chemistry! URGENT

61,552 results, page 46

  1. chemistry

    If I was 100% water what would my volume be?
  2. chemistry

    which solution formed only by gases
  3. Chemistry

    Is NaHCO3 a polar aprotic solvent?
  4. chemistry

    how many moles are in 5 grams of no2 molecules?
  5. chemistry

    convert 4.37 moles of NaOH to grams.
  6. chemistry

    How do I calculate the molecules of 3.52 moles CO2?
  7. chemistry

    What is the difference between the representations Mg and Mg 2+? Please help!!!
  8. chemistry

    what is the lewis dot structure for CH3OH
  9. CHEMISTRY

    Complete these bronsted lowry reactions HS^- + H^+ ---> HS^- + OH^- ---->
  10. chemistry

    What is the name of the following compounds? A)CO B)HCI2O
  11. chemistry

    How many grams of NaOH are there in 2.5L of a 0.343M solution?
  12. chemistry

    what are the halogens at 25 degrees celcius and 1atm?
  13. Chemistry

    What is the empirical formula of caffeine (C8 H10 N4 O2)? How do I get it? Thanks
  14. Chemistry

    what is the pH of 0.316 M KC6H5O? what is the pH of 0.245 M CH3NH3I?
  15. chemistry

    calculate pH of 0.1M NH4^- of 100ml of that solution?
  16. chemistry

    calculate pH of 0.1M CH3COOH of 100ml of that solution?
  17. chemistry

    How many grams of NaOH are there in 2.5L of a 0.343M solution?
  18. CHEMISTRY

    Benzene equals 78.11 grams/mole
  19. chemistry

    What's the particle diagram of Carbon monoxide? Thank you
  20. Chemistry

    What is the purpose of baking a chemical pie?
  21. chemistry

    how many grams of oxygen are in 560g of ribose?
  22. chemistry

    Explain what a limiting agent is and how to identify it
  23. Chemistry

    Calculate the concentration of OH-(aq) in a solution which [H+] = 100 x [OH-]. Thank you.
  24. chemistry

    How many grams of NaOH are there in 2.5L of a 0.343 M solution?
  25. Organic Chemistry

    What is the substrate of the enzyme amylase?
  26. chemistry

    Calculate the pH in a 0.00500 solution of NaOH.
  27. chemistry

    What is the molar mass of one LA monomer?
  28. Chemistry

    what was the first sample in the ChemQuandry and where is it used
  29. CHEMISTRY

    How to determine the molarity of a 1.8% NaCl solution.
  30. Chemistry

    What is the balance equation for: (NH4)3 + MgCl2
  31. chemistry

    Mass of "KHP" to neutralize 18 mL of 0.20 M NaOH?
  32. Chemistry

    What unit is barometric pressure measured in?
  33. chemistry

    what is the pH of a 0.100 M solution of HA if 7% of the acid is dissociated?
  34. Chemistry

    the weak acid HQ has a pKa of 4.89. calculate the [OH-] of .85 M HQ.
  35. chemistry

    find the pK for the following ionization constants, K= 1.8*10^-5 and 1.1*10^.2
  36. chemistry

    What do you expect when you mix 1M Na2SO4 with 1M CaCl2?
  37. Chemistry

    which of the following has the largest radius A. CI- B. S2- C. K+ D. Ar E. Ca2+
  38. chemistry

    What is the hybridization of trioxo nitrate v ions ?
  39. Chemistry

    What is the percentage of potassium chloride to oxygen?
  40. Chemistry

    What is the percentage of potassium chloride to oxygen?
  41. chemistry

    number of moles of Cl in 2.7 mol CaCl2
  42. Chemistry

    How many moles of acetic acid are there in 25 mL container?
  43. chemistry

    How many grams of NaOH are there in 2.5L of a 0.343M solution?
  44. chemistry

    What reagent converts sodiumethanoate to methane?
  45. chemistry

    What reagent converts sodiumethanoate to methane?
  46. chemistry

    What are the concentrations of H3O+ and OH- and what is the pH of a 0.15 M solution of Na2CO3 (at 25 °C).
  47. chemistry

    3 molecule of water contains how many grams?
  48. chemistry

    find the concentration of HCL if the pH of the solution is 0.50
  49. chemistry

    How many mol of Oxygen are in 45.9 grams of CO2?
  50. chemistry

    What are the main contaminants likely to be in your soap?
  51. Chemistry

    What is the composition of 0.1M sodium acetate buffer,pH 5.00?
  52. chemistry

    Can I get a poem on acids,bases and salts?
  53. chemistry

    how many ml of 6m hcl aq are required to react with .10g of mg?
  54. chemistry

    what is the mass of a single oxygen autom
  55. chemistry

    is air heavier than carbon dioxide
  56. chemistry

    there are __ reprensentative particles in a mole of any substance
  57. chemistry

    what is the molarity of the Cl- ions at the stoichiometric point
  58. Chemistry

    What quantity of HNO3 can be neutralized by 0.1L of 0.50 m NaOH
  59. Chemistry

    What quantity of HNO3 can be neutralized by 0.1L of 0.50 m NaOH
  60. chemistry

    what is activation energy for combustion of sawdust
  61. Chemistry

    How many moles of N2 can be in a balloon with a volume of 6.00 L at STP?
  62. chemistry

    How many grams of Na2CO3 are required to Na2S2O3
  63. chemistry

    How many grams of Na2CO3 are required to Na2S2O3
  64. CHEMISTRY

    WHAT MASS OF WATER CAN BE PRODUCED FROM 30.0G OF AMMONIA
  65. Chemistry

    Which of the following substances will oxidize Sn(s) to Sn^2+? a) Cu(s) b) Cl2(g) c)Cl-(g) d) Mg(s) e) Cu^2+(aq) f) Mg^2+(aq)
  66. chemistry

    how many atoms are in 0.320 moles of aluminum?
  67. chemistry

    how many moles of N2 (g) re present in 1.00 of N2 (g) at 100 c and 1 atm?
  68. Chemistry

    how do you find PH of 0.010 M HNO3 solution?
  69. chemistry

    write the products of these combination reactions: K + O2 ---> Ca + S ---> F2 + Al --->
  70. Chemistry

    What's the molar mass of AuCl3 x 2H20?
  71. Chemistry

    Why do tomatoes grow better in a greenhouse?
  72. Organic Chemistry III

    What is a Chaser Solvent?
  73. Chemistry

    How many mL of Water are made from 4 moles of HNO3?
  74. CHEMISTRY

    What atomic orbital has the quantum numbers n = 3, l = 1, ml = -1?
  75. chemistry

    What are the quantum numbers for a 3d atomic orbital?
  76. Chemistry

    What is the solubility of Ca(OH)2 at a pH of 4.802 Ksp of Ca(OH)2 = 6.500*10-6
  77. CHEMISTRY

    What is the meaning of negative couplage in NMR
  78. chemistry

    How many moles of chloroethylene contain 5.47×10^26 molecules?
  79. Chemistry

    How do you figure out hydrate formulas?
  80. chemistry

    Give the ph value to get anatase tio2
  81. Chemistry

    What do you think cause H2O2 to decompose rapidly
  82. Chemistry

    What do you think cause H2O2 to decompose rapidly
  83. chemistry

    How many grams of O2 are required to burn 13.0g of acetylene?
  84. chemistry

    how many grams of aluminum are in 25.0 ml of a 14%(w/v) solution of Al2O3?
  85. chemistry

    how does an ionic solute dissolve in water?
  86. Chemistry

    How many moles of SiO2 will contain 48 g of oxygen?
  87. Chemistry

    What is the pH of a 0.0250 M solution of HCN? Ka = 4.0x10^-10
  88. organic chemistry

    calculate the pH of a 1.25 x 10^-3 M HNO3 solution
  89. Chemistry

    what is the theoretical yield of Sodium Hydroxide
  90. Chemistry

    What is the theoretical yield of PbI2 with 25.0 g of Pb(NO3)2?
  91. Chemistry

    How many moles of O2 are present in 67.2 L of O2 gas at STP?
  92. Chemistry

    What is the pH, pOH [OH-] and [H+] for 0.000535 M hydrosulfuric acid?
  93. Chemistry

    Calculate normality of normal saline at 0.85%?
  94. Chemistry

    what is the pH range of the buffering region? is that when ph=pKa?
  95. Chemistry

    150g silver sulfide to moles.
  96. Chemistry

    What happens when soda ash is heated?
  97. chemistry

    What is the structural formula of malathion,parathion?
  98. chemistry

    What is the structural formula of malathion,parathion?
  99. chemistry

    please me,,,what is the structural formula of endosulfan?
  100. chemistry

    Find the entropy of mixing of 80% N2 and 20% O2 in air
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