chemistry! URGENT

61,843 results, page 99
  1. chemistry

    How do I determine how many moles of KMnO4 it takes to neutralize C2O4-?
  2. chemistry

    large and small number are most easily handle when expressed in
  3. Chemistry

    What is the structure of SN? I thought .:S=N:: or ::S=N:. but both were deemed wrong by the homework software we have... help!
  4. Chemistry

    How do I find the number of particles in 1 pound of NH3(Ammonia)?
  5. chemistry

    convert the following measurements to the units specified 1) 357ml = ?L 2) 25kg = ?mg 3) 35,000cm = ?L
  6. chemistry

    What happens to the physical properties as the strength of intermolecular forces increases?
  7. Chemistry

    What effect does the presence of an impurity have on the freezing point of a liquid?
  8. CHEMISTRY

    HOW MANYMOLES OF SULFUR DIOXIDE CAN BE PRODUCED FROM 20.0G OF HYDROGEN SULFIDE?
  9. chemistry

    how do i calculate the molar solubility of AgBr in .10M NaBr?
  10. Chemistry

    he Ksp of mercury(II) hydroxide, Hg(OH)2, is 3.60 × 10-26. Calculate the solubility of this compound in g/L. I came up with x=2.8*10^-13
  11. chemistry

    What is the density of air if a 5000ml sample has a mass of 0.125?
  12. chemistry

    What is the density of air if a 5000ml sample has a mass of 0.125?
  13. chemistry

    convert the following measurements to the units specified 1) 357ml = ?L 2) 25kg = ?mg 3) 35,000cm = ?L
  14. Chemistry

    The temperature of a 2.25L sample of gas decreases from 45.0'C to 20.0'C. What is the new volume?
  15. Chemistry

    How many atoms of carbon are found in 5.94 grams of acetic acid?
  16. chemistry

    In 2 - 3 scentences, please write how electrochemistry is involved in preventing corrosion. Thank you
  17. chemistry

    Please balance magnesium sulfate and iron III acetate
  18. Chm101 introductory inorganic chemistry

    The abundant metal in sea is
  19. chemistry

    if 0.4M NaOH is titrated with 0.4M HF, how do we calcualte the ph at equivalence. The book assumes each is 1L, but why do we use 1L
  20. chemistry

    calculate the number of moles of sodium carbonate in one dm3
  21. Chemistry

    How many ml of water must be added to 40.0 ml of 2.50 m koh to prepare a solution that is 0.212 m?
  22. chemistry

    equation for the dissolution of solid sodium hydrogen carbonate
  23. chemistry

    Calculate pH of 0.02 mol/L Ba(OH)2 solution. (Assume 100% dissociation).
  24. chemistry

    give a balanced equation between phosperuos and sodium hydroxide
  25. chemistry

    if equal volumes of pH6 and pH7 are added what is the resulting pH?
  26. chemistry

    when you burn ionic and covalent compound using Bunsen burner,what you will see?
  27. chemistry

    what is the mass in grams of 0.0850 mol of hydrogen atoms?
  28. chemistry

    45.3 m + 12.344 m + 1000m - 1.34 m = ________________________ is 1 056.304 m the answer?
  29. chemistry

    why is it necessary to try and keep the temperature constant during an experiment of determining pKa by pH measurements?
  30. chemistry

    a has at 635 mmHg and 36 C occupies a volume of 9.80 L. calculate at stp
  31. College Organic Chemistry

    Why are fractionating towers in a refinery always tall?
  32. chemistry

    in column chromatography in general do polar or nopolar elute first
  33. organic chemistry

    how to find ethyl benzoate from methyl benzene
  34. Chemistry

    6.2g of NaOH is added to 800ml of water What is the molarity of the solution? What is the pH?
  35. Chemistry

    What mass of Cu(IO3)2 can be formed from 0.690g of CuSO4-5H2O?
  36. Chemistry

    Calculate the percentage, by weight, of each of the elements (C, H, O) in glucose. C= 40% H= 6.7% O= 53.3% Correct?
  37. Chemistry 104

    The pH of 0.3 HSO3- is: (How can this problem be solved?) The final answer is 4.41 However, I keep getting 3.76
  38. Science Chemistry

    How do I make an electron dot diagram for MgO? (
  39. organic chemistry

    how many carbons in nonane are in the sp2 hybridization state
  40. chemistry

    Describe an object that commonly undergoes (or could undergo) oxidation.
  41. Chemistry

    Calculate the velocities of electrons with de Broglie wavelengths of 1.7 102 nm and 5.0 nm, respectively.
  42. chemistry

    If a solution containing 0.22 M Cl -, Br -, I -, and CrO42- is treated with Ag+, in what order will the anions precipitate?
  43. Chemistry

    How many electrons would be required to fill the following sublevels? *3s *4s *3d *4d *3p *2d *3f *4d Choices are as follows A. 2 B 6 C 10 D 14 E There is no such orbital
  44. chemistry

    Name each of the following ions: b. ClO3- d. SO42- f. CO32- h. CH3COO- i. HCO3-
  45. chemistry

    What is the de Broglie wavelength of an oxygen molecule, O2, traveling at 503 m/s?
  46. Chemistry

    How many electrons would be required to fill the following sublevels? This is what I got *3s = A *4s = A *3d = C *4d =C *3p =B *2d= E *3f =E *4d =C Choices are as follows A. 2 B 6 C 10 D 14 E There is no such orbital
  47. Chemistry

    The Ksp of tin(II) hydroxide, Sn(OH)2, is 5.45 × 10-27. Calculate the solubility of this compound in g/L.
  48. chemistry

    What is the temperature of 0.65 mol of gas at a pressure of 1.1 atm and a volume of 11.2 L?
  49. chemistry

    How many grams of potassium iodide, KI, are required to make 2.0 L of a 0.1M solution?
  50. Chemistry

    Describe the physical and chemical changes that occur in grains during cooking.
  51. chemistry

    To which one of the following reactions occurring at 25°C does the symbol deltaH°f[H2SO4(l)] refer
  52. Chemistry

    What is the chemical reaction between Phosphoric Acid and Disodium Phosphate?
  53. Chemistry

    What will happen if 100g of NaCl is placed in 200mL of water at 70C
  54. Chemistry Gd 11

    How many molecules of product would be produced from 10g of chlorine gas ??
  55. Chemistry Gd 11

    If 150g of C8H18 is combusted what mass of water will be produced???
  56. chemistry

    what is the meaning of gibbs free energy? I have the equation, but what exactly, in words, does it mean?
  57. Chemistry

    How do you make 5% ammonium oxalate? I know the mass is 142.11g.
  58. Chemistry

    Determine the pH of a 0.45M solution of Na2SO3 where Ka1 = 1.5 x 10^(-2) and Ka2 = 6.3 x 10^(-8).
  59. chemistry

    What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA–, A2–) at pH 8.98?
  60. chemistry

    Which type of fat is easier to break down, saturated or unsaturated? Why?
  61. chemistry

    draw all possible z isomers for an alkene with the formula C4H7Br. im having some difficulty, please help
  62. Chemistry

    What is the oxidation state of Cr in each of the following compounds? (a) CrO (b) CrO3 (c) Cr2 O3
  63. Chemistry

    What is delta H for NaOH(s)+1/4O2(g) yielding 1/2Na2O2(s)+1/2H2O(l) ?
  64. Chemistry

    What is the molar volume of pure water at 22 degrees Celsius?
  65. Chemistry

    What is the boiling point of ethanol when the atmospheric pressure is 60kPa?
  66. Chemistry

    How can you predict the heat of combustion for a substance with no carbon atoms?
  67. Chemistry 11

    Mass of oxygen needed to react completely with 64.3 g ammonia?
  68. Chemistry help

    COVALENT BONDS BETWEEN THE MONOMERS OF AN ENZYME MACRO MOLECULE ARE?
  69. Chemistry

    How many milliliters of 0.326 M HCl would be required to titrate 5.48 g KOH?
  70. Chemistry

    What is the molecular ratio in the following equation:H2O + SO3 = H2SO4
  71. chemistry

    41. Ethyne, C2H2, used in welding react with oxygen as shown below.
  72. Chemistry

    Calculate The volume occupied at s.t.p by 0.24g of ozone ( o=16, G.M.V=22.4dm3
  73. Chemistry

    How many milliliters of 0.291 M HCl would be required to titrate 6.83 g KOH?
  74. chemistry

    HClO4 Express your answers as ions separated by a comma.
  75. Chemistry

    Two successive reactions, D-->E and E-->F, have yields of 48% and 73%, respectively, What is the overall percent yield for conversation of D to F?
  76. Chemistry

    what is the energy if a photon of red light that has a wavelength of 8.90x10^-7
  77. Chemistry

    What amount of heat is required to raise the temperature of 10.0 g of aluminum by 15.0 C
  78. Chemistry

    What is the total kinetic energy of 1.70 moles of N2 at 30.0 celsius? What formula do I use?
  79. chemistry

    Devils food cake has a [H+] of 2.7 x 10-8 mol/L. calculate pH pOH [OH-]
  80. chemistry

    15G OF NACL OCCUPY A VOLUME OF 75 Ml what is the molarity solution ?
  81. Chemistry

    When hydrogen reacts with a metal, does it form a cation or an anion?
  82. Chemistry (reactions)

    Ch3Ch2Ch2MgBr + H2O = I just need to complete the reaction not balance it.
  83. Organic Chemistry

    Explain why the formation of one geometric isomer is favored over the other?
  84. Chemistry 111

    How many moles of nitrogen N are there in 71.0g of Nitrous Oxide(N2O)?
  85. Chemistry

    How many electrons in an atom can have each of the following quantum number or sublevel designations? 1. n = 4, l = 3
  86. Chemistry College

    Is there a simple formula for the Enthalpy of solution and/or hydration?
  87. 11th grade Chemistry

    How to draw a Lewis dot structure....
  88. chemistry

    What are the different physical properties between HCl and NaCl? And explain the causes of their differences?
  89. chemistry

    C+HNO3=H2CO3+H2O+NO2 which type of reaction is it.
  90. chemistry

    What are the different physical properties between HCl and NaCl? And explain the causes of their differences? THANKS
  91. Chemistry

    How many moles of phosphorus atoms are in 100 grams of P4S10?
  92. Chemistry 111

    how many grams of water are needed to react with 80.0g CaCn2?
  93. Chemistry 111

    how many grams of Nh3 are produced from 5028g CaCn2?
  94. chemistry

    you have a block of ice that weighs 500g. how many CO2 molecules do you have?
  95. organic chemistry

    on a newman projection, what does it mean when there is a blank where a substituent should be? does that mean H or CH3?
  96. Chemistry

    Calculate the amount of H2 produced from the reaction of 4.25 grams Zn and 25 ml of 3.0 M HCL.
  97. Chemistry

    What amount of heat is required to raise the temperature of 10.0 g of aluminum by 15.0 C
  98. Chemistry

    what is the energy in joules of one quantum of 3^8 m/s? reply in scientific notation
  99. Chemistry help pls

    DEFINE REDOX REACTION WIT EXANPLE
  100. chemistry

    give the state symbols of the reaction: 2H2 +O2 =2H2O