chemistry! URGENT

61,409 results, page 64

  1. Practical chemistry

    Preparation of 0.1m H2S04 of 500cm3 flask
  2. Chemistry

    What is the mass of ethylene gycol dissolved in 5.00 kg of a 40.0% solution?
  3. Chemistry

    cr(s)--->Cr^3(aq)+3e- and Pb2+(aq)+2e---->Pb(s) write a balanced equation Please help thanks
  4. Chemistry

    cr(s)--->Cr^3(aq)+3e- and Pb2+(aq)+2e---->Pb(s) write a balanced equation Please help thanks
  5. chemistry

    please i need example of hno3 cuo
  6. chemistry

    how to determine the oxalate and copper in K[Cu(C2O4)2].2H2O
  7. chemistry

    Can a solution of CrCl3 be stored in an aluminum container?
  8. Chemistry

    Is Cl2 + 2e- -> 2Cl- an oxidation half-reaction?
  9. Chemistry

    Is Cl2 + 2e- -> 2Cl- an oxidation half-reaction?
  10. chemistry

    balanced equation for the reaction of HNO3 + STARCH +KI
  11. M.m.m.campus (chemistry)

    Laboratory preparation of carbon dioxide?
  12. Chemistry

    Does NaHCO3 form an acidic aqueous solution?
  13. Chemistry

    Would the VSEPR notation of CH3Cl be AX4?
  14. chemistry

    What is the balanced equation for a reaction of iron with chlorine?
  15. chemistry

    how do i convert 0.00183338433 g/mL to mM? and putting it in 4 significant numbers. thank u
  16. chemistry

    sulfuryl cholorie decomposes toSo2 and cl2
  17. chemistry

    the skeletal structures of two amino acids.
  18. chemistry

    what kind of hybridization exists for each carbon in the lattice?
  19. Chemistry

    What is the difference in alkane and Alkene functional group?
  20. chemistry

    You have 10.0 g each of Na, C, Pb, Cu and Ne. Which contains the smallest number of moles?
  21. Chemistry

    How do you draw N,N-dimethylheptanamine? The N,N part is confusing me most.
  22. Chemistry

    How many grams of NaOh are needed to prepare 0.5l of a 4m solution?
  23. Chemistry

    How to separate and isolate the components of barium sulfate?
  24. Chemistry

    2C6H6+X -> 12CO2+6H20 Find x Is x 30O?
  25. Chemistry

    Calculate the [H], [OH], pH and the pOH of this solution; 0.0025 M NaOH
  26. chemistry

    what is evidnece that cathode rays are part of matter?
  27. chemistry

    What is the vapor pressure of helium at 1 atm and 298 k?
  28. Chemistry

    What is the vapor pressure of CH4 at 1 atm and 298k?
  29. Chemistry

    What is the difference between polar and nonpolar molecules?
  30. Chemistry

    How many moles of iron atoms does a 27 g sample contain?
  31. chemistry

    caculate 230 ml of 1.1 molarity HCl solution
  32. Chemistry

    Calculate the ph of a buffer made from 0.25 m NH4Cl and 0.42 M NH3. Kb= 1.8 x 10^-5
  33. Chemistry

    Suppose the solubility of PbCl2 (s) 5.6 x 10^-2 M. Calculate the ksp
  34. Chemistry

    how do you draw a Lewis structure for lithium chlorine
  35. chemistry

    why do we add anhydrous ether to organic mixtures?
  36. Chemistry

    Why is ionization energy for calcium greater than that for potassium?
  37. chemistry

    calculate the wavelength of an electron m=9.11 x 10^-28 g moving at 3.66x10^6 m/s
  38. chemistry

    calculate the wavelength of an electron m=9.11 x 10^-28 g moving at 3.66x10^6 m/s
  39. Chemistry

    What is the molarity of a 5.00 x 102 ml solution containing 2490 g of KI?
  40. CHEMISTRY HELP! D;

    1.Br2(g) + ___H2O(l) + ___SO2(g) ---> ___HBr(aq) + ___H2SO4(aq)
  41. AP Chemistry

    Where did you get the two that you multiplied by the atomic mass of iron?
  42. chemistry

    determine the molecular mass of magnesium oxide?
  43. Organic Chemistry

    Is ethyl cyclohexane optically active?
  44. Chemistry

    If 23.7g of C8H18 are combusted, what mass of water will be produced?
  45. Chemistry

    How many mole of KClO3 are needed to make 320g O2
  46. chemistry

    how much oes 3.10cm3 of copper weigh
  47. chemistry

    acid rain --how does it cause environmental and health problems
  48. Chemistry

    why is it impossible to completely separate ethanol from water?
  49. Chemistry

    why is it impossible to completely separate ethanol from water?
  50. chemistry

    How many grams of O2(g) are needed to completely burn 24.0 g of C3H8(g)?
  51. Chemistry

    Provide the products for this reaction: CH3O- +CH3SH -> ????
  52. Chemistry

    How many moles of H2O are in 3.00L of water? (d=1.00g/mL)
  53. 12th grade chemistry

    What is the structure for ethyl ethanamide? (Ie. c-c-N-c-c) ??? Thanks
  54. Organic chemistry

    Name all the isomers for c5h10br2
  55. Chemistry

    What is the balanced chemical equation for Sr(NO3)2 + Na2PO4
  56. Chemistry

    How many moles are contained in 1.20 x 1024 molecules CO2?
  57. Chemistry 10

    reaction of AgNO3 with BaO... Would it be Ag^+ + O^---> AgO (s)
  58. Chemistry

    How to write the equation for the combustion of ethane C2H6?
  59. Chemistry

    Convert the concentration of CoCl2 from 22.0 mg/mL into molarity.
  60. Chemistry

    How many moles of NH3 can be produced from 19.5mol of H2 and excess N2
  61. Chemistry

    Calculate the number of atoms in 46.0 grams of Calcium 9(Ca)
  62. chemistry

    When doing an experiment with a calorimeter why is important to keep the lid on?
  63. chemistry

    How many grams of H2 are needed to produce 10.75g of NH3?
  64. Chemistry

    How many lone pairs are in a chlorite ion (CLO2)- ?
  65. Chemistry

    how do I do this problem 0.700 mol of Na2S in 1.55 of solution?
  66. chemistry

    How many grams of carbon dioxide are produced from 48.8 g of C4H10?
  67. Chemistry

    When CuCl2 and NH4OH are combined what is the product formed?
  68. Chemistry

    When CuCl2 and NH4OH are combined what is the product formed?
  69. Chemistry

    When CuCl2 and NH4OH are combined what is the product formed?
  70. chemistry

    DrBob222 - it says my answer should be a number.
  71. general

    What are some great sites to help you with chemistry problems?
  72. chemistry

    Hydroselenic acid in formula form is H2SeO4?
  73. chemistry

    Na3PO4(aq) and AgNO3(aq). Write the ionic equation.
  74. chemistry

    The pressure in a 5.75 L container of 48.0 g of bromine gas at 100.0°C is
  75. Chemistry

    How would I extract benzophenone from acetylsalicylic acid? thanks
  76. chemistry

    Is CO2 a product of an acid/base reaction?
  77. Chemistry

    Why does Cl- have a larger ionic radius than CA2+ ?
  78. Chemistry

    Why does Cl- have a larger ionic radius than Ca2+ ?
  79. chemistry

    Write the equation for the dissociation of carbonic acid.
  80. Chemistry

    Please help! Is 4-methylphenol acid, basic or neutral?
  81. chemistry

    2.5g of magnesium is how many moles? How do i set it up? Help would be awesome thanks.
  82. CHEMISTRY

    CALCULATE THE MOLARITY OF 50.0g OF NaCL IN 7820mL OF SOLUTION
  83. Chemistry

    What is the % (m/v) concentration of the calcium chloride 1000.00mL
  84. Chemistry

    What is the osmolar concentration of 1.000M CaCl2 solution
  85. Chemistry

    Do pipettes blow up like balloons when they are heated. Why or why not?
  86. Chemistry

    How do you express relative amounts pf each element in a compound?
  87. AP Chemistry

    What is the value of Ksp for Ag2SO4 if 5.70 g is soluble in 1.00 L of water?
  88. Chemistry

    Which gas diffuses most rapidly at STP? Ar, Kr, N2, or O2? Why?
  89. chemistry

    Diagram for the preparation of oxygen from potassium trioxochloric(v)
  90. CHEMISTRY

    HELP MY REPORT IS ABOUT SATURATED ND UNSATURATED SOLUTIONS
  91. Chemistry

    Rank Cd, Br, and Si from worst to best conductor of electricity. Is it Br, Cd, Si? Thanks -MC
  92. chemistry

    solve net ionic equATION Ba(OH)2 + Na2SO4
  93. Chemistry help

    How many grams if nh3 can be produced from 2.57mol of n2 and excess h2?
  94. Chemistry

    How many grams of H2 are needed to produce 12.88g of NH3?
  95. Chemistry

    How many molecules (not moles) of NH3 are produced from 3.65x10-4g of H2?
  96. Chemistry

    A+2B--->2C Kc=2.27 2c--->D Kc=0.144 Calculate the equilibrium constant for the reaction D--->A+2B
  97. Chemistry 192

    Give the electron configuration for the following: A) Ni^2+ B) Br^-
  98. Chemistry

    A solution has 0.45 mol of NaOH dissovled in 90 L of water. What is its [OH-]?
  99. chemistry

    calculate the number of molecules found in 4.50 g of water
  100. chemistry

    What is the product for Ni(s) + 2Na^+? I don't think this is possible. Am I wrong?
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