chemistry! URGENT

61,409 results, page 60

  1. Chemistry

    Find the [OH-] of .196 M NaOH and .262 M NH4Cl
  2. chemistry

    150 ml M/10 Ba(MnO4)2 in acidic medium can oxidise what?
  3. chemistry

    10.3 gm NaBr is solved in 50 ml of water. What will be the molality of solution?
  4. Chemistry

    Find the strength of 2.45 gm of (H2SO4) in 250 ml of the sol.
  5. Chemistry

    Will ph value of water be same at temp 25°C & 4°C? Justify it.
  6. Chemistry

    Will ph value of water be same at temp 25°C & 4°C? Justify it.
  7. Chemistry

    Will ph value of water be same at temp 25°C & 4°C? Justify it.
  8. Chemistry

    Calculate the number of C, H and O atoms in 1.75 g squaric acid. :)
  9. College chemistry

    is dispersion force the strongest IM for Cl2
  10. Chemistry

    How to separate acetic acid from aqueos solution.
  11. Chemistry

    How to separate acetic acid from aqueos solution.
  12. chemistry

    complete and balance the following : Zn(s)+HCl(aq)-> Zn(s)+Cu2+(aq)->
  13. chemistry

    calculate when 7.14 of butane reacts with excess oxygen
  14. chemistry

    In beta decay, why does the atomic number increase by 1?
  15. Chemistry 111

    what is the molar mass of Butane,C7H10?
  16. Chemistry

    How calculate concentration by using molecular weight.
  17. Chemistry

    Hi. How would I determine the rate constant of a reactant?
  18. chemistry(:

    What happened to the outer electrons of H and O to form water?
  19. Chemistry

    How many moles of H atoms are there in 33.4282 grams of C2H4Cl2?
  20. chemistry

    Calculate the ph for ch3co2h,3% dissociated at a concentration of 0.02 mol dm-3.
  21. chemistry

    a compound used to manufacture mustard gas is ?
  22. chemistry

    bond angle and hybridisation of oxygen in water is ?
  23. Chemistry

    give the reaction when lead nitrate is heated
  24. chemistry

    What causes the calcium and ATP concentrations to decrease?
  25. chemistry

    why doesnt sun attract earth towards it
  26. chemistry

    Name the substances which decolourise bnromine water
  27. Chemistry

    convert 33 miles/hour to meters/minute
  28. chemistry

    how do you calculte the volume of a single drop of water??
  29. chemistry

    how to draw newman projection for different structure
  30. chemistry

    balance the equation:C2H6 + O2 = CO2 + H2O
  31. AP Chemistry

    What is the weight of 6.3 × 10 21 atoms of phosphorus? Answer in units of g
  32. chemistry

    convert 1.5ft^3 to liters show work
  33. chemistry

    what is 124.5 when rounding to the 3rd significant figure?
  34. Chemistry

    What is the empirical formula of a hydrocarbon that contains 89.94% C by mass?
  35. Chemistry

    What is the empirical formula of a hydrocarbon that contains 89.94% C by mass?
  36. Chemistry 12

    How do we determine the specific gravity of a solution? and what unit is it in?
  37. Chemistry

    What is the frequency of light having a wavelength of 5.6 micrometers?
  38. Chemistry

    Define the terms 'weak acid' and 'catenation'
  39. Chemistry

    How many grams does 0.500 moles of CuBr weigh?
  40. chemistry

    how many carbons in nonane are in the sp2 hybridization state
  41. Chemistry

    how many valence electrons does a carbon radical possess?
  42. chemistry

    find the density of ethyl alcohol if 80.0 cm^3 "weighs" 63.3g.
  43. Chemistry

    What is the oxidation number of chromium in K2Cr2O7? I know that K = 1 O=-2 so 7*-2=-14 I do not know what to do now. Thank you for your help!
  44. chemistry

    which is the more active metal Co+Cr(NO3)2....no reaction
  45. Chemistry

    What is the percent zinc in Zn(NO)3 2xZn/189.41]=34.52% am I right
  46. chemistry

    how many moles of H2SO4 are required to react with 2.63 mol of AL
  47. Chemistry

    What is the total number of orbitals having n = 5 and ℓ = 3? A. 3 B. 5 C. 7 D. 9 E. 10
  48. chemistry

    IF YOU HAV 1.40 MOLES OF H2O HOW MANY OF NH3 CN BE PRODUCED.
  49. chemistry

    how many grams of CaO can form if 82.o g of CaCO3 decomposed
  50. Chemistry

    Is C12H22O11 soluble in water and is it ionic or a acid?
  51. Chemistry

    Calculate [H3O+] and [OH-] in 0.22 M KOH(aq). This is a strong base.
  52. CHEMISTRY

    Why must an organic layer be washed with NaOH?
  53. chemistry

    Calculate the molality of a 10% H3PO4 solution in water.
  54. chemistry

    How do i find the weight % of sulfate if I am given the mass?
  55. chemistry

    what are the three modes of expression of percentage concentration?
  56. chemistry

    The pH of 6.0 M KOH is 13.78. What is the hydrogen ion concentration of this solution
  57. chemistry

    What is the origin of homochirality in amino acids and sugars?
  58. Chemistry

    How many kilocalories are released by freezing 4.6 moles of H20?
  59. Chemistry 121

    What is the lewis dot structure of C2H5F?
  60. chemistry

    Given 6.00 L of N2 at -25 degrees C. Find Vol in L at 100K
  61. Chemistry

    What is the molar concentration of the standard KMn04 soultion?
  62. chemistry

    how would I draw the expanded formula for isopropylcyclopropane?
  63. chemistry

    Calculate the volume of 1.60 in milliliters that contains 6.00 of solute.
  64. chemistry

    Hi everyone, Why are metals more reactive in acids? Thanks
  65. Chemistry

    What does it mean when we say that KHC8H4O4 is not hygroscopic ? thank for helping~
  66. chemistry

    in saturated sugar solutions what is the solute? what is the solvent?
  67. chemistry 1211

    What is the mass of a ball with a velocity of 35.1 m/s and a wavelength of 8.92 x 10^-34 m
  68. Chemistry

    How many molecules (not moles) of NH3 are produced from 8.92×10−4 g of H2?
  69. Chemistry

    What is the molecular weight of 30% aqueous nitric acid?
  70. Chemistry

    Can you help me arrange P,Mg,N,Br,K in order of incrasing metallic character. Thank you.
  71. chemistry

    how many mL of 0.15 M NaOH solution are required to neutralize 35.00 mL of 0.22 M HCl
  72. chemistry

    what is the concentration of the hydroxide ion in an acidic solution?
  73. chemistry

    what is the pH of a solution that has a H+ concentration equal to 1.76 x 10-5M? I got 4.75 is this correct
  74. chemistry

    what is the ph of a solution that has [H] = 0.0045 can you show steps pls
  75. Chemistry

    How many moles of gas would be in 2.0 L of oxygen at STP?
  76. Chemistry

    Does helium have a smaller volume than hydrogen?
  77. chemistry

    How many liters of base will neutralize 1 liter of acid?
  78. Chemistry

    Condensation is considered an exothermic process is this true?
  79. Chemistry

    Which electron configuration best represents bromine?
  80. chemistry

    why is NO equal to nitrogen oxide isn't the charge of N ion +3?
  81. chemistry

    Balancing redox equations reactants: Cu, NO3
  82. Chemistry

    how many moles of o2 are needed to produce 3.91 mol fe2o3
  83. chemistry

    how many half lives will it take for 50 g of 99Tc to decay to 6.25 g?
  84. Chemistry

    A 0.39 M solution of a weak acid is 3.0% dissociated. Calculate Ka.
  85. Chemistry

    Calculate the pH of a 0.053 M (C2H5)2NH solution (Kb = 1.3 10-3).
  86. chemistry

    Calculate the pH of a 0.063 M (C2H5)2NH solution (Kb = 1.3 10-3).
  87. chemistry

    how do i change 2866.0 J to kJ/mol? can someone please help me?
  88. chemistry

    2. What is the density of propene gas measured at 2.5 atm and 47 C?
  89. chemistry

    Air dry weight of MgNH4Po4 * 6 H2O
  90. chemistry

    What is the wavelength of a 2500 kg truck traveling at a rate of 70 km/h?
  91. chemistry

    how would you prepare 300 ml of a 10% CaCl2 solution (w/w)?
  92. chemistry

    What is the electron-domain (charge-cloud) geometry of
  93. Chemistry

    Which is a polar covalent bond? PbCl2 or CS2?
  94. Chemistry

    20 degrees C is 6 g Cu So4/25 g H2O is this saturated or unsaturated?
  95. chemistry

    The pH of an HCl solution is found to be 1.74. Therefore the [H3O+] is:
  96. chemistry

    You have a 0.0825 M solution of HCl. You expect the pH to be
  97. chemistry

    Phenolphthalein turns __________ when the solution is basic.
  98. chemistry

    What is the mass percent oxygen in the compound NaNO3?
  99. chemistry

    pH is defined as 10^-log [H3O+] True or False
  100. chemistry

    How many grams of na cl are required to make 500ml of a 0.65 percent w/v
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