Posts by Christina

Total # Posts: 948

  1. science

    you can produce a sound by plucking a string or blowing in a pipe. how is this alike? how is this different?
  2. math

    is there a picture to go with it?
  3. SS

    is the EU considered a nation?
  4. social studies

    How has Europe been shaped by its physical geography? i put: By it's lesiure and transporation, and????????? trading mabye?
  5. social studies

    beacuse there ecomony is stronger and less wars but, i need one more reason.
  6. social studies

    How does europe unifing make them a overall stronger continent?
  7. social studies

    how does Europe unifing as one help have less wars? i know one because they wouldnt fight against them selves
  8. social studies

    oh, thanks please help with the other ones.
  9. social studies

    how does europe unifing as one help the ecomony? i know cuz we they have one currency the euro. i need 2 more.
  10. science

    for an example a strand of DNA could be GAT ACG TAG CAT CAA GGA GAC CCC TTA and match up the strands but remember no thymine in RNA it's only urical
  11. english/ world geo.

    what's wrong with are?
  12. english/ world geo.

    I spelled that wrong by accident i can't find any more mistakes 4 left.
  13. english/ world geo.

    i got some of them: Their to there 5 mistakes left. effects- effect 4
  14. english/ world geo.

    Their are many lingering effects of communsim. I think the most important effects of communsim is the economic and political problems in Eastern Europe. please proofread ( might be factual or spelling punction etc.) there are 6 mistakes in this sentence.
  15. ?

    so keep it all execept the nation thing?
  16. social studies

    Europe should unify beacuse it will help their ecomomy, have less wars, and overall be a stronger nation.
  17. ?

    what about a thesis statement agreeing with the question
  18. ?

    Should Europe unify? i need a thesis statement.
  19. English

    wedding and check for ? marks
  20. English

    2nd to last to line Jacob where did you get the gun from is should have a ? mark
  21. Europe

    What type of internal conflicts?
  22. Europe

    Has Europe seen the end of conflict?
  23. Europe

    How would i make a thesis statement out of this? wheither or not i agree.
  24. Europe

    I know that's all the question said and we have to make a Thesis statement.
  25. Europe

    Should Europe unify? i need a thesis statement.
  26. math

    just make the denimantor equal and see which numenator is bigger and fill it in.
  27. biology- DNA

    I need enough information to write a paragragh.
  28. biology- DNA

    Explain the function and structure of DNA.
  29. social studies

    ok! so i figured out what i'm going to do. since european people are ignorant about how deomcracy works im going to put a lady at the voting place and a man and she says you must write down___(the current prez. in europe) and she says that ur freedom of speech!
  30. social studies

    do you know anything about the transition to deomcracy in europe some details and stuff that will help me
  31. social studies

    in europe help me find a poltical cartoon about the transition between communism and deomcracy please just a website link or something i really need help or any ideas I HAVE NO IDEA WHAT TO DRAW OR ANYTHING mabye ideas about what excalty happened?
  32. social studies

    do u have any ideas of what i could do to make a poltical cartoon?
  33. social studies

    ok, thank you anyway.
  34. social studies

    come on please please
  35. social studies

    in europe help me find a poltical cartoon about the transition between communism and deomcracy please just a website link or something i really need help
  36. geomentry

    i got the answer thanks for NOBODY's help.. its obtuse scalane, etc. and the other one is SAS SSS AAA
  37. geomentry

    what are the 7 classifications of triangles( SAS, SSS,etc.) and 5 triangle congruence postulates?
  38. science

    explain how you can change the lenght of a vibrating string. tell how changing the lenght changes the sound produced by the string. how would you change both the tension and the length and keep the pitch the same? suppose you changed both the length and the tension of the ...
  39. poltics

    come on!! in europe help me find a poltical cartoon about the transition between communism and deomcracy please just a website link or something i really need help
  40. poltics

    i need help finding a cartoon about the transition between communsim and democracy just to get some ideas. (: please help. In europe.
  41. english

    all we had to do is find the subject, verb and prep. phrases
  42. english

    In the fall, the warm ground melts the first layer of snow. in the fall- prep. phrase of snow- " " ground- subject melts- action verb anything else? because i answered this and she said it was wrong
  43. english

    oh, well thanks for all your help i'll be sure to use this website with homework help thanks again!
  44. english

    huh?
  45. english

    is it done? but you can doing?
  46. english

    can't find the verb 'we could have done a better job.' we- subject ???
  47. english

    oh duh! thanks(:
  48. english

    please helppp
  49. english

    the dinner tastes good. dinner- subject tastes- action verb
  50. english

    what do you mean by modifing lives?
  51. english

    'Snow can sometimes threaten the lives of moutain people.' snow- subject can- helping verb sometimes- adv. threaten- action verb of moutain people- prep.
  52. english

    ok, i guess my teacher marked it wrong by accident
  53. english

    tell me whats wrong with this sentence 'The teacher should have taken more time.' teacher- subject should- helping verb have- helping verb taken- action verb
  54. english

    so is are the verb and it's linking right? and pebbles is the subject
  55. english

    In the sentence "these pebbles are like hundreds of small wheels." is like an verb if so action or linking?
  56. physics

    A typical ten-pound car wheel has a moment of inertia of about . The wheel rotates about the axle at a constant angular speed making 30.0 full revolutions in a time interval of 5.00 .
  57. Math

    Hurricane Katrina dropped about four-teen inches of rain over a 48 hour period. How much rain is this in one hour ?
  58. science

    can you give me some facts and info bout how plate tectonics accounts for the features and processes that geoscientists observe in the earth -thank you
  59. Science

    Can you give me some information and facts about the flow of matter and energy in the earth -thank you
  60. physics

    You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.15. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s?
  61. Chemistry

    Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
  62. Chemistry Help!!!!

    Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
  63. Chemistry

    I worked in K.... so at either temp the reaction is not spontaneous? but it is more spontaneous at 1000C?
  64. Chemistry

    Using G (measure of free energy) to determine wether the reaction 4Fe(s)+3O2(g)-> 2Fe2O3(s) is spontaneous at 25C, given that H=.393kcal and S=-0.13 kcal/(mol*K). Is the reaction more or less spontaneous at 1000C assuming that H and S remain constant with temperature? G at ...
  65. Chemistry

    Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
  66. Chemistry

    Which of the following has the greatest entropy? A.1 mole NaCl (g) at 25C B.1 mole NaCl (g) at 50C C.1 mole NaCl (l) at 50C D.1 mole NaCl (s) at 100C I know that gases have the highest entropy and the higher the temperature the higher the entropy...so i am leaning toward b. ...
  67. Chemistry

    so is it d?
  68. Chemistry

    an exothermic reaction involves a. breaking weak bonds to form weak bonds. b. breaking weaker bonds to form stronger bonds c. breaking srtong bonds to form strong bonds. d. breaking stronger bonds to form weaker bonds. I think that it is a.
  69. Chemistry

    True and False... 1. A thermodynamically favorable reaction also proceeds spontaneously. I think that it is false? 2. Doubling the concentration of a reactant always causes the reaction rate to double. 3. a reaction that has a large activation energy in the forward direction ...
  70. chemistry

    Which of the following would have the lowest vapor pressure? A. 0.8 m C6H12O6 B. 0.10 m C6H12O6 C. 0.05 m C6H12O6 D. 0.15 m C6H12O6 I think it is D... is that correct? Which of the following would have the lowest boiling point? A. 0.8 m C6H12O6 B. 0.10 m C6H12O6 C. 0.05 m ...
  71. chemistry

    umm... i'm not sure. are you telling me that i will?
  72. chemistry

    When one mole of LiBr is dissolved in 1 kg of H2O, the concentration of the Br- is 1. 0.5 molal 2. 0.5 molar 3. 1.0 molal 4. 1.0 molar
  73. Chemistry

    P4O6+6H20= 4H3PO3 ?
  74. Chemistry

    Complete and balance the following equation? __P4O6+__H2O -> ___________
  75. Chemistry

    Iron (III) chloride?
  76. Chemistry

    Name the following compound? FeCl3 x 6H2O
  77. Chemistry

    True or false? Hydrogen bonds between water molecules are comparable in strength to hydrogen-carbon covalent bonds?
  78. Chemistry

    6000 calories?
  79. Chemistry

    Calculate the amount of heat (in calories) required to raise the temperature of 200g of water from 20C to 50C. The specific heat of water is 1.00 cal/g. I have done other spacific heat problems but on this one i don't know how to start...
  80. Information Technology

    In the second column, list at least three processes (capabilities) necessary to keep track of your home CD or DVD collection. In the first column, identify the input data required for each of the processes. In the last column, identify a logical name for each output data item ...
  81. Chemistry

    On a melting curve, the heat energy represented by the horizontal portion of the curve is called what?
  82. Chemistry

    Are the melting point and freezing point of a substance represented by the same number?
  83. Chemistry

    1.41 L of H2?
  84. Chemistry

    785torr(V)= 0.35mol(62.36L)(273K) answer: 7.6 L is this correct? i am not sure that the R(62.36L) is what is supposed to be there.
  85. Chemistry

    A 0.35 mol sample of an ideal gas is held in a vessel at 0.C and a pressure of 785 torr. What is the volume of the vessel? (R=62.36L x torr/mol x K)
  86. Chemistry

    How many liters of hydrogen at STP can be produced by the reaction of 4.15 g of zinc with hydrochloric acid: Zn + 2HCl -> ZnCl2 + H2
  87. math

    what is 15% of 250,000$
  88. Science

    where can i find a good site that will show me the change's of the earth's atmosphere?
  89. Chemistry

    The problem is i don't know how to do it....i don't know how to separate the ions that are solubale.....
  90. Chemistry

    Another ionic and net ionic equation that i am having trouble with!!! I need the ionic and net ionic equation KOH+ HBr -> KBr+ H2O
  91. Chemistry

    What is the ionic and net ionic equation? Ca(HO)2(aq)+ Na2CO3(aq)-> CaCO3 -> (s)+ 2NaOH (aq) I don't understand why there are two arrows? This is what i have so far... Ca+2OH+Na2(aq)+CO3(aq)...
  92. Chemistry

    What is the ionic and net ionic equation for Na2CO3 + 2 HNO3 -> 2 NaNO3 + H2O + CO2 (g) This is what i have so far... Na2(aq)+CO3+H+NO3 -> Na+ NO3+ H2O(l)+CO2(g)... i don't know what to do!!!
  93. Chemistry

    oops.... wrong problem... answer.. 16 Mol HCl/1 Mol Cl2 x 36.458g HCl/1 Mol Cl2 = 583.328g HCl
  94. Chemistry

    1 mol C2H2/26.036g C2H2 x 16 mol HCl/1 mol Cl2 x 64.1gCaC2/1 mol CaC2 My answer = 583.328g HCl?
  95. Chemistry

    DrBob222... I really don't know where to begin.. One Mole of Cl2 gas is 70.9g I have done mass to mass conversions but the mole ini the problem is giving me trouble!!!
  96. Chemistry

    Chlorine gas may be easily prepared in the lab according to the reaction: 2KMnO4(s)+ 16HCl(aq)-> 2 MnCl2(aq)+5Cl2(g)+ 8H2O(l)+ 2KCl(aq) What mass of HCl is needed to prepare 1 mole of Cl2 gas?
  97. Chemistry

    Some drain cleaners contain a mixture of sodium hydroxide and aluminum which reacts with water as follows: 2Al(s)+2 NaOH(aq)+6H2O(l)->2Na[Al(OH)4](aq)+3H2(g) What mass of hydrogen gas can be produced when 5g Al reacts with sufficient NaOH and H2O) according to the above ...
  98. chem engineering

    Mass balance on an intravenous injection (IV) bag A nurse sets up an IV drip for a patient consisting of normal saline; assume that this is an aqueous solution containing 150mM salt. The saline drip is supplemented with an antibiotic solution; assume that this is an aqueous ...
  99. Math

    Make up a set of at least twelve numbers tahtn have the following landmarks. Maximum:8 Range:6 Mode:6 Median:5
  100. 7th grade

    what is the antonym for legacy
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