1. Chemistry

    A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment, 0.1107 g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894
  2. Chemistry

    A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment, 0.1107 g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894
  3. skyiline college

    A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment, 0.1107 g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894
  4. chem

    Citric acid, the compound responsible for the sour taste of lemons, has the following elemental composition: C, 37.51%; H, 4.20%; O, 58.29%. Calculate the empirical formula of citric acid. (Type your answer using the format CO2 for CO2.) thanks
  5. Chemistry

    My questions keep getting cut off. What am I doing wrong? Here is my question again. Thanks for the help. What is the empirical formula for a compound whose molecular formula is C2Cl6? a) CCl3 b) CCl4 c) C2Cl6 d)CCl e) more info needed I think the answer
  6. chemistry

    Consider the following chemical reaction: 2 KNO3 (s) ------------> 2 KNO2 (s) + O2 (g) What volume, in liters, of O2 at 31.2oC and 2.045 atm pressure can be produced from the decomposition of 54.92 g of KNO3 (FM = 101.1 g/mol).
  7. Chemistry Equilibrium

    At 500 ºC, the decomposition of water into hydrogen and oxygen, 2H2O(g) 2H2(g) + O2(g) has Kc = 6.0 × 10-28. What are the concentrations of H2 and O2 that are present at equilibrium in a 2.00 L reaction vessel at this temperature if the container
  8. Chemistry

    The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C)---{k(/s)} --- lnk---1/T 290--- {2.52*10^-5}--- ?--- ? 299--- {5.25*10^-5}--- ? --- ? 330--- {6.30*10^-4}--- ?--- ? Complete the table above and,
  9. Chemistry

    The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C)---{k(/s)} --- lnk---1/T 290--- {2.52*10^-5}--- ?--- ? 299--- {5.25*10^-5}--- ? --- ? 330--- {6.30*10^-4}--- ?--- ? Complete the table above and,
  10. Chemistry

    The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C) k(/s) lnk 1/T 290--- 2.52*10^-5 ? ? 299--- 5.25*10^-5 ? ? 330--- 6.30*10^-4 ? ? Complete the table above and, using your graphing calculator
  11. chemistry

    If a student attempts to identify an unknown compound by methodused in this experiment. She finds that when she heated a sampleweighing 0.4862 g the mass went down appreciably, to 0.3067 g. Whenthe product was converted to chloride, the mass went up, to
  12. chem

    Maleic acid is an organic compound composed of 41.39% C, 3.47% H, and the rest oxygen. If 0.250 mol of maleic acid has a mass of 29.0 g, what are the empirical and molecular formulas of maleic acid?
  13. Chemistry

    A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00 g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment 0.1107g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894
  14. Chem--PLEASE HELP 911

    A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00 g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment 0.1107g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894
  15. Chemistry

    A compound containing boron and hydrogen has been synthesized. You perform two experiments to determine the molecular formula of the compound. A 0.492 g sample of the compound is burned in pure oxygen to produce B2O3 and 0.540 g of water. In the second
  16. Chemistry

    Decomposition reaction: CH2=CH2(g)---> CH4(g) + C (Graphite) If the decomposition begins at 10c and 40.0 atm with a gas density of .215 g/ml and the temp increases by 950K. (a) what is the final temperature of the confined gas (ignore volume of graphite
  17. math

    calculate the effective yield, then rank them from highest yield to lowest yield: 12% compound annually 11.8% compound quarterly 11.9% compound semiannually 11.7% compound daily
  18. chemistry

    At body temperature (37°C), the rate constant of an enzyme-catalyzed decomposition is 3.0 × 108 times that of the uncatalyzed reaction. If the frequency factor, A, is the same for both processes, by how much does the enzyme lower the Ea?
  19. Chemistry

    Consider the decomposition reaction of the following represented hydrogen peroxide: 2 H2O2 (aq) = 2 H2O + O2 In the experiment, the average speed of this reaction given time interval was 16 mol • s-¹ in relation to hydrogen peroxide. What is the average
  20. Chemistry

    The rate constant for the decomposition of acetaldehyde, CH3CHO, to methane, CH4, and carbon monoxide, CO, in the gas phase is 1.59 ✕ 10−2 L/mol/s at 711 K and 3.63 L/mol/s at 855 K. Determine the activation energy (in kJ/mol) for this
  21. Chemistry

    The following reaction is used to produce tungsten(VI)oxide: WS3(s) + O2(g) ¨ WO3(s) + SO2(g) The WO3 is then heated and undergoes a decomposition reaction produce tungsten and oxygen gas. How many grams of tungsten could be produced if 39.27 grams of
  22. AP Chemistry

    The heat of reaction for burning 1 mole of a certain compound X is known to be -477.7 kJ. The calorimeter constant of the bomb being used is 2500 j/degree celsius and the initial temperature of the water is 23.2 degrees celsius. a) if 22.54 g of compound X
  23. Chemistry

    Compound A reacts with element B (a halogen) to form compounds C and D as the only products. When 2.000 grams of B react with an excess of sodium metal 2.363 grams of the sodium halide are formed. Compound A is a volatile liquid at room temperature with a
  24. Chemistry

    Administratium bromide (AdBr) decomposes readily at temperatures exceeding 37°C. The figure below shows how the rate of reaction varies with the concentration of AdBr. The rate, r, is in units of M s-1 and the concentration of AdBr, c, is in units of M
  25. chemistry

    6. Compound C (MW = 550) is provided at a concentration of 25g/100mL. 1mL is taken and compound D is to be added (MW = 1025, concentration = 75mM) to give a final ratio of compound C:D of 4:1. What volume of compound D is to be added?
  26. Chemistry

    Two elements, R and Q, combine to form two binary compounds. In the first compound, 9.50 g of R combines with 3.00 g of Q. In the second compound, 7.00 g of R combines with 4.50 g of Q. Show that these data are in accord with the law of multiple
  27. chemistry

    Compound C (MW = 550) is provided at a concentration of 25g/100mL. 1mL is taken and compound D is to be added (MW = 1025, concentration = 75mM) to give a final ratio of compound C:D of 4:1. What volume of compound D is to be added?
  28. science

    Compound C (MW = 550) is provided at a concentration of 25g/100mL. 1mL is taken and compound D is to be added (MW = 1025, concentration = 75mM) to give a final ratio of compound C:D of 4:1. What volume of compound D is to be added?
  29. science help!!!!!!!!!

    Which sequence of processes must occur for an atom of carbon to go from car to a tree? A.resperation, decomposition B. Combustion, photosynthesis C. Fossilization, decomposition D. Fossilization, photosynthesis Is the answer B?
  30. Chemistry

    I need to write a balanced equation for this problem and am having difficulty doing so. The question is this: use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO2 is
  31. Chemistry

    Classify the reaction type (formation, simple composition, decomposition, combustion, single replacement, double replacement) and predict the balance equation 1. AL(s) + 02(g) ------> 2. Ag2O(s)------> 3. Br2(1) + KI(aq) ------->
  32. Chemistry

    An organic acid has a percentage composition by mass of C 41.4%, H 3.4%, and O 55.2%. A solution containing 0.250g of the acid, which is dibasic required 26.60 cm cubed of NaOH solution (0.20 mol.dm -3) for neutralisation. Calculate the empirical formula,
  33. biochemistry

    Enzyme X is a highly pigmented protein that imparts the characteristic color to certain blue-green algae. It also facilitates a reaction necessary to the survival of this species; we can follow the kinetics of this reaction by measuring the conversion of
  34. Science

    Which sequence of process must occur for an atom of carbon to go from a car to a tree? A. respiration, decomposition B. combustion, photosynthesis C. fossilization, decomposition D. fossilization, photosynthesis
  35. Chemistry

    A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment, 0.1107 g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894
  36. Chemistry

    A substance undergoes a first-order decomposition. After 40.0 min at 500 degrees C, only 12.5% of the original sample remains. What is the half-life of the decomposition? If the original sample weighted 243 g, how much would remain after 2 hours?
  37. 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
  38. Chemistry

    A compound containing only C, H, and N yields the following data. (i) Complete combustion of 34.8 mg of the compound produced 33.3 mg of CO2 and 40.9 mg of H2O. (ii) A 66.3-mg sample of the compound was analyzed for nitrogen by the Dumas method, giving
  39. Chemistry

    A decomposition reaction is one in which a reactant decomposes to a limiting reactant and a theoretical reactant. True or False
  40. chem

    The decomposition of sulfuryl chloride (SO2Cl2) is a first-order process. The rate constant for the decomposition at 660 K is 4.5 10-2 s-1. (a) If we begin with an initial SO2Cl2 pressure of 425 torr, what is the pressure of this substance after 74 s? what
  41. Chemistry

    A student reacted 5.33 grams of cobalt with oxygen gas and obtained 7.50 grams of cobalt oxide. Determine the empirical formula of this cobalt-oxygen compound based upon this experiment.
  42. Chemistry

    Compound X contains only carbon, hydrogen, nitrogen, and chlorine. When 1.00 g of X is dissolved in water and allowed to react with excess silver nitrate, AgNO3, all the chlorine in X reacts and 1.95 g of solid AgCl is formed. When 1.00 g of X undergoes
  43. CHEMISTRY

    Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with the concentration of UrO2 at 75∘ C. The rate
  44. chemistry

    Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with the concentration of UrO2 at 75∘ C. The rate
  45. chemistry

    You are analyzing a solid isolated from a reaction and find that its boiling point is over 1000 ∘C. You dissolve the compound in water solution and recrystallize it to produce some solid crystals that you use to determine that the compound is a
  46. Chemistry

    I am trying to answer my questions for thermal decomposition of malachite lab. I have moles of malachite in 1g= 0.0045 moles of Cuo produced= 0.0009 ratio of moles of Cuo produced per moles of malachite decomposed=0.0045/0.0009=5.1 the balanced euation =
  47. Chemistry check my answers

    Please check my answers For each of the 7 reactions in this experiment, write a balanced equation and classify it as a synthesis, decomposition, single replacemnt, neutralization, or double replacement reaction. Reaction 1 1)Adjust a burner flae to high
  48. chemistry

    Oxygen can be produced by the thermal decomposition of mercuric oxide: 2 HgO(s) → 2 Hg(l) + O2(g) How many liters of O2 are produced at 50.0°C and 0.947 atm by decomposition of 57.0 g of HgO?
  49. Chemistry

    Many homes in rural America are heated by propane gas, a compound that contains only carbon and hydrogen. Complete combustion of of a sample of propane produced 2.641 grams of carbon dioxide and 1.422 grams of water as the only products. Find the empirical
  50. chemistry

    Use the following information to identify element A and compound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a
  51. chemistry

    You have a compound that is subject to decay. If you originally started with 80 g of the compound and you ended up with 5 grams 30 days later, what is the half-life of the compound?
  52. chemistry

    A total of 2.00 \rm mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 115 g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7 ^\circ \rm C. What is the enthalpy of this
  53. Chemistry

    The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory. What volume (L) of O2 gas at 25 °C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO3 (s)? Here is my work: V=nRT/P .0611995 mol of O2 x
  54. Chemistry

    A compound contains 'N' and 'O' atom. The ratio of mass percentage of 'N' and 'O' is 7:16. If the vapour density of compound is 46, then find the no of 'O' atoms present per molecule of the compound.
  55. Chemistry

    Are the following compounds or mixtures? Please help to check the answers. 1) starch - compound 2) chalk - compound 3) coal - mixture 4) drain water -compound
  56. chemistry

    A total of 2.00mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 185g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7C . What is the enthalpy of this reaction? Assume
  57. AP Chemistry

    This is part of a marathon problem, we have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information given. a.) All the compunds are electrolytes, although
  58. Chemistry

    A compound is 85.6% carbon by mass. The rest is hydrogen. When 10.0 g of the compound is evaporated at 50.0 ∘C, the vapor occupies 6.30 L at 1.00 atm pressure. What is the molecular formula of the compound?
  59. Chemistry

    An organic compound on analysis gave C=57.8% and H=3.6% and rest of oxygen.The vapour density of the compound was found to be 83.Find the molecular formula of the compound?
  60. Chemistry

    The foul odor of rancid butter is due largely to butyric acid, a compound containing carbon, hydrogen, and oxygen. Combustion analysis of a 4.30-g sample of butyric acid produced 8.59g CO_2 and 3.52 g H_2O.Find the empirical formula for butyric acid.
  61. Chemistry

    A 28.4288 g sample of impure magnesium car- bonate was heated to complete decomposition according to the equation MgCO3(s) ! MgO(s) + CO2(g) . After the reaction was complete, the solid residue (consisting of MgO and the original impurities) had a mass of
  62. Chem

    COMPOUND 1 CH2 = CH-CH-OH with CH3 under the second CH Plus CH3-CH-CH2-C (double bond O off C and -OH off C) also a CH3 under CH i) complete the equation for this reaction ii) Indentify any new functional groups in the organic product(s)name them iii)State
  63. AP chem

    This is part of a marathon problem, we have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information given. a.) All the compunds are electrolytes, although
  64. AP chem

    This is part of a marathon problem, we have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information given. a.) All the compunds are electrolytes, although
  65. CHEMISTRY

    question 1.Explain why fructose and alpha-hydroxyketose reacts with benediict’s solution. what structural arrangement is necessary for the reaction to occur? question 2. When aldose react with Barfoed reagent what type of organic compound forms. What
  66. 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
  67. 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
  68. 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
  69. Chemistry

    42. List 2 things a chemical formula indicates about a compound: -It indicates the elements present in the compound. -The relative amount of each compound. Are those correct? 44. What element do most of the polyatomic ions contain? Thanks -MC
  70. Chemistry help

    Write two molecular formulas that reduce to each to each of the given empirical formulas. Do not include the given empirical formulas. 1. Al2(SO4)3 . Cr(CN)3
  71. chemistry

    a sample consisting 22.7g of a nongasous unstable compound X is placed inside a metal cylinder with a radius of 8Cm and a piston is carefully placed on the surface of the compound so that for all practical purposes the distance between the bottom of the
  72. Physical Science

    What kind(s) of particles make up (a) gaseous compound (b) liquid compound (c) solid compound?
  73. chemistry

    Suppose the following: HO-C(H2)-C(H2)-OH + 2 HI --> I-C(H2)-C(H2)-I + water How many mL of the first compound* are needed to react with 9.3 grams of HI? (The density of the first compound is A = 1.11 g/mL) *by first compound, i mean HO-C(H2)-C(H2)-OH
  74. Chemistry Help?

    30, A: One atmospheric compound is responsible (after it has dissolved in water) for both the general acidity of normal rainwater and the acidity of much soil. What is this compound? 30, B: Is this compound put into the atmosphere solely by pollution? 30,
  75. Chemistry

    Compound X contains only carbon, hydrogen, nitrogen, and chlorine. When 1.00 g of X is dissolved in water and allowed to react with excess silver nitrate, AgNO3, all the chlorine in X reacts and 1.95 g of solid AgCl is formed. When 1.00 g of X undergoes
  76. Chemistry

    1. A combination reaction may also be a displacement reaction. True or False 2. The combustion of an element is always a combination reaction. True or False For number 1, I first thought true, but then again, nothing is being displaced in a combination
  77. Chemistry - Stoichiometry

    Elements X and fluorine react to form two different compounds. In the first reaction 0.480g of X reacts with 1.000g of F. In the second, 0.960g of X reacts with 1.000g of F. Which are possible formulas for the two compunds First Compound Second Compound
  78. chemistry

    A liquid was analyzed to be 54.5% C, 9.10% H, and 36.4% O. An empty flask, whose mass was 45.32 g, when filled with the vapor of the liquid at 735mm Hg and 99.2°C had a mass of 46.05 g. The volume of the flask was found to be 263.2 mL. empirical formula
  79. biochemistry

    Enzyme X is a highly pigmented protein that imparts the characteristic color to certain blue-green algae. It also facilitates a reaction necessary to the survival of this species; we can follow the kinetics of this reaction by measuring the conversion of
  80. Chemistry

    According to the Star Trek "Fifth Interstellar Geophysical Conference Standard" version of the periodic table, there are 140 known elements. In what group of the periodic table would you place element 117, "topaline" which is reported to have been
  81. chemistry

    The activation energy for the decomposition reaction, 2 HI---> H2 + Hi Is 186 kj/mol. The rate at 555 k is 3.2 x 10 -7L/mol. Sec. What is the rate at 645 k
  82. chemistry

    What does a catalyst do to the rate of reaction? What would you expect to happen to the rate of decomposition of dinitrogen pentoxide if a catalyst were added to the system?
  83. Chemistry

    What volume of N2O (s) will be generated if 3.13 g of NH4NO3 (s) decomposes at 1.00 atm and 50 degrees celsius, given the following decomposition reaction: NH4NO3 (s) --> N2O (g) + 2 H2) (l)?
  84. Chemistry

    The Cu2+ ions in this experiment are produced by the reaction of 1.0g of copper. Information already found out .016 mol Cu2+ produced Overall reaction is Cu2+(aq)+Cl-(aq)+Cu(s)=2 CuCl(s) Maximum mass of CuCl that can be prepared from the reaction sequence
  85. Assignment help (chemistry)

    in the reaction, N2O4-->2NO2, if the rate of formation of NO2 were 0.010 mol/L*s,, what would be the rate of decomposition for N2O4 Plz show steps thx
  86. CHEMISTRY: DUE TONIGHT. CHECK MY ANSWER?

    1. For the simple decomposition reaction below, rate = k[AB]2 and k = 0.40 L/mols. AB(g) A(g) + B(g) If the initial concentration of AB is 1.60 M, what is [AB] after 13.0 s? ANSWER: (.4)(13)=5.2 1/1.6=.625 5.2-.625=4.575 1/4.575= .2185 I tried .22 & .21.
  87. Chemistry

    You have .8 liters of a 0.5M HCl solution. If you use this solution to complete a decomposition reaction of HCl how many moles of hydrogen (H2) would be produced?
  88. Chemistry

    If 16.9 g of CO2 was produced from the thermal decomposition of 41.83 g of CaCO3, what is the percentage yield of the reaction? CaCO3(s) > CaO(s) + CO2(g)
  89. Chemistry

    1) Determine the Kc for the following experimental conditions: compound A+compound B --> Compund D Compound: A B M 0.003 0.0023 Volume used: 5 mL 8 mL Total volume = 25 mL, using graph 2 and a %T of 24 for compund D molecular weight compund D = 535 g/mol
  90. AP Chem ?

    I had posted this question before and wanted to know if I had gotten the right answers. We have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information
  91. Chemistry

    Suppose 0.500 g of sulfur combines with 1.00 g of copper. What is the empirical formula of the compound? The atomic mass of sulfur is 32.065 g and the atomic mass of copper is 63.546 g.
  92. 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
  93. Chemistry

    4.12 grams of Zinc are placed in a crucible with 3.00 grams (excess) of Sulfur. when reaction is complete the product mass is 6.10 grams. What mass of Sulfur should be used in the simplest formula calculation? Find the empirical formula of Zinc Sulfide. My
  94. chemistry

    In the following reaction, how many liters of carbon dioxide, CO2, measured at STP, would be produced from the decomposition of 143 g of magnesium carbonate, MgCO3? MgCO3---MgO+CO2
  95. Chemisty

    I need a recap of how to do the question below. I just need the basic guidelines: The enthalpy change for the reaction 2H2(g)+O2 > 2H2O is -571.6kJ. Determine the enthalpy change for the decomposition of 24.0g H2O.
  96. chemistry

    In the following reaction, how many liters of carbon dioxide, CO2, measured at STP, would be produced from the decomposition of 143 g of magnesium carbonate, MgCO3? MgCO3----MgO+CO2
  97. Chemistry

    I have a question about solubility rules and net ionic equations so for example : CuSO4+Ba(NO3)2----->BaSO4+Cu(NO3)2 Okay so I know BaSO4 is insoluble while Cu(NO3)is solulable, that means BaSO4 will have a precipitate while Cu(NO3) doesn't. So does that
  98. chemistry

    Compound C (MW = 550) is provided at a concentration of 25g/100mL. 1mL is taken and compound D is to be added (MW = 1025, concentration = 75mM) to give a final ratio of compound C:D of 4:1 . What volume of compound D is to be added? ''DR BOB 222 IT IS A
  99. English

    In the following sentence are they compound, complex, or compound complex All girls were taught spinning when they were quite young, and they also learned weaving. I think compound complex While housewives were at the marketplace, they met at the public
  100. Chemistry

    The odor of pineapple is due to the compound ethyl butyrate, which contains hydrogen, carbon, and oxygen. When 3.70g of ethyl butyrate are burned, 8.41g of carbon dioxide and 3.43g of water are the only products. Determine the empirical formula of ethyl