chemistry! URGENT

61,261 results, page 34

  1. chemistry

    what is electromagnetic radiation
  2. chemistry

    what are the electrolytes in ORS?
  3. Chemistry

    100.0cm3 of
  4. chemistry

    What is a saturated solution?
  5. chemistry

    Why is CO2 not ionic?
  6. Chemistry

    Convert 9.45 μm to inches.
  7. Chemistry

    How many orbitals are in the l = 4 subshell?
  8. Chemistry

    What's the colour of NaAlO2 ?
  9. chemistry

    HCl + NaOH = ?
  10. Chemistry - Hybridization

    Can anyone help me with this questioin pleasee? Describe the orientation and relative energy levels of sp2 and sp3 orbitals with respect to unhyberdized orbitals (1s, 2s, 2px, 2py, 2pz orbitals) 1s and 2s are spherical. 2px, 2py, and 2pz are at 90o to each other (mutually ...
  11. chemistry (drbob222)

    I posted yesterday. Re: Chemistry (Sunday, October 4, 2009 at 12:49pm). Here's the information I left out. Number 3 simply states: nickel forms a large number of ammonia salts Ni^2+(NH3)m(Br)n . p(H2O) where m, n, and p represent the coefficients in the formula How do you know...
  12. 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 ...
  13. Chemistry

    Atom-Particle that cannont be divided in half becasue it is in its smallest form. Reactants-Substances that exist before the reaction begins. Endothermic Reaction-take in, or absorb heat energy. Exothermic Reaction- Release Heat energy Inhibitor-makes a reaction slower. Rate ...
  14. chemistry

    Does anybody know any websites that there are chemistry labs that could possibly be used in a CSI investigation? I can’t find anything. http://antoine.frostburg.edu/chem/senese/101/organic/faq/amino-acid-test.shtml
  15. Need help on my report on a famous Chemist

    http://www.liv.ac.uk/Chemistry/Links/refbiog.html Would you please help me with my report on a famous chemist, i need ideas on who i should do it on, and i need to identify his/her contributions to my life, and the report has to be one and a half to two pages long. go lik a ...
  16. Chemistry

    I am completely lost in chemistry. Everything the teacher says sounds like a different language to me and I am usually really good in the class. Can someone help me do this problem please? An element "E" is present as 10E (The 10 is like an exponent to the left of the E) with ...
  17. Chemistry Equation(again!)

    Posted by chrissy on Saturday, January 6, 2007 at 1:23pm. In a lab expirement you add copper(II)nitrate to pure zinc. Write a balanced equation for this expirement and predict if a reaction will occur. For Further Reading Chemistry Equation - DrBob222, Saturday, January 6, ...
  18. chemistry

    To what volume should you dilute 131 mL of an 8.20 M CuCl2 solution so that 49.0 mL of the diluted solution contains 4.53g CuCl2 ? Chemistry...Help!! - Dr Russ, Wednesday, December 8, 2010 at 4:43am Molar mass of CuCl2 is 134.5 g mol^-1 so solution needs to contain 4.53 g / ...
  19. Chemistry (chromatography)

    I had a chromatography experiment for chemistry and here is one of the questions: Did the compounds travel farther in the water or the isopropyl alcohol (rubbing alcohol)? Explain why you think that this is the case. Now, the compounds traveled the farthest in the water but I ...
  20. Response Evaluation (Urgent! Please, help me!)

    Should I revise anything? What improvements do you suggest? Although it may be derivative and overly nostalgic, I think the 1993 film The Sandlot, directed by David M. Evans, is a genuinely sweet and hilarious adventure that that takes place upon a screen. With its tone and ...
  21. chemistry

    1. A website promoting the use of alternative energy vehicles and hybrid technologies claims that, \"A typical automobile in the USA uses about 40 gallons of gasoline every month, producing about 750 lbs of carbon dioxide.\" To determine the truth of this statement, calculate ...
  22. Urgent... I need help please

    When do you think the prosecutor's office should become involved in a case (pre-arrest or post-arrest)? Do you think involvement by a prosecutor in the original stages of an investigation is a good idea? Can a defense attorney ever become involved in a case prior to indictment...
  23. Math

    I need urgent help with these 3 math problems 1. Margaret painted a mural for St. Patrick’s Day and mixed her own green paint. She mixed 3 parts yellow paint with 2 parts blue paint to create green paint. Maureen wanted to also paint a mural with the same green color, but ...
  24. English

    Hello! I will type 2 exercises from the lesson I am teaching on Wednesday-english as a foreign language - 8th graders ( it will be graded) I need you to help me with some ideas. It says: LEAD- IN: A Here is a list of some natural sciences: BIOLOGY CHEMISTRY PHYSICS BOTANY ...
  25. Statistics- Math

    One student scored 54 on a math test for which the mean score was 50.5 and the standard deviation was 3.2. Another student scored 80 on a chemistry test for which the mean score was 75.2 and the standard deviation was 5.2. Which student (math or chemistry) had a "better" score...
  26. chemistry

    Please help!!! Desperate for answer!!!? Did the equation do not know the 2nd questions"s answers for the problems a) 2O3(g) = 3 O2(g) + heat (O3 IS UNDERLINED) [6.0x10-1] [0.21] b) 2 CO2 (g) + heat = 2 CO(g) +O2(g) (CO IS UNDERLINED) [0.103] [0.024] [1.18 x10-2] c) NO2(g) + O2...
  27. chemistry

    Table of enthalpy of solution for selected cesium salts Compound and ΔsolH kJ mol-1: - Cesium bromide: 25.98 - Cesium iodide: 33.35 - Cesium chloride: 17.78 - Cesium fluoride monohydrate: -10.46 - Cesium fluoride sesquihydrate (·1.5H2O): -5.44 Data taken from CRC ...
  28. Chemistry Help! Thank you :)

    Assuming the final solution will be diluted to 1.00 , how much more should you add to achieve the desired pH? Information: Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.80. You have in front of you: 100 ml of 7.00×10−2 M HCl...
  29. aed 205

    Read the following vignette and identify the factors that threaten the activity flow of the lesson. Once you have identified the problems, explain how you would avoid the problems if you were the teacher. Here is the story Mrs. P.waits while her second-grade students take out ...
  30. Chemistry

    Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.70. You have in front of you * 100 mL of 6.00×10−2 M HCl, * 100 mL of 5.00×10−2 M NaOH, and plenty of distilled water. You start to add HCl to a beaker of water when ...
  31. Chemistry

    Chapter 3 41. How many significant figures are in each?
  32. chemistry

    What are the units for E minimum? with reference to what?
  33. chemistry

    why is CCl4 classified as a compound?
  34. Chemistry

    Is air a mixture or a coumpound?
  35. Chemistry

    Why air is classified as matter?
  36. chemistry

    What are some examples of a suspension?
  37. chemistry

    how can you find temperature of sodium?
  38. chemistry

    what is the exponent power of a liter??
  39. Chemistry

    Is there an equation for acid rain? What is it?
  40. chemistry

    the value of this quantity for water is ?
  41. chemistry

    what is produced when methane is burned ?
  42. chemistry

    convert 0.75 kilograms to milligrams
  43. Chemistry

    How many atoms of C are contained in 45.6g of C6H6?
  44. chemistry

    What is the hydroxide concentration if the hydronium is .03 M?
  45. chemistry

    how do you read this formula: 2Au2O3
  46. chemistry

    How do I figure out the mass of 1 M&M?
  47. Chemistry

    How many moles of CaCO3 are present in 30.6g of it ?
  48. Chemistry

    What is the mass of 8.25 * 10^19 UF6 molecules?
  49. Chemistry

    how would i find the pH of this? 1.0 M NH3 (Kb = 1.8 x 10-5)
  50. Chemistry

    How many electrons in an atom can have n=3, ml=+1 and ms=+1/2
  51. chemistry

    what is the flame test for nickel
  52. chemistry

    Why is the formal charge on B in BF4- is 1?
  53. chemistry

    what is an example of a solid hydrocarbon
  54. Chemistry

    What is enthalpy in layman's terms?
  55. AP CHEMISTRY

    how do i calculate theoretical yield?
  56. Chemistry

    what is the volume of the unit cell
  57. Chemistry

    What is electron configuration of Bi5+?
  58. chemistry

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

    when will a displacement reaction not occur?
  60. Chemistry

    what precipitate (if any) will form? Al(NO3)3 (aq) + Ba(OH)2 (aq)
  61. chemistry

    Why can water dissolve so many substances?
  62. chemistry

    why are ions of physiologic importance?
  63. Chemistry

    What is the Lewis structure for IF4-?
  64. PLEASEE HELP CHEMISTRY

    What is partial pressure?
  65. chemistry

    What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10-10
  66. Chemistry

    Convert 125000 Pa to psi
  67. chemistry

    covert 19.4g NH3 to moles
  68. organic chemistry

    why can't you have 2-ethylheptane?
  69. physics

    What model is the basis for chemistry?
  70. chemistry

    what is c3h8 dioxide or hydrogen
  71. chemistry

    how many neutrons r there in a phosphorus atom
  72. Chemistry

    what is the pH level of an average lake
  73. chemistry

    Draw 5-methyl-3-heptene
  74. chemistry

    determine the pH of this solution. [OH-]=4.25 * 10^-5 M. Is the answer 4.37??
  75. chemistry

    give electron configuration for a> Na b) Na+ c) O d)O ^2-
  76. chemistry

    sorry Ksp of PbCl2 is 1.6 x 10-5
  77. chemistry

    what is average kinetic energy?
  78. chemistry

    Draw 1- fluoro 2- iodobenzene
  79. Chemistry

    How can i find the abundance of an isotope?
  80. chemistry

    What is the pH if the hydrogen-ion concentration is 6.8 x 10^-7 M?
  81. chemistry

    chemical technology definition
  82. chemistry

    chemical technology definition
  83. chemistry

    Atomic nature of glucose
  84. chemistry

    calculate the number of liters in 7.05 x 10 ^-2 m^3
  85. chemistry

    16.3g equals how many cg? someone helllllllllllp
  86. 11th grade

    what exactly is chemistry?
  87. Chemistry

    What si the pH of a solution of 10^-8 M HCl in H2O?
  88. chemistry

    what is not viewed with an electron microscope
  89. chemistry

    examples of suspension and solution
  90. Chemistry

    what is the formula to change the temperature of K to C
  91. chemistry

    What is the mass in grams of 14.6 amu?
  92. Chemistry 101

    How many kg of chlorine are in 23 kg of CF_2Cl_2?
  93. chemistry

    what is the 'big idea of energy'???!
  94. chemistry

    define organic compound?
  95. Chemistry

    At the equivalence point for CH3COOH, the pH will be?
  96. chemistry

    does fire have matter?
  97. Chemistry

    How do you find molar mass?
  98. Chemistry

    NaC2H3O2 (aq) + HCl (aq) = NaCl (aq) + ?
  99. Chemistry!

    Are hydrocarbons always nonpolar??
  100. chemistry

    can u tell me a slogan for flourine?
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