1. science

    you plan to measure the thermal energy released durning a chemical reaction what tool would you use
  2. chemsitry

    Calculate the work in kilojoules done during a reaction in which the volume expands from 10.0 L to 95.9 L against an external pressure of 2.5 atm.
  3. Chemistry

    Write the net ionic equation for the following reaction : Na3SO4(aq) + Ba(NO3)2(aq) —> BaSO4 (s) + 2 NaNO3(aq)
  4. CHEMISTRY

    Write the net ionic equation for the reaction between potassium hydroxide and copper(I) nitrate.
  5. chemistry

    How to balance simple oxidation-reduction reactions by the half-reaction method. Mg (s) + N2 (g)= Mg3N2 (s)
  6. Chemistry

    How can reaction intermediates in an organic synthesis be separated and recovered using thin layer chromatography?
  7. chemistry

    5. Identify whether the following reaction is an oxidation or a reduction. a. Ni2+ + 2e- ¨ Ni b. 2Br- ¨ Br2 + 2e- c. O2 + 4e- ¨ 2O2- d. Zn ¨ 2e- + Zn2+ e. H2 ¨ 2H+ + 2e-
  8. chem

    Please calculate the energy involved in the following chemical reaction, given the values below: 2Ag + H2S --> Ag2S + H2 -24 -33
  9. Chemistry

    Identify the Bronsted-Lowry acid in the following reaction. H2O (l) + HCO31- (aq) → H3O+ (aq) + CO32- (aq)
  10. AP Chemistry

    For each of the following pairs of half-cells, determine the overall electrochemical reaction that proceeds spontaneously. Na+ | Na, Ni2+ | Ni
  11. science

    co2 +H2o=c6H12o6+6H2o+6O2 in this reaction what is the reoxidation number of glucose
  12. chemistry

    Calculate the number of grams of acetic acid present in the mixture after the reaction is complete.
  13. chem

    Please calculate the energy involved in the following chemical reaction, given the values below: 2Ag + H2S --> Ag2S + H2 -24 -33
  14. Chemistry

    Write 3–4 sentences to describe how coupling reactions are used to drive an unfavorable chemical reaction
  15. chemistry

    What is the ∆G for the following reaction between O3 and O2? 3O2(g) 2O3(g) Given: O3: ∆H = 285.4 kJ ∆S = -137.14 J/K) 109.5 kJ 208.3 kJ 300.2 kJ 326.3 kJ
  16. chemistry

    how will you recognize that a singe replace reaction has occured when you combine an active metal with 6M HCI
  17. Organic chemistry

    What kind of reaction is occurring between potassium permanganate and cyclohexene? (I.e. Combination, double displacement, etc.
  18. chemistry

    Please tell me any website....where I can find details of the experiment Reaction of 4-aminotoluene and o-vanillin(for preparation of azomethine)
  19. chemistry

    Which direction would equilibrium shift in the reaction N2 + 3H2 2NH2 + 22,000 cal if it is cooled?
  20. Chemistry

    The solubility product for Ni(OH)2(s) is 1.6 ✕ 10−16. Calculate the value of ℰ° for the following half-reaction. Ni(OH)2 + 2 e− → Ni + 2 OH − I have no idea what equation to use or how to solve this problem
  21. science

    How many moles S are required to prepare 800 liters of SO2 gas in a synthesis reaction?
  22. Organic

    Balanced reaction for cyclohexene to adipic acid. Used na2wo4 with h2o2, PTC, and khso4.
  23. Chemistry

    What volume of nitrogen dioxide (in L) is produced from the complete reaction of 16.87 of lead (ii) nitrate at STP
  24. chemistry

    Determine the entropy change for the following displacement reaction Cl2(g) + PbBr2(aq) --> PbCl2(aq) + Br2(l
  25. science

    I'm doing an assignment on burning magnesium and one of the questions is explain the reaction using the Big Idea of Energy. What does this mean?
  26. chemistry

    Examine the unbalanced electrolytic reaction. Li+(aq) + Zn(s) → Li(s) + Zn2+(aq) How many electrons are transferred in the balanced equation? 4 1 2 3
  27. chemistry

    CaCl2(aq) + 2NaHCO3(aq) = CO2(g) + CaCO3(aq) + 2NaCl(aq) + H2O(l) what kind of chemical reaction is this? Please help me
  28. chemistry

    write the equilibrium constant expression for each reaction a.) NH3(g)+ CIF3(g)->
  29. chemistry

    calculate the initial rate of reaction when a reactor is charged with so2cl2 at conc. of 0.22 mol/l.
  30. chemistry

    Consider the following equation: CO + 2 H2 → CH3OH △H rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2
  31. AP 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
  32. science

    The rate constant of a certain reaction is given by log K= 212/T Calculate the activation energy at 400K.
  33. Organic Chemistry Lab

    Give all the products that you would expect by reaction of 2-bromo-3,4-dimethylbutane with methanol. Explain your answer. Thank you
  34. Chem

    Enter the net ionic equation, including phases, for the reaction of AgNO3(aq) and KCl(aq).
  35. chemistry

    balance the equation and name the reaction taking place C3H5OH+O2 equals CO2+ H2O
  36. Chemistry

    For a given sample of CH3OH, the enthalpy change on reaction is 17.0 kj. How many grams of hydrogen gas are produced?
  37. chemistry

    at some temperature, Keq=33 for the reaction H2 + I2 -> 2HI. If initially, [H2]= .0600 M and [I2]= .0300 M, what are all three equilibrium concentrations?
  38. Chemistry

    Write the balanced molecular equation for the reaction between lithium phosphate and calcium nitrate.
  39. Chemistry

    A Balanced equation to represent the reaction between 1-pentanol and ethanoic acid. (Production of an ester)
  40. Chemistry Help

    Write the net ionic equation for the reaction of calcium nitrate and sodium phosphate
  41. CHM

    suggest an alternative indicator for the standardization reaction. Explain the rationale behind your choice. Used 10 g of KHP
  42. Chemistry

    a solution of 25 ml of HCL is neutralized by 42.5 ml of 0.10 M concentration of NaOH.Need to write a balanced equation for the reaction
  43. Chemistry

    In the reaction,C2H4(g) + 3O2(g) =2H2O(g) + 2CO2(g),what is the complete combustion of 12.5cm3 of ethene
  44. Chemistry

    For a reaction: AB arrow A+B, rate=k[AB]^2and k=0.2L/mol.s a)how long it will take for [AB] to reach its initial concentration of 1.5M
  45. Chemistry

    At some temperature, Keq = 33 for the reaction H2 + I2 „³ 2HI. If initially, [H2] = .0600 M and [I2] = .0300 M, what are all three equilibrium concentrations?
  46. Chemistry 2

    Durango redox reaction the oxidation number of species Will decretase, increpase or stay the same
  47. Science

    I'm doing an assignment and one of the questions is explain the reaction using the Big Idea of Energy. I don't know how to answer it please help!
  48. Chem 2

    Using the reaction HB H+ + B- and the Ka for that expression, calculate the Ka given the initial concentration of weak acid to be 0.150 M and the pH of the solution to be 2.79.
  49. Chemistry

    Calculate enthalpy of the reaction ethene+hydrogen gives ethane are -1410KJ,-286kJ and -1560KJ respectively at 25°c
  50. Chemisty

    Calculate the standard enthalpy change for the following reaction at 25 °C. MgCl2(s)+H2O(l)-->MgO(s)+2HCl
  51. chemistry

    What volume of chlorine gas at 42.0 oC and 1.30 atm is required to react completely with 34.2 g of phosphorus (P4) according to the following reaction?
  52. Chemistry

    If a reaction yields 2.5165 × 10^8 kJ, then how much mass was lost? (User 3.00 x 108 m/s as the speed of light) 2.30 × 10^-3 kg 5.60 × 10^-3 kg 2.80 × 10^-12 kg 5.60 × 10^-12 kg Please help.
  53. Chemistry

    what volume of oxygen is needed to react to complete reaction and to form 5cm of so3?
  54. Chemistry

    Calclte the number of moles of ethane needed to produce 10.0 grams of water according to the following reaction.
  55. chemistry

    What is the mole ratio between all compounds of this reaction:HC2H3O2 + NaHCO3 = NaC2H3O2 + H2O + CO2
  56. chem

    Calculate the number of kJ released for the reaction shown below, if you begin with 52 grams of fluorine (F2), and the ΔH = -542 kJ. H2(g) + F2(g) → 2 HF(g)
  57. Chemistry

    Complete and balance the following equation. If no reaction occurs, write noreaction . NaOH(aq)+FeBr3(aq)→
  58. Chemistry

    How many grams of H2O are needed if 41.85g of O2 are to be produced from the reaction below? 2K2O2 + 2H2O = 4KOH + O2
  59. english10

    How does Kent’s reaction to Lear’s banishment of Cordelia introduce the theme of sight and insight?
  60. chemestry

    PLEASE,COULD ANYONE HELP ME to balance this redox reaction : Cr2S3 PbO2 + H2SO4 + -------> PbSO4 H2Cr2O7+H20
  61. Chemistry

    Calculate the standard enthalpy change for the following reaction at 25 °C. MgCl2(s) + H2o(l) ---> MgO(s) + 2HCl(g)
  62. Chemistry

    Calculate the standard enthalpy change for the following reaction at 25 °C.? 2CH3 OH(g) + 3O2(g) -------- 2CO2(g) + 4H2O (g)
  63. chemistry

    Mno4- + So3-2 = Mno2 + sO4-2 (OH-) solve this redox reaction and give me the method also
  64. Chemistry

    What is the significance of a potential energy diagram? What kind of global picture does it provide about the reaction?
  65. Chemistry 1002

    Calculate the standard entropy change for the following reaction at 25 °C. 2 Al (s) + 3 ZnO (s) --> Al2O3 (s) + Zn (s) answer is in J/K mol
  66. chemistry

    how many electrons are transfered in one atom of Mn in the reaction?MnO2+4HCl=MnCl2+2H2O+Cl2
  67. Chemistry

    What is theoretical yield in grams of CO2 formed from reaction of 3.12g CS2 and 1.88g O2?
  68. Science

    If 5gm KClO3 is decomposed to form KCl and O2. What is the percentage yield of reaction if 1.25 gm of O2 is produced??
  69. Science

    How many atoms are in LiBr2 show in the reaction side? LiCl (22g) + Br2 (30g)
  70. chemistry

    Write the anodic reaction for the electrolysis of zinc chloride solution using platinum electrode
  71. Science

    For the reaction 2zn+o2=2zno, how many grams of zinc oxide are produced from 2.25g of oxygen?
  72. Chemistry

    What mass of phosphoric acid will be produced from the reaction of 10.00g of P4O10 with 12g water?
  73. Chemistry

    Complete and Balance the following equation using the half-reaction method; (MnO4^-) + (CH3OH) --> (Mn^2+) + (HCO2H)
  74. Science

    What is the written equation for the oxidation reaction of hydrogen chloride 4hcl+o2=2cl2+2h2o
  75. Chemistry

    Complete and Balance the following equation using the half-reaction method; (MnO4^-) + (CH3OH) --> (Mn^2+) + (HCO2H)
  76. 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: - Mn(s) ==>
  77. A & P

    how is blood clotting, immune response, allergic reaction and hormone release interrelated?
  78. chemistry

    write the net ionic equation of the following reaction: HCl(aq)+NaOH(aq)--> NaCl(aq)+H2O(l)
  79. science

    I have to draw Atomic Model Drawings of the Reaction to H2CO3 and then show a balance check. How do I do that?
  80. chemistry

    Write net ionic equation for the reaction between nitric acid and calcium hydroxide.
  81. Gen Chem

    n = 6 and E° = 0.011v for a redox reaction with Q = 7.03 x 10-1. Calculate E. Assume T = 298.15K. How do I set this equation up?
  82. chemistry

    Ag+HNO3-----AgNO3+NO+H2O balance the redox reaction using the oxidation-number method
  83. Chemistry

    For the reaction shown, compute the theoretical yield of the product (in grams) Ti(s)+2Fe(g) = TiF2(s) 6.0 g Ti, 6.0g F2
  84. help!

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

    What is n, the number of moles of electrons transferred, in the following reaction? 2 MnO4-(aq) + 16 H+(aq) + 10 Cl-(aq) ===> 2 Mn2+(aq) + 5 Cl2(g) + 8 H2O(l).
  86. chemistry

    write the balanced chemical equation for the reaction that occurs when BaCl2.2H2O is heated.
  87. chemistry

    Given the reaction 3C(s) + 4H2(g) + 5O2(g) ---> 3CO2(g) + 4H2O(l) ÄH= -2323.7 kJ How much heat would be released when 34.1 g of H2 react?
  88. Chemistry

    find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025
  89. Chemistry

    find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025
  90. Chemistry

    What is the net ionic equation for this reaction? 2MnO4 (aq) + 5H2C2O4 (aq) + 6H(aq)----->10CO2 (g) + 2Mn(aq) + 8H2O(l)
  91. chemistry

    what is the relationship between reaction rate and shape of equilibrium graph in relation to concentration vs time?
  92. chemistry

    write a balanced formula equation for the reaction between sulfuric acid and calcium metal
  93. chemistry

    If 1.00 {\rm mol} of {\rm{N}}_2 has a volume of 47.0 {\rm L} under the reaction conditions, how many liters of gas can be formed by heating 38.5 g of {\rm{NaN}}_3
  94. HCA 220

    How are blood clotting,immune response,allergic reaction and hormone release interrelated?
  95. chemistry

    Balanced equation for Oxidation-Reduction reaction for Ho2 + Cr(OH)3 = CrO4 + OH. Please show your work
  96. Chemistry

    What are the products for the reaction of Sodium hydrogen phosphate with nickel II nitrate Ni2HPO4 + Ni(NO3)2 -->
  97. Chemistry

    Balance the following redox reaction in acidic solution: H3PO4 + HNO2--> N2O4 + H3PO3
  98. Chemistry

    Balance the following redox reaction in acidic solution: H3PO4 + HNO2--> N2O4 + H3PO3
  99. chemistry!

    How many grams of NH3 can be produced from the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3H2 ! 2NH3
  100. chemistry!

    How many grams of NH3 can be produced from the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3H2 ---> 2NH3