a certain reaction has the following generaln form

74,460 results, page 19

  1. Chemistry

    The efficacy of certain drugs is affected by pH. Many drugs are absorbed into the blood through cells lining the stomach or the small intestine by direct diffusion across the plasma membrane. Since the interior of the plasma membrane is hydrophobic, uncharged molecules cross ...
  2. chemical equilibrium

    At a certain temperature, Kc = 0.914 for the reaction NO2 (g) + NO (g) <----> N2O (g) + O2 (g) Equal amounts of NO and NO2 are to be placed in a 5.00 L container until the N2O concentration at equilibrium is 0.050 M. How many moles of NO and NO2 must be placed in the ...
  3. Chemistry

    The decompostion of dinitrogen pentoxide has been studied in carbon tetrachloride (CCl4) at a certain temperature: 2N2O5→4NO2+O2 [N2O5] Inital rate (M/s) 0.92 ...... 0.95x10^-5 1.23 ...... 1.20x10^-5 1.79 ...... 1.93x10^-5 2.00 ...... 2.10x10^-5 2.21 ...... 2.26x10^-5 ...
  4. 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...
  5. chemistry

    If 7.50 grams 1-butene reacts with 25.0 g oxygen how many grams of carbon dioxide will form? Which reactant is limiting? How many grams of excess reactant will be left at the end of the reaction?
  6. 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 ...
  7. 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 ...
  8. 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
  9. Chemistry

    Nitrogen and hydrogen gases react to form ammonis gas as follows: N2(g)+3H2(g)-->2NH3(g) At a certain temperature and pressure, 1.2L of N2 reacts with 3.6L of H2. If all the N2 and H2 are consumed, what volume of NH3 at the same temperature and pressure will be produced? I'...
  10. 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...
  11. chem

    reaction order I know the form is r=k(A)a(B)b (a, b are exponents) and I know a and b depend on the concentration, but how do i know the number a and b. can you please explain in your own words instead of giving me websites because i look and i'm still confused I also tried to...
  12. ap chem

    At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2 SO2(g) + O2(g) *) 2 SO3(g) What concentration of SO3 would be in equilibrium with 0.250moles of SO2 and 0.578 moles of O2 in a 1.00 liter container at this temperature? Note: These latter moles ...
  13. ap chemistry

    At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2 SO2(g) + O2(g) *) 2 SO3(g) What concentration of SO3 would be in equilibrium with 0.250moles of SO2 and 0.853 moles of O2 in a 1.00 liter container at this temperature? Note: These latter moles ...
  14. 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 ...
  15. CHEM

    Could you please tell me if these are right? Write an equation for the following reactions. Write the correct formulas of the reactants and products. Then correctly balance each equation. A.) Potassium and oxygen gas react to form potassium oxide. I got K+O2=KO2 B.) Sodium and...
  16. Chemistry

    1. The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrofluoric acid. F2(g) + NH3(g) „³ N2F4(g) + HF(g) a. If you have 66.5g NH3, how many grams of F2 are required for complete reaction? b. How many grams of NH3 are required to produce 4.65g HF? ...
  17. Grammar Advisor

    I just cannot figure out if these answers are correct or not. Can you please help me? 78. If the sound system hadn’t failed, last night’s show would have been better. This is a correct sentence using the 1st conditional form. x This is a correct sentence using the 2nd ...
  18. 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. ...
  19. 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. ...
  20. 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 ...
  21. 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...
  22. 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....
  23. 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
  24. 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 ...
  25. 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...
  26. 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 ...
  27. Algebra

    What is 2x=7? Is it a standard form, or slope-intercept form, or not a linear equation? Can you explain what a standard form and a slope-intercept form is PLEASE!? The standard form for a straight line is y=mx+b where m is the slope and b is the y intercept. Therefore, an ...
  28. 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 (...
  29. 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 ...
  30. Math, 7th grade

    We're learning Expanded, Multiplicative, Exponential and Algebraic form. I don't know how to do Algebraic form. The question says What is $2,367.00 in Algebraic form?
  31. 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.)
  32. economics

    The cost function for an enterprise has the following form: TC = 10L + 20K The production function has the form: 4 ln L + 10 K 1/2 a. Derive the mathematical forms of the marginal and average products of capital and labor. How is the marginal product of labor affected by ...
  33. chemistry

    Which of the following statements about alkali metals is true? alkali metals have full valence shells alkali metals form 1- cations alkali metals are very reactive alkali metals form 2- cations please help
  34. chemistry

    Use the following pair of reduction half-reactions to design a galvanic cell. Then write in the proper coefficient for each of the species involved in the overall reaction. Water molecules and protons are not shown in the half-reactions, but may be needed in the overall ...
  35. chemistry

    The reaction between 0.0272 g of Mg with an excess of water was carried out in an ice calorimeter. The volume of water decreased by 0.19 mL during the reaction. a) Write the equation that occurs. Is it a redox? b) Calculate the enthalpy of reaction? i have no clue how to ...
  36. Math

    Write each of the following ratios in simplest form. The ratio 5 3/5 to 2 1/10
  37. mathematics

    deduce the completed square form for the following 2x^2+16x-10
  38. Math

    Write each of the following ratios in simplest form. The ratio of 5 3/5 to 2 1/10
  39. Algebra 2

    How would I put the following equations into y=mx+b form? x+y=4 -4x+y=9
  40. english

    Intelligence of the turkey, write the following in possessive form
  41. math

    write the following in compact form using factorials a. 38*37*36*35*34*33 b. 14!/19*18*17*16*15
  42. math

    convert each of the following repeating decimals to a/b form, where a and b are integers and b is not 0 2.34 and 0.03
  43. math

    Give the component form of the resultant vector in the following. u = (10, 5) -3u = ?
  44. Algebra

    write the following in standard form: slope= 2/3 y- intercept= 3
  45. Algebra 1

    Rewrite the following equation in slope-intercept form x-5y=5
  46. algebra

    Which equivalent form following equation 2x-3y=3 need help doing test thank you
  47. Algebra

    What is the factored form of the following expression? x2 – 4xy – 21y2
  48. geometry

    Rewrite the following in If-then form: the product of x and y is an odd multiple of 5
  49. math

    Which of the following side lengths could combine to form a triangle? a. 17, 13, 2 b. 15, 18, 24 c. 5, 9, 14 d. 16, 32, 16
  50. Math

    Write the following equation in slope intercept form 3x + 4y = 12
  51. math

    which of the following side lengths could combine to form a triangle?
  52. algebra 1

    what is the simplified form of the following expression -28st over -4s -7t 7t** -7s 7s
  53. chemistry

    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...
  54. Chemistry

    Use the following information to identify element A and come pound 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 temperature of 15°C. ...
  55. math

    Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter your answer with the correct number of significant figures. 885.75 g + 10.151 g - 25.50 g Calculate the value of the following in exponential ...
  56. chemistry

    I need help with Part 2 Part 1. Record the following for each of the three experiments: (a) Mass of the empty calorimeter (g): 11.600 g (b) Initial temperature in the calorimeter (C): 21.00 (c) Maximum temperature in the calorimeter from the reaction (C): 29.27, 34.78, 40.29 (...
  57. chemistry

    For combustion of 10 grams of C4H10 excess of O2, You are obtained 25 grams of CO2 according to the reaction (to balance): C4H10+ O2→ CO2+ H2O Calculate the reaction yield of the reaction. please,could anyone help me to solve this problem.
  58. Chemistry

    Chemistry help!!!!!!!!!!!? Make a chart and define the following reactions using the following 3 examples methods. Wrie out in letter(a,b,c), Symbol(Na,Cl,O) An name form(sodium,chloride,oxygen) A direct combination b decompition C single replacement and D double replacement
  59. AP Chem

    How many mL of 3.84 M HCL are required to consume 4.12g of Zinc in the following reaction? Zn(s) + 2HCL(aq)----> ZnCl2(aq) + H2(g)
  60. chem

    what substance is oxidized in following reaction 4 HCl+MnO2 and Cl2+2H2O+MnCl2
  61. Chemistry

    determine the redox reaction represented by the following cell notation Mg Mg2 Cu2 Cu
  62. Chem

    What is the enthalpy for the following reaction? overall: C2H4+H2O--->C2H5OH is -1411kJ correct??
  63. Chemistry

    A piece of cadmium is placed in a solution in which [Cd^2+]=[Sn^2+]=1.00M. Will the following reaction proceed spontaneously? Cd(s)+Sn^2+(aq)-->Cd^2+(aq)+Sn(s)
  64. chemistry

    Consider the following reaction Al(OH)3 + 3HCL ____>ALCL3 How many milliltres of 0.8 M HCL will react with 2g of AL(OH)3 ??
  65. College Chemistry

    Estimate the enthalpy change for the following reaction OH(g)+CH4(g)==>CH3(g)+H2O(g)
  66. chemistry

    What is Delta H rxn for the following chemical reaction? H2O(l) + CCl4(l)-> COCl2(g) + 2HCl(g)
  67. science

    which of the following does not affect reaction rate balancin, temperature surface area or concentration?
  68. chemistry

    what are the products of the following reaction. CH3COOH+CH3CH2OH---> (there is an H+ above the dotted arrow line)
  69. Chemistry

    Find delta G knot for the following reaction: 2Ch3OH(l) + 3O2(g) --> 2CO2(g) + 4H2O(g)
  70. chemistry

    complete the following double displacement reaction and indicate the states: KCl+AgNO3=
  71. chemistry

    Calculate the standard reduction potential for the reaction of Cu(III) to Cu(II) Use the following data: 1) Cu^+3 + 2e^- -> Cu^+, E°1 = 1.28 V 2) Cu^+2 + e^- -> Cu^+, E°2 = 0.15 V 3) Cu^+2 + 2e^- -> Cu(s), E°3 = 0.34 V 4) Cu^+ + e^- -> Cu(s), E°4 = 0.52 V
  72. chemistry

    consider the following equilibrum reaction: 2NO yield N2 + O2. Take:delta H=-18.0KJ/M
  73. chemistry

    consider the following equilibrum reaction: 2NO yield N2 + O2. Take:delta H=-18.0KJ/M
  74. Chemistry

    For the following battery: Cd(s) | CdCl2(aq) || Cl–(aq) | Cl2(l) | C(s) Write the reduction half reaction for the C(s) electrode.
  75. Chemistry

    The equilibrium constant for the following reaction is 7.2 x 10-10. What is the [H+] in a solution 1.0 M of this acid? HCN + H2O --> H3O+ + CN-
  76. Nuclear 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
  77. Chemistry

    Given the following reaction at equilibrium, if Kc = 1.90 x 1019 at 25.0 °C, Kp = __________. H2 (g) + Br2 (g) ↔ 2 HBr (g)
  78. Chemistry

    What coefficient of H+ balances the atoms in the following half-reaction? H^+ + MnO2 Mn^2+ + H2O A.1 B.2 C.3 D.4 I think this is B...?
  79. CHEMISTRY HELP !!!!

    Complete the following fission reaction 1/0 n + 235/92 U ---> 236/92 Te + _____ +2 (1/2)n a) 97/40 Zr b) 99/40 Zr c) 99/38 Sr d) 95/42 Mo e) 96/41 Y Answer is A or B not sure
  80. chemistry

    What is the value of A in the following nuclear reaction? 212/84Po→208/82Pb+A/ZX
  81. chemistry

    Determine if the following reaction is spontaneous under standard conditions. Zn(s) + 4 CN¡V(aq) + Ag2CrO4(s) „³ Zn(CN)42¡V(aq) + 2 Ag(s) + CrO42¡V(aq)
  82. Chemistry

    Balance the following redox reaction in basic solution. H2(g)+Fe3+(aq) ---> H2O(l)+Fe2+(aq)
  83. Chemistry

    Balance the following half-reaction under basic conditions. NO3^− → NH3
  84. Chemistry

    Which of the following statements is incorrect concerning the thermochemical equation below? 2SO3(g)  2SO2(g) + O2(g); H° = 198 kJ a. The enthalpy of the reactants exceeds that of the products. b. The reaction is endothermic. c. For the reaction 2SO2(g) + O2(g...
  85. Chemistry

    Which of the following statements is incorrect concerning the thermochemical equation below? 2SO3(g)  2SO2(g) + O2(g); H° = 198 kJ a. The enthalpy of the reactants exceeds that of the products. b. The reaction is endothermic. c. For the reaction 2SO2(g) + O2(g...
  86. Reaction Kinetics

    I have been studying a journal, and their objective is to find the ignition temperature, which can shift a reaction from being kinetics-controlled to being diffusion-controlled. What is the advantage of a reaction being diffusion-controlled over a reaction being kinetics-...
  87. CHEM

    Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2Al(s) + 3Cl2(g) -> 2AlCl3(s) You are given 19.0g of aluminum and 24.0g of chlorine gas. a)If you had excess chlorine, how many moles of of aluminum chloride could be produced from 19.0g...
  88. Chemistry

    Which of the following is NOT true for ΔGrxn? A.) If ΔG°rxn > 0, the reaction is spontaneous in the forward direction. B.) If Q = 1, then ΔGrxn = ΔG°rxn.If ΔG°rxn = 0, the reaction is spontaneous in the reverse direction. C.) If ΔG°rxn >...
  89. Grammar

    Is "to" in the following sentence a preposition or an adverb? "The speaker in "We Never Know How High We Are" believes people can rise to a challenge." In my opinion, I think it is an adverb. However, I am not entirely certain.
  90. Chemistry

    7.0 mL of 0.64 M HBr reacts with 38 mL of 0.39 M KOH. 1) What are the moles of acid before the reaction? 2) What are the moles of base before the reaction? 3) What is the limiting reagent? 4) How many moles of excess reagent are there after the reaction? 5) what is the ...
  91. chemistry

    Given overall reaction: P4 + 10Cl2 ---> 4PCl5 Delta H for the reaction = ? PCl5 -----> PCl3 + Cl2 Delta H = +157 kJ P4 + 6Cl2 ----> 4PCl3 Delta H = -1207 kJ Calculate the Delta H for the overall reaction.
  92. Chemistry

    For a reaction N2+O2=2NO If Kc=10-30 at 25°C One Can predict with solid reason? (1) More NO is formed (2) The forward reaction goes to completion (3) The backward reaction goes to completion (4) More reactant can consumed
  93. Chemistry

    In a chain mechanism, a reaction in which two free radicals combine to form a stable molecule would be called the A) initiation step B) termination step C) propagation step D) inhibition step E) branching step
  94. math

    write each ratio in simplest form..1) 2 yards to 15 feet.2) in a survey,9 out of 10 doctors recommended a certain medicine.if 80 doctors were surveyed,how many doctors recommended the medicine? 3)find each unit rate.travel 804 miles in 16 hours.4) the mass of a diamond is 1.76...
  95. Chemistry

    A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 69.8 kJ of heat. Before the reaction, the volume of the system was 8.80 L . After the reaction, the volume of the system was 2.80 L . Calculate the total internal energy change, change in U , in kilojoules.
  96. Chemistry

    Please check the following. 1. What compound is sodium sulfite? My answer:Na2SO3 2. Which element is a noble gas? a. N2 b. Cl2 c. Xe d. I2 My answer: c 3. Which element is most likely to form a cation with a 2+ charge? a. S b. P c. Be d. Al My answer: c 4. Which species ...
  97. Chemistry

    Please check the following. 1. What compound is sodium sulfite? My answer:Na2SO3 2. Which element is a noble gas? a. N2 b. Cl2 c. Xe d. I2 My answer: c 3. Which element is most likely to form a cation with a 2+ charge? a. S b. P c. Be d. Al My answer: c 4. Which species ...
  98. trig

    find the distance from the orgin to each of the following points .If your answer is irrational,leave it in radical form. a.(3,-7) b.(-4,6) c.(0,5) d.(6,0) e.(-2,-4) f.(0,0) my answers : what do they mean by leave it radical form a.sqrt 58 b.Sqrt 52 = 2sqrt 13 or should i just ...
  99. chemistry

    One of the steps in the Ostwald process for the production of nitric acid involves oxidation of ammonia. 4NH3 (aq) + 5O2 (g) <---> 4NO (g) + 6H2O (g), Delta H= -905kJ a) State the reaction conditions that favour the production of nitrogen monoxide. b) A rhodium/platinum ...
  100. chemistry

    Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 and H2 in a closed container as illustrated below. Assuming the reaction goes to completion, draw a representation of the product mixture. Explain how you arrived at this representation.
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