a certain reaction has the following generaln form

74,738 results, page 5

  1. chemistry

    Consider the following reaction: 2 NO(g) + O2(g) ---> 2 NO2(g) + energy if the number of moles of oxygen is increased to two moles, the a. reaction speeds up b. reaction slows down c. temperature increases d. temperature decreases I'm not really sure what the answer to this...
  2. english

    Which one of the following statements is true for the base forms of verb? A. when the subject of a sentence is singular, add "-s" to the base form. B. Add "to" to the base form to create an adjective. C.Do not use a base form with plural subjects. D.Add "-ed" to irregular base...
  3. chemistry

    given the following data at a certain temperature, calculate K for the reaction between one mole of dinitrogen oxide gas and oxygen gas to give dinitrogen tetraoxide 2N2 + O2 TO GIVE 2N2 K=1.2X10-35 N2O4 TO GIVE 2NO2 K=4.6X10-3 1/2N2 + O2 TO GIVE NO2 K=4.1X10-9
  4. Chemistry

    Which of the following can we predict from an equilibrium constant for a reaction? 1 The extent of a reaction 2 Whether the reaction is fast or slow 3 Whether a reaction is exothermic or endothermic a. 1 only b. 2 only c. 3 only d. 1 and 2 only e. 1 and 3 only 2. (Points: 1) ...
  5. Science

    1) Which of the following is true about photosynthesis? A. It is an exothermic reaction B.It is a endothermic reaction ***** C.It produces carbon dioxide D. It occurs in animals 2) Atomic Theory is A.Subject to change if new information is discovered B.A solution to the ...
  6. General Chemistry

    According to the following reaction, how many moles of Fe(OH)2 CAN FORM FROM 175.0 mL of 0.227 M LiOH soultion? Assume that there is an excess of FeCl2 FeCl2(aq)+ 2 LiOH(aq)-(Oh)2(s)+2LiCl(aq) I have no clue how to approach this problem? Could anyone help me? I do not know ...
  7. math - pls check!!!

    Write an equation in point-slope form for the line that passes through one of the following pairs of points (you may choose the pair you want to work with). Then, use the same set of points to write the equation in standard form and again in slope-intercept form. (5, 1) and (-...
  8. college chemistry

    The rate of the following reaction: 2 NO2 2 NO + O2, is characterized by the rate constant k = 0.775 L·mol-1s-1. What is the half-life for this reaction at the same conditions when the initial concentrations are 0.0115 M? (Round your answer to 3 significant figures.) Hint: ...
  9. Chemistry

    Which of the following is TRUE for a system that is in dynamic equilibrium? A) The forward reaction goes to 100% completion. B) The concentration of products is equal to the concentration of the reactants. C) The reaction rate of the forward reaction approaches zero. D) Both ...
  10. Chemistry

    When acetone, C3H6O, is oxidized via combustion, the following reaction can be envisioned. Balance this reaction and determine the total of the coefficients when added together.
  11. chemistry

    In the following reaction which side of the reaction will be favored by a decrease in pressure. a) reactant b) product c) neither 4HCL(g)+O2(g)->2H2O(g)+2Cl2(g)+114.4KJ <-
  12. Kinetics Problem II

    The data below were collected for the following reaction: 2NO2 (g) + F2 (g) ->2NO2F(g) A: Calculate the value of the rate constant, k. B: What is the overall order of the reaction?
  13. chemistry

    Consider the following reaction: 2 Mg + O2 → 2 MgO △H rxn = -1203 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 4 moles of Mg.
  14. chemistry

    Consider the following reaction. 4Fe + 3O2 2Fe2O3 a. How many moles of O2 are required to react completely with 46.7 mg of Fe? How many grams Fe2O3, are produced from the complete reaction of 20.1 g of Fe?
  15. Chemistry

    Which of the following distinguishes a nuclear reaction from a chemical reaction? Mass is conserved. It involves atoms. There is an exchange of electrons. <my answer There is a change in the nucleus.
  16. Chem -Bob Pursley Please Help!

    Consider the following reaction: 2 HI (g) → H2 (g) + I2 (g) Assume that an experiment is carried out in which the starting concentration of HI (g) is 0.100 mol/L. No products are present at the beginning of the reaction. When equilibrium is established, the concentration of ...
  17. CHEMISTRY

    1. Give reasons for your choice. 2. Give reasons for rejecting other options. The reaction C(s) + O2(g) CO2(g) + heat reaches equilibrium in a closed reaction vessel. Which one of the following actions causes the equilibrium to shift to the right ? A increasing the volume of ...
  18. Math

    Express the following equation 6x-8y=8(x-9)+12 in: 1. Slope intercept form 2. Standard form
  19. Chemistry

    I am having great difficulty with the following questions. Any and all help will be greatly appreciated. I have read the chapter and even looked up online tutorials. I still do not understand it. 2 NO (G) + O2 (G) > 2 NO2 (G) Write the equilibrium constant expression for ...
  20. Chem

    Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use average bond enthalpies to estimate the enthalpy delta H (rxn) of the following reaction: 2SF4 + O2 ---- 2OSF4 Express your answer numerically...
  21. science

    is this correct statement After undergoing a chemical reaction substances no longer exist in their original form? If not explain. I think it is correct but then i think this might be the definition for a chemical change ( not reaction )
  22. Chemistry

    Aluminum oxide is formed by reaction of excess oxygen with aluminum. 4 Al(s) + 3 O2(g) -> 2 Al2O3(s) Calculate the mass of aluminum required to form 18.2 kg of aluminum oxide if the reaction has a percent yield of 83.4%.
  23. chemistry

    For the reactions that occurred spontaneously in the individual tables, balance these reactions assuming they are in an acidic solution. Reaction 1: Cu I^- Ag Br^- Reaction 2: Zn Pb Cu Ag Reaction 3: Cl2 Br2 I2 Reaction 1 I 2(aq) Cu2 + (aq) Ag + (aq) Br2 (aq) Reaction 2 Ag + (...
  24. Chemistry

    The fictitious compound, arrhenium fluoride ( ), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled with AhF to a ...
  25. Chemistry

    The fictitious compound, arrhenium fluoride ( ), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled with AhF to a ...
  26. Chemistry

    The fictitious compound, arrhenium fluoride ( ), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled with AhF to a ...
  27. CHEMISTRY HELP! ICE TABLES?

    At a certain temperature, K = 9.1 10-4 for the following reaction. FeSCN2+(aq)= Fe3+(aq) + SCN -(aq) Calculate the concentrations of Fe3+, SCN -, and FeSCN2+ in a solution that is initially 4.0 M FeSCN2+. OKAY SO i started by doing an ice table with FeSCN2+(aq)= Fe3+(aq) + SCN...
  28. Chemistry

    According to the following reaction, how many moles of water will be formed upon the complete reaction of 22.6 grams of hydrochloric acid with excess iron(III) oxide?
  29. Chemistry

    How many molecules of Cl2 would be formed from the reaction mixture that produces the greatest amount of products? Consider the following reaction: 4HCl(g)+ O2(g)to 2H2O +2Cl2(g)
  30. ochem

    Give the reaction products of sodium borohydride (followed by water addition at the end of the reaction) with the following compounds: a) Acetone b) m-nitroacetophenone c) 3-buten-2-one
  31. math

    express each of the following expressions in the form nPr or in the form nCr a. 27x26x25x24/4x3x2x1 b. 30x29x28x27x26
  32. Math

    How would you write the following exponential form to logarithmic form: 4^y= (1/64) My answer is: log4(1/64)=y. Am I corret?
  33. chem

    Check the correct statements for the above reaction. Choose at least one answer. a. The reaction is exothermic. b. The reaction is endothermic. c. The change in entropy is positive. d. The change in entropy is negative. e. The reaction is at equilibrium. f. The reaction is ...
  34. Chemistry

    Question: you have a clear, colorless aqueous sample in a beaker that contains either CO2^-2(aq) or C^-1(aq) or a mixture of both ions. the following aqueous reagents are available: NaCl, HNO3, and AgNO3. describe a procedure that will allow the determination of which of the ...
  35. Chemistry

    Predict the product(s) for the following reaction: H2SO4(aq) + KOH(aq) --> Choose one answer. a. K(s) + H2(g) + SO3(g) b. K2SO4(aq) + H2O(l) c. No reaction occurs d. K2S(aq) + H2O(l) e. KSO4(aq) + H2O(l) I keep getting: K2SO4(aq) + 2H2O(l) which isn't at answer. Is this ...
  36. chemistry

    Determine Kc at 298 K for the reaction 2 CH4(g) reverse reaction arrow C2H2(g) + 3 H2(g), given the following data at 298 K. (Hint: How are Kc and Kp for the reaction related?) CH4(g) + H2O(g) reverse reaction arrow CO(g) + 3 H2(g) Kp = 1.2 multiplied by 10-25 2 C2H2(g) + 3 O2...
  37. Chem

    How would one balance the following redox reaction using the half reaction method? Fe(OH)2 + O2 + H2O ---> Fe(OH)3 This is in my chemistry teacher's homework, and it comes up with an answer, but I don't see how to use the half reaction method when there is only one ...
  38. chemistry

    write the equations for the substitution reaction of methene with bromine under the following conditions. a) reaction in the presence of sunlight CH4+Br2 sunlight=? b) reaction in the absence of sunlight CH4+Br2 =?
  39. Math

    A certain club consists of 5 men and 6 women. a) How many ways are there to form a committee of 3 people and b) How many ways are there to form a committee consisting of 3 men and 4 women.
  40. Music

    What musical form preceded the sonata-allegro form, and is the sonata-allegro form still being used today? Sup' Christy, I beleive the form that preceed the sonata-allegro form would be the "minuet and trio" form. Symphonies are where you can find the s-a form. Laters.
  41. computer

    write the following exponent.form.into fractional form: 1) 55.67878E05 2) 67.34567-E04 3) 34.5678E05
  42. College Chemistry

    For a certain first-order reaction the rate constan is 2.9 s-1. what is the fraction of the reactant remaining after 4 half lives?
  43. Chemistry

    For a certain reaction, the activation energy is 52.1 kJ/mole. By what ratio will the rate constant change if the temperature is decreased from 175C to 75C?
  44. Gen Chem

    At elevated temperatures, solid silicon reacts with chlorine gas to form gaseous SiCl4. At some temperature, the equilibrium constant for this reaction is 0.30. If the reaction is started with 0.10 mol of SiCl4 in a one-liter flask, how much Cl2 will be present when ...
  45. Chemistry

    Consider the following reaction: H2+I2<->2HI A reaction mixture at equilibrium at 175 K contains P(H2)=0.958 atm, P(I2)=0.877 atm, and P(HI)=0.020 atm. A second reaction mixture, also at 175 K, contains P(H2)=P(I2)=0.616 atm, and P(HI)=0.106 atm. What will the partial ...
  46. Chemistry

    Rates of reaction, redox reactions? 10 points? An structural isomer of bromobutane (C4H9Br) can be hydrolysed using aqueous sodium hydroxide to produce butanol. This can be represented by the following equation: C4H9Br(l) + OH-(aq) > C4H9OH(l) + Br-(aq) This reaction was ...
  47. bio

    Assignment: Photosynthesis and Cellular Respiration Energy acquisition is essential for all life. Whether the organism is classified as plant or animal, single-celled or multi-cellular, the exchange of energy and the formation of products consist of a series of chemical ...
  48. science

    A + B -----> C is an example of a A) double-displacement reaction B) synthesis reaction C) single-displacement reaction D) redox reaction E) decomposition reaction
  49. Chem Help!

    I really need help for my homework on how to write the balanced equation for the following reactions. 1) Sodium reacts with iron(lll)oxide to produce sodium oxide and iron. Type of reaction: Balanced Equation: 2) Hydrogen bromide forms from hydrogen and bromine. Type of ...
  50. chemistry

    Write the balanced equation for the reaction of aqueous Pb(ClO3)2 with aqueous NaI. Include phases. What mass of precipitate will form if 1.50 L of highly concentrated Pb(ClO3)2 is mixed with 0.350 L of 0.290 M NaI? Assume the reaction goes to completion.
  51. Physics

    In fusion reaction two light nuclie fuse together to form one heavy nucleus.. We know like charges repel each other then how it's possible for the nuclie to fuse 2gether. 2. How is energy released during fusion reaction.a
  52. Chemistry

    The Kc for the following reaction at 940oC is 1.38. Given the concentrations [CO2] = 0.500 M, [H2] = 0.425 M, [CO] = 0.610 M and [H2O] = 0.695 M, one can conclude that: H2(g) + CO2(g) ↔ CO(g) + H2O(g) Question 8 options: A) the system is not at equilibrium and the ...
  53. Chemistry - Kp

    What is the Kp for the following reaction: 2NH3(g) --> N2(g) + 3H2(g) This reaction is contained in 1.0 L container at 1,000 K and has reached equilibrium. (Kc = 4.0 x 10^-2). You have initially added 1,220 moles of NH3(g) in the flask.
  54. Chemistry - Kp

    What is the Kp for the following reaction: 2NH3(g) --> N2(g) + 3H2(g) This reaction is contained in 1.0 L container at 1,000 K and has reached equilibrium. (Kc = 4.0 x 10^-2). You have initially added 1,220 moles of NH3(g) in the flask.
  55. chemistry

    Answer the question(s) below about the following reaction. 2H2O2 (l) → 2H2O(g) + O2(g) If 50.0 grams hydrogen peroxide produce 15.0 g oxygen, what is the percent yield for this reaction?
  56. Enthalpy

    Consider the following reaction: 2 Mg + O2 → 2 MgO ΔH rxn = -1203 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 4 moles of Mg. How do I set this up correctly?
  57. Chemistry

    Check my answer please? A reaction requires 22.4 L of gas at STP. You have 45.0 L of gas at 100 kPa and 373 K. Which of the following statements is true? The gas constant is 8.31 L-kPa/mol-K. You will have an excess of gas and the reaction will occur. <--------- You will ...
  58. Chemistry

    At a certain temperature, the equilibrium constant for the following chemical equation is 2.00. At this temperature, calculate the number of moles of NO2(g) that must be added to 2.64 mol of SO2(g) in order to form 1.10 mol of SO3(g) at equilibrium. SO2(g) + NO2(g) <--->...
  59. chemistry

    Which of the following os a true statement about the periodic table? A. periods form horizonal rows;groups form vertical columns B. groups form horizontal rows;periods form vertical columns C. catagories form horizontal rows;gases form vertical columns D. gases form horizontal...
  60. Chemistry

    Which of the following elements is least likely to form a cation that will then form an ionic bond with an ion of a Group 7A element? S K Rb Fr
  61. Chemistry

    H2 and F2 react according to the following equation, forming HF. H2(g) + F2(g)  2HF(g); H° = –271 kJ If H2(g) and F2(g) were mixed in a thermally insulated vessel, the reaction that occurred would be a. endothermic, and the temperature of the reaction system...
  62. AP Chem

    A sample of solid KCl (potassium chloride) weighing 0.500 g is mixed with an unweighed sample of solid MgCl2 (magnesium chloride) and the mixture is then completely dissolved in water to form a clear solution. An aqueous solution of AgNO3 (silver nitrate) is then added to this...
  63. chemistry

    A sample of solid KCl (potassium chloride) weighing 0.500 g is mixed with an unweighed sample of solid MgCl2 (magnesium chloride) and the mixture is then completely dissolved in water to form a clear solution. An aqueous solution of AgNO3 (silver nitrate) is then added to this...
  64. Chemistry - check answer

    A 20.0 L reaction vessel contains 0.016 moles CO2, 1.05 moles of CO, and 2.00 moles of C. The mixture is approaching the following equilibrium: CO2(g) + C(s) <--> 2CO(g) a) Calculate the reaction quotient Q. b) If value of K is 1.17, predict which direction the reaction ...
  65. biology

    The primary reaction catalyzed by catalase is the decomposition of hydrogen peroxide to form water and oxygen, which occurs spontaneously, but not at a very rapid rate. Write a balanced equation for this reaction. (Remember that catalase is not a reactant or a product and can ...
  66. Math-Fast pleasee :]

    Which of the following is the equation for a line parallel to the y-axis & passing through (3,2)? a) x=3 b) y=2 c) y=3/2 D) x=2/3 I know in slope intercept form it would be y=mx+b. But how do i do this in standard form? any vertical line has the equation in the simple form x...
  67. Chemistry - Science (Dr. Bob222)

    Hydrazine is used as a rocket fuel because its reaction with oxygen is extremely exothermic: N2H4(liquid) + O2(g)  N2(g) + 2H2O(liquid) ΔH(reaction) = -615 kJ mol-1 What is the enthalpy of this reaction if water were produced in the gaseous rather than the liquid ...
  68. chemistry

    Consider the following reaction: CH3X + Y  CH3Y + X At 25oC, the following two experiments were run, yielding the following data: Experiment 1 : [Y]0 = 3.0 M [CH3X] Time(hr) 7.08 x 10-3M 1.0 4.52 x 10-3M 1.5 2.23 x 10-3M 2.3 4.76 x 10-4M 4.0 8.44 x 10-5M 5.7 2.75 x 10-...
  69. Chemistry

    Consider the following reaction between sulfur trioxide and water: SO3(g)+H2O(l)→H2SO4(aq) A chemist allows 61.5 g of SO3 and 11.2 g of H2O to react. When the reaction is finished, the chemist collects 51.0 g of H2SO4. Determine the percent yield for the reaction.
  70. Chemistry

    The following initial rate data apply to the reaction F2(g) + 2Cl2O(g) ----> 2FClO2(g) + Cl2(g) Expt. # [F2](M) [Cl2O](M) Initial rate (M/s) 1 0.05 0.010 5.0 x 10^–4 2 0.05 0.040 2.0 x 10^–3 3 0.10 0.010 1.0 x 10^–3 Which of the following is the rate law (rate ...
  71. Chemistry

    biochemists consider the citric acid cycle to be the central reaction sequence in metabolism. One of the key steps is an oxidation catalyzed by the enzyme isocitrate dehydrogenase and the oxidizing agent NAD+. Under certain conditions, the reaction in yeast obeys 11th-order ...
  72. Equilibrium

    The following reaction has an equilibrium constant (Keq) of 160. 2 NO2(g) <--> 2 NO(g) + O2(g) What will be the reaction quotient (Q) and in which direction will the reaction proceed if the partial pressure of NO2 is 5.0*10^-4 atm, NO is 0.080 atm, and O2 is 0.020 atm? ...
  73. Chemistry

    The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled with AhF to a ...
  74. chemistry

    Given one of the starting materials and end product for the following reaction, show all reactants, reaction conditions in brackets (where known) and products. ethanol from calcium carbide
  75. chemistry

    Given one of the starting materials and end product for the following reaction, show all reactants, reaction conditions in brackets (where known) and products. acetic acid from chloroethane
  76. chemistry

    Starting with equal concentrations of all solutes, predict the direction in which the following reaction will proceed. H3PO4(aq) + HCO3-(aq) ¨ H2PO4-(aq) + H2CO3(aq) a. left b. right c. no net reaction
  77. chemsitry

    1)Balance the following gas-phase reaction and 2) write its reaction quotient, Qc: CH4(g)+F2(g)......>>.....<<....... CF4(g)+HF(g) Include the physical states of all reactants and products in your balanced equation. Qc=
  78. chemistry

    Consider the following reaction. 2 CO (g) + O2 (g) −→ 2 CO2 (g) What is most likely true about the entropy change for this reaction? Why would the delta s of the rxn be less than zero? thanks.
  79. Chemistry Pretest

    Consider the following balanced equation. 2 H2 + O2 ---> 2 H2O Which of the following statements is false? a) One molecule of O2 will react with 2 molecules of H2 b) One mole of O2 will react with 2 moles of H2 c) The complete reaction of 32.0 g of O2 will produce 2 moles ...
  80. Chemistry II

    At a certain temperature, Kc = 33 for the reaction: H2(g) + I2(g) 2HI(g) Assume that the initial concentrations of both H2 and I2 are 6.00 x 10-3 mol/L. Find the concentration of each reactant and product at equilibrium.
  81. Chemistry

    Chemistry HELP - Rates of reaction, redox reactions? 10 points? An structural isomer of bromobutane (C4H9Br) can be hydrolysed using aqueous sodium hydroxide to produce butanol. This can be represented by the following equation: C4H9Br(l) + OH-(aq) > C4H9OH(l) + Br-(aq) ...
  82. Chemistry

    Hi I was hoping to get some help on this. It's review for my chemistry text on Monday and I would be grateful if someone could help me out. My teacher has been out for two weeks but we still have to know this material. 1. The following data was collected for the reaction ...
  83. Chemistry

    Consider the following reaction: CaCO3(s)→CaO(s)+CO2(g). Estimate ΔG∘ for this reaction at each of the following temperatures. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.) A) 310K B) 1070K C) 1470K ...
  84. Chemistry

    an exothermic reaction involves a. breaking weak bonds to form weak bonds. b. breaking weaker bonds to form stronger bonds c. breaking srtong bonds to form strong bonds. d. breaking stronger bonds to form weaker bonds. I think that it is a.
  85. Please help this is due Chemistry Ap

    Kinetics Challenge Problem Consider the following reaction: CH3X + Y → CH3Y + X At 25oC, the following two experiments were run, yielding the following data: Experiment 1 : [Y]0 = 3.0 M [CH3X] Time(hr) 7.08 x 10-3M 1.0 4.52 x 10-3M 1.5 2.23 x 10-3M 2.3 4.76 x 10-4M 4.0 8...
  86. Chemistry

    consider the following reaction: 2CH3OH(g) yields 2CH4(g) + O2(g) change in enthalpy= 252.8kJ Calculate the amount of heat transferred when 26.0 g of {\rm CH_3OH} (g) is decomposed by this reaction at constant pressure.
  87. Chemistry

    Answer the questions about the following reaction. 4Al(s) + 3O2(g) 2Al2O3 (s) How many molecules of O2 are used in the reaction? How many oxygen atoms are required? How many moles of Al2O3 are formed? What is the mole ratio of Al to O2?
  88. chemistry

    In a reaction vessel, the following reaction was carried out using 0.250 mol of NH3 and 0.100 mol of N2, 4NH3(l) + N2 (g) = 3N2H4 (l) what is the compositon in moles in the vessel when the reaction is completed? Is the answer: 0 mol NH3, 0.063 mol N2, and 0.188 mol N2H4?
  89. chemistry question check

    consider the following chemical reaction: 2 H20 ---> 2H2 + O2 How many moles of H20 are required to form 1.8 L of O2 at a temperature of 315 K and a pressure of 0.957 atm? I got 0.066 moles. Correct? Nope. Do you have some reasoning that you followed you want to have ...
  90. AP Physics

    To stop a car, you require first a certain reaction time to begin braking. Then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 56.7 m when its initial speed is 82.5 km/h, and 24.4 when the ...
  91. Chemistry

    The following is given: 20 ml of HCl (2.0 M) added with 5 ml of Na2S2O3 (0.3 M) with 5 ml of H2O S2O3^-2(aq) + 2H^+1 (aq) --> S (s) + SO2 (g) + H2O (l) Calculate the following: a) Reaction rate when 30 mg of sulphur is formed (in 30 ml of solution) after 55 seconds. b) Rate...
  92. Biology

    Synthesis means the process by which simple compounds are united to form more complex materials. Dehydration means loss of water. Explain why chemists refer to the joining of monosaccharide molecules to form disacchardies as dehydration synthesis reaction
  93. BIOCHEMISTRY

    Mark each statment that is true or false and give reasons. you will get credit only if your reasoning is correct a) at a steady state of an enzyme catalyzed reaction, there is not net change in [S] or [P] b) the linear anomer of beta-glucose is the more reactive form c) ...
  94. Chemistry

    The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled with AhF to a ...
  95. Chemistory

    The reaction has an equilibrium constant of = 0.154. If 6.60 of , 4.30 of , and 11.60 of are added to a reaction vessel with a volume of 5.30 , what net reaction will occur? A-The reaction will proceed to the left to establish equilibrium. B-The reaction will proceed to the ...
  96. Chemistry

    I have 3NaBH4 + 4BF3.Et2O to form 2B2H6 th number of moles of NaBH4 is 0.0368mol and the number of moles of BF3.Et2O is 0.0162mol accoring to the ratio of reaction 3:4 the limiting reactant is BF3.Et2O so its the one used to find number of moles of dibroane (B2H6)? and then in...
  97. Chemistry

    Consider the following unbalanced reaction. P4(s) + F2(g) PF3(g) What mass of F2 is needed to produce 212 g of PF3 if the reaction has a 84.2% yield?
  98. chemistry

    Consider the following unbalanced reaction. P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the reaction has a 79.8% yield?
  99. Chemistry

    35. In a calorimeter, the energy content of a substance is calculated from a measure of the temperature change in a known mass of a. iron b. air c. water d. steel C? 36. A decrease in the reactant concentration, per unit time, in a reaction is a measure of the a. heterogenous ...
  100. science

    When Q < K, what can you conclude about the reaction? A. The reaction is not yet at equilibrium, and the reaction will proceed in the forward direction. B. The reaction is not yet at equilibrium, but the direction of the reaction must be experimentally determined. C. The ...
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  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