chemistry! URGENT

61,843 results, page 46
  1. chemistry

    what is the lewis structure for N-bromosuccinimide?
  2. chemistry

    Is CF4 polar or nonpolar?
  3. Chemistry

    How do I do molarity,molality,and normality
  4. Chemistry

    N2(g) + 3H2(g) ⇌ 2NH3(g) ΔH° = −92 kJ ΔS° = −0.20 kJ/K Which of the given is correct about the ΔG° at 35 °C? A. 30 kj B. -62 kj C. 62 kj D. -30 kj
  5. chemistry

    how to convert ethane to propanone? Thank you!!!!
  6. chemistry

    I need an edible suspension for a project i am doing.
  7. chemistry

    what is the anion and cation of Na2CrO4
  8. Chemistry

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

    what mass of sodium chloride contains 4.59*10^24
  10. Chemistry

    What is the purpose of a nuclear reactor?
  11. chemistry

    How many moles of permanganate are in 5.93 L of a 3.81 M solution?
  12. Chemistry

    2so2+o2= how many moles of so3
  13. chemistry

    what is the anion and cation of Na2CrO4
  14. Chemistry

    What is the heat of fusion of water?
  15. Chemistry

    What is the stoichiometry of elements in c2h6
  16. Chemistry

    What happens to the pH of an acidic solution when it is heated
  17. chemistry

    What is the mass of 3.22mol of ethane
  18. chemistry

    What is the Na+ concentration of 2.85 M sodium sulfate?
  19. Chemistry

    HNO3(aq)+Li2S(aq) produces ?

    Name of CH3CH(Br)CH=CHCH(CH3)2.
  21. Chemistry

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

    how can you tell if a reactant is being oxidized or reduced
  23. Chemistry

    What is the three dimensional structure of methane? Why?
  24. chemistry

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

    Why can water dissolve so many substances?
  26. Chemistry

    What is the electron configuration of 3s23p4?
  27. Chemistry

    What is the formula for measuring turbidity?
  28. chemistry

    how to prepare 0.216M of 37%benzaldehyde
  29. chemistry

    calculate the valume of 200g og h2
  30. chemistry

    help balance HNO2+HNO3
  31. chemistry

    when will a displacement reaction not occur?
  32. chemistry

    how many moles of platinum are equivalent to 1.20 x 10^24
  33. chemistry

    how many moles in 100g of each.. its for phosphorous
  34. Chemistry

    (x)/(.00125-x)(.00000025-x)=Kc How do I solve for x or Kc?
  35. Chemistry

    What is 17.4 psi converted to atm?
  36. Chemistry

    How do you calculate the concerntartion of vinegar?
  37. Chemistry

    What is the theoretical molarity value of HCL
  38. chemistry

    Why is ice used during the sublimation process?
  39. chemistry

    Which is more ionic LiF or NaF and why
  40. chemistry

    ch3o what is functional group
  41. chemistry

    calculate the pH of 5M aqueous ammonia. Given kb=1.8 x 10^-5
  42. chemistry

    is iron sulhide malleable
  43. chemistry

    need to convert 5.26g/cm3 to m3
  44. Chemistry

    How many moles are present in 5g of NaOH.
  45. chemistry

    what is the molarity of the KCI solution.
  46. Chemistry

    what is the density that has a mass of 77.0 g and a volume of 36 mL?
  47. chemistry

    what is the difference between a nanocomposite and a nanotube?
  48. chemistry

    what are two regions make up all atoms?
  49. Chemistry

    Does 1cm^3 equal to 1liter???
  50. chemistry

    for a given reaction, the activation ener
  51. chemistry

    how do you find how many hydrogens there would be in 2,5,6 trimethylnonane?
  52. chemistry

    stable nuclides are those whose N/P ratio is a) >1 b)<1 c)2 d)1
  53. Chemistry

    0.001N NaoH calculate the ph
  54. chemistry

    how do you do electron dot diagrams?
  55. Chemistry

    What happens to an electron when a photon hits it?
  56. Chemistry

    Calculate the pH of 30.0 mL of 0.025 M NaOH
  57. Organic Chemistry

    What is the chemical name for C7H13O?
  58. Chemistry

    Can someone please help me with these chemistry questions...I just don't get it! 1. Using the following elements, rank them in order of increasing melting points, based on the periodic trend for melting point: Sr, Mg, Be, Ba? Would it be Be, Mg, Sr, Ba or
  59. Chemistry

    Chemistry equilibrium? Consider the reaction 2NO(g) + O2(g) = 2NO2(g) at 430C an equilibrium mixture consists of 0.020 mole of O2, 0.040 mole of NO, and 0.96 mole of NO2. Calculate Kp for this reaction given that the total pressure is 0.20 atm. I used
  60. Math

    Can you please check my answers? Thank you! 18 out of 25 people love chocolate what percentage of people do not love chocolate? I got 28% 15% of the Chemistry class did not pass their chapter 7 test if the class has 38 students how many students did not
  61. Ven diagram

    70 students are stydying physics mathematics and chemistry. 40 students study mathematics, 35 study physics and 30 students students chemistry.15 students are studying all the subjects. How many students are studying exactly two of the subjects?
  62. Chemistry

    E=hv E=energy h= Planck's constant =6.626 x 10^-34 v= frequency 1. What is the energy of light having a frequency of 2.28 x 10^12? ( I do have an answer for this but I'm not so sure about it.) 2.What is the energy of light with a wavelength of 2.18 x
  63. Clinical Chemistry

    I have 2 questions relating to clinical chemistry... 1st: I have no idea where to even start with this. It seems like it should be simple, but I have no clue. The question is... "In serum, about 55% of total serum calcium is bound. The measurement of
  64. Chemistry

    We have been getting numerous questions like this on assignments and I can't figure them out. Its like I know that there some way connected but I can't figure it out. This is for Chemistry in highschool and its likea review and so they are not going over
  65. Chemistry

    You do it by finding Uuh in the periodic table and knowing that it will have chemical properties that are similar to those in the group with it. Here is a periodic table on the web. Find element #116 and observe the other elements in the same group (O, S,
  66. chemistry

    How would I idenify alcohol from other functional groups?
  67. Chemistry

    KOH + KHP --- balanced equation???
  68. Chemistry

    How would you balance this equation Mg(s)+FeCl3(aq)=Fe(s)+MgCl2(aq)
  69. chemistry

    I am having trouble balancing this equation: C6 H12 06 + O2 = C7 H8 + O2 Can you please help? Thanks
  70. Chemistry

    What is the amount in moles of 3.55g of zinc(Zn)
  71. chemistry

    How many molecules of lactose are there in one liter of buttermilk?
  72. chemistry

    What is the formula weight for Epsom salt?
  73. chemistry

    How much energy is absorbed to change 7.25 g of ice at -3 C to 25.5C?
  74. Chemistry

    What is the pH of a solution with a concentration of 4.7 × 10-4 molar H3O+?
  75. chemistry

    How do you express the number 6 as two significant figures?
  76. chemistry

    difference between solution and pure substance
  77. Chemistry

    What is the representative particle for a salt, nacl2?
  78. Chemistry

    What is wrong with the names 2-ethyl-4 and 4-dimethylpentane?
  79. Chemistry

    What three conversion factors are often used in mole conversions?
  80. Chemistry

    Can someone explain to me what an intermediate product is and give me and example?
  81. chemistry

    What is pH of 0.1M solution of NH4Br, if the pKb of NH3 is 4.74?
  82. chemistry

    what is the molality of 18 g NaCl in 200 g of H2O?
  83. Chemistry

    Prepare 250 cc n/10 KMno4 solution
  84. chemistry

    convert 725mm Hg into equivalent kPa
  85. Chemistry II

    Are mixing and separation increases in entropy?
  86. Chemistry

    What is the specific gravity of alcohol having a density of .79 g/mL?
  87. chemistry

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

  89. chemistry

    Which of the following does NOT belong with the others? A. HNO3 B. H2SO4 C. H2CO3 D. OH- I think D
  90. Chemistry

    How much would 3.45* 10^21 C12H22 O11 molecules weigh
  91. chemistry

    What would happen if O2 were added to N2(g) + O2(g) 2NO(g) at equilibrium?
  92. Chemistry

    find the volume of 56.4 g of a substance that has a density of 2.42 g/mL
  93. Chemistry

    150g silver sulfide to moles.
  94. chemistry

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

    How calculate concentration by using molecular weight.
  96. Chemistry-please help!

    What is the chemical formula for alluminium hydroxide?
  97. chemistry

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

    I am having trouble balancing this equation: C6 H12 06 + O2 = C7 H8 + O2 Can you please help? Thanks
  99. Chemistry

    what is the oxidation number of Chlorine in KCIO4???
  100. chemistry

    What is the structural formula of malathion,parathion?