chemistry! URGENT

61,546 results, page 52

  1. chemistry

    how many significant figures are in the measurement 0.002 ml? 2??
  2. Chemistry

    What is the mass of a 4 kg object, A. On the earth (g=-10 m/s/s) B. On the moon (g=-2 m/s/s)
  3. Chemistry

    What intermolecular forces are present in CSH2??
  4. chemistry

    The molar volume of an ideal gas is
  5. CHEMISTRY HELP

    how many hao's exhibited by S16? my answer is 4?
  6. Chemistry

    What are some errors that can be made in colorimetry?
  7. chemistry

    HCOOH + CaCO3 will give what (what are the products)
  8. Chemistry

    If there are 5,280 ft=1.00 mile ,how many miles are in 50,000 ft?
  9. Chemistry

    I want to make 10 ml solution of 80% NaOH and 20% KOH
  10. chemistry

    What is the mass of 0.0137 mol of aspirin?
  11. general chemistry

    How many oxygen atoms are in 3.90 g of quartz?
  12. Chemistry

    0.00267m= how many nm? please show me how to set this up. thanks!
  13. Chemistry

    How many kJ is released when 3.4 mol of water is frozen?
  14. chemistry

    would NBr3O be polar or nonpolar?
  15. Chemistry

    average atomic mass of isotopes
  16. Chemistry

    8.00 times10*19 molecules H2O to grams
  17. Chemistry

    How many atoms are in 448 grams of carbon?
  18. Chemistry

    What is the mass in grams of Br in 8.53 moles of FeBr5?
  19. chemistry

    find the# of molecules in 5.3 moles of h20
  20. chemistry

    give products of HgCl2 + KSO4
  21. chemistry

    calculate the molar concentration of 0.1 " AgNO3
  22. chemistry

    How many moles of platinum would be in 10.0 g of this metal?
  23. chemistry

    Name a lustrous non metal?
  24. chemistry

    Can a substance,that cannot be electrolysed,conduct electricity?Why?
  25. chemistry

    what is the pH of .001M solution of acid (pKa=3)
  26. Chemistry

    How many grams of drug X are in 10 mL of a 1:200 solution of X?
  27. Chemistry

    Why is it important to not let the wooden split burn ?
  28. chemistry

    At what ph will Al(OH)3 begin to precipitate from a .10 M solution of AlCl3?
  29. Chemistry

    What is the bond enthalpy of N2(g)+2H2(g) --> N2H4(g)?
  30. Chemistry

    How many oxygen atoms are there in 0.018 mg of H2O?
  31. Chemistry

    What is the mass of an atom's nucleus called?
  32. chemistry

    How many kilojoules are absorbed when 318 g of Ca(OH)2 reacts?
  33. chemistry

    name three characteristics of nonmetals
  34. chemistry

    What is the pH of a 0.5 M solution of NaHCO3? Kb = 2.4x10-8 (base)
  35. chemistry

    calculate the pH of 5M aqueous ammonia. Given kb=1.8 x 10^-5
  36. Chemistry

    What is the chemical formula for coconut oil?
  37. Chemistry

    What is the Lewis structure for salicylic acid ?
  38. chemistry

    how many molecules are present in a 750 ml of C6H12O6
  39. chemistry

    How to solve this problem in counting atoms 2 pb(CN)2
  40. Chemistry

    Would copper (II) phosphate be nonpolar?
  41. Chemistry

    Explain the trends in the solubility of water.
  42. Chemistry

    How can i synthensize 1g of salicylic acid from benzene
  43. Chemistry

    How can i synthensize 1g of salicylic acid from Phenol
  44. Chemistry

    What is the ionic strength of 0.2 M Na2HPO4 in a solution?
  45. chemistry

    why we not use HNO3 and HCl in iodometry
  46. Chemistry

    How do you find the formula for nitric acid?
  47. Chemistry

    What does potassium nitrate form when it decomposes
  48. Chemistry

    How many molecular does 36.0 grams of water represent?
  49. Chemistry

    if i added (0.1N) 4.6 ml of NaOH to 10 ml of Ch3cooh calculate the ph
  50. Chemistry

    Calculate the mass of Mg needed to produce ~40 mL of H2. how do I do this?
  51. Chemistry

    Why is radius of Fe2+ less than that of Mn2+ ?
  52. Chemistry

    What happens to the pH of an acidic solution when it is heated
  53. Chemistry

    Complete the reaction- 2F2(g)+2H2O(l)=?
  54. chemistry

    what is the mass of an empty 75 mm test tube?
  55. Chemistry

    What is the density of NH3 at 800torr and 25 Celsius?
  56. chemistry

    how many chloride ions are in o.35 mol MgCl2?
  57. chemistry

    ___Fe(NO3)2 + Al___Al(NO) +__Fe
  58. Chemistry

    what is the oxidation number of Chlorine in KCIO4???
  59. Chemistry

    Highest ionization energy to lowest I be ci f
  60. Chemistry

    Highest ionization energy to lowest I be ci f
  61. chemistry

    calculate the pH of a 0.100M NH4Cl solution.
  62. Chemistry

    Calculate the empirical formula of Tylenol: C, 63.56%; H, 6.00%; N, 9.27%; O, 21.17%
  63. chemistry

    How many grams of NH4Cl will dissolve at 50 degrees C?
  64. Chemistry

    How many moles are in 2.3 grams of oxygen gas.
  65. Chemistry

    Is the formation of C2H2 endothermic or exothermic?
  66. Chemistry

    What is the pH of a 0.052 Mole solution of HCl?
  67. chemistry

    how many protons and electrons are in 7.4 grams of hydrogen?
  68. Chemistry

    Find the % ionization if the pH of a 0.10 mol/L solution is 4.5
  69. chemistry

    What is the volume of 3.11×10 to the power 23. Molecules of NH3 at S.T.P
  70. Chemistry

    Which is more soluble in water, Cl2 or I2?
  71. chemistry

    what is the concentration of 24.5g of Ca(NO3)2 in 244mL of water
  72. chemistry

    What is the equilibrium constant for 2A + 3B (double arrow) =4C Is it (C)^c/ (A)^a (B)^b
  73. Chemistry

    What is the solubility of ZnCO3 at 25 o C in a buffer solution with a pH of 9.74?
  74. Chemistry

    What are the number of molecules in 16g of h2co3??
  75. chemistry

    Which conducts better, BeCl MgCl2
  76. Chemistry

    How can I do an acrostic poem for the word REDOX?
  77. Chemistry

    Calculate the ph of a solution that is 0.157m HCI?
  78. Chemistry

    What is the oxidation state of chromium in cr2o7^-2
  79. Chemistry

    What is the oxidation number for each atom in NH4F? N=+3, H=-4, F=+1 N=-3, H=+1, F=-1*** N=+3, H+1, F=-1 N=-3, H=-1, F=+1
  80. Chemistry

    Write on the physical properties of benzene
  81. Chemistry

    How many electrons are present in 0.002 moles of O--?
  82. chemistry

    a compound or solute will molecular mass 36?
  83. chemistry

    a compound or solute with molecular mass 36?
  84. Chemistry

    What is the percent of aluminum in Al2(SO4)3? A. 15.8% B. 28.1% C. 56.7% D. 54.0% C?
  85. chemistry

    calcuate the normality of 0.2M solution of h3p04 ?
  86. Chemistry

    How many ml of 8.00 M Na OH is required to neutralize 200 ml of 4.00 M HCl?
  87. Chemistry

    The Ka of an acid is 1.3 x 10–7. Based on the Ka and its relationship with Kw, what is the value of Kb?
  88. chemistry

    Why reversible reaction never complete
  89. Chemistry

    Calculate the normality of 1.5M sulphuric acid
  90. Chemistry

    What is the volume in L of 34.0g of Ammonia (NH4) at STP?
  91. chemistry

    Decomposition of nitrogen pentoxide in ccl4
  92. chemistry

    Decomposition of nitrogen pentoxide in ccl4
  93. Chemistry

    How many molecules are in 5.2L of carbon dioxide gas?
  94. college chemistry

    prepare 0.2M phospate buffer of pH 5.7
  95. Chemistry

    What is the concentration of a monoprotic weak Acid if its pH is 5.50 and its Ka= 5.7 x 10^-10?
  96. Chemistry

    How do you determine the polarity of a substance? Example?
  97. chemistry

    why is helium considered a noble gas?
  98. chemistry

    how many representative particles are there in 5 mole h2o
  99. CHEMISTRY

    why is glass called a supercooled liquid?
  100. chemistry

    how many moles of fe are present in 30g of rust?
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