1. pre-calculus-check over work

    1). change to exponential form: log2^256=8; 2^8=256 log0.0001=-4; 10^-4=0.0001 2). change to logarithmic form: 5^3=125; log5^125=3 4^-3=1/64; log4^1/64=-3 3). solve the equation: 3^(x-2)=27^(x+1) 3^(x-2)=(3^3)^(x+1) 3^(x-2)=3^(3x+3) x-2=3x+3 -5=2x -5/2=x 2^(x^(2)+1)=4^(x+2) 2...
  2. Algerba I

    a trapezuim has no sides parallel. Its area is given by the following expression 1/2(ah1 + bh2) Note: the 1 and 2 are small and almost under but beside the h A. Evaluate the expression for a = 5 ft 4 in., b = 2 ft 8 in., h1 = 4 ft 4 in., h2 = 6ft 4 in B. If a gymnast stands ...
  3. Chemistry

    Aluminium react with oxygen to form aluminium oxide.how many grams of potassium chlorate V would be heated to produce enough oxygen to form 5.1grams of aluminium oxide
  4. prepositional calculus

    Convert the following formula to conjunctive normal form (clause form). a) a ≡ (b ≡ c) is the answer (a כ(( b כ c) ^ (c כ b))) ^ ((( b כ c) ^ (c כ b)) כ a) unsure thanks
  5. Chemistry

    1.) Explain the similarity between Mg(OH)2 and Zn(OH)2 in particular why would any insoluble hydroxide tend to dissolve in an acidic solution? Are they both bases? 2.) Explain the difference in particular how does Mg^+2 appear to form complex ions with OH^- and NH3? If these ...
  6. math,help plz

    i am lost with this one. Solve the system by graphing. what is the soltion. 2x-2y=10 x+y=3 x=4 This is how the problem is with all thre equations. Help me please..... put it in slope intercept form. put both lines in slope intercept form. 2x-2y=10 x+y=3 y= x-5 y= -x + 3 now, ...
  7. Biology

    sorry a few more questions why can DNA form fibres that allow it to seprate from RNA while RNA cant form such fibres? also, when treated with DNAse, I know DNA viscosity reduces because its cut up into smaller pieces. but on a graph of viscosity vs time, I have this ...
  8. Physics

    A metal of block of mass 10kg lies on a rough plane, horizontal force of 8n applied to the block through it's centre of mass just slides the block on the plat form. What is the coefficient of limiting friction between the block and the plat form.
  9. Art

    an environment artist created a piece in protest of trash. Anticipation negative public reaction, the artist decided to display the work anyway. what is the most likely reason? A. The artist believed that the purpose of the work was to stir up awareness B. The artist did not ...
  10. Chemistry- rate laws

    CH3CHO decomposes into methane gas and carbon monoxide gas. This is a 2nd order reaction. Rate of decomposition at 140 degrees Celsius is .10M/s when the concentration of CH3CHO is .010. What is the rate of the reaction when the concentration of CH3CHO is .50M? Have not been ...
  11. English

    If you want to answer my questions, put up your hands....(one question)..(A boy answers the question, but not in a complete form....) 1. Try to answer the question in a full sentence/form. 2. You should answer the question in full sentences/forms. 3. Answer the question in a ...
  12. language arts

    Is the comparative form of sadly....more sadly? and is the superlative form of sadly....most sadly? Thanks.
  13. math 4

    A formed planted 12/18 of his form with pechay how many thirds of the form was planted with pechay
  14. chemistry

    a reaction known to release 1.78 kilojoule of heat takes place in a calorimeter containing 0.100L of soln. the temperature rose by 3.65C. next, a small peice of caco3 was placed in same calorimeter and 0.100L of dilute Hcl was poured over it. the temperature of the calorimeter...
  15. Chemistry

    2. When a 1.000 g sample of the rocket fuel hydrazine, N2H4, is burned in a bomb calorimeter which contains 1200g of water, the temperature rises from 24.62C to 28.16C. If the C for the bomb is 840 J/C Calculate: q reaction for combustion of a one-gram sample and q reaction ...
  16. biology

    A. The change in Gibbs free energy of ATP synthesis (acknowledging the body requires 46.3 kJ/mole) is.. This reaction is endergonic or exergonic? The energy for ATP synthesis comes from Is energy used to make ATP transferred in a single reaction or is it the sum of many? ...
  17. Chemistry

    Which of the following species is the strongest oxidizing agent under standard state conditions? a. Ag+(aq) b. H2(g) c. H+(aq) d. Cl2(g) e. Al3+(aq) An oxidizing agent is a substance that gains electrons in a redox chemical reaction. I think Al3+ has a very high electron ...
  18. cHEMISTRY

    If a precipitation reaction occurs, when a solution of one substance is added to a solution of the other, enter the formula and state of the spectator ions. Separate by comma. If there is no reaction, enter the formula and state of all ions in solution. 3Zn(NO3)2(aq) + 2K3PO4(...
  19. 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 16.91 grams of WS3 are used? How ...
  20. Chemistry

    Given the standard heats of reaction Reaction ∆H0 M(s) + 2 X2(g) → MX4(g) −123.7 kJ/mol X2(g) → 2 X(g) +297.3 kJ/mol M(g) → M(s) −25.1 kJ/mol calculate the average bond energy for a single M X bond. Answer in units of kJ/mol
  21. chemistry

    Given the standard heats of reaction Reaction ∆H0 M(s) + 2 X2(g) → MX4(g) −123.7 kJ/mol X2(g) → 2 X(g) +297.3 kJ/mol M(g) → M(s) −25.1 kJ/mol calculate the average bond energy for a single M X bond. Answer in units of kJ/mol
  22. chemistry

    The reaction for the complete combustion of acetylene is shown below. C2H2(g) + 5/2 O2(g) -----------> 2 CO2(g) + H2O(l) ΔH = -1299 kJ Use this reaction and the data below to calculate the heat of formation for acetylene. ΔHf[H2O(l)] = -285.8 kJ/mol Î...
  23. chemistry

    The reaction for the complete combustion of acetylene is shown below. C2H2(g) + 5/2 O2(g) -----------> 2 CO2(g) + H2O(l) ΔH = -1299 kJ Use this reaction and the data below to calculate the heat of formation for acetylene. ΔHf[H2O(l)] = -285.8 kJ/mol Î...
  24. chemistry

    Show the calculation of (1) the expected grams of aspirin (C9H8O4) formed in the reaction of 2.7 grams of salicylic acid (C7H6O3) with excess acetic anhydride and then show the calculation of (2) the % yield if the actual yield of aspirin is 1.44 grams. Reaction is shown below:
  25. Chemistry

    H2(g) + I2(g) 2 HI(g) The forward reaction above is exothermic. At equilibrium, what happens if I2 is removed from the reaction mixture at constant temperature and volume? select all that apply 1.) Energy is absorbed 2.) Energy is released 3.) [H2] increases 4.) [H2] decreases...
  26. Chemistry Equilibrium

    1.15 g oh h2O (density 1.00 g/ml) is introduced into an empty 1.00 L container. The seled container is heated to 412 K and .150 moles of O2 (g) is present at equilibrium. A. Wrte the equilibrium expression for the reaction above. B. Calculate the equilibrium concentration (in ...
  27. Chemistry

    Reaction 6 1. Place a piece of mossy zinc in a test tube 2 add hydrochloric acid solution to the test tube until the mossy zinc is completely covered What gas was released in reaction 6 and how could you test the gas to confirm its identity?
  28. 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 ...
  29. Science

    Please summarize this. I got it from a website and im doing my notecards. Im not trying to plagiarize, Im just not a science person. Please just summarize it so I can just understand it so I can explain it in my own words: The light reaction happens in the thylakoid membrane ...
  30. Chemistry

    A 500g iron (Fe) rod was left in air for a long period of time, and got covered with rust (Fe2O3) as a result of reaction with atmospheric oxygen. The mass of the rusty rod was determined as 560g. a) calculate the theoretical yield of Fe2O3(s), that is the mass of Fe2O3(s) ...
  31. Chemistry

    The Haber process is used to synthesize ammonia (NH3) from N2 and H2. The change in standard Gibbs free energy is ΔG°rxn = -16 kJ/mol A. Calculate the equilibrium constant for this reaction B. Calculate the ΔGrxn when you have 2 atm of NH3 (g), 2 atm of H2 (g), and ...
  32. chemistry

    Determine the limiting reactant for this reaction if 3.027 grams of Aluminum are reacted with 60.00 mL of a solution that is 6 M KOH. Determine the amount of KAl(SO4)2•12 H2O that can be produced from this reaction. Molar mass Alum = 474 g/mol 2 Al (s) + 2 KOH (aq) + 22 H2O...
  33. chem

    What mass of ice at 0°C can be melted by the addition of 1670 joules of heat? When the temperature is decreased on the following system at equilibrium: 2 HCl(aq) + Mg(s) <--> MgCl2(aq) + H2(g) + heat a. In order to restore equilibrium, the reaction shifts left, toward ...
  34. chemistry

    A reaction is run in which dissolved silver ions are reduced in the presence of solid copper. THis reaction can be used to produce a silver coating on a copper wire frame. .249g of copper wire was placed in a 100 mL of a 0.500 M solution of silver nitrate. What is the maximum ...
  35. Chemistry

    The rate constant, k, for each reaction order is equal to _____ from the linear plot. Reaction Order Answer zero ______ first ______ second ______ a. slope (m) b. y-intercept c. x-intercept d. negative of the slope (-m) e. 0 i think zero order is maybe d? not sure
  36. chemistry

    The first step in the process used to recover zinc metal from zinc sulfide ore is the reaction of zinc sulfide with oxygen gas to produce zinc oxide and sulfur dioxide. 2 ZnS(s) + 3 O2(g) → 2 ZnO(s) + 2 SO2(g) When the external pressure is 142700 Pa and the temperature ...
  37. organic chemistry

    I really need help with this question. It is located at the link below. Question #2. I understand the general reaction but I need help with the actual mechanism. Olopatadine is a drug used topically to treat the itching associated with conjuctivitis It is prepared via a ...
  38. Chemistry

    A calorimeter contains 21.0 mL of water at 14.0 degreesC. When 1.90 g of X (a substance with a molar mass of 70.0 g/mol) is added, it dissolves via the reaction X(s)+H_2O(l)reacts to make X(aq) and the temperature of the solution increases to 28.5degreesC. Calculate the ...
  39. chemisrty

    Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of MgSO3 and HI are mixed. 2 H+(aq) + SO32-(aq) → H2O(l) + SO2(g) 2 H+(aq) + SO32-(aq) + Mg2+(aq) + 2 I-(aq)→ H2SO3(s) + MgI2(aq) Mg2+(aq) + 2 I-(aq) → MgI2(s) 2 ...
  40. chemistry

    For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate, mol L-l s-l 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is therefore a. rate = k[XO...
  41. Chem

    If a precipitation reaction occurs, when a solution of one substance is added to a solution of the other, enter the formula and state of the spectator ions. Separate by comma. If there is no reaction, enter the formula and state of all ions in solution. CoI2(aq) + Pb(NO3)2(aq...
  42. Math

    Find each probability. Write your answer in simplest form. I am a bit confused on what they mean when they say write the answer in simplest form. Picking a diamond from a standard deck of playing cards which has 13 cards in each of the four suits: spades, hearts, diamonds and ...
  43. Math in Science

    A rock containing a newly discovered fossil is found to contain 5 mg of an unstable form of potassium and 5 mg of the stable element formed from its decay. If the half-life of the unstable form of potassium is 1.3 billion years, how old is the rock? What can you infer about ...
  44. Medical Staff Service

    i need help on someone one showing me how to set up a proctorship form. for example i need to prepare a form showing how the proctorship process is completed for a surgeon who recently obtained staff privileges instead of doing the surgeon show me a example with the midwife ...
  45. 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 ...
  46. algebra

    Find the complex zeros of the polynomial function. Write f in factored form. F(x)=x^3-8x^2+29x-52 Use the complex zeros to write f in factored form F(x)=____(reduce fractions and simplify roots)
  47. math

    turn standard form into scientific notation: 1. 12457.686 m 2. 0.000065423 g 3. 128.90 g 4. 0.0000007532 m turn scientific notation back to standard form: 1. 1.37 x 10^4m 2. 2.875 x 10^2g 3. 8.755 x 10^-5g 4. 7.005 x 10^-3m
  48. Chemistry

    Which pair of compounds will form a solution?Benzene (C6H6) and hexane (C6H14)Na2SO4 and benzene (C6H6)NaCl and hexane (C6H14)H2O and CCl4More than one of the combinations above will form solutions.
  49. pre-calculus

    find the complex zeros of the polynomial function. write F in the factored form. f(X)=x^3-7x^2+20x-24 use the complex zeros to write f in factored form. f(x)= (reduce fractions and simplify roots)
  50. algebra

    given point slope form linear equation to use in answers y-3=3(x+ 1) a.What is equation in standard form of a parallel line that passes through (0, -2)? y = 3x -2 -3x + y = -2 b. on parallel line find the ordered pair where x = -2? would it be -2.0 if not what about? -2, -8 -3...
  51. English

    1. The old lady moved me. 2. I was moved by the old lady. (#1 is an active voice sentence. Right? #2 is the passive form of#1? Am I right? Do you use the active form frequently?)
  52. Math

    How do I transform this into simple radical form... I have no idea how to do this could you please tell me the logic behind how you do this and step by step thanks (5^(1/2)-3^(1/2))^2 thanks again Also can you tell me how to transform this one into radical form also 18^(1/2)-3...
  53. math

    How do I put an equation into standard form, Ax+Bx=C? I have the given points (-1,3) and (2,-4). Also, how do you write an equation in standard form when perpendicular through another? [the question is "through (-1,2) and perpendicular to 2x-3y=-5]
  54. English

    What do you think he is doing? 1. I think he is playing computer games on the computer. 2. I think he is playing a computer game on the computer. (Which answer is right? Do we have to use the singular form or the plural form?)
  55. chem

    A certain first-order reaction has a rate constant of 2.75 10-2 s−1 at 20.°C. What is the value of k at 50.°C if Ea = 75.5 kJ/mol? i know to use the ln(k1/k2)= (ea/R)((1/T1)-(1/T2)) but how do i know what T2 is when i only have one temp? there is a b part to the ...
  56. Chemistry

    Use this reaction for this question: 4NH3 (g) + 2O2 (g) 4NO (g) + 6H2 (g); H = -905 J. Which statement is true about the reaction above? A. G is negative at all temperatures. B. S is negative and G is positive. C. S is negative and G is negative. D. G is positive at all ...
  57. Chemistry

    The solubility of CaCO3 at 25 degrees celsius is 6.90*10-5M. The reaction is CaCO3(s)-->Ca 2+(aq) + CO3 2-(aq) <-- a. Calculate the concentration of Ca +2 and CO3 -2 at equilibrium. b. Calculate the equilibrium constant for the dissolution reaction. (also known as the ...
  58. Calorimetry Chemistry

    Please help with these questions. Thanks Consider the reaction C12H22O11(s)+ 12O2(g)-->12CO2(g)+11H2O(l) <-- in which 10.0 g of sucrose,C12H22O11 , was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/ degrees celsius. The temperature increase was found to be...
  59. Chemistry

    If 2.5 g of element A combine with 5 g of element B to form compound AB how many grams of B are needed to form compound AB2? Which law did you use to answer this question ? My answer is 7.5 g. Im not sure if this is right. Please help this is due Thursday morning C an you ...
  60. Biology(Anatomy&Physiology)

    1)Which organelle makes most ATP 2)The chemical reaction that joins two amino acids is called 3)In a single molecule of water which type of bond holds the H to the O? 4)Which type of chemical bond results from the transfer of an electron from one atom to another 5)A chemical ...
  61. English

    Complete the sentence by writing the correct form of the word in parentheses. You may not need to change the form that is given. 1. She made her fortune in the ____ market before she became a full-time philanthropist. (security) Would the correct answer be "securities"? This ...
  62. chemistry 2

    the two half-reactions that are used in the direct methanol fuel cell are shown below. I. 2 CH3OH(aq)+2H2O(l)=>2CO2(g)+12H+(aq)+12e- II. 3O2(g)+12H+(aq) +12e-=>6H2O(l) the electrode at which half-reaction I occurs is the ______ at which______ is oxidized, and half-...
  63. chemistry 2

    the two half-reactions that are used in the direct methanol fuel cell are shown below. I. 2 CH3OH(aq)+2H2O(l)=>2CO2(g)+12H+(aq)+12e- II. 3O2(g)+12H+(aq) +12e-=>6H2O(l) the electrode at which half-reaction I occurs is the ______ at which______ is oxidized, and half-...
  64. Chemistry

    The reaction of sodium hydrogen carbonate (baking soda), NaHCO3 and vinegar is a safe and effective method of opening a clogged drain a) Write the chemical equation for this reaction b) Explain why using sodium hydrogen carbonate and vinegar may be a greater alternative to ...
  65. Chemistry

    Please write the balanced chemical equation for reaction the following chemical reaction ozone gas, O3, reacts with 3,3,4,4,5,5-hexanmethyl-1-hexyne, H-C≡C-C(CH3)2-C(CH3)2-C(CH3)2-CH3 to produce carbon dioxide gas, CO2 , and water gas, H2O When balancing the equation , ...
  66. chemistry

    2.2. Billions of kilograms of urea, are produced annually for use as a fertilizer. The reaction used is given below. NH3(g) + CO2(g) → CO(NH2)2(s) + H2O(l) The typical starting reaction mixture has a 3:1 mole ratio of NH3 to CO2. If 47.7 g urea forms per mole of that ...
  67. 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...
  68. Chemistry

    "Solid dinitrogen pentoxide is added to water." I got this as my answer: N2O5 + H20 -> 2HNO3. Do I need to break 2HNO3 apart since it's a strong acid? I thought it wouldn't since I thought it was a synthesis problem. I read online that this was the answer (N2O5 + H2O ->H...
  69. Chemistry

    b)Rubidium Express your answer in condensed form, in order of increasing orbital energy. c)Tellurium Express your answer in condensed form, in order of increasing orbital energy. d)Palladium Express your answer in condensed form, in order of increasing orbital energy. e)...
  70. chem 126

    Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH < 8.3) and pink in the basic form (pH > 10.0). It is a weak acid with a pKa of 8.7. What is the ratio of the conjugate base concentration to the acid concentration, that is, [B-]/[HB] ...
  71. Science / Biology

    How does modern science explain the evolution of abiotic to biotic matter? How would the first life form have survived in the first day / week of its formation? What kind of system of organelles / biological functions would it have to form in the first day / week of it's ...
  72. science

    please help me with the following: The methanol production process is operated at 250 - 300 ºC & @ pressures of 50 - 100 atmospheres in the presence of a copperbased catalyst. Comment on whether these operating conditions, 250 - 300 ºC & 50 - 100 atmospheres, are consistent ...
  73. chemistry

    in an experiment, a 4.000grams sample of aluminum metal is added to a solution containing 5.000grams of dissolved iron chloride. the reaction results in the formation of aluminum chloride and metallic iron. when the reaction is complete, unreacted aluminum remains, and this ...
  74. Chem

    Consider this reaction: CO (g) + H2O (g0 <---> CO2(g)+H2(g) kc=102 at 500 K A reaction mixture initially contains 0.145 M of CO and 0.145 M of H20. What would be the equilibrium concentration of [CO]? I so far have kc= [H2][CO2]/[CO][H2O]= 102 I know i have to set up an ...
  75. Chemistry

    For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate, mol L-ls-l 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is therefore a. rate = k[XO]...
  76. Chemistry II

    Here is information that you will need to help me solve my poblem: C. (Given the values for m,p,and n caculate the rate constant k for each mixtureby simply substituting those orders, the initial concentrations, and the observed rate from the table....)so I did that and got: ...
  77. Chemistry

    A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original sample was magnesium...
  78. physic

    The drawing shows a device that you can make with a piece of cardboard, which can be used to measure a person's reaction time. Hold the card at the top and suddenly drop it. Ask a friend to try to catch the card between his or her thumb and index finger. Initially, your friend...
  79. Chemistry

    A mole of methane reacts with 64g of oxygen at 1 atm, 425 K. There are two ways in which methane can react with oxygen. It can either form water vapor and carbon dioxide or water vapor and carbon monoxide. After reaction the final gas density is 0.7282 g/L. What is the ...
  80. chemistry

    Given the equilibrium system PCl5(g) <---> PCl3(g) + Cl2(g) K = 12.5 at 60 degrees Celsius. A 1.0-L reaction vessel is analyzed and found to contain 3.2 mol Cl2(g), 1.5 mol PCL3(g) and 3.0 mol PCl5(g). Show that the reaction mixture has not yet reached equilibrium
  81. Chemistry

    What is the difference between a chemical change and a chemical reaction?? My answer: A chemical change leads to a solidifed chemical reaction but more or less they are the same thing because it's a change in which one or more pure substances are converted into diffeent pure ...
  82. Romeo and Juliet quick n simple question

    What is Lord Capulet's reaction to Paris's proposal to marry juliet. And what is Lady Capulet's reaction to Paris's proposal to marry juliet. You can give me a link or you can express your own ideas.
  83. Chemistry

    For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate,mol L-l s-1 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is therefore a. rate = k[XO]...
  84. chemistry

    Given the equilibrium system PCL5(g) <----->PCl3(g) + Cl2(g) K = 12.5 at 60 degrees celsius. A 1.0 L reaction vessel is analyzed and found to contain 3.2 mol Cl2(g), 1.5 mol PCl3(g) and 2.0 mol PCl5(g). Show that the reaction mixture has not yet reached equilibrium.
  85. 5th grade math

    My daughter must correct the problems that she has gotten wrong in math, and we are trying to help her. I can not remeber how to write decimals in exponential form, and I tried looking in her book. Can some one help me so that I can help my daughter. Thanks Here is the problem...
  86. BLD 414

    A liquid solution of formaldehyde is 37.0% pure. This solution has a specific gravity of 1.037. The molecular weight of formaldehyde is 30.0. to 1.00 ml of this impure stock solution is added quantity sufficient to take the total volume to 500ml. If 1.00 ml of this solution is...
  87. math

    the disney golf classic starts with 64 golfers. the golfers form pairs and each pair plays a match. the losers drop out and the winners of each pair then form new pairs and play again. then those winners form pairs and play. this continues until there is one winner. in how ...
  88. Extraction equations

    Extraction procedure and equations: Thought I'd better post this on the current page. I need the reaction equations checked. I tried to put them in bold but can't. They should all be after Reaction: Solid benzoic acid, p-nitroaniline and napthalene -> Dissolve in CH2Cl2 -&...
  89. chemistry

    Carbon reacts with chlorine and hydrogen to form the compound CH3Cl. (a) Construct the structure of CH3Cl. What is the dominant form of secondary bonding for CH3Cl? Dipole-dipole interactions, London dispersion forces, Covalent bonding, Ionic bonding
  90. chem

    1.Aqueous solutions of sodium and copper (II) chloride are mixed together. which statement is correct? a. both NaCl and CuS will precipitate from solution b. no precipitate will form c. CuS will precipitate from solution d. NaCl will precipitate from solution e. no reaction ...
  91. Chemistry 12

    9. According to Arrhenius, which of the following groups contain: i)only acids ii)only bases a. NaOH, H2CO3, KCl b. MgCl2, H2SO4, HCl c. HNO3, HCl, H3PO4 d. Mg(OH)2, AgBr, HF e. KOH, NH4OH, Ba(OH)2 10. Enough water is added to 100 g of sodium hydroxide in order to obtain a one...
  92. AP Biology

    After an enzyme is mixed with its substrate, the amount of product formed is determined at 10-sec intervals for 1 min. Data: 0 secs. = 0.0 product formed (mg) 10 secs = .25 product formed (mg) 20 secs = .50 product formed (mg) 30 secs = .70 product formed (mg) 40 secs = .80 ...
  93. Chemistry

    For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate, mol L-ls-l 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is therefore a. rate = k[XO]...
  94. chemistry

    Imagine a hypothetical reacion for which, H = 0 kJ · mol−1. Considering the Le Chatelier principle, which of the following statements is true? a. Raising the temperature of the system will have no effect. b. Raising the temperature of the system will cause the reaction...
  95. Chemistry

    20.00mL of a 1.100E-4 mol/L Pb(NO3)2 is mixed with 80.00mL of 4.450E-2 mol/L CaI2. Will a precipitate form? Here's what I did... [Pb2+] c=n/v = (1.1E-4 mol/L x 0.02L)/(0.02L + 0.08L) = 2.2E-5 mol/L [I-] c=n/v = (4.45E-2 mol/L x 0.08L)/0.1L = 3.56E-2 mol/L Qsp = [Pb2+][I-] = (2...
  96. chemistry

    The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or 8.25*10^-11 M. ...
  97. chemistry

    The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or 8.25*10^-11 M. ...
  98. Single vs double replacement reactions

    How would you compare a single replacement reaction to a double replacement reaction?in laymans terms?
  99. biology

    using lactose and a ph value of 3,5,7,9,11, Why was there no increase in the reaction rate with 8.0 g. of substrate as compared to 4.0 g. of substrate? What would you need to add to see an increase in the reaction rate with 8.0 g. of substrate?
  100. logic

    Convert the following formula to conjunctive normal form (clause form). a) a ≡ (b ≡ c) is the answer (a כ(( b כ c) ^ (c כ b))) ^ ((( b כ c) ^ (c כ b)) כ a) unsure thanks
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