chemistry! URGENT

61,729 results, page 30
  1. 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
  2. Math *URGENT

    Please give the answers and solutions for each. 1.If the second term is 2 and the seventh term of a geometric sequence is 64, find the 12th term. 2. Which term if the geometric sequence 18,54,162,486,... is 3,188,646? 3. Determine the geometric mean of 8
  3. cHEMISTRY

    wHAT IS THE SYMBOL FOR THE ION WITH 13 PROTONS AND TEN ELECTRONS? CAN U EXPLAIN HOW TO GET YOUR ANSWER, AND CAN YOU GIVE ME A WEBSITE THAT HELPS ME WITH CHEMISTRY 13 protons will be element with atomic number of 13. Look on the periodic table and see
  4. Chemistry

    I need serious help with 3 different chemistry problems: 1. If coal is assumed to be all carbon, carbon has a molecular weight of 12 lb-mass/lb-mol, and oxgyen (diatomic) has a molecular weight of 32 lb-mass/lb-mol, how much carbon dioxide (lb-mass/day) is
  5. Chemistry

    Hi, This is a challenge question for my intro chemistry class and I'd really like to do it. Its in 2 parts. 1. Consider a 2790-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within
  6. 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,
  7. mathematics

    in a class of 60 students, the number of students who passed biology is 6 more the number of student who passed chemistry. Every student passed at least 1 subject and 8 passed both subject. How many passed chemistry
  8. Chemistry

    A student finds a medallion which could be made of pure platinium or silver. IN order to find out what the medallion is made of the student takes the medallion to a chemistry lab. The student measures the density of the medallion as follows. The medallion
  9. CHEMISTRY

    I just took a chemistry midterm and our teacher let us keep the exam. I was wondering if you could let me know if I was right or wrong for the following questions. I can ask my professor later for details. Which of the following are best described as
  10. Chemistry

    2.36 x 10^4 s= ? days
  11. Chemistry

    What is a enantiomer?
  12. chemistry

    what is saponication
  13. chemistry

    what is mmHg?
  14. chemistry

    2.35*10^-4M,,Mg(OH)2 what is the pH of this solution
  15. chemistry

    For n = 2, one of the values of l is 0
  16. chemistry

    comparetheentrophybetweenco2gch4g
  17. chemistry

    WHat is a precipitate?
  18. Chemistry 12

    The [OH-] of a solution with a PH 5.75 is is it 5.6*10-9M?
  19. Chemistry

    Fe+o2+h2o->fe(oh)3
  20. chemistry

    about thermodynamics
  21. chemistry

    28.06 mL to grams
  22. chemistry

    What is the pH of 6.6 X 10^4 M HCL?
  23. chemistry

    What are the uses of azomethine?
  24. chemistry

    1000 mm = how many km
  25. chemistry

    .001 Ml= how many mL
  26. Chemistry

    Answer
  27. chemistry

    Al(oH)3+HcL=
  28. chemistry

    6.04g
  29. Chemistry

    THERE IS NOTHING WRONG WITH ME!!!!!!!!
  30. chemistry

    how many electrons can n=4 l=1 have?
  31. chemistry

    what is nitrolim and is uses?
  32. AP Chemistry

    what does pv/nRT tell you?
  33. chemistry

    44:65f
  34. Chemistry

    How many different f orbitals are there?
  35. chemistry

    what is 1.79 x 10^-20 in kJ/mol?
  36. chemistry

    science
  37. chemistry

    What is the pH of a solution if [H+] = 2.3 x 10–5 M?
  38. chemistry

    I got kc to be 0 but that has got be wrong
  39. chemistry

    what is an atom
  40. AP Chemistry

    The pH of a solution of Sr(OH)2 is 12.42. What is its (OH^-)
  41. Chemistry

    How do i solve [A]=[A]0 x e^-kt for k
  42. chemistry

    what is molality ?
  43. chemistry

    what is molality ?
  44. chemistry

    Al is the symbol for
  45. Chemistry

    If §¤= 1, what can you deduce about n? n=1 n>1 n¡Ã1 n<1 n¡1 If m§¤ = 3, what can you say about §¤? §¤=3 §¤>3 §¤¡Ã3 §¤<3 §¤¡3
  46. chemistry

    How does pH = 8.75 give (H^+) = 1.77 x 10^-9
  47. chemistry

    how would I name the compund Ca(OH)2
  48. Chemistry

    Find the Ph: of 7.01 x 10-5 M Ba(OH)2 thanks:)
  49. chemistry

    44:65f
  50. chemistry

    name 2 alkalis
  51. chemistry?

    why does Si-28 contain 14 neutrons?
  52. chemistry

    1228g/l to g/ml
  53. chemistry

    Ba Ba2+
  54. Chemistry

    What is C2H5OH?
  55. sammy

    chemistry
  56. Chemistry

    What is a supernatant
  57. chemistry

    AMU ?
  58. chemistry

    DOES Mg(OH)2 HAVE A pH greater than 7 or less than 7
  59. chemistry

    I say unsaturated. Am I right?
  60. chemistry

    Fe + K2CO3
  61. chemistry

    reinforcement??????????????????? help
  62. chemistry

    What is H+(aq) + –OH(aq) H2O(l)
  63. chemistry

    convert 3.0m to yd
  64. chemistry

    AuCI,(aq)+Ca(s)=
  65. chemistry

    46,318.97
  66. Chemistry

    Define a.m.u?
  67. chemistry

    what is cryogenetics
  68. chemistry

    i think I am not doing this part right (1/n5^2 - 1/n1^2)
  69. chemistry

    compare
  70. Chemistry

    what are dipoles?
  71. chemistry

    what's malleability
  72. chemistry

    What's an example of suspensionn?
  73. chemistry

    G=NEV
  74. chemistry 12

    what is the relationship between ka and kb? Kw=ka*kb
  75. chemistry

    how do you know that Al(OH)3(s) is a base?
  76. Chemistry

    hellop
  77. chemistry

    1.what are the functions of pH?
  78. chemistry

    Just wanted to say thank you very much for the help I got from everybody :)
  79. chemistry

    How does pH = 8.75 give (H^+) = 1.77 x 10^-9.
  80. CHEMISTRY

    WHAT IS ATOMICRADIUS
  81. chemistry

    What is periodicity.
  82. Chemistry

    Define a.m.u?
  83. CHEMISTRY

    The [OH1-] with a pH of 5 is
  84. chemistry

    what is fe+s+hcl=
  85. chemistry

    WHAT IS HS2SO4
  86. Chemistry

    What is 6.35 g divided by 6.02 x 10^23
  87. Chemistry

    When n=3, the possible values of l are: 5, 4, 3, 2, 1, and/or 0? How do you know?
  88. chemistry

    what is a catalyst
  89. chemistry

    why cant Na be used to prepare H2?
  90. chemistry

    When is there a need to determine G? A. When H > 0 and S < 0 B. When H > 0 and S = 0 C. When H > 0 and S > 0 D. When H = 0 and S < 0
  91. chemistry

    i HAVE A QUESTION
  92. chemistry

    what is a mole
  93. chemistry

    0.600 mL= L
  94. Chemistry

    How would you name the compound P4?
  95. Chemistry

    What is Enthalpy?
  96. chemistry

    saADFFF
  97. chemistry

    How many moles are there in 23.6g Ag?
  98. chemistry

    what is a compuond?
  99. chemistry

    yrjtukj
  100. chemistry

    what are isotopes???