a certain reaction has the following generaln form

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  1. chemistry help!!! please!!! DrBob222 I need you!!

    The G value for formation of gaseous water at 298 K and 1 atm is -278 kJ/mol. What is the nature of the spontaneity of formation of gaseous water at these conditions? A. The reaction is sometimes spontaneous. B. The reaction is spontaneous. C. The reaction may or may not be ...
  2. English

    1. He stood up form the chair. 2. He got up form the chair. 3. He rose up form the chair. 4. He jumped up form the chair. ----------------------------------- Can we use all the verbs here? Which verbs are commonly used?
  3. chemistry

    Consider the 2-step reaction mechanism fast 2NO + H2 $ N2O+H2O slow N2O+H2 ! N2+H2O net 2NO + 2H2 ! N2 + 2H2O Which of the following rate laws is cor- rect for the given mechanism? Note that the constant k may represent a combination of elementary reaction rate constants.
  4. chemistry

    Consider the 2-step reaction mechanism fast 2NO + H2 $ N2O+H2O slow N2O+H2 ! N2+H2O net 2NO + 2H2 ! N2 + 2H2O Which of the following rate laws is cor- rect for the given mechanism? Note that the constant k may represent a combination of elementary reaction rate constants.
  5. Chemistry

    Consider the following equilibrium reaction: NaHCO3(s) Na2CO3(s) + H2O(g) + CO2(g) When 100 g of sodium hydrogen carbonate are added to a reaction vessel, the temperature is increased to 200°C, and the system comes to equilibrium. What happens to the partial pressure of ...
  6. physics

    if hydrogen and chlorine react to form hydrogen what would be the volume of HCL that is formed if 60m cubed of hydrogen is completely used up in the reaction?
  7. Chemistry

    in an experiment, ammonia gas, NH3(g) was bubbled through distilled water. Some of the dissolved ammonia gas, NH3, reacted with the water to form the aqueous ammonia ions, NH4. When red litmus paper was placed in contact with the aqueous solution, the paper turned blue. This ...
  8. Chemistry (kinetics)

    None of the orders in this reaction were 0 order; however, reactions can be 0 order. Using the idea of a reaction mechanism and rate limiting step, explain how a reaction can be 0 order for a substance.
  9. Chemistry

    I: The standard reaction free energy at equilibrium is zero. II: A reaction stops when the equilibrium is reached. III: An equilibrium reaction is not affected by increasing the concentrations of products. Which of these statements is/are true?
  10. chemistry

    What is the equilibrium constant for the following reaction? 3A + 2B <---> 2C
  11. chem

    Balance the Following Reaction: Mg(s) + H2O(g)Mg(OH)2(s) + H2(g)
  12. bmcc

    which of the following is an oxidation reduction reaction ?
  13. Chemistry

    What is the equilibrium constant for the following reaction? 3A + 2B <---> 2C
  14. Big Data

    Suppose ABC is a frequent itemset and BCDE is NOT a frequent itemset. Given this information, we can be sure that certain other itemsets are frequent and sure that certain itemsets are NOT frequent. Other itemsets may be either frequent or not. Which of the following is a ...
  15. CHEM 101

    Calculate ΔHrxn for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and given ΔH values: Ca(s)+CO2(g)+12O2(g)→CaCO3(s), ΔH= -812.8 kJ 2Ca(s)+O2(g)→2CaO(s), ΔH= -1269.8 kJ
  16. Chemistry

    How would you solve this problem? C4H8(g)--> 2C2H4 Determine the order of the reaction and the rate constant based on the following pressures, which were recorded when the reaction was carried out 430 C in a constant volume vessel. Time (s) P(C4H8)(mmHg) 0 400 2,000 316 4,...
  17. Chemistry

    Iron is obtained from iron ore according to the following reaction: Fe2O3+CO---> Fe+CO2 (unbalanced). a. Assuming the blast furnace is 90.0% efficient in recovering the iron, what is the actual mass of iron obtainable from a ton of ore? b. What is theoretical yield of iron ...
  18. chemistry

    The following data were obtained at 25° C for the reaction [1+2+2] C2H5Br + OH- C2H5OH + Br- Determine the rate law for the reaction from these data. [C2H5Br] [OH-] Rate 0.150 0.200 4.8 x 10-5 0.300 0.200 9.6 x 10-5 0.450 0.200 14.4 x 10-5 0.300 0.600 28.8 x 10-5 (ii) The ...
  19. Chemistry

    Copper metal reacts with hot concentrated sulfuric acid solution to form aqueous copper (II) sulfate, sulfur dioxide gas and water. What type of reaction is this?
  20. Chem 1020

    Please help me!!! For the reaction, calculate how many grams of the product form when 3.0 g of Cl2 completely reacts. Assume that there is more than enough of the other reactant. 2Na(s)+Cl2(g)→2NaCl(s)
  21. Chemistry

    During reaction mechanism... A. catalyst does not change the reaction mechanism. B. catalyst changes the reaction mechanism. C. catalyst always makes a reaction mechanim more complicated. Catalysts lower the activation energy and provide alternative pathways to increase the ...
  22. Chemistry

    The reaction for the decomposition of dinitrogen monoxide gas to form an oxygen radical is: N2O(g)==>N2(g)+O(g) . If the activation energy is 250 kJ/mol and the frequency factor is 8.0 x 1011 s-1, what is the rate constant for the first-order reaction at 1000 K? k = A * exp...
  23. Chemistry

    For the following reaction, 3.93 grams of carbon tetrachloride are mixed with excess methane (CH4). The reaction yields 4.10 grams of dichloromethane (CH2Cl2). methane (CH4) (g) + carbon tetrachloride (g) dichloromethane (CH2Cl2) (g) What is the theoretical yield of ...
  24. 7th grade math standard form scientific notation

    In standard form: 5. 3.2 x 10^3 7. 4.1 x 10^8 9. Write the average weight of a blue whale, 2.6 x 10^5, in standard form. 15. 2.5 x 10^-3 17. 1.05 x 10^-2 19. Write the size of a grain of very fine sand, about 9.35 x 10^-3 cm, in standard form. Can somebody help? I have been ...
  25. Chemistry

    Reaction Mechanism Formation of hydrogen bromide takes place as: H2 + Br 2<- 2HBr -> If the chemical reaction has occured by a mechanism that involves more than one step. What is the reaction occurs by the given mechanism?
  26. College Chemistry

    Which of the following changes generally lead to greater reaction rates? (I)Increasing the temperature (II)Decreasing the concentration of a reactant or (III) adding a catalyst I know that change in temperature influences the reaction, in this case it speeds up and that adding...
  27. chemistry 12 lab

    We did a lab on equilibrium and this is one of the following questions: When Ag ions are added to FeSCN ions (which are red in colour), the colour disappears, and a white precipitate of AgSCN forms. The question is.. Explain why Fe can be used as an indicator in a reaction to ...
  28. Chemistry II

    Consider the following balanced chemical equation: 3(NH4)2CrO4 + 4Al + 24HCl --> 3CrCl2 + 6NH4Cl + 4AlCl3 + 12H2O. a) How many moles of HCl would be required for the reaction of 0.0123 moles Al? b) How many grams Al would be required for the reaction of 2.00g (NH4)2CrO4? ...
  29. science, chemistry

    2Al(s)+ 3Cl2(g)=2AlCl3(s) For the above reaction calculate: A) delta H, then state whether the reaction is endothermic or exothermic B) delta s, then whether the reaction becomes more or less disorder. C) delta G, the state whether the reaction is spontaneous or non-spontaneous
  30. Chemistry

    Can someone check my answers for the following questions...btw HAPPY HOLIDAYS TO EVERY AT JISKHA! 1)As the magnitude of Keq increases, the amount of product formed in a reversible reaction: REMAINS CONSTANT 2)The Keq of reacion 4 x 10-7. At equilibrium: THE REACTANTS ARE ...
  31. Chemistry

    Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. The reaction is the following. Cr2O3(s) + 2 Al(s) → 2 Cr(l) + Al2O3(s) What masses of chromium(III) oxide and aluminum must be ...
  32. Chemistry

    Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is: C2H2(g) + 2H2(g) === C2H6(g) Given the following, what is the Kp for the reaction? C2H2(g): 209.2 ΔG˚f (kJ/mol) H2(g): 0 ΔG˚f (kJ/mol) C2H6(g): -32.89&#...
  33. Chemistry

    Which of the following is the best definition of Hess' Law? A. Heat evolved in a given process can be expressed as the sum of the heats of several processes that, when added, yield the process of interest. B. The enthalpy of a process is the difference between the enthalpy of ...
  34. Pchem

    2 NO2(g) N2(g) + 2 O2(g) The ¥ÄH¡Æ for the reaction above is -66.4 kJ. The system is initially at equilibrium. What happens if NO2 is added to the reaction mixture at constant temperature and volume? (Select all that apply.) And here's the options. The reaction absorbs ...
  35. chemistry// organic

    What type of reaction forms an alkaloid salt? a. The reaction between an amine and an alcohol. b. The reaction between an amine and an acid. c. The reaction between an alcohol and a base. d. The reaction between an amine and a base. e. The reaction between an alcohol and an acid
  36. Chemistry

    A chemical reaction takes place in a container of cross-sectional area 100 cm2. As a result of the reaction, a piston is pushed out through 19 cm against an external pressure of 630 torr. What is the value for w for this reaction? (Sign does matter.) Answer in units of J
  37. Chemistry

    A possible reaction for converting methanol to ethanol is CO(g)+2H2(g)+CH3OH(g)→C2H5OH(g)+H2O(g) ΔH0 for this reaction at 25∘C. ΔH0 = -165.7 kJ ΔS0 for this reaction at 25∘C. ΔS0 = -227.4 J/K ΔG0 for this reaction at 25∘C. ΔG0 = -97.9 kJ - Estimate Kp for the ...
  38. music appreation

    Writing Assignment: What musical form preceded the sonata allegro form? This form is often considered dramatic and rewarding. In what way is this so and why? Refer to the listening examples to help make your point.
  39. English

    4.)Which word or phrase is closest in meaning to the word unanimous? a.)justifies b.)in agreement c.)divided d.)not accurate 5.)Which word is the best choice to complete the following sentence?She didn’t want to get in trouble for breaking the window, so she wrote a note ...
  40. Chemistry

    Organic chemists state that the rate of a chemical reaction can be doubled by increasing the reaction temperature by ten degrees Celsius. Explain this drastic increase in reaction rate using the concept of reactins and kinetic molecular theory
  41. chemistry

    I know the answers for these questions, I just want to learn why 1- Use the table to determine which of the following species will convert Cd2+ to Cd. A. Fe3+ B. Pb2+ C. Zn D. Co2+ E. Sn 2- Which of the following salts will form an acidic aqueous solution? A. NaCl B. NaCN C. ...
  42. Algebra uno check+ help?

    So, I've got these problems: To tell which form the equation is in. 1)2x+8y=-3 I think this one is standard form. 2)y=-5x+8 I think this is slope intercept form. 3)y+4=2(x-6) I think this is also slope intecept form. Could somebody tell me if my answers are correct, if not ...
  43. Chemistry

    Consider the following reaction: 2Na + Cl2  2NaCl ΔH = -821.8 kJ (a) Is the reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when 5.6 g of Na reacts at constant pressure. (c) How many grams of NaCl are produced during an enthalpy change of ...
  44. chem

    The combustion of hydrogen–oxygen mixtures is used to produce very high temperatures (approximately 2500 °C) needed for certain types of welding operations. Consider the reaction to be H2(g) + 1/2O2(g) --> H20(l) Standard enthalpy is -241.8kj What is the quantity of heat...
  45. AP Chemisty

    N2(g)+3F2 yields 2Nf3(g) Delta H(degree)298=-264KJ mol-1;Delta S(degree)298=-278J K-1 mol-1 The following questions relate to the synthesis reaction represented by the chemical equation above. a.)CAlculate the value of the standard free energy change, Delta G(degree)298, for ...
  46. English

    1. Make sure all windows are closed. 2. Make certain all windows are closed. 3. Be certain all windows are closed. 4. Be certain that all windows are closed. 5. Be sure to come here in time. 6. Be certain to come here in time. 7 Make sure you don't smoke in this room. 8. Make ...
  47. chem.

    the rate limiting step is unimolecular with A as the sole reactant. A+B-----C+D If A and B are both 0.200M, then the rate reaction is 0.0050M/s A. What is the rate of the reaction if A is doubled? B. starting with original concentrations what is the rate reaction id B is ...
  48. general chemistry

    A sample consisting of 0.025 mol of a solid compound is placed inside a metal cylinder. The cylinder was immersed in a water bath consisting of 10.00 kg of water at an original temperature of 25.00 °C. When the compound decomposes, the temperature of the water rises to 29.52...
  49. chemistry

    a. Cl2 + 2NaI → 2NaCl + I2 This is a single replacement reaction. b. 2K + 2HCl → 2KCl + H2 This is a single replacement reaction. c. N2 + 3H2 → 2NH3 This is a synthesis reaction. d. 2KClO3 → 2KCl + 3O2 This is a decompisition reaction
  50. chemistry

    The G value for formation of gaseous water at 298 K and 1 atm is -278 kJ/mol. What is the nature of the spontaneity of formation of gaseous water at these conditions? A. The reaction is never spontaneous. B. The reaction is sometimes spontaneous. C. The reaction is spontaneous...
  51. Chemistry

    Why are the hydrogen bonds of a certain molecule weaker in solution (with water as a solvent) than in a vacuum? I'm supposed to have three reasons, and so far all I can come up with is that the water lowers the activation energy required to form the bond and that the molecules...
  52. Ratios of Similar Figures

    1. Write the following ratio in simplest form: 32 min : 36 min a. 8 : 9 b. 8 : 36 c. 32 :9 d. 128 : 144 2. In a sports equipment locker, there are 81 balls and 45 baseball mitts. Write the ratio of balls to baseball mitts in simplest form. a. 9 : 5 b. 10 : 18 c. 10 : 5 d. 9 : ...
  53. Chemistry

    Hi Dr. Bob, I am quite stumped on how to figure out when chemical equations have a REACTION or NO REACTION. I have read the material in my textbook and even took out a chemistry books for the "Utterly Confused" to try to figure this out. Example: Zn(s) + H3PO4(aq)--> Zn3(...
  54. CHEMISTRY

    You carry out a reaction with 28.9mL of 0.711M solution of NiNO3)2. The reaction has a change in H of -26.4KJ/mol rxn. What is the q, the heat of the reaction, in joules? I first found the mols of the solution using molarity and then found the joules of the reaction through ...
  55. biology

    Substance X is converted to substance Y in a chemical reaction. What role would a catalyst play in this scenario? A. It would increase the solubility of substance X into the solvent needed to speed up the reaction. B. It would speed up the reaction by becoming part of the ...
  56. Biology

    Substance X is converted to substance Y in a chemical reaction. What role would a catalyst play in this scenario? A. It would increase the solubility of substance X into the solvent needed to speed up the reaction. B. It would speed up the reaction by becoming part of the ...
  57. Chemistry

    Consider the following reaction: 4NH3(g) +5O2(g) -->4NO(g) +6H2O(g) Suppose we have two flasks connected by a stopcock. In one flask, we have 2.0L of NH3(g) at a pressure of .500 atm. In the other flask, we have 1.00L of O2(g) at a pressure of 1.5atm. When the stopcock is ...
  58. Science

    Ethene gas (C2Ha) reacts with oxygen to form carbon monoxide and water. Write a balanced equation for this reaction, then find the mole ratios of substances on each side of the equation.
  59. Chemistry

    The rate constant for a certain reaction is = 4.30×10−3 s^-1. If the initial reactant concentration was 0.400 M , what will the concentration be after 19.0 minutes? Rate would be first order therefore I used. A=A initial*e^-kt I keep getting .0030 M but supposely I am ...
  60. Chemistry

    Consider the chemical reaction below equated   2N2O5 (g) -> 4NO2 (g) + O2 (g) knowing that a certain period of time, N2O5 consumption rate is 0.10 mole / s, determine for the same time interval: a) the average rate of formation of NO2 b) the average speed O2 formation
  61. chem

    a sample containing .800 moles of POCl3 is enclosed in a .5 liter vessel at a certain temperature. when the equilibrium for the dissociation reaction PCl3(g)<==>POCl(g) + Cl2(g) is attained, it is found that the vessel contains ,259 moles of Cl2. Calculate the ...
  62. Chemistry(Please check)

    8. The half-life of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b.the reaction is first order c.the reaction is second order d. the reaction starts out first order and changes...
  63. language

    Which of the following sentences is punctuated correctly? A. A carpenter must use certain tools, hammers, saws, chisels, to finish a job. B. A carpenter must use certain tools hammers, saws, chisels -to finish a job. C. A carpenter must use certain tools - hammers, saws, ...
  64. chemistry plse help

    Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: P4(g) + 10 Cl2(g) → 4PCl5(s), ΔH°rxn = ? Given: PCl5(s) → PCl3(g) + Cl2(g), ΔH°rxn= +157 kJ P4(g) + 6 Cl2(g) → 4 PCl3(g), ΔH°rxn = -1207 kJ
  65. MAT-134 Math XL

    Graph the following linear equation using one of the following methods: 1st slope intercept form y = mx + b 2nd table of values 3rd x-intercept and y-intercept 1. 3x + 4y = 12
  66. AP Chem

    Reaction 1: NaOH + HCL --> H20 + NaCl delta H of -100.332 kj/mol Reaction 2: NaOH + NH4Cl --> NH3 + H20 : delta H of 358.639 kj/mol Reaction 3: HCl + NH3 --> NH4Cl : delta H of -51.701 kj/mol Use your answers from question 2 above and Hess's law to determine the ...
  67. chemistry

    One of the ways to produce iron is to take iron(II) oxide and react it with carbon monoxide to get pure iron and carbon dioxide. The reaction is FeO(s) + CO(g) = Fe(s) + CO2(g). What is the partial pressure of CO2(g) if 2.00 atm of CO and excess iron(II) oxide are used to ...
  68. chemistry

    What is the entropy change associated with the chemical reaction that occurs when iron oxide is converted to its metal form? Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g) A. Zero B. Positive C. Negative D. Cannot be determined I think the answer is b or c.
  69. science

    What change do you expect if the value of the reaction quotient is greater than the value of the equilibrium constant? A. The rate of the forward reaction is greater than the rate of the reverse reaction. More reactant forms. B. The rate of the forward reaction is greater than...
  70. Chemistry

    Elemental sulfur occurs as octatomic molecules, S8. How many moles of fluorine gas, F2, are needed for complete reaction with 50.5 g sulfur to form sulfur hexafluoride? Do not enter units.
  71. Chemistry

    Elemental sulfur occurs as octatomic molecules, S8. How many moles of fluorine gas, F2, are needed for complete reaction with 50.5 g sulfur to form sulfur hexafluoride? Do not enter units.
  72. Science

    1.what term best describes the measure of the increase in the concentration of a product per unit time? A)activation energy B)kinetics C)reaction rate D)reaction time 2. In the following equation, which of the reactants that is a bronsted-lowry acid HCN+H20-->H30+ + CN I ...
  73. chemistry 105

    Sulfuric acid dissolves aluminum metal according to the following reaction: 2Al(s)+3H2SO4(aq)-->Al2(SO4)3(aq)+3H2(g) Suppose you wanted to dissolve an aluminum block with a mass of 14.7 g. What minimum mass of H2SO4(in g) would you need? What mass of H2 gas(in g) would be ...
  74. Chemistry

    Calculate ∆H˚ for the following reaction using the given bond dissociation energies. CH4 (g) + 2O2 (g) --> CO2 (g) + 2H2O (g) Bond.......∆H˚ (kJ/mol) O-O........142 H-O.........459 C-H.........411 C=O........799 O=O........498 C-O.........358 ∆H...
  75. chemistry

    The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which one of the following ...
  76. chemistry

    The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which one of the following ...
  77. chemistry

    Imagine a hypothetical reacion for which, H = 0 kJ · mol−1. Considering the Le Chatelier principle, which of the following statements is true? a. Raising the temperature of the system will have no effect. b. Raising the temperature of the system will cause the reaction...
  78. Chemistry

    please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) a. Write the oxidation and reduction half-cell reactions. Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) +2 +4 +2 +4 Zn(s)->Zn2+(aq)+2e- (zinc is oxidized...
  79. science

    223 RA arrow + 4 88 a 2 complete the following reaction
  80. science

    223 RA arrow + 4 88 a 2 complete the following reaction
  81. Chemistry

    What kind of reaction is the following equation? Ca + H20 -> Ca(OH)2 + H2 (g)
  82. chemistry

    which of the following is not a driving force for a chemical reaction?
  83. Chemistry

    What is the enthalpy for the following reaction? N204 = 2NO + O2
  84. chemistry

    how do I write the rate of the reaction for the following: Cl(g)+O3(g)-> ClO(g)+O2(g)
  85. Chemistry

    Which of the following is the best definition of Hess' Law? A. Since enthalpy is a state function, it will be different if a reaction takes place in one step or a series of steps. B. Heat is always released by the decomposition of 1 mole of a compound into its constitute ...
  86. MATH

    Solve by finding y and graph using the slope and y-intercept: 3x-y=1 x-y=3 3x-8=y Use the point-slope form of an equation to write the following in slope intercept form: m= 3 point: (4,2) m= 3/8 point: (3,5)
  87. chemistry

    Write "oxidation" before the reaction below which is anoxidation reaction; write "reduction" before the reaction belowwhich is a reduction reaction. a.____________________ Na----> Na+ (small+) + e- b.____________________ Cl + e- ----> Cl- What does it mean when chemists ...
  88. English

    6.)Which of the following sentences contains a verb that is correctly formed in the perfect tense? a.)Susan is spoken at our club before. b.)Desmond has love swimming in the ocean. c.)Desmond has love swimming in the ocean. d.)Jake have painted his room three times. 7.)How do ...
  89. chemistry 116

    The thermite reaction demonstrated in class requires high temperatures to start the reaction. A simple open flame is not enough to start the reaction. Once the reaction is going, then it generates enough heat to keep the reaction going. According to the literature on thermite...
  90. chemistry

    The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which one of the following ...
  91. Chemistry

    For the following electrochemical cell, what is the correct, balanced reaction? Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s) A. Cu(s) + Cu2+(aq) → Ag+(aq) + Ag(s) B. Cu(s) + Ag+(aq) → Cu2+(aq) + Ag(s) C. Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s) D. Cu2+(aq) + Ag(s) &#...
  92. Physics

    Consider the following standing wave, (all units are SI) z=0.2sin(0.4y)cos(350t) (a) what is the wavelength? (b) The values of y where the displacement is always zero, are of the form y=a+bn, where n=0,±1,±2,3, etc. What is b ? (c) The values of t where the displacement at ...
  93. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g) 200.9 226.7 H2(g) 130.7 0 C2H6(g) - - -84.7 Bond Bond Energy (kJ/mol) C-...
  94. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g)/ 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond Bond Energy...
  95. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g) / 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond Bond Energy...
  96. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g) / 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond Bond Energy...
  97. AP Chemistry

    At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2SO2(g) + O2(g)<-> 2SO3(g) What concentration of SO3 would be in equilibrium with 0.250 moles of SO2 and 0.885 moles of O2 in a 1.00 liter container at this temperature? Note: These latter ...
  98. Chemistry

    Write the net ionic equation for this reaction occurring in water: Sodium phosphate and calcium chloride are mixed to form sodium chloride and calcium phosphate. 1. No reaction occurs. 2. 2Na3PO4 + 3Ca2+ -> 6Na+ + Ca3(PO4)2 3. 2 PO3−4 + 3Ca2+ -> Ca3(PO4)2 4. PO2&#...
  99. Hess' law

    Which of the following is the best definition of Hess' Law? A. Heat is always released by the decomposition of 1 mole of a compound into its constitute elements. B. Since enthalpy is a state function, it will be different if a reaction takes place in one step or a series of ...
  100. chemistry

    For the following: a)give the reaction type; b)complete and balance the reaction; c)using your answer to part b, determine how much of the other reactant is needed, and how much of each product will be formed, for the given starting amount (below); and d) calculate the percent...
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  67. 66
  68. 67
  69. 68
  70. 69
  71. 70
  72. 71
  73. 72
  74. 73
  75. 74
  76. 75
  77. 76
  78. 77
  79. 78
  80. 79
  81. 80
  82. 81
  83. 82
  84. 83
  85. 84
  86. 85
  87. 86
  88. 87
  89. 88
  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99
  101. 100