1. CHEMISTRY

    The first-order reaction, SO2Cl2 ¨ SO2 + Cl2, has a rate constant equal to 2.20 ~ 10-5 s-1 at 593 K. What percentage of the initial amount of SO2Cl2 will remain after 6.00 hours?

    asked by JOSEPH on September 27, 2010
  2. General chemistry

    The first-order reaction, SO2Cl2---> SO2 + Cl2, has a rate constant equal to 2.20 x 10^-5 s^-1 at 593 K. What percentage of the initial amount SO2Cl2 will remain after 6.00 hours?

    asked by hahaha on April 26, 2010
  3. physics

    to start a nuclear fusion reaction, two hydrogen atoms of charge 1.602x10^-19 and mass 1.67x10^-27kg must be fired at each other. If each particle has an initial velocity of 2.7x10^6m/s when released, what is their minimum seperation?

    asked by lindsay on June 11, 2012
  4. Chemistry

    If two titrations were completed were completed: 1) the titration of HCl with Na(OH) 2)the titration of HCl with Ba(OH)2 (the concentrations of acid and base for both titrations are the same) How would the titration curves of each solution be different? I

    asked by Niki on March 7, 2012
  5. Chemistry

    Methyl amine is a weak base with a pKb=3.35. Consider the titration of 30.0mL of .030M of Methyl amine with 0.025M HCl. a) Write the appropriate equation for the reaction. b) Calculate K for the reaction in part (a). c) Calculate pH of the initial methyl

    asked by Ed on April 27, 2016
  6. Science-Chemistry

    Methyl amine is a weak base with a pKb=3.35. Consider the titration of 30.0mL of .030M of Methyl amine with 0.025M HCl. a) Write the appropriate equation for the reaction. b) Calculate K for the reaction in part (a). c) Calculate pH of the initial methyl

    asked by Joe on April 19, 2013
  7. Chemistry

    Balance the following in basic solution. NO2− + H2 → N2O Find Oxidation reaction, Reduction reaction, and Net reaction

    asked by Anonymous on April 10, 2018
  8. Chemistry

    Consider the following reaction: H2(g) + I2(s) ---> 2HI(g) TriangleH = 51.9 kj (enthalpy) Calculate the standard enthalpies of reaction for the following reaction: 6HI(g) ---> 3H2(g) + 3I2(s) Thanks!

    asked by Sandy on April 28, 2012
  9. Chemistry

    The reaction for my lab is Mg(s)+2HCl(aq)--> MgCl2(aq)+H2(g) I need to find the pressure of the hydrogen gas. Initial Pressure = 0.98692 atm Total Pressure = 1.64816 atm I don't know if I calculated the pressure of hydrogen gas correctly. I used the

    asked by Zach on July 15, 2012
  10. chemistry- thank you

    If the ÄH of reaction for the following 2ZnS (s) + O 2(g) = 2ZnO (s) + 2S (s) is -290 kJ, then what is the ÄH of reaction for the following reaction: ZnO (s) + S (s) = ZnS (s) + 1/2O 2(g)? Would i flip the first equation? then after that i am lost

    asked by nalleli on October 18, 2010
  11. chemistry

    the chapter is about chemical kinetics Reaction mechanisms: What does it mean by mechanism of a reaction? What is an elementary step? what is the molecularity of a reaction?

    asked by Jin on July 15, 2010
  12. chemistry

    1-Dinitrogen tetroxide (N2O4) dissociates according to the equation: N2O4 ⇌ 2NO2 An equilibrium reaction mixture at 25 ºC was found to have the partial pressure of N2O4 as 72 kPa whilst the partial pressure of nitrogen dioxide (NO2) was 29 kPa.

    asked by John on July 27, 2014
  13. chem

    Can someone check this for me? Predict which reactions are spontaneous: a) Zn(s) + 2H+(aq) --> Zn+2(aq) + H2(g) b) CaCO3(s) + 2H2O(l) --> Ca(OH)2(s) + H2CO3(aq) c) CH4(g) + O2(g) --> CO2(g) + 2H2O(g) d) Ag+(aq) + Cl-(aq) --> AgCl(s) I said a) and c) were

    asked by Chris on March 5, 2007
  14. College Chemistry

    Zinc, copper, lead, and mercury ions are toxic to Atlantic salmon at concentrations of 6.42 times 10 to the -2 mM, 7.16 times 10 to the -3 mM, 0.965 mM, and 5.00 times 10 to the -2 mM, respectively. What are the corresponding concentration is milligrams

    asked by Bekah on October 2, 2011
  15. Chem

    Zinc, copper, lead, and mercury ions are toxic to Atlantic salmon at concentrations of 6.42 times 10 to the -2 mM, 7.16 times 10 to the -3 mM, 0.965 mM, and 5.00 times 10 to the -2 mM, respectively. What are the corresponding concentration is milligrams

    asked by HELP on October 2, 2012
  16. chemistry

    Welders often use acetylene torches heat up the metal. The reaction is: C2H2(g) + 2.5O2(g) = 2CO2(g) + H2O(g) Calculate the ΔH of reaction for this reaction.

    asked by danny 16 on February 1, 2015
  17. chemistry

    If a particular reaction absorbs 252 kJ of heat while doing 105 kJ of work at constant pressure. What are the ΔE and ΔH for values for the reaction? Is the reaction endothermic or exothermic?

    asked by Mai on April 12, 2014
  18. chemistry

    Given this data in a study on how the rate of a reaction was affected by the concentration of the reactants Initial Rate, RUN # A], M [B, M C], M mol L-1 s-1 1 0.200 0.100 0.600 5.00 2 0.200 0.400 0.400 80.0 3 0.600 0.100 0.200 15.0 4 0.200 0.100 0.200

    asked by senior pup on February 18, 2012
  19. ORGANIC CHEM LAB

    In a hypochlorite oxidation reaction, cyclohexanol plus NaOCL & aq HOAc results in cyclohexanone. The intermediate in this reaction in ROCl where R = cyclohexyl. a.) Show how this intermediate decomposes to product in a E2-like reaction even at pH = 4-5;

    asked by Anonymous on September 27, 2011
  20. organic chemistry

    What is the complete reaction mechanism for the reaction between butanone and methylamine (CH3NH2) with the reaction buffered at a pH of 3.5 and heated.

    asked by Jenn on July 28, 2014
  21. Chem

    Use the reaction that occurs when magnesium burns in oxygen to show how a reaction might be included in more than one category of reaction.

    asked by Bubba on November 26, 2008
  22. Chemistry

    a certain first order decomposition reaction has a half-life of 15.0 minutes. What is the rate constant for this reaction? what is the time it will take for the reaction to reach the 10% completion point?

    asked by Josh on October 25, 2012
  23. biochemistry

    You have a 100 mMoles of A in the 10 ml reaction mixture which contains buffer and enzyme. The reaction is allowed to reach equilibrium at 25 o C and you measure the concentration of B as 10 mM. What is the delta Go' for the reaction in KJ.

    asked by Sarah on July 25, 2012
  24. chemistry

    Consider a light-sensitive reaction. What energy, in joules per photon, is needed to drive the reaction if delta H of the reaction is equal to 307kJ/mol?

    asked by kelsie on October 18, 2008
  25. chemistry

    Write the reactants and products of the reaction between zinc and oxygen. Include the half-reactions. What type of reaction is this? I know the reaction is 2Zn + O2 -> 2ZnO I am not really sure where to go from here.

    asked by Anonymous on February 28, 2017
  26. AP Chemistry

    DrBob222 thank you for your previous response. I am reposting the entire question. Two different 1.2 L buffered solutions were prepared using HOBr and LiOBr. Both buffered solutions had a pH of 5.2 at 25C. After 0.17 mols of HI were added to each of the

    asked by KorieBird on March 13, 2018
  27. phyisics

    an orangutan throws a coconut vertically upward at the foot of a clif 40 m high while his mate simulaneously drops another coconut from the top of the clif. the two coconuts collide at an altitude of 20 m what is the initial velocity of the coconut that

    asked by Carolina on October 12, 2009
  28. Chemistry

    Consider the following reaction at constant P. Use the information here to determine the value of ΔSsurr at 398 K. Predict whether or not this reaction will be spontaneous at this temperature. 4 NH3(g) + 3 O2(g) → 2 N2(g) + 6 H2O(g); ΔH = -1267 kJ

    asked by Jeff on May 6, 2014
  29. Rate Constant - My Work is Incorrect

    Hi! I am stuck with this question and I would like to know what I did wrong: Given that the initial rate constant is 0.0160 s-1 at an initial temperature of 25 degrees C, what would the rate constant be at a temperature of 130 degrees C for the same

    asked by Amy on February 3, 2013
  30. Chemistry

    If the slope of line for the kinetic data shown in the graph is -0.0952 and the initial concentration of reactant is 0.25 M, what is the rate of the reaction? Graph: . -2.0 . . -3.0 . ln[A] . -4.0 -5.0 0 5 10 15 20 Time (seconds) a. -2.63 s-1 b.-4.0 s-1

    asked by Ramon on March 23, 2018
  31. science

    A chemist mixes two liquids together. The reaction produces a gas and a solid. According to the law of conservation of mass, what should the chemist observe when she compares the total masses of the substances before and after the reaction?  (1 point)

    asked by Check my answer on May 11, 2014
  32. CHEMISTRY

    i need help with this pre lab question:| plse help me! teh following data were obained for the reaction 2ClO2(aq)+ 2OH^-(aq) -> ClO3^-(aq) + ClO2^-(aq) +H2O (l) Where rate = delta[ClO2]/ delta t (mol/L) (mol/L) (mol/L*s) [ClO2]0 [OH-]0 Initial rate 0.0500

    asked by ram i need major help please!!! on February 22, 2009
  33. chemistry

    The reaction between 0.045 g of calcium with an excess of water was carried out in an ice calorimeter as used in this lab. The volume of water in the calorimeter decreased by 0.18 mL during the reaction a) Write the equation for the reaction which occurs.

    asked by Anonymous on November 10, 2008
  34. Chemistry

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

    asked by Question on January 28, 2007
  35. science

    2Al+3H2SO4--> Al2(SO4)3+3H2 a.)determine the oxidation number of each element in both the reaction and products of this oxidation-reduction reaction of aluminum and sulfuric acid. b.) what element is oxidized in this reaction? c.) what element reduces in

    asked by michael on May 3, 2011
  36. Chemistry

    A reaction is said to be diffusion controlled when it occurs as fast as the reactants diffuse through the solution. The following is an example of a diffusion controlled reaction. The rate constant for this reaction is 1.4x1011 M-1s-1 at 25oC and the

    asked by Kevin on May 20, 2009
  37. Chemistry

    A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation: 2H2S(g) 2H(g) + S2(g) (a) the reaction quotient intially (b) the order of concentration of all three components at equilibrium without using

    asked by Coryn on May 6, 2012
  38. Chemistry

    1. What would be the effect on the reaction rate if the [O2] were doubled? 2. What would be the effect on the reaction rate if the pressure on the reaction were doubled? 3. Assume the reaction is reversible and at equilibrium. What shifts in the

    asked by Jojo on March 25, 2015
  39. Chemistry

    Question asking about how enzymes affect the rate of a reaction. Check all that apply 1. They shift the reaction equilibrium towards the products. 2. They increase the concentration of the reactants. 3. They lower the activation energy of the reaction. 4.

    asked by Patrick on February 20, 2013
  40. chemistry

    For the equilibrium below at 400 K, Kc = 7.0. Br2(g) + Cl2(g) equilibrium reaction arrow 2 BrCl(g) If 0.85 mol of Br2 and 0.85 mol Cl2 are introduced into a 2.0 L-container at 400. K, what will be the equilibrium concentrations of Br2, Cl2 and BrCl? I

    asked by me on February 3, 2015
  41. chemistry

    I would also like to see Nathaniels work solved:P I have a similar question If 1.00 mol each of carbon dioxide and hydrogen is initially injected into a 10.0-L reaction chamber at 986 degrees Celsius, what would be the concentrations of each entity at

    asked by Jessica on April 1, 2008
  42. Chemistry

    Before a chemical reaction reaches equilibrium, A. the reaction rates of the reactants and products increase. B. the reaction rate of the reactants increases and the reaction rate of the products decreases. C. the reaction rates of the reactants and

    asked by soco on August 10, 2015
  43. chemistry

    Calculate the molar enthalpy change for this reaction: HCl(aq 1.00M) + NaOH -> NaCl(aq,.500M)+ H2O Initial temp: 22.15 degrees Celsius Extrapolated temp: 25.87 degrees Celsius DT: 3.72 degrees Celsius Notes: Calculate the enthalpy change for this reaction.

    asked by Failure on November 10, 2015
  44. chemistry

    Gaseous hydrazine reacts with a gas X to form the gases nitrogen and HX by way of the following reaction: NH (g)+2X (g)=N (g)+4HX(g) The enthalpy change for Reaction 1 is −1180 kJ mol−1. Sketch or try and layout a fully labelled diagram showing how the

    asked by James Holland on January 25, 2011
  45. Chemistry

    What's the difference between the pressure of a system and the partial pressures in relation to Le Chatelier's principles? I know that when the pressure of the system is increased, it goes to the side with less moles/particles and when decreased it will go

    asked by Sunny on July 13, 2017
  46. science

    12. Aluminum in blood plasma was shown to undergo a first order elimination reaction with a half-life of 160 days. If the initial concentration was 8.2 µg/L, how long will it take for the concentration to drop to 2.5 µg/L?

    asked by dan on February 14, 2011
  47. chemistry

    The reaction A -> B + C is 1st order w/ respet to A. It's rate const k is equal to 0.343 M/s at 273K. The initial concentration of A was 0.399 M. Calculate the concentration of B after 0.185 secs have passed.

    asked by bernard on February 19, 2012
  48. Physics

    Givent the initial velocity of the car, the driver's reaction time, and the coefficient of friction,find the total distance required far a car to stop.

    asked by TC on February 23, 2012
  49. Chemistry

    A mixture initially contains A,B, and C in the following concentrations: A1 = 0.300 M, B1 = 1.15M, and C1 = 0.350 M. The following reaction occurs and equilibrium is established: A+2B C At equilibrium, A2 = 0.190M and C2 = 0.460M. Calculate the value of

    asked by Saira on February 6, 2009
  50. CHEM

    4. The decomposition of phosphine, a very toxic gas, forms phosphorus and hydrogen in the following reaction: 4PH3 (g) P4 (g) + 6H2 (g) (a) Express the rate of reaction with respect to each of the reactants and prducts (b) If the instanteneous rate of the

    asked by N.Z on June 22, 2015
  51. chemistry

    In the fifth reaction of Glycolosis, G3P dehydrogenase converts glyceraldehydes-3-phosphate into glycerate-1,3-bisphosphate. In order to make the reaction spontaneous at biological conditions it must be coupled to the reduction of NAD+. a) DG° for the

    asked by kat on February 12, 2009
  52. Chemistry(Thank you for helping)

    1) Given this data in a study on how the rate of a reaction was affected by the concentration of the reactants Initial Rate, RUN # (A), M (B), M (C), M mol L-1 s-1 1 0.200 0.100 0.600 5.00 2 0.200 0.400 0.400 80.0 3 0.600 0.100 0.200 15.0 4 0.200 0.100

    asked by Hannah on February 21, 2012
  53. Chemistry(Please check)

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

    asked by Hannah on February 20, 2012
  54. chemistry

    Kc for the decomposition of ammonium hydrogen sulfide is 1.8 x 10-4 at 15oC. a. When 5.00 grams of the pure salt decomposes in a sealed 3.0 L flask at 15oC, what are the equilibrium concentrations of NH3 and H2S? b. What are the equilibrium concentrations

    asked by mattie on May 1, 2014
  55. Chemistry

    At 627ºC, sulfur dioxide and oxygen gases combine to form sulfur trioxide gas. At equilibrium, the concentrations for sulfur dioxide, oxygen, and sulfur trioxide gases are .0060M, .0054M, and .0032M, respectively. a. Write a balanced equation for the

    asked by dauntedorange on February 28, 2013
  56. Chemistry

    In the equilibrium system CH3COOH(aq) + H2O(l) —> — H3O+ CH3COO-(aq) .

    asked by L on January 21, 2018
  57. Chemistry

    I don't know how to reply to an answer. First of all thank you! For the question I just asked about the titration curves. Would that mean that titrating with barium hydroxide would take half the volume that is used when titrating with sodium hydroxide? Oh

    asked by Niki on March 7, 2012
  58. AP chemistry! Please Help

    Consider the reaction of peroxydisulfate ion (S2O82-) with iodide ion (I -) in aqueous solution. S2O82-(aq) + 3 I -(aq) ¨ 2 SO42-(aq) + I3-(aq) At a particular temperature, the rate of disappearance of S2O82- varies with reactant concentrations in the

    asked by Kaanha on January 6, 2012
  59. Chemistry

    Consider the following reaction: 2NO(g)+O2(g)→2NO2(g) Estimate ΔG∘ for this reaction at each of the following temperatures and predict whether or not the reaction will be spontaneous. (Assume that ΔH∘ and ΔS∘ do not change too much within the

    asked by Ashley on April 23, 2015
  60. science

    a) calculate the heat of reaction, in kilojoules, for the reaction: 2NO2(g) + 3H2(g)--->2NH3(g) + 2O2(g) b) is the reaction endothermic or exothermic? how can you tell? I will be happy to critique your work on this. You will have to look up the heats of

    asked by michelle on January 19, 2007
  61. Chemistry

    What kind of reaction is this (redox, precipitation, acid-base, or complex ion formation reaction)? 1. 3 Ca(s) + 2 Al^3+(aq) -> 3 Ca^2+(aq) + 2 Al(s) 2. LiHCO3(s) + heat -> Li2CO3(s) + CO2(g) + H2O(g) Complete the reaction: Ni(s) + 2 Na^+(aq) -> ?

    asked by Fred on October 21, 2013
  62. Chemistry(Urgent, please respond, thanks!!)

    1) For the reaction system, 2 SO2(g) + O2(g) = 2 SO3(g), Kc has a value of 4.62 at 450.0 K (Kelvin). A system, at equilibrium has the following concentrations: (SO3) = 0.254 M; (O2) = 0.00855 M. What is the equilibrium concentration of SO2? Is set this up

    asked by Hannah on March 15, 2012
  63. Biology

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

    asked by Jello on September 16, 2015
  64. biology

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

    asked by hannah on November 7, 2013
  65. chemmm helppppppppp

    Consider the following reaction: 2N2O(g)--->2N2(g) + O2(g) a. express the rate of the reaction with respect to each of the reactants and products. b.In the first 10.0 s of the reaction, .018 mol of O2 is produced in a reaction vessel with a volume of

    asked by Natash on February 1, 2009
  66. Chemistry/lab math

    For an AST determination, 0.2 mL of serum was used. The change in absorbance (ΔA) was measured at 340 nm with a 3 mL reaction mixture. The initial reading was 0.54 A, the reading after 5 minutes was 0.32 A. Report the AST value in IU. Equation to use when

    asked by Anonymous on August 21, 2013
  67. Chemistry

    Answer check: Define a catalyst and explain a catalyst's role in a chemical reaction. A catalyst is a substance that speeds a chemical reaction without being permanently changed itself. It works by providing a convenient surface for the reaction to occur.

    asked by Lauren on January 14, 2008
  68. Chemistry

    A reaction proceeds with ∆ H = 40 kJ/mol. The energy of activation of the uncatalyzed reaction is 120 kJ/mol, whereas i t is 55 kJ/mol for the catalyzed reaction. How many times faster is the catalyzed reaction than the uncatalyzed reaction at 25°C?

    asked by Jessica on February 28, 2015
  69. chemistry

    Which of the following statements is not true? 1.Chemical equilibria are examples of reversible processes. 2.When multiple reaction steps are in equilibrium, then the equilibrium constant for the net reaction is the product of the individual reactions.

    asked by danny on February 25, 2015
  70. Chemistry

    Consider the reaction: M + 2HCl ¨ MCl2 + H2 When 0.85 mol of the metal, M, reacted with an aqueous HCl solution (the HCl is in excess), the temperature of the solution rose because the reaction produced 6795 J of heat. What is ∆H in kJ per mol of M

    asked by Jessica on May 4, 2015
  71. Chemistry

    The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 125 kJ·mol-1 to 75 kJ·mol-1. (a) By what factor does the rate of the reaction increase at 293 K, all other factors being equal?

    asked by Sara on June 28, 2013
  72. chemistry

    The standard free energy of activation of a reaction A is 78.2 kJ mol–1 (18.7 kcal mol–1) at 298 K. Reaction B is ten million times faster than reaction A at the same temperature. The products of each reaction are 10.0 kJ mol–1 (2.39 kcal mol–1)

    asked by Deidra on December 6, 2012
  73. Inorganic chemistry

    A 50.0 ml sample of 0.0240 M NH(aq) is titrated with aqueous hydrochloric acid. What is the pH after the addition of 15.0 mL of 0.0600M HCl(aq)? (Kb of NH3= 1.8 x 10^-5) Initial amount of NH3 (0.0240)(0.05) = .0012 mol Amount of HCl added (0.0600)(.015) =

    asked by Steve on April 13, 2009
  74. enviromental

    Completely mixed flow ractor CSTR and plug flow reactor (PFR) may have significantly different efficiencies depending on the reaction order. This problem asks you to compare the relative reactor sizes required to ensure 99.0 % removal of wastewatwer

    asked by don on October 14, 2012
  75. chemistry

    What is the solubility of AgCl when it is in a solution of 0.15 M NaCl? (AgCl has Ksp = 1.8 x 10-10.) Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium concentration. Write down the equation for the Ksp

    asked by Anonymous on April 23, 2012
  76. chemistry

    What is the solubility of AgCl when it is in a solution of 0.15 M NaCl? (AgCl has Ksp = 1.8 x 10-10.) Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium concentration. Write down the equation for the Ksp

    asked by Anonymous on May 4, 2012
  77. Chemistry Lab

    What would happen to the reaction rate of a solution if 10 mL or more of water is added? Will the reaction rate increase or decrease? The following reaction occurs without a change in the color 2A (g) + B2(g) --- 2AB (g) a) How could you monitor the

    asked by Sunshine on July 21, 2009
  78. Physical Chemistry

    The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 192 kJ·mol-1 to 72 kJ·mol-1. (a) By what factor does the rate of the reaction increase at 281 K, all other factors being equal?

    asked by Mark on April 2, 2010
  79. Chemistry Lab

    What would happen to the reaction rate of a solution if 10 mL or more of water is added? Will the reaction rate increase or decrease? The following reaction occurs without a change in the color 2A (g) + B2(g) --- 2AB (g) a) How could you monitor the

    asked by Sunshine on July 21, 2009
  80. AP Chem

    Which of the following conditions would most likely affect the rate of a chemical reaction? A. Increasing the number of reaction steps B. Decreasing the size of the reaction vessel C. Increasing the concentration of reactants D. Decreasing the amount of

    asked by Andrea on February 26, 2018
  81. chemistry

    The initial concentration of a reactant in a first order reaction is 0.620 molar. What will be its concentration after 3 half-lives? a. 0.0388 M b. 0.310 M c. 0.0775 M d. 0.155M e. 4.96 M thinkin c if not need a really good explaination of the real answer

    asked by elvis on February 18, 2012
  82. Chemistry 30

    Calculate the molar heat of reaction for the NaOH(aq) using the data obtained from this experiment. (this is a neutralization question) H2so4 Volume= 30ml Concentration=1.0mol/l Initial temp. = 29.9 NAOH Volume= 50ml C = 1.0 mol/L Initial temp. = 29 Final

    asked by Marium on June 2, 2010
  83. chemistry

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

    asked by maya on August 25, 2011
  84. Chemistry

    A chemist wants to prepare phosgene, COCl2, by the following reaction: CO(g) + Cl2(g) COCl2(g) He places 2.60 g of chlorine, Cl2, and an equal molar amount of carbon monoxide, CO, into a 10.00 L reaction vessel at 395 °C. After the reaction comes to

    asked by Nina on August 3, 2014
  85. thermochemistry

    A chemical reaction takes place in a container of cross-sectional area 100 cm2 . As a result of the reaction, a piston is pushed out through 19 cm against an external pressure of 596 torr. What is the value for w for this reaction?

    asked by valerie on October 14, 2012
  86. Chemistry

    I think these I know how to do ....just want someone to check..still sorta mixed up on the first question. Thanx For the following reaction, what is the correctly balanced reduction half-reaction? Fe(OH)3(s) + Cu(s) → Fe(s) + Cu+(aq) + OH-(aq) A. e- +

    asked by Mark on March 18, 2010
  87. chemistry

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

    asked by krystal on February 11, 2012
  88. 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

    asked by Lissa on September 23, 2014
  89. chemistry, chemical kinetics

    I keep getting these questions wrong, could someone please help. Thanks so much. Question 1 For the following overall reaction, the rate constant is 3.4x10^-2. A(g)+ 2B -> 2C + D What may be the rate reaction? Question 2 The rate law for this reaction is

    asked by student on July 3, 2010
  90. Physics - momentum

    Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 22 m/s, and puck 2 has an initial speed of 14 m/s. They collide and stick together. Find the components along x and y of the initial velocities of both

    asked by J Velji on November 16, 2010
  91. Physics

    Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 22 m/s, and puck 2 has an initial speed of 14 m/s. They collide and stick together. Find the components along x and y of the initial velocities of both

    asked by J Velji on November 15, 2010
  92. 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

    asked by Iby on May 13, 2010
  93. physics

    2 identical cars capable of accelerating at 3.00m/s^2 are racing on a straight track with running starts. car A has an initial speed of 2.50m/s and car B has an initial speed of 5.00m/s. what is the seperation of the 2 cars after 10seconds? which car is

    asked by Anonymous on September 20, 2010
  94. SCIENCE

    At 35°C, K = 1.6 10-5 mol/L for the following reaction. 2 NOCl(g) 2 NO(g) + Cl2(g) Calculate the concentrations of all species at equilibrium for each of the following original mixtures. (a) 3.8 mol of pure NOCl in a 2.0-L flask NOCl ___ M NO ___M Cl2 __

    asked by BETH on November 19, 2012
  95. Chemistry.

    Predict these reaction products. If a reaction takes place, balance the reaction if needed. If no reaction takes place then write no reaction. Cu+FeCl3--->CuCl3 + Fe Double replacement Al+HBr----> AgNO3 + KCL--->AgClKnO3 Double replacement

    asked by Jessy on June 16, 2015
  96. Chemistry

    The chemical reaction N2(g)+ 3H2(g) 2NH3(g) is at equilibrium. An expirimenter increases the volume of the reaction chamber by 10%. Explain what happens to bith the forward and reverse reaction rates from the moment the volume is changed until equilibrium

    asked by Chrissy on April 12, 2007
  97. Chemistry

    Calculate the half-life (in s) of a first-order reaction if the concentration of the reactant is 0.0655 M 18.4 s after the reaction starts and is 0.0173 M 41.2 s after the reaction starts. I got 25.6 Suppose the half-life is 23.7 s for a first order

    asked by Anonymous on January 31, 2013
  98. chemistry 116

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

    asked by danny on January 28, 2015
  99. Engineering

    Three CSTRs are used in series. The second reactor has a volume twice that of the first and third reactors. The influent flow has a concentration of 150 mg/l of A, and the flowrate is 380 l/min. The reaction is first order, the rate equation is -dCa/dt=

    asked by Anonymous on October 7, 2018
  100. Chem 112

    An equilibrium was established after 0.100 mol of hydrogen gas and 0.100mol of iodine gas were added to an empty 1.00L reaction vessel and heated to 700K. The color intensity of the mixture changed from deep purple to a lighter purple color. At

    asked by Dominique on September 30, 2011