chemistry! URGENT

61,546 results, page 78

  1. Chemistry

    What is the density of a solution of 9.0% Calcium chloride dissolved in water?
  2. chemistry (lab)

    how or where does the hat energy produced by the candle come from ?? help me!
  3. Chemistry

    What mass of KBr is required to prepare 8.oo L of .400 M solution?
  4. organic chemistry

    how to find ethyl benzoate from methyl benzene
  5. chemistry

    Calculate the molality of CsCl in a 19% by mass aqueous solution.
  6. Chemistry

    How can you predict the heat of combustion for a substance with no carbon atoms?
  7. chemistry

    a piece of copper has a mass 740kg,what is the units in grams
  8. Chemistry

    How many moles of H_2 are needed to produce 13.27g of NH_3?
  9. science

    what is the best way to study for my chemistry test tomorrow
  10. chemistry

    chemical formula for potassium hydrogen sulfide? is it KHS?
  11. Chemistry

    What is the reactant when sugar is mixed with water? Also, what is the product?
  12. chemistry

    What is the valency and outer most electrons in scandium to zinc?
  13. Chemistry

    Would Ti3(PO4)2 be titanium phosPHATE or phosPHIDE
  14. chemistry

    how do you name halogens as a functional group. like CH3-Cl
  15. Chemistry

    What is the pH of a 0.50 M solution of NaNO2 if the Ka of H20x = 4.5 x 10^-4. I know that you use the Ka to find Kb and solve from there, but why?
  16. chemistry

    Identify a haloalkane and describe the manner in which it functions as an anesthetic.
  17. chemistry

    balanced equation mg+ pbcl2---mgcl2+pb F+NaBr--FBr+Na
  18. Chemistry

    if there are 8.3grams of Mg used, how many moles of MgO can you expect to be produced?
  19. chemistry

    A sample of oil has a mass of 65g and a volume of 80.0 mL. What is the density?
  20. chemistry

    How many sodium ions are present in 325 mL of 0.850 M Na2SO4?
  21. chemistry

    How many photons are produced in a laser pulse of 0.324 J at 631 nm?
  22. chemistry

    how much heat is released when 42.3 grams of ammonia is produced?
  23. Chemistry

    What mass (g) of KHP is required to neutralize 10.00 mL of 0.1092 M NaOH?
  24. chemistry

    If i have .0030M BaSO4 how do I calculate the moles of sulfate?
  25. Chemistry

    The volume in cubic meters of a 141541 kg blue whale?
  26. chemistry

    What is the mass (in grams) of 9.81 × 1024 molecules of methanol (CH3OH)?
  27. chemistry

    Why would benzene boil at 100C instead of 80C?
  28. chemistry

    what is the balanced molecular formula and state for this equation Mg+Cr(C2H3O2)3=
  29. chemistry

    how would you separate a mixture of NaCl, Fe pellets and water
  30. chemistry

    how would you separate a mixture of NaCl, Fe pellets and water
  31. chemistry

    2C6H6(l) + 15O2(g) --> 12CO2(g)+ 6H2O(g) how to calculate the ratio?
  32. Chemistry

    How many moles of KBr are present in 120mL of a 0.290M solution?
  33. Chemistry

    Why do acids and bases form ions when they dissociate in water
  34. chemistry

    5.22kg of H2 reacts with 31.5kg of N2, which one is the limiting reactant?
  35. chemistry

    How many grams of C3H18O2 contain 7.9 e25 atoms of Carbon?
  36. chemistry

    how to find ph of aqueous solution if your only given the concentration
  37. chemistry

    why is the bond length an average rather than a fixed number ?
  38. Chemistry

    how many grams of hydrogen occupy 40 ml at 300.15 K and 710 torr?
  39. chemistry

    What mass of sodium bicarbonate reacts with 225 mL of 6.00 M HCl?
  40. Chemistry

    which one of the following cannot disproportionate cl-, clo3-, cl2, cu+, fe2+
  41. Chemistry

    How many milliliters of 2.50 M KI must be diluted to make 365 mL of 0.432 M KI?
  42. chemistry

    what is free energy for h2+br2=2hbr at 25 degrees celcius
  43. chemistry

    what is the normality of sodium carbonate of 55 grams in a solution of 4000 ml
  44. Chemistry

    What element forms an ion with an electronic configuration of [Xe] and a –2 charge?
  45. Chemistry

    What happens to the size of an atom when it becomes a negative ion? Why?
  46. Chemistry

    What happens to the size of an atom when it becomes a negative ion? Why?
  47. chemistry 101

    How intermolecular forces is responsible for the phases of matter?
  48. Chemistry

    What is the generic outer electron configuration for the alkali metals?
  49. Chemistry

    12 grams of salt dissolved in 650 mL of water has what concentration?
  50. chemistry

    How many grams of K2HPO4 are there in a teaspoon? Tablespoon? How do I figure this out?
  51. Chemistry

    How many moles of propane are contained in a 5.00 L tank at 450 torr and 25°C?
  52. Chemistry

    How do I change 3,3,4,4,5,5-hexamethyl-1-hexyne into it's molecular formula
  53. chemistry

    How many atoms of nitrogen are in the chemical formula N2O? A. 1 B. 2 C. 3 D. 4 I say A
  54. Inorganic Chemistry

    Name this compound: [Co(NH3)5Cl]Cl2
  55. chemistry

    describe the troubles of boilers when impure water is used
  56. chemistry

    how many atoms are in a sample of 175 g of sodium (Na)? 4.58 x 1024 or 1.42 x 1027?
  57. chemistry

    Calculate the molarity of 38.5 mL of 1.80 M HNO3 diluted to 0.130 L with water
  58. chemistry

    what are the three pure liquids produced by chemical reactions
  59. Chemistry

    Devise a test to distinguish between Cu2+ and Co2+.
  60. Chemistry

    Devise a test to distinguish between Cu2+ and Co2+.
  61. Chemistry II

    Devise a test to distinguish between Cu2+ and Co2+.
  62. Chemistry

    Devise a test to distinguish between Cu2+ and Co2+.
  63. Chemistry

    Devise a test to distinguish between Cu2+ and Co2+.
  64. chemistry

    compleat and balance this equation. Na2CO3+Mg3(PO4)2
  65. Chemistry

    Calculate the mass percent of a solution containing 10.5 of and 91.5 of H2O.
  66. chemistry

    calculate the amount (g) needed to make 25 ml of 0.1 m co(no3)2 6h2o
  67. Chemistry

    What's the linear density of body center cubic (0,1,1)of Molybdenum
  68. chemistry

    ph of 10 grams of sodium acetate and 100 mL of .5M acetic acid
  69. Chemistry

    What is the electronic geometry of a central atom with 4 electron pairs?
  70. Chemistry 3A

    how do i calculate the density of sulfur dioxide, SO2, at STP.
  71. chemistry

    What mass of chromium is contained in 50 ml of 6.55 M cr2(cro4)3? a. 85.2g b. 0.188g c. 68.1 g d. 17.0g
  72. chemistry

    What mass of chromium is contained in 50 ml of 6.55 M cr2(cro4)3? a. 85.2g b. 0.188g c. 68.1 g d. 17.0g
  73. easy chemistry

    what is the entropy of 10 molecules in a system of 100 boxes?
  74. Chemistry 3A

    a student weighed out 1.106g of KHP. How many moles was that?
  75. chemistry

    What is the pH of a saturated solution of silver hydroxide, given Ksp =1.56*10^-8
  76. chemistry

    Wat is the volume of a 200g object that has the. Density of 1.27L?
  77. Chemistry

    what is the magnitude and sign of the molar heat of vaporization of butane
  78. chemistry

    Wat is the volume of a 200g object that has the. Density of 1.27L?
  79. Chemistry

    What is the enthalpy of formation of 2C10H22+31O2=20CO2+22H2O
  80. chemistry

    How many different 5.00 d states does hydrogen have? please list them..
  81. Chemistry

    standard form of the equation KClo3->KCl(5)+02(g) for a project
  82. chemistry

    What's the equation written in a sentence for nh4no3(s)=n2o(g)+2h2o(g)
  83. chemistry

    When disaccharide beta is hydrolyzed, which monosaccharide units are produced?
  84. AP Chemistry

    Hi, what is the true cant hoff factor for MgO, and NaCl, and BeS. Thanks
  85. chemistry

    How much 6M HNO3 will be required to decrease the pH of 5000L solution of pH=9.6 to pH=3?
  86. chemistry

    can anyone give me 2 example of chiral molecules structure plz
  87. chemistry

    balance: CaCl2 + AgNO3 → AgCl + Ca(NO3)2
  88. Ap chemistry

    How to calculate initial concentration, preferably with a general example??
  89. chemistry

    what is the frezzing point of 21.6 grams of NiSO4 in 1.00 times 10^2 H2O
  90. Chemistry

    what type of reaction is AgF + CaCl2 --> AgCL + CaF2 ?
  91. Chemistry

    Why is AgCl not soluble in nitric acid while Ag3PO4 is?
  92. Chemistry

    at which temperature will water boil when the external pressure is 30 kPa?
  93. Chemistry

    Why is AgCl not soluble in nitric acid while Ag3PO4 is?
  94. chemistry help plz

    OH-OH-benzene ring-CH=CH-NH2 is anyone knows the name of this compound?
  95. Chemistry

    Rank the following atoms from highest to lowets energy: Ca, Be, Ba, C
  96. Chemistry

    (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?
  97. Chemistry

    (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?
  98. Chemistry

    (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?
  99. pharmaceutical chemistry

    what are the conditions when cathartics are properly used?PLEASE HELP ME.
  100. chemistry

    balance net Ionic solution AgNo3 + NaOH
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