5 O2 => 4 NO + 6 H2O How many grams of NO will be made from 10.7 moles of O2?
  49. Chemistry

    Will there be a reaction if a magnesium strip is placed in a solution containing Zn2+ ions?
  50. Science

    In the reaction X+Y (R) Z, Z is the A)Substrate B)Product C)Enzyme D)Carbon Molecule
  51. chemistry

    what type of reaction is 2KCLO3+heat-2KCL+3O2
  52. college chemistry

    How many grams of Mg(OH)2 can be prepared from the reaction of 20.0g of Mg3N2 with 10.0g of H2O?
  53. chemistry

    For the reaction: 2SO2(g) + O2(g) = 2SO3(g) conducted at 25°C and 1 atm. Calculate H°, S°, G°
  54. science

    Name the type of reaction that the equation represents? 2Cu + O2 -------> 2CuO
  55. chemistry

    what is the source of activation energy in an exothermic reaction? Is an example heat?
  56. chemistry

    How to solve CoCl2+HO2- ------> Co(OH)3+ Cl- by half reaction method
  57. science

    In the reaction X+Y (R) Z, Z is the A)Substrate B)Product C)Enzyme D)Carbon Molecule
  58. science

    what substance is being reduced in the following redox reaction? HgCl2 + Sn^2 = Sn^4 + Hg2Cl2 + Cl-
  59. Science

    In the reaction X+Y (R) Z, Z is the A)Substrate B)Product C)Enzyme D)Carbon Molecule
  60. electrochemistry gr 12

    Will there be a reaction is a magnesium strip is placed in a solution containing Ca2+ ions?
  61. Chemistry

    how many electrons take part in redox reaction: Cl2 -> ClO3^-
  62. bio

    How is the oxygen production in 30 seconds related to the rate of the reaction?
  63. Chemistry

    What is the oxidized substance in the following reaction? Fe + 2HCl → FeCl2 + H2
  64. physics

    Complete the following nuclear reaction: ^16,v8 O + ^4, v2 He → ________ + ^19, v10 Ne 1p 1n 2H 3H
  65. Chemistry

    For a certain reaction, Kp = 3.54 at 325 C. Find delta G 598 K in kJ/mol.
  66. Chemistry

    Write the equation for the reaction of mixing 2 ml of 3 M (HO)2SO2 with 9 ml of 0.2 M NaClO4
  67. chemastrey

    of exhow many grams of no2 can be produced by the reaction of excess o2 with 19.8 of no
  68. chemistry

    1. In the reaction 2Ca(s) + O2(g) → 2CaO(s), which species is oxidized?
  69. Chemistry

    Name the organic product of the following nucleophilic substitution reaction. OH+CH3CH2I
  70. chemistry

    What is the equation that represents the reaction of esterification of crystal violet? Thanks
  71. Chemistry

    what type of reaction is AgF + CaCl2 --> AgCL + CaF2 ?
  72. chemistry

    write the equation for the reaction of mixing 4 ml of 3 M (ho)2so2 with 7 ml of 0.2 M naclo4
  73. biology

    how is it possible for an enzyne to lower the required energy of activation for a reaction.
  74. science

    The rate constants for a first order decay reaction are found to be:
  75. chemistry

    why is the head temperature kept below 90 c in the initial step of the dehydration reaction?
  76. Social Studies

    Describe the Stamp Act and the colonists’ reaction to it.

  78. Chemistry

    What does the reaction of alkaline earth metals with water tell you? Thanks in advance.
  79. Chemistry

    The half life for a first order reaction is know to be 4.5 h. How long will it take for 85% to be decomposed, in h?
  80. College Chemistry

    Quick Question - For a spontaneous reaction, ΔS°>0 and K >1. Is this always?

    What will be the reaction rate (formation of C) when the concentrations of A & B are 0.150 M and 0.250 M respectively?
  82. biology

    Describe the to type of energy changes that can occur in a chemical reaction Thanks
  83. Physics

    What is the energy released in the fusion reaction: 2H+2H--> 4He + Q? How do I calculate this?
  84. chemestry

    given 43 moles of KCl how much HNO3 is needed to complet the reaction
  85. Huck fin

    If you have read Huckleberry Finn before, what was your initial reaction to it?
  86. Chemistry

    A certain first-order reaction has a rate constant of 2.60×10−2 s-1 at 18 C. What is the value of k at 55 C if Ea = 90.0 kj/mol?
  87. Organic Chemistry

    The reaction of (Z)-butenedioic acid with 1,3-cyclopentadiene gives only one product. Why?
  88. chemistry

    how does an increase in pressure affect the following reaction? C2H2(g)+H2(g) C2H4(g)
  89. chemestry

    consider the reaction 2N2O(g) == O2(g)+2N2(g).which of the following will cause a shift in the equilibrium to the left?
  90. chemistry

    Kp for the reaction is 1.47 at 727°S CO2(g) + C(s) 2CO(g) Calculate Kc at this temperature
  91. Chemistry

    What is the theoretical yield of PI3 from the reaction of 27.0 g of P and 68.0 g I2? 2P(s)+3I2(s) 2PI3(s)
  92. Chem

    At a particular temperature, Kc = 54 for the reaction H2(g) + I2 (g) <=> 2 HI(g). One mole of HI is placed in a 3.0-L container. What would be the equilibrium concentration of HI?
  93. Chemistry

    Write the Kc expression for the following reaction: Fe3+ + SCN- = FeSCN2+
  94. science

    writing balanced chemical reaction of K2CO3 (s) with HCl (aq)??
  95. chemistry

    When 24.2 kg of Fe2O3 react with 14.5 kg of CO and 5.4 kg of Fe are recovered, what is the percent yield for the reaction?
  96. chemistry

    Account for the increase in reaction rate brought about by a catalyst.
  97. AP Chemistry

    What effect would a catalyst have on the rate of reaction for the decomposition of ozone?
  98. Chemistry

    Classify each reaction and balance the equations. Al(OH)3 ==> Al2O3 + H2O
  99. Chemistry

    Writing balanced chemical reaction of K2CO3 (s) and HCl (aq) ???
  100. english

    In "A Day's Wait," how can the father's reaction to his son's concern best be described?