a certain reaction has the following generaln form

74,460 results, page 32

  1. Math

    The total sales of a company in 2008 were $45,000. In 2011, it grew to $84,000. Use  as the number of years since 2000 and  as the total sales, and answer the following: a. What is the rate of change (slope) in the total sales? b. Write an equation in both point-slope form ...
  2. chemistry

    In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, the oxidizing agent is____ is it hydrogen peroxide? cus its not water right?
  3. chem

    Gaseous iodine pentafluoride, IF5, can be prepared by the reaction of solid iodine and gaseous fluorine: • I2 (s) + 5F2 (g) → 2IF5 (g). • A 5.00 L flask is filled with 10.0 g I2 and excess F2 with the reaction proceeds to completion completely consumed. After the ...
  4. Chemistry

    How you do this? can you do the first one, i'll try the second one if you can explain Perform the following operations and give the answear in standard exponential form with the correct number of significant figures 1) 37.2mL + 18.0mL + 380mL= 2) 0.57cm x 0.86cm x 17.1cm= add ...
  5. science, chemistry

    Lead metal is added to 0.150 M Cr3+(aq). Pb(s)+2Cr3+(aq)⇌Pb2+(aq)+2Cr2+(aq). KC=3.2×10−10 What is [Pb2+] when equilibrium is established in the reaction? What is [Cr2+] when equilibrium is established in the reaction? What is [Cr3+] when equilibrium is established in the ...
  6. Chemistry

    The heat evolved in the reaction of hydrobromic acid with potassium hydroxide was determined using a coffee coup calorimeter. The equation for the reaction is: HBr(aq) + KOH(aq) -------------> KBr(aq) + H2O(l) When 25.0 mL of 1.00 M HBr at a temperature of 24.5oC was ...
  7. Math radical form

    Find the distance of the line segment whose endpoints are (5,7) and (-2,3) in simplest radical form. sqrt [(7-3)^2 + (5 -(-2))^2] = sqrt [16 + 49] = sqrt 65 That is the simplest form I can think of. sqrt means "square root of"
  8. chemistry

    An equilibrium mixture of SO2, O2, and SO3 at 1000 K contains the gases at the following concentrations: [SO2] = 3.77 10-3 mol/L, [O2] = 4.30 10-3 mol/L, and [SO3] = 4.13 10-3 mol/L. Calculate the equilibrium constant, K, for the following reaction. 2 SO2(g) + O2(g) 2 SO3(g)
  9. Soc

    Different ethical theories: 1.can never offer useful information. 2. must always contradict each other. 3. can agree that certain acts are morally justified. 4. always agree that certain acts are morally justified.
  10. precalculus

    please check my answers 1.Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1 2.Find the solution to the system of equations given below. x+y+z=2 -x+3y+2z=8 4x+y=4 answer: 0...
  11. another A.P Chemistry Question

    A different rigid 5.00L cylinder contains 0.176mol of NO(g) at 298 k. A 0.176mol sample of 02(g) is added to the cylinder, where a reaction occurs to produce NO2(g) (d) write the balanced equation for the reaction. (e) calculate the total pressure, in atm, in the cylinder at ...
  12. chem

    For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Al(s)+3O2 (g)-->2Al2O3 (s) 4 mol Al 2.6 mol O2
  13. Chemistry

    Which one of the following combinations of reagents will result in a spontaneous reaction? A) Al(s) + CuCl2(aq) B) Al(s) + CaCl2(aq) C) Zn(s) + CaCl2(aq) D) Cu(s) + ZnCl2(aq) I know the answer is A, but what I don't know is why, or how to figure this out. Thanks!
  14. chemistry

    Given: Cr3+(aq) + 3e¨C  Cr(s); E¡ã = ¨C0.74 V Pb2+(aq) + 2e¨C  Pb(s); E¡ã = ¨C0.13 V What is the standard cell potential for the following reaction? 2Cr(s) + 3Pb2+(aq) ¡ú 3Pb(s) + 2Cr3+(aq)
  15. chemistry

    At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.75 atm and 0.30 atm, respectively?
  16. chemistry - grade 9

    calculate the mass carbon monoxide, CO, that was needed to produce 78g of methanol, CH3OH, by the following reaction: 2H2 + CO -> CH3OH.
  17. chemistry

    how much calcium oxide is recovered when 250 g calcium hydroxide are heated given the following reaction? Ca(OH)2 arrow CaO + H2O
  18. AP Chemistry

    write the keq expression for the following reaction and determine the value of the Keq at 25degree celcius: MnO2(s)+4H+(aq)<-->Mn2+(aq)+2H2O(l)+Cl2(g)
  19. chemistry

    complete and balance the following molecular equations and then write net ionic equations for each reaction. BaCl2(aq) + K2SO4(aq) KNO3(aq) + HCl(aq)
  20. Chemistry

    Balance each of the following redox reactions and classify it as a combination, decomposition or displacement reaction. a) Mg(s)+H2O(g)->Mg(OH)2(s)+H2 b) Cr(NO3)(aq)+Al(s)->Al(NO3)(aq)+Cr(s) c) PF3(g)+F2(g)->PF5(g)
  21. Chemistry

    What is the value of Kp for the reaction: NO2(g)+CO(g)->NO(g)+CO2(g) Given the following information: 2NO2(g)->NO3(g)+NO(g) Kp=2.72x10^(-4) 2NO2(g)+2CO2(g)->2NO3(g)+2CO(g) Kp=5.73
  22. chemistry

    How many grams of 5.400 wt% aqueous HF are required to provide a 50% excess to react with 14.0 mL of 0.0236 M Th4+ by the following reaction? Th4+ + 4F - → ThF4 (s)
  23. Chemistry

    At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.81 atm and 0.20 atm, respectively
  24. chemistry

    How many grams of kmn04 are contained in 35ml of 0.05N kmn04 used in the following reaction in basic solution. the answer 0.0922g who helps
  25. chemistry

    same question as before What is the Kc for the following reaction at equilibrium at 800∘C if [CO2]= 0.030M ? CaCO3(s)⇌CaO(s)+CO2(g)
  26. chem

    Consider the following neutralisation reaction: 2 H3PO4(aq) + 3 Ca(OH)2 (aq) → Ca3(PO4)2 + 6 H2O Determine the volume of 0.75 M H3PO4 necessary to neutralise 35 ml of 0.45 M Ca(OH)2
  27. Chemistry

    Calculate the value of the equilibrium constant for the following reaction based on the given concentrations of reactants and products. N2 = 1.5 M, H2 = 0.5 M, NH3 = 2 M N2 (g) + H2 (g) ↔ NH3 (g)
  28. Chemistry

    Which atom has a change in oxidation number of –3 in the following redox reaction? K2Cr2O7 + H2O + S - - > KOH + Cr2O3 + SO2 Cr^+3 - - > Cr2O7^-2 Fe^+2 - - > Fe^+3 Fe^+3 - - > Fe^+2 Cr2O7^-2 - -> Cr^+3***
  29. Biochemistry UB Cameroon

    If 8A pass for 2minutes at the cathode(where the following reaction takes place, Ag+ + e- --->Ag) how many grams of silver metal are passed onto the cathode??
  30. chem

    Supply the missing atomic symbol to complete the equation for the following nuclear fission reaction. 1/0n +235/92U ------> 137/52 Te +?/?X + 2 1/0 n + energy also how do you decipher whether its 2 1/0n rather than 3?
  31. ap

    Which of the following is best described as an acid-base reaction? 1. NaCl + AgNO3 !NaNO3 + AgCl 2. NH3 + H2O ! NH+ 4 + OH− 3. 2HgO ! 2 Hg + O2 4. Ca + 2H2O ! Ca(OH)2 + H2 5. KCl + NH4NO3 ! KNO3 + NH4Cl
  32. 4th grade English

    Please check the following, thanks. First Syllable Accented Cancel Chamber Gather Tender Damage action Second Syllable Accented Frosty Mustang Convince Belief Behave Certain Remind Confuse Contain
  33. chemistry

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

    The decomposition of ozone may occur through the two-step mechanism shown below: step 1 O3 ----> O2 + O step 2 O3 + O ---> 2O2 The oxygen atom is considered to be: a catalyst or reaction intermediate? How am I supposed to be able to tell the difference between the two? I...
  35. conditional sentence

    1. If the sound system hadn't failed,last night's show would have been better a. this is a correct sentence using the 1st conditional form b. this is correct sentence using the 2nd conditional form C. this is a correct sentence using the 3rd conditional form answer A 2. They'...
  36. Chemistry

    For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction 2NO(g) + O2(g) --> 2NO2(g) the standard change in Gibbs free energy is ΔG° = -69.0 kJ/mol. What is ΔG for this reaction at 298 K when the ...
  37. math

    write each decimal in expanded form, in word form and as a fraction. 4.1967 3.504 0.6045
  38. Math

    What is the standard form and expanded form of Five Thousand One Hundred Fifty Three?
  39. medical information management

    you're the chairperson of the form committee. discuss the basic specifications for designing a form
  40. music

    The form of the melody called the bar form is represented by A)AAB B)ABB C)ABA D)ABBA
  41. PreCal

    express in form a+bi (1+2sqrt3)(2-3sqrt-3) so I came up with 2-3i sqrt3 + 4sqrt3 - 18i Is that solution a+bi form
  42. Spanish

    Explain how to form the usted form of the imperative of the regular -ar verb hablar I know that -ar verbs end in e
  43. Math

    How do you write 2.15 1/2 in expanded form. Our topic is transforming fractions in decimal form... but what is the fraction 1/2 doing there?
  44. Math

    A parabola has intercepts of x = -2, x = 3, and y = -4 how do I write this into these forms: the intercept form (y = a (x – m)(x – n)) and in standard (y = ax2 + bx + c) form
  45. algebra

    this is what they want and im confused can any one explain it Rewrite the following in simplified radical form. Assume that all variables represent positive real numbers

    Which of the following is NOT considered a form of electromagnectic radiaction? a-radio waves b-gravity c gamma rayas d visible light e- x-rays I think is B
  47. bio

    Which of the following is NOT true of amoebas? a. They reproduce by binary fusion. b. They move by pseudopodia. c. They have a definite shape. d. They form temporary food vacuoles.
  48. Math

    Evaluate the following expression. (Note, I'm not sure how to write this in mathematical form)but the P is slightly raised above both numbers. 210 P 1 = ______
  49. Math @Reiny

    Write the standard form equation for the following Ellipse. Use the information given below. Foci: (0,0) and (4,0) Major Axis of length 8
  50. Pre-calculus

    Find the center radius and equation of a circle in standard form given the following conditions: 1. Tangent to 3x+2y=0 at the point (0,0) and passing through (1,-1) and (6,0)
  51. Math

    place value what is standard form and what is expanded form
  52. 3rd grade math

    what is standard form ? and What is expanded form ?
  53. math 115

    1.eleven applications for a certain position had the following ages. 32, 33, 25, 36, 48, 51, 28, 23, 54, 52, 45. sort them out in ascending order. 23, 25, 32, 33, 36, 45, 48, 51, 54, I picked 33 for the middle number to get the median is it correct? 2.clay is building a pen ...
  54. chem

    Is ammonium hydroxide a strong or weak base and how do you know that? Technically there is no such thing as ammonium hydroxide. NH3 gas (ammonia gas) dissolves easily in water and produces the NH4^+ and the OH^- from the reaction with water. It is a weak base because that ...
  55. chemistry

    Complete and balance the chemical equation using compound formulas. Include the states. If there is no reaction, enter NR. Pb(NO3)2(aq) + NaI(aq) → sine Pb is not reactive, the reaction is NR. Am i correct?
  56. chemistry

    the reaction of aluminum metal (Al) with oxygen (O2) forms Al2O3. What is a balanced equation for this redox reaction. What are two half reactions to show how many electrons are gained or lost by each species?
  57. chem need assistance

    Write a balanced chemical reaction to show the reaction between ammonium and a chlorite? Is this correct? 2NH3 + CLO2 + H2O ⇒ NH4Cl + NH2O2
  58. chemistry

    If the reaction Cl2 (g) + O3 (g) = Cl2O (g) + O2 (g) occurred in just two steps, what would be the overall order of the reaction be? a. 1 b. 2 c. 3 d. 4 e. not possible to determine from the information given i have absolutly no idea how to do this
  59. Physics

    What is the gibbs free energy for the reaction a)temperature b)800 degrees celsius c)comment on whether the reactions are spontaneous or not (CHEMICAL REACTION) deltaH = -100kJ delta S= -200 J/K
  60. Chemistry

    If the decomposition reaction of 1.4 M initial hydrogen peroxide (H2O2) occurs so that after 3 minutes, 0.83 M is left, what is the rate of the reaction? a. -0.019 M/s b. -0.012 M/s c. 0.0046 M/s d. 0.0032 M/s Please help! Thanks in advance.
  61. Chemistry II

    Calculate the enthalpy for the following reaction: 4 NH3 (g) + 5 O2 (g) into 4 NO (g) + 6 H2O (g). You may only use the following information: N2 (g) + O2 (g) into 2 NO (g); Delta Hf = 180.6 kJ N2 (g) + 3 H2 (g) into 2 NH3 (g); Delta Hf = -91.8 kJ 2 H2 (g) + O2 (g) into 2 H2O...
  62. History

    Which of the following is NOT something a geographer can explain to a historian? A.why people populated certain areas B.how people change their environment C.how the environment changes people D.why people like other people I know is D but i need accurate answer
  63. Complex number cartesian form

    Hello everyone, Need a bit of help. (-2-2i)^5 I want to turn this into Cartesian form using the modulus. Into the form z^n=r^n(cos n0 +i sin n0) So far I have r=2sqrt(2) The angle ive worked out as pi/4 or 45 degrees (im not 100% confident here). Now im a bit unsure how I put ...
  64. Science-Chemistry

    I did a lab on Elements and Compounds and I would be grateful if u could provide and tell me some information on my work. Lab --Investigation--Elements and compounds. Can an element be separated from a compound? Can an element form a compound? In this investigation, you will ...
  65. Chemistry

    Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g) 2. When 2.75 dm3 of O2 react with an excess of glucose (C6H12O2), according to the reaction below, ...
  66. chem plzzz help

    okay so im doing pre lab questions on reaction rates I have a chart labeled effects of varying concentration in reaction #1 flask A contains 7.50mL of .200 M KI , none of .20M KCI, 5.00 mL of .0050 M S2O3^2-, 1 drop of starch. Flask B contains 7.5mL of .100M S2O8^2- It says ...
  67. Math

    Need Answer to the Following Please: Using the 9 digits, 1, 2, 3, 4, 5, 6,7, 8 and 9 you can arrange four different digits to form a four-digit number that is NOT divisible by 7. The digits 1238 cannot be arranged to create a four-digit number that is divisible by 7. The ...
  68. Pre-Calc Help please?

    The more you study for a certain exam, the better your performance on it. If you study for 10 hours, your score will be 65%. If you study for 20 hours, your score will be 95%.You can get as close as you want to a perfect score just by studying long enough. Assume your ...
  69. chem

    a.) At equilibrium, the molar concentrations for reactants and products are found to be [I2] = 0.50 M,[Cl2] = 0.60 M, and [ICl] = 5.0 M. What is the equilibrium constant (Kc) for this reaction? b.) The concentration of I2 is increased to 1.5 M, disrupting equilibrium. ...
  70. algebra

    pliis the equivalent form indicated for each of the following fractions 7/9=?/45 and 11/5=?/35 pliis help meee
  71. Math

    What is the complete factored form of the following polynomial? 15j^3+30j^2 A)5j(3j^2+6j) B)15(j^3+2j^2) C)5(3j^2+6j) D)15j^2(j+2)
  72. AP chemistry

    which of the following aqueous solutions should not form a precipitate with aqueous ba(no3)2?
  73. math

    Rewrite the following equation in the center-radius form of the equation of a circle. x2 - 2x + y2 + 2y - 2 = 0
  74. Algebra

    Write the following in simplified form the 4th root of the 3rd root of a^12 b^36 c^14
  75. Math - ASAP Please

    (Slope-Intercept Form) Which of the following lines has a slope of -1/2? A) x + 2y = 0 B) x - 2y = 0 C) -x + 2y = 0
  76. Chemistry

    Calculate the ΔHrxn for the following reactions using the heats of formation given in the table at the end of this assignment: a)The complete combustion of methane, CH4, producing water as a liquid. b)The complete combustion of glucose, C6H12O6, producing water as a ...
  77. chemistry

    What is the standard entropy of reaction, the standard entropy of reaction, in J/K, for the combustion reaction of ethylene described in the previous questions? The temperature is 298.15K. (Enter your answer as a signed number in scientific notation without units.) My answers ...

    One of the few xenon compounds that form is cesium xenon heptafluoride (CsXeF7). How many moles of CsXeF7 can be produced from the reaction of 13.0 mol cesium fluoride with 14.0 mol xenon hexafluoride? CsF(s) + XeF6(s) --> CsXeF7(s)

    One of the few xenon compounds that form is cesium xenon heptafluoride (CsXeF7). How many moles of CsXeF7 can be produced from the reaction of 13.0 mol cesium fluoride with 14.0 mol xenon hexafluoride? CsF(s) + XeF6(s) --> CsXeF7(s)
  80. Chemistry

    What if when I find my product, I get the same compound as I did in my reactant? For example, FeCl3 + HCl ->FeCl3 + HCl. Then something is wrong. In this case, FeCl3 and HCl usually don't react. In very concentrated solutions of HCl, the FeCl4^- or FeCl6^-3 ion can form. In...
  81. Spanish

    Can you double check if I followed the directions correctly this time too and the answers were correct. Give the correct form of the appropriate verb, saber or conocer, which would be used in writing the following sentences in Spanish.Be sure the verb is written in the correct...
  82. Spanish

    Need help with this-- 'Write the time in sentence form (in spanish) for each of the following: 77. 1:15 78. 2:30 79. 4:45 80. 7:10 Thanks! -MC
  83. math

    Form the composites of the following two functions. f(x)=x2 +7x--4 and g(x)=3x--12 5. (f  g)(x) 6. (g  g)(x) thanks!
  84. math

    Which of the following below shows the expression below in simplest form? 2y^2 - 50/y - 5 Is it "C" A. 2(y-5) B. 2(x +50) C. 2(y+5) D. 2(y^2 +5)
  85. math

    Write the following ratio in simplest form: 32 min : 36 min
  86. Chem Help Please!

    Compare the relative reaction rates of 1-bromobutane, 2-bromopropane, and 2-bromomethylpropane under SN1 reaction conditions. Silver nitrate will be used to provide nitrate ion as the nucleophile to produce alkyl nitrates as products. 1) I found the answer for this one. 2) You...
  87. Math

    Hello! Could someone please take a look at the problem below and let me know if I made mistakes in simplifying the given equation? I'm quite certain that I did make a mistake somewhere because the original equation and its simplified form give different graphs when plotted. I ...
  88. Please help!! Math

    Solve the following problem using a method of your choice. A store clerk who is taking inventory in a toy store of bicycles and tricycles in a certain way. He commented that there are 50 wheels and 40 pedals. How many bicycles and how many tricycles did he have?
  89. eth

    Should United States government policy favor certain kinds of immigrants? o Should [citizenship] preference be given to the neediest applicants? The most talented? The most oppressed? The richest? o Should applications from certain countries be given priority? Please let us ...
  90. math

    Without adding write the following in standard form. 70+400+2+3,000+80,000=
  91. MATH

    Write each of the following ratios in simplest form. 1. The ratio of 5 3/5 to 2 1/10 A~8 TO 3? 2. The ratio of 7 dimes to 3 quarters A~ 14 TO 15?
  92. math

    Simplify each of the following, if possible. Write your answers in the exponential form ab. (a) 24 • 25 • 28 (b) 34 + 2 • 34 (c) 250 • 250
  93. 9th grade

    pliis the equivalent form indicated for each of the following fractions 7/9=?/45 and 11/5=?/35 pliis help meee
  94. Math

    which of the following is the equation in slope intercept form of the line that passes through (0, 2) and has a slope of -3? A. y = -3x + 2 B. y = 2x - 3 C. y = 2/3x + 0 D. y = -3/2x + 0
  95. Math, Please Help!

    Find the a/b form, where a and b are integers and b isn't equal to 0, for each of the following: A. 0.29 (29 repeating) B. 0.00029 (29 repeating)
  96. Math

    An employee has a certain percentage of her paycheck put into a retirement fund. The table shows how y the amount withheld is based on x dollars earned Which of the following entries could be another line from this table? X Y 500 25 1500 75 1800 90 A.x 750 y 50 B.x 3300 y 150 ...
  97. Physical Science

    The physical properties of ice are different from the physical properties of dry ice (frozen carbon dioxide). But the physical properties of gaseous water vapor and the physical properties of gaseous carbon dioxide are the same. Why? A.) The valence electrons are more tightly ...
  98. Music appreciation

    What muscial form preceded the sonata allegro form that was often considered dramatic and rewarding.
  99. Medical Terminology

    The combining form chem/o is used to form the word chemotherapy because therapy begins with a ____________?
  100. Calculus

    Find a solution to the equation if possible. Give the answer in exact form and in decimal form. 8=4sin(5x)
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