chemistry! URGENT

61,409 results, page 41

  1. chemistry

    how can we produce ethane from methane?
  2. chemistry

    Descibe the frasch process
  3. Chemistry

    how many atoms of S are in 9.2 moles of Na(SO4)2?
  4. Chemistry

    How do i calculate the pH of 0.0020mol/l HCl
  5. Chemistry

    What's the formula for Li2Co3+Co(NO3)3(aq) ->
  6. Science - Chemistry

    How many atoms in a diamond.
  7. chemistry

    How can diamond be formed artificially
  8. CHEMISTRY

    Why is I- a stronger reducing agent than F-?
  9. chemistry

    Is NH4+ po;ar or non polar?
  10. Chemistry

    How to convert 1.08g/ml to volume in ml?
  11. Chemistry

    Equation of Mg(OH)2 (aq) + KOH (aq) gives you what ?
  12. Chemistry

    What is Anta basic substance?
  13. Chemistry

    What is the oxidation state of Cr in K2Cr2O4?
  14. Chemistry

    How Many Atoms Are There In 10grams Of Carbon
  15. chemistry

    C2O4-- + I- + H+ ---> I2+CO2+H2O
  16. CHEMISTRY

    BLEACHING AGENT OF CHLORINE(Cl)
  17. Chemistry

    The solubility of copper sulphate at 0 C
  18. Chemistry

    Calculate normality of 27% H2SO4
  19. chemistry

    No. Of atoms in 12g of Mg is equal to
  20. chemistry

    How would you prepare 1. 100 ml of 0.20 M Ca(OH)2 from 0.50 M Ca(OH)2
  21. Chemistry

    pressure of Ne in sealed container
  22. Organic chemistry

    Nitrobenzene + KOH >>>>> ???
  23. Chemistry

    What is the pH of a 0.36% by mass HCl?(density=1.0 g/mL)
  24. chemistry

    What is the mass of 3.22mol of ethane
  25. Chemistry

    What is the ionic compound of SrMnO4
  26. Chemistry

    0.001N NaoH calculate the ph
  27. chemistry

    How many unpaired electrons for cr3+
  28. chemistry

    How I doing electrolysis of aluminium cloraed?
  29. chemistry

    Q: Find pH of 0.2 M of CH3COONa + 0.1M of CH3COOH?
  30. chemistry

    how to make 400 ml of 5% w/w h2so4
  31. chemistry

    why photosynthesis is considered as endothermic?
  32. Chemistry

    what is the OH- concentration of 0.08 M solution of CH3COONa
  33. chemistry

    why glycerol is used in cosmetics?
  34. chemistry

    ph of 0.001M H2X OF 50%dissosiation
  35. Chemistry

    How many meters are there in one picometer?
  36. Chemistry

    Why N2(g) has a lower boiling point?
  37. chemistry

    What is the pH of a weak acid solution that has an [H*] of 2.1×10^6 M?
  38. unt

    chemistry ---- 77=25 to the x power. Can anyone assist.
  39. chemistry

    Why is 5% NaOH insoluble in HCl?
  40. chemistry

    9276mL/s^2= gals/hr Is it 3.174x10^8
  41. chemistry

    How many moles of permanganate are in 5.93 L of a 3.81 M solution?
  42. chemistry

    what do you use a pipestem triangle for
  43. Chemistry

    What is saponification (soap making) ?
  44. Chemistry

    How many molecules are there in 6.8 grams of CO2
  45. chemistry

    DOES NO-3 VIOLATES OCTET RULE ?
  46. Chemistry

    What is saponification (soap making) ?
  47. chemistry

    Symmetry and group theory
  48. Chemistry

    [oh-]=3.0*10^-2M Is it a base neutral or acidic
  49. Chemistry

    Calculate molarity 9.8g r 500 ml
  50. chemistry

    how many kilograms are in one teragram
  51. chemistry

    the number of orbital of the d shell is
  52. Chemistry

    how many mols of gas will occupy 6.75 m^3 at 65°C and 3.28 x 10^5 Pa?
  53. chemistry

    balance this equationwiththerealanswer Zn(s)plusHclisequaltoZncl2plusH2
  54. Chemistry

    How do you find a reaction order?
  55. chemistry

    what is the correct name for 3-propylheptane?
  56. Chemistry

    Is the molecular weight of O2 15.999u or 32?
  57. Chemistry

    Why equilibrium is constant less than 1?
  58. chemistry

    What are the applications coordination compounds
  59. Chemistry

    Determine the [OH−] in a 0.42 M solution of HClO4
  60. Chemistry

    What are radioisotopes? and Are they harmful to humans?
  61. Chemistry

    What are some uses for radioisotopes?
  62. Chemistry(Please respond)

    A study of the system, H2(g) + I2(g) == 2 HI(g), was carried out. Kc = 54.9 at 699.0 K (Kelvin) for this reaction. A system was charged with 2.50 moles of HI in a 5.00 liter vessel as the only component initially. The system was brought up to 699.0 K and allowed to reach ...
  63. Physics Urgent please help

    At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = -c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially has a horizontal ...
  64. Physics pls anyone can help me? its urgent

    At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = -c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially has a horizontal ...
  65. Urgent!

    Project: Data Analysis The following chart lists the average low, average high, record low, and record high temperatures for the month of April in Denver, Colorado. Day Average Low Average High Record Low Record High April 1 32°F 58°F 6°F 78°F April 2 32°F 58°F -3°F 79...
  66. chemistry

    Online chemistry lab preparing standards help? I was told to prepare some standard for a chemistry lab and here where the instructions: Obtain a solution of known phosphate concentration. In this lab we will use (1.e-002M) potassium dihydrogen phosphate, KH2PO4. Note the ...
  67. Chemistry

    Really hard Chemistry question that I need help with. Any assistance would be really helpful.? When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume of N2 gas corrected ...
  68. chemistry

    Determine the number of bromide ions in solution when 4.23 g of magnesium bromide and 1.21 g of potassium bromide are dissolved in 120mL of water. Please explain not sure how to even start this problem, thanks! chemistry - DrBob222, Wednesday, December 8, 2010 at 7:57pm ...
  69. Chemistry

    Dear sir, madam, I am having a little problem with the solution my chemistry book gives on the following problem: We have a person whose body vitamine C concentration decays according to the following formula: 1500*0,974^t. Question A is no problem, but then question B: "...
  70. Managerial Economics- URGENT

    The Blue Dragon Restaurant is a new Chinese Restaurant in town. As the only Chinese restaurant in the area, it faces the following daily demand curve: Q = 500 – 25 P Where Q is the number of meals it serves per day and P is the average price of its meals. The cost function ...
  71. chemistry help!

    I have a chemistry test tomorrow and I'm trying to study but none of these questions in the book make sense to me:( Help! 1. Commericially available concentrated sulfuric acid is 95% H2SO4 by mass and has a density of 1.84g/mL. How many milliliters of this acid are needed to ...
  72. chemistry

    Hey guys please help me answer these chemistry questions.? 1. can a strong acid be diluted. explain in detail 2. can a weak acid be diluted. explain in detail 3. how does your observation of sunlight change when you place two different concentrations of food colored solution ...
  73. Chemistry II

    Are mixing and separation increases in entropy?
  74. Chemistry

    how do you finish the equation for Al(NO3)3 + KOH
  75. chemistry

    how does the temperature affect the density of an object?
  76. chemistry

    how many molecules are there in 450 grams of FeF3?
  77. Chemistry

    What is the formula for Iron(III) sulfide? And why?
  78. chemistry

    describe the structure of ionic compounds
  79. Chemistry

    which is a strong electrolyte KCl or HCH3OOH
  80. chemistry

    what is the name of the polyatomic ion (C2O4)-1?
  81. CHEMiSTRY

    whats the chemical composition of steam?!?
  82. Chemistry

    How do I figure out the mass of a skittle?
  83. Chemistry

    How many valence electrons does phosphourous have
  84. Chemistry

    1. How is the rate affected by doubling the concentratino?
  85. Chemistry

    A balanced equation for CuSO4+NaCl--> ???
  86. CHEMISTRY

    what is the oxidation state of chlorine in Cl2O7
  87. chemistry

    WHAT IS THE MASS OF 0.200 mol of C9H8O4?
  88. chemistry

    What is the oxidation state of S in Rb2SO4? is the charge = 0?
  89. Chemistry

    what is the specific heat for Al2O3 as a solid?
  90. chemistry

    what type of compound is benzoic acid
  91. intergrated physics and chemistry

    how is work expressed
  92. chemistry

    Is NH4+ a polar or nonpolar bond?
  93. Chemistry

    What are some practical applications of chromatography?
  94. chemistry

    What is dipole moment of BeCl2? and hybidization?
  95. chemistry

    which of the following will result in a chemical change?
  96. chemistry

    the condensed formula for 5-propylnonane and 3,4-diethylhexane
  97. chemistry

    How do I make a 6M NaOH solution? (25mL)
  98. chemistry

    How do atoms bond to form molecules?
  99. chemistry

    how to know clarify if the subtance is polar or nonpolar?
  100. Chemistry

    Provide the units for each of the terms of q=mCp^T Thanks!
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