chemistry! URGENT

61,546 results, page 66

  1. chemistry(solutions)

    What is the % w/v of 13.2 g of salt dissolved in 264 mL of solvent?
  2. chemistry

    Can someone show me how to make a smoke bomb?
  3. Chemistry

    The density of 18% HCl is 1.09g/ml. Calculate its molarity (M).
  4. chemistry

    When 40.2g of kc103 is heated what quantity of kc1 is produced
  5. chemistry

    how do you convert volume of gas to moles of solid?
  6. Chemistry

    What is the percent by mass of hydrogen in aspirin C2H8O4?
  7. Chemistry

    What is the mass of 1.00 mol of sodium hydrogen carbonate?
  8. Chemistry

    find the mass in grams of 1.40x10^23 molecules of n2
  9. chemistry

    how many HCl needed to dissolve 1 grams of Al2O3.
  10. chemistry Drbobz222

    How do i convert mols CaCl2 to AgCl
  11. chemistry

    How to prepare 0.2M of NaOH in 250ml volumetric flask???
  12. Chemistry

    Why is the carbonate solution boiled before titrating?
  13. chemistry

    How do gas particles exert pressure on their container?
  14. Chemistry

    I would i calculate the E.F of nitrogen 21% hydrogen 7.48% chlorine 66.35%
  15. chemistry

    Give the shapes of CH3, O3, SnCl3, BrF3, I3
  16. chemistry

    how many moles are present in 2.45 x 10²³ molecules CH₄?
  17. chemistry

    at STP , what is the volume of 7.08 mole of Nitrogen gas ?
  18. chemistry

    Balance redox reaction. Fe(s) + O2(g) + H2O(l)-->Fe2+(aq) +OH-
  19. chemistry

    how do I write the rate of the reaction for the following: Cl(g)+O3(g)-> ClO(g)+O2(g)
  20. chemistry

    How can Coulomb's law explain the distribution of electrons.
  21. Chemistry

    Why does the carotene elute from the column before the chlorophylls?
  22. Chemistry

    Why does the carotene elute from the column before the chlorophylls?
  23. Chemistry

    Why does the carotene elute from the column before the chlorophylls?
  24. Chemistry

    Why does the carotene elute from the column before the chlorophylls?
  25. Chemistry

    What is the percent by mass of NaHCO3 and KCl in the mixture.
  26. chemistry

    Calculate the pH of a saturated solution of Sr(OH)2. The Ksp for Sr(OH)2 is 3.2x10^-4.
  27. Chemistry

    What is the name of the substance with formula Cu(H2O)6SO4?
  28. Chemistry

    How do I get the answer to ?mass, 200 cm3volume, 6.843 g/ml=
  29. Quick chemistry help

    What is the precipitate color for Na3PO4+CaCl2?
  30. chemistry

    chemical formulae for naphthalene and benzoic acid
  31. chemistry

    why does HF have a boiling point of 19°c and H2O 100°c
  32. Chemistry

    calculate the density of 50.0 g of gold that occupies a volume of 2.59 mL.
  33. Chemistry

    what is the PH of a solution of .1 M NAN3 that disassociates into HN3
  34. chemistry

    How many kilocalories are required to produce 1.83mol of aluminum?
  35. chemistry 30

    Calculate the enthalpy of reaction for the combustion of ethene.
  36. Chemistry

    how to prepare 100.0 ml of 0.2 M solution of sodium hydroxide
  37. Chemistry

    Are acids or bases suppose to react with carbonates?
  38. chemistry

    Calculate the hydroxide ion concentration of a solution with pH = 8.25.
  39. Chemistry

    What is the empirical formula for a compound that is 1.67g Ce and 4.54g I?
  40. chemistry

    is acid rain homogeneous or heterogeneous mixture?
  41. chemistry

    I would love help on trying to start this problem?
  42. biology/ chemistry

    how do electrolytes affect the formation of micelles?
  43. chemistry

    what is the strongest intermolecular force in nitrogen trifluoride
  44. Chemistry

    How many grams of CO(g) are there in 67.0mL of the gas at 0.826atm and 30 ∘C?
  45. chemistry

    Calculate the volume occupied by 3moles of a gas at r.t.p
  46. Chemistry

    What intermolecular forces are responsible for neoprene's stretchiness?
  47. chemistry

    the complete electrolysis of 90 grams of water will yield
  48. chemistry

    What is the heat involved when 3.00 g of aluminum oxide is formed?
  49. chemistry

    Why do you add Sodium hydroxidein your reduction procedure
  50. Chemistry

    What is a balanced equation for a Base-Acid Titration?
  51. chemistry

    How many grams of H2 are needed to produce 12.22g of NH3?
  52. chemistry

    How many molecules (not moles) of NH3 are produced from 3.55×10−4g of H2?
  53. Chemistry

    C18H32O2 + 2H2 - C18H3602; oxidized or reduced?
  54. chemistry

    what is ion pair formation in regards to extractions
  55. Chemistry

    What is the energy and frequency of a photon with a wavelength of 2.57 ×102 m?
  56. chemistry

    How to calculate the concetration on a Beer's law plot?
  57. chemistry

    q4 What element has the greatest first ionization energy? Li Na K Rb Cs
  58. chemistry

    What is the approximate effective nuclear charge for arsenic ?
  59. Chemistry

    In which condition(s) can I get this reaction: Fe + H2SO4 = Fe2(SO4)3 + H2
  60. chemistry

    how many ml of nitric acid will neutrilize 20 ml of KOH at .5 moles
  61. chemistry

    why does the neutrality in the blood depends on the concentrations of [H+] and [OH-] rather than pH.
  62. Chemistry

    How much heat is absorbed when 60.0h of ammonia is vaporized ?
  63. chemistry

    How many equivalents of an acid or base are in the following? 0.43mol Mg(OH)2 and 2.8g Mg(OH)2?
  64. chemistry

    find the numbers of elerctorins in 18ml water
  65. Chemistry

    Explain why a catalyst speeds up a chemical reaction.
  66. Chemistry

    Why may the absorbance of a filtrate be higher than it's theoretical concentration?
  67. CHEMISTRY

    ARRANGE THE FOLLOWING 0.1 M SOLUTIONS IN ORDER OF INCREASING PH
  68. chemistry

    What is the mass of 225ml of a liquid that has a density of 0.880g/ml
  69. Chemistry

    Calculate the frequency of an electron traveling at 1.85X10^7 m/s.
  70. chemistry

    What is the dominant intermolecular force for propionic acid?
  71. Chemistry

    Does aluminum dissolve in acidic and basic solutions?
  72. chemistry

    how is silver separated from its soluble salt solution?
  73. Chemistry

    How many grams of rust are produced from the oxidation of 10.0 lb of iron?
  74. Chemistry

    Round to the correct number of significant figures. 1) 6.02/2.23 2.70 2) 18.42/2.34 7.87 3) 35.15/3.10 11.3
  75. Chemistry

    How would you know if AgNO3 + Al(NO3)2 forms a precipitate?
  76. chemistry

    What is the molecular weight and formula for petroleum ether?
  77. organic chemistry

    how many atoms are there in 42.2g of sulfur divided by 1.0x10 to 23
  78. Chemistry

    How many hydrogen atoms are in a 15.00 mg sample of glucose? (C6H1206)
  79. chemistry

    Write the differences between atom and molecules?
  80. chemistry

    Which ions are formed during electrolysis of water?
  81. Chemistry

    A solution of NH3 in water has a pH of 11.17. Calculate it's molarity
  82. Chemistry

    Explain the role of CH3CO2Na n the preparation of Fe(C5H7O2)3)3
  83. Chemistry

    Explain the role ch3co2na in the preparation of fe(c5h7o2)3
  84. chemistry

    What mass of water can be heated from 45C to 88C with 28 kj?
  85. Chemistry

    How do I find the number of grams of .25 moles of neon?
  86. analytical chemistry

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

    How much heat (in kilojoules) is released on reaction of 5.30 g of Al?
  88. chemistry

    How many oxygen atoms are present in 2.00 millimoles of H2SO4?
  89. chemistry

    what can be separated into atoms with a chemical reaction.
  90. Chemistry

    Calculate the number of ion 16g H2CO3
  91. chemistry or physics

    What is the speed of light in scientific notation?
  92. chemistry

    Determine the pH of a 1 M aniline solution (Kb = 4.2 10-10). I am unsure how to start, any help?
  93. CHEMISTRY

    2BrF3(g)Br2(g) + 3F2(g) STANDARD ENTHALPY?
  94. Chemistry

    Which of the following is a monatomic cation? Br NH4+ SO42– Fr+
  95. chemistry

    how many oxygen atoms are in 10 formula of Al2(SO4)3
  96. chemistry

    the number of moles in 12.04x10^23 molecules of Oxygen
  97. Chemistry

    How do shape and symmetry influence the polarity of a molecule?
  98. Chemistry

    What is the chemical formula and name when the following are added: 1. Na+1 Na-3 2. Na+1 Br-1 3. Na+1 O-2
  99. chemistry

    Is bp of para and meta and ortho isomer are same
  100. chemistry

    How many molecules are in 24.0 g NO2? Answer in units of molec.
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