What is the empirical of compound (X) going through the following decomposition reaction?

79,817 results, page 35

  1. Chemistry

    For the following fusion reaction, calculate the change in energy per mole. 2/1 H + 3/2 He -> 4/2 He + 1/1 H
  2. Chemistry

    For the following fusion reaction, calculate the change in energy per mole. 2/1 H + 3/2 He -> 4/2 He + 1/1 H
  3. science

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

    What element is undergoing oxidation (if any) in the following reaction? CH4(g) + 2 O2(g) ¨ CO2(g) + 2 H2O(g)
  5. Chemistry

    Name the organic product of the following nucleophilic substitution reaction. OH+CH3CH2I
  6. Chemistry

    What is the minimum amount of 5.9M M H 2 SO 4 necessary to produce 26.7g of H 2 (g) according to the following reaction? 2Al(s)+3H 2 SO 4 (aq)¨Al 2 (SO 4 ) 3 (aq)+3H 2 (g)
  7. chemestry

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

    Calculate delta g and Kp for the following equilibrium reaction. Keep getting 7.2E-81 and the answer is 4.5E-81 Why?
  9. Chemistry

    AP Chem - Which element is oxidized in the following reaction: CuO(s) + H2 (g)  Cu(s) + H2O (l)
  10. Chemistry

    Name the organic product of the following nucleophilic substitution reaction OH-+CH3I
  11. English academy.chemistry

    Complete the following reaction 2F2(g) +2H2O(ĺ)=?
  12. kumar

    The addition of a catalyst during a chemial reaction alters which of the following quantities?
  13. chemistry

    How many mL of 0.6 M H2SO4 solution are needed to react completely with 23.62 g of Fe2O3 in the following reaction?
  14. chemistry

    Calculate the standard enthalpy change for the following reaction at 25 °C. H2O+C(graphite)(s) --> H2(g) +CO(g)
  15. chemistry

    estimate the enthalpy change for the following reaction: OF2 + H2O = O2 + 2HF
  16. chemistry

    What is the ∆G for the following reaction under standard conditions (T = 298 K) for the formation of NH4NO3(s)?
  17. Anatomy

    I have a question In a dehydration synthsis reaction which of the following occurs a. hydrogen and oxygen are removed from the reactant b. water is added to the reactants c. water is broken down into hydrgen and oxygen d. both a and c I think it would definitely be a and I ...
  18. ENGLISH HELP!!! Correcting Grammar

    What is the main verb in the following sentence? 1. This building, the largest on campus, houses most of the administration offices. a. building b. campus c. houses d. there is no main verb 2. My lady and I are taking a long walk through the park this evening. a. is a simple ...
  19. Chemistry

    When 38.21 g of pure copper reacts with 192.83g of iodine, 190.83g of a compound containing only copper and iodine result. 40.21g of iodine remain when the reaction is complete. a. Do these results support the Law of Conservation of Mass? Explain. b.does this compund obey the ...
  20. Last Question Plz helppp:((im soo sleepy!!:(

    1)The reaction between solid sodium and iron(III) oxide, Fe2O3(s), is one in a series of reactions that occurs when an automobile air bag inflates. 6Na(s) + Fe2O3(s) -> 3Na2o(s) + 2Fe(s) If 100.0 g of iron(III) oxide are used in this reaction, what mass of solid iron will ...
  21. chemistry

    The scientist has an IR spectrometer in her lab. She acquires an IR spectrum of compound X and finds a relatively weak intensity absorption at ~2100 cm-1 and some medium to strong absorptions in the 2850~2960 cm-1 region plus a strong absorption at 3300 cm-1. Identify the type...
  22. Chemistry

    Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs, write NOREACTION. Are my answers below correct? I used the textbook 1. sodium chloride and lead (II) acetate 2,potassium sulfate and ...
  23. General Chemistry

    The problem is: Calculate the standard free-energy change for the following reaction at 25 degrees Celsius. 2Au^+3(aq) + 3Cr(s)-> 2Au(s) + 3Cr^+2(aq) I worked it out, getting half reaction: Au^3+ + 3e- -> Au; E = 1.498 Cr^3+ + 3e- -> Cr; E = -0.74 Ecell = 1.498 - (-0....
  24. Urgent chemistry

    Given the following reaction: 3 H2(g) + N2(g) <- -> 2NH3(g) + heat If the following changes were to occur what direction shift will it have (left or right) And what will be the reason of the shift Changes/Stress on system: Decreasing the pressure Adding heat Removing N2
  25. English

    Which of the following is correct? a)Who's toothbrush is floating in the toilet? b)Whose going to Dairy Queen with me? c)Whose jacket is that? d)b&c I believe the answer is C
  26. English

    In the following sentence, what kind of phrase is “to the library”? “I will be going to the library soon.” A.prepositional B.participial C.infinitive D.gerund I think it is A
  27. Math

    What is the solution of the following equation? 2 – 8x = -6 Is the ordered pair (-2, 9) a solution of the equation y = x - 7? Solve the following equation. 3(z – 2) – z = 4z – 20 Find the slope of the line that passes through the points (4, 8) and (10, 5) using the ...
  28. Fluid Mechanics

    Water flows into a cylindrical tank through pipe 1 at a rate of 25 ft/s and leaves through pipe 2 at 10 ft/s and through pipe 3 at 12 ft/s. Pipe 4 is an open air vent. Internal diameters of the pipes are: D1=3 in, D2= 2 in, D3=2.5 in, D4=2 in. Calculate a) dh/dt and b) the ...
  29. Chemistry

    For many years the recovery of gold-that is, the seperation of gold from other materials-involved the use of potassium cyanide: 4AU + 8KCN + 02 +2H20 -> 4KAu(CN)2 + 4KOH What is the minimum amount of KCN in moles needed to extract 29.0 g (about an ounce) of gold? Now my ...
  30. Chemistry - thermochemistry

    Hydrogen gas (H2) is generated by the following reaction. Ca(s) + 2 HCl(aq) → CaCl2(aq) + H2(g); ΔH = −542.7 kJ/mol When this reaction takes place in a cylinder (fitted with a piston) containing 1.000 mol Ca(s), 542.7 kJ heat is lost to the surroundings. Because a gas is ...
  31. chemistry

    CH3OH(g) ----> CO(g) + 2H2 (g) (delta H =+90.7k) A) is heat absorbed or released in the course of this reaction? b) calculate the amount of heat transferred when 45.0g of CH3OH(g)is decomposed by this reaction at constant pressure. c) for a given sample of CH3OH, the ...
  32. Chemistry

    Consider the following mixture of SO2(g) and O2(g).If SO2(g) and O2(g) react to form SO3(g),draw a representation of the product mixture assuming the reaction goes to completion. What is the limiting reactant in the reaction? If 96.0 g of SO2 reacts with 32.0 g O2, what mass ...

    Method for getting correct answer? Thank you! The reaction below is an endothermic reaction. What would one have to do to shift the equilibrium to the right? SO2Cl2(g)↔SO2(g) + Cl2(g) a. Decrease the temperature b. Increase the temperature c. Remove some reactant d. An ...
  34. science(chemistry)

    Using condensed electron configurations and Lewis electron-dot symbols to depict the monatomic ions formed from each of the following reactants, predict the formula of the compound the ions produce. 1) K and P
  35. math

    Ali needs to borrow Rs 500,000 for three years. Which of the following option is more beneficial for him? (i) 3.2 % simple interest rate (ii) 1.6% compound interest rate when it is compounded semi annually
  36. physics

    rollercoaste starts at 12m high with a v of 1.2m/s and climbs to 9.0m Assume the track is frictionless... a) how fast is it going when it reaches the low pointbetween the crestss. b)how fast is it going at the top of the secondcrest (9.0m) i have no idea which eq. to use..
  37. Writing

    Ok in this sentence, I am quoting a line from the Lord of the Flies. My question is, do i capitalize the T in the first 'they' ? : Sam and Eric explain this rebellion to Ralph by stating, “’They hate you, Ralph. They’re going to do you.’ ‘They’re going to hunt you ...
  38. algebra

    A car leaves @ 10am going 60 mph, another leaves opposite direction going 50mph how long till they are 330 miles apart. I know the answer is 1pm but I need to know a variable and how to create the problem
  39. physics

    A 75g person on skis is going down a hill sloped at an angle 30.the coefficient of kinetic friction between the skis and the snow is 0.15.how fast is the skier going 10s after starting from rest?
  40. motion problem

    A man rowed 30km downstream. it took him 2hrs more time in going back than in going downstream. if the current is 2kph, what is his speed in still water? (with solution pls... tnx)
  41. MIS

    Could someone help me rephrase this sentence please? In fact, the MIS course, it is something I am going to take seriously, it is going to help me learn more about technology, and I will be able to use my knowledge when I open my own business.
  42. Calculus Related Rates

    Two people leave from the same spot and walk at 4ft/sec going north and 5ft/sec going northwest. At 30 seconds, how fast is the distance between them changing?
  43. maths

    An investor invests £20 000 over three years in a scheme which offers compound interest of 4.5%, compound annually. Which one option gives the amount of money in the scheme after 3 years, rounded to the nearest pound? A. £22 891 B. £22 700 C. £22 833 D. £22 823 E. £22 ...
  44. English

    How is your day going? - My day is going good! (Are these expressions grammatical?)
  45. chemistry hellllllllllllllllllp

    Oxidising and reduction- Chemistry? Oxidation and reduction can be described as the loss and/or gain of electrons from an ion or atom (species) in a chemical reaction. For the following aqueous reaction, select the species that is oxidized and similarly the one that is reduced...
  46. Chemistry

    Consider the reaction N2(g)+3H2<-->2NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases momentarily ...
  47. chemistry

    Examine the scenario. Chemical Reaction A and Chemical Reaction B involve the same two reactants. Chemical Reaction A is performed in a hot container, while Chemical Reaction B is performed in a cold container. Which of the answer choices correctly describes which chemical ...
  48. chemistry

    If you had used a different mass of magneisium metal would you expect the empirical formula of the compiund to be the same? explain
  49. science

    15g of an unknown hydrocarbon burns in oxygen to give 4,7g of carbon dioxide and 19,35g of water calculate the empirical formula
  50. science

    Which option correctly describes the scientific way of thinking? (Select all that apply) skeptical empirical practical rational A,D?
  51. science

    Which option correctly describes the scientific way of thinking? (Select all that apply) rational skeptical practical empirical B,D?
  52. AP Chemistry

    Q - An electrochemical reaction occurs between an unknown element and zinc. The half-cell reaction for the zinc is: Zn(s) → Zn2+(aq) + 2e− The cell potential for the reaction is Eºcell = 1.83 V. Is the reaction spontaneous or nonspontaneous? Explain. What is the half-cell...
  53. CHE 111-03L

    The following system is at equilibrium: 2X(s)+4Y(g)⇌Z(g) Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction. Half the Volume Remove Some X Double the Volume Add More X
  54. college Chemistry

    1. If 25 grams of Iron (III) hydroxide is dissolved in a 500mL volumetric flask, what is the Molarity of the solution? 2. An unknown metal has a volume of 5.25 mL and a density 2.71 g/mL. What is the weight of the metal in grams? 3. An unknown metal, heated to an unknown ...
  55. chemistry

    1(a) when 25.0ml of 0.500 mol.dm3 H2SO4(AQ) SOLUTION IS added to 0.025dm3 of 1.00 moldm3 KOH SOLUTION , THE TEMPERATURE OF THE REACTION MIXTURE RISES FROM 23.50 CELCIUS TO 30.17 CELCIUS . THE SPECIFIC HEAT CAPACITY AND DENSITY OF WATER 4.20j.g.celcius and 1.00 g.cm. the ...
  56. Chemistry

    1.Chlorine gas can be produced commercially by passing an electric current through a concentrated solution of sodium chloride (brine). The unbalanced equation is NaCl(aq) + H2O(ℓ) → NaOH(aq) + Cl2(g) + H2(g). If the brine contains 163 g of NaCl, how much Cl2 can be...
  57. chemistry

    It took 20 seconds for a certain volume of oxygen to effuse through an orifice(small opening) at 298K. How long will it take the same volume of each of the following gases to effuse through the same orifice at the same temperature?. The gases are hydrogen, helium, and chlorine...
  58. math

    Erica's average rate going uphill was 80% of her average rate going downhill over the same route, and it took Erica 10 minutes longer to go up the hill than to go down the hill. What was the total number of minutes Erica spent going uphill and downhill?
  59. Chemistry

    Okay so I'm doing an assignemtn and one of the questions has stumped me. It asks: The solid fuel booster rockets on the space shuttle employ a mixture of aluminium and ammonium perchlorate. The reaction is: 2Al(s) + 2NH4ClO4(s) → Al2O3(s) + 2NO(g) + 3H2O(g) + 2HCl(g) ...
  60. chemistry

    Fluorine gas can react with ammonia gas to produce dinitrogen tetrafluoride gas and hydrogen fluoride gas. This reaction is described by the following balanced equation: 5 F2 (g) + 2 NH3 (g) N2F4 (g) + 6 HF (g) What mass of hydrogen fluoride gas is produced from 135 g of ...
  61. English

    1. James Joyce was a great master of stream of consciousness. simple sentence*** compound sentence complex sentence compound-complex sentence 2. Joyce's, however, owed much to French novelist who had used the technique much earlier. simple sentence compound sentence complex ...
  62. English

    A dependent clause and an independent clause joined together form a: A. compound sentence. B. simple sentence. C. compound-complex sentence. D. complex sentence. D
  63. Chemistry: Equilbrium

    How does adding NH3 to the reaction below affect the equilibrium of the reaction? N2(g) + 3H2(g) <=> 2NH3(g) Increasing the amount of NH3 will make Q larger than K. A net reaction occurs in the direction to increase NH3, or the forward reaction. Increasing the amount of ...
  64. AP Chemistry

    in a coffee-cup calorimeter, 50.0 mL of 0.100 M AgNO3 and 50.0 mL of 0.100 M of HCl are mixed to yield the following reaction: Ag+ (aq) + Cl- (aq) >> AgCl (s) the two solutions were initially at 22.60 degree celsius, and the final temperature is 23.40 degree celsius. ...
  65. AP Chemistry

    in a coffee-cup calorimeter, 50.0 mL of 0.100 M AgNO3 and 50.0 mL of 0.100 M of HCl are mixed to yield the following reaction: Ag+ (aq) + Cl- (aq) >> AgCl (s) the two solutions were initially at 22.60 degree celsius, and the final temperature is 23.40 degree celsius. ...
  66. Chemistry

    HELP! we just started kinetics and i have no clue how to solve this problem. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g...
  67. sita college

    It took 20 seconds for a certain volume of oxygen to effuse through an orifice(small opening) at 298K. How long will it take the same volume of each of the following gases to effuse through the same orifice at the same temperature?. The gases are hydrogen, helium, and chlorine...
  68. chemistry

    When 4.167 g of a unknown compound is added to 34.1 g of a particular solvent, the freezing point of that solvent decreases by 0.8 °C. Determine the molar mass of the unknown compound. (The freezing point constant of the solvent is 2.82 °C/m).
  69. chemistry-Chemical Formulas And Reactions

    What is the balaced equation for the decomposition of aluminum chloride? 2AlCl3==> 2Al + 3Cl2 if it simply decomposes and nothing else is added.
  70. chemistry

    A pair of students performs an experiment in which they collect 27 g CaO from the decomposition of 41 g CaCO3. Are these results reasonable? Explain your answer using percentage yield.
  71. Chemistry

    Calculate the mass of H2O produced by the decomposition of 2.21g of CuCO3 x Cu (OH)2. What happend to this water? This question is incredibly important and I am stuck on it, thank you very much for your help
  72. algebra

    Could somebody tell me in simple terms why equating coefficients works in partial fraction decomposition? Like a simplified proof or something? I don't understand why.
  73. s.t mary's school

    what amout of zinc will be required to generate sufficient hydrogen to completely combined with oxygen obtained by complete decomposition of 30 g of potassium clorate?
  74. Chemistry

    A sample of iron(II) sulfate was heated in an evacuated container to 920 K, where the following reactions occurred. Reaction (a): 2 FeSO4(s)--> Fe2O3(s) + SO3(g) + SO2(g) Reaction (b): SO3(g)--> SO2(g) + 1/2 O2(g) After equilibrium was reached, the total pressure was 0....
  75. English

    1) In the story "A Meeting in the Dark," John's character advances the plot and communicates the theme through each of the following conflicts except. A)man vs. man B)man vs. nature C)man vs. society D)man vs. himself 2) Read the following sentences that reflects John's ...
  76. Chem II

    The equilibrium constant of a reaction is 12.6. If the rate constant of the reverse reaction is 5.1 x 10 -2 the rate constant for the forward reaction is _____ 0.32 0.16 0.64 0.08 I don't even know where to start on this question. Any direction will help
  77. chemistry

    For which of the reactions listed below will Gibbs free energy always be negative? A. An exothermic reaction that increases in entropy B. An endothermic reaction that decreases in entropy C. An endothermic reaction that increases in entropy D. An exothermic reaction that ...
  78. chemistry

    lactic acid is the avid responsible for the sour test in spit milk. on the basis of combustion analysis, it's percentage composition by mass is 40.00% carbon, 6.71%hydrogen and x% oxygen. a. Calculate the empirical formula of lactic acid b. The molar mass of lactic acid is 90g...
  79. chemistry

    Which of the following is a molecular compound that contains five atoms per molecule? germanium tetrabromide dinitrogen monoxide dinitrogen pentoxide nitrogen diselenide please explain. I am having a very hard time comprehending this stuff thanks
  80. chemistry

    The chemical reaction N2(g) + 3 H2(g) ↔ 2 NH3(g) is at equilibrium. An experimenter injects a small amount of N2 into the reaction chamber. What happens to the forward reaction rate right after the injection of the N2?What happens to the reverse reaction rate right after...
  81. chemistry

    The chemical reaction N2(g) + 3 H2(g) ↔ 2 NH3(g) is at equilibrium. An experimenter injects a small amount of N2 into the reaction chamber. What happens to the forward reaction rate right after the injection of the N2? What happens to the reverse reaction rate right ...
  82. AP Chemistry

    Consider the following reaction: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) 0.103 g of Zn is combined with enough HCl to make 50.0 mL of solution in a coffee-cup calorimeter. As all of the Zn reacts, the temperature of the solution increases from 22.5°C to 23.7°C. Find ΔHrxn (...
  83. Chemistry

    The reaction 2NO(g) + 2H2(g) N2(g) + 2H2O(g) goes twice as fast when the concentration of H2 is doubled but four times as fast when the concentration of NO is doubled. What is the overall reaction order? I did it like this: k[NO]^m[H2]^n 2r=[H2]^n, meaning that the order for ...
  84. Chemistry - Combustion Method

    This question is confusing me the way its presented and also is relating it to the combustion method that is used to analyze carbon and hydrogen. It can be used to give percent N. It says a sample of a compound that weighs 8.75 mg gave 1.59 mL of N2 at 25 degrees Celsius and ...
  85. Chemistry

    A solution was made by dissolving 62.07 grams of a compound in 500g of water. The compound was not ionic. The freezing point of the solution was measured and found to be -1.86 degrees celsius. Using the Kf value in your textbook, the molar mass of this conpound can be ...
  86. chemistry

    Hgl2(s)=2NaNOg(ag) a combination,decomposition,single replacement or double replacement
  87. Compound math

    (Future Value) Suppose you invest $8000 into an account that pays an annual interest rate of 6.2%. How much is in the account after 30 years if a. simple interest is compound monthly? b. interest is compounded monthly? c. interest is compounded daily?
  88. english 1

    1. which of these is a complete sentence ? ( 1point ) A. although the weather is sometimes warm in early march b, forecasters predicted six more weeks of winter this year** c, the old saying “ in like a lion , out like a lamb “ with practice both kendra and jason mastered ...
  89. English

    Indentify the choice that best describes the scentences. When I arrived at the office, I found that the principle was out; apparently, he had contracted the same sickness as half the school. A- simple B- compound C- complex D- compound complex* I'm pretty sure the answer is d...
  90. Chemistry

    How do you find out the number of moles in a certain amount of grams of a element or compound. After that, how do you find the number of atoms/molecules in that element or compound. Thanks grams/molar mass = # mols There are 6.02 x 10^23 molecules in a mol of anything.
  91. chemistry

    wen determining the formula for a compound its important to no the valance no of each element suppose element a has a valance no of 3 an element b has a valence no of 2 if the two elements combine then wen writing the formula for the resulting compound wat subscript no will be...
  92. chemistry

    The concentration of a certain ionic compound in aqueous solution is 0.186mol/L . It is only solute in the solution. The concentration of pottassium ions in the same solution ia 0.558mol/L. Explain why the concentrations of the ions in the solution are different. What might ...
  93. Geometry Question

    B is the midpoint of segment AC and D is the midpoint of segment CE. Solve for x, given BD=3x+5 and AE=4x+20. Sorry I couldn't get the link for the picture but, the diagram is a picture of a triangle with a C at the top, and A and E on the bottom angles, with segment BD going ...
  94. maths

    expand each of the following using the compound angle formulae a. cos(A - B) b. sin(alpher + alpher) c. cos(alpher + 70°)
  95. Chemistry

    The equilibrium constant for the reaction of bromine and chlorine to form bromine chloride under certain conditions is 4.7x10-2. Cl2(g) + Br2(g) --> 2BrCl(g) K= 4.7 x 10-2 What is the equilibrium constant for the following reaction under the same conditions? 1/2 Cl2(g) + 1/...
  96. English

    Complete the following sentence with a preposition that shows a time relationship. Owen will need to take a nap _______ going to the concert. A. Before B. In place of C. Instead of D. Because of I think its A?
  97. Chemistry

    Does the reaction between CO2(g) + Mg(OH)2(aq) produce MgCO3(s) + H2O(l) or Mg(HCO3)2 ??? Normally, Mg(CO3)2 but I suspect an excess of CO2 will produce the bicarbonate. For example, CO2(g) + Ca(OH)2(aq) ==> CaCO3(s) + H2O(l) and that is often done by exhaling into a flask ...
  98. chemistry

    The chemical substance in natural gas is a compound called methane. Its molecules are composed of carbon and hydrogen and each molecule contains four atoms of hydrogen and one atom of carbon. In this compound, 0.33597g of hydrogen is combined with 1g of C12. Use this ...
  99. chemistry help !!!!!!!!!!!!!!!!

    Benzoic acid react with NH2 group Draw the product of this reaction, name the new functional group produced, state the type of reaction that has occurred, name any other products of the reaction and briefly explain how you arrived at your answer.( one or two sentences.)
  100. chemistry

    How many grams of aluminum is produced from the decomposition of 34grams of aluminum oxide
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