chemistry! URGENT

61,637 results

  1. urgent urgent urgent

    what is the chemical make up of actin and myocin
  2. chemistry urgent urgent

    Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the treatment/management of genetic diseases?
  3. chemistry urgent urgent

    ... the hiv virus that causes aids destroys the immune system in the body. classify the hiv virus and explain the statement.
  4. urgent urgent urgent

    A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. explain the process the muscle go through
  5. math urgent urgent urgent

    1)let f(x) be a polynomial function explian how to use the factor theorem to check if (x-c) is a factor of F(x) 2) use synthetic division to factor X^2-2x^2-9x+18 completly
  6. math urgent urgent urgent

    x+2y=12 find intercept a circle equation x^2+y^2+4x-4y-1=0 and graph 2)find domain and range f(x)=x^2-4x-5 find vertex of f(x) =x^2+4x-21
  7. chemistry urgent

    hydrogen gas is collected in a bottle, and the pressure of the gas is 892 torr at 24 °C. what is the pressure of hydrogen gas when the temperature decreases to 20 °C? chemistry - DrBob222, Tuesday, November 30, 2010 at 1:25pm (P1/T1) = (P2/T2) Dear Dr Bob: is this a right ...
  8. urgent urgent urgent

    A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. •Explain the chemical process that occurred in ...
  9. PHYSICS URGENT URGENT URGENT URGENT HELP NEEDED!!!

    A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the numerical values of ...
  10. math urgent urgent urgent

    perpendicular to line -2x+y=7 contains the point (-4,-2) the equation of line is
  11. English language

    what could be an example of something that is urgent but is not important? and something that is important but not urgent? these questions refer to daily actions or well any actions, i have absolutely no idea how to answer that. Sure doesn't urgent and important meant almost ...
  12. Chemistry-pls help urgent

    Posted by candy on Tuesday, October 12, 2010 at 5:04pm. 1) How do I prepare 2M nitric acid from 65% concentrated nitric acid? 2) How do I prepare 17% ammonia from 25% concentrated ammonia? Please show calculation steps. Thanks. Chemistry -pls help urgent - DrBob222, Tuesday, ...
  13. Chemistry(Please help, thank you)

    I have to calculate the concentration of I2 produced (# of moles of I2 produced / L) based on the stoichiometric ratio in the following equation. 2S2O3^2- + I2 -> 2I^- + S4O6^2- Chemistry(Urgent, please help) - DrBob222, Sunday, February 26, 2012 at 9:47pm If you know the ...
  14. Venn Diagram (URGENT)

    What are 6 similarities between Canada and Haiti? 1. French Influence 2. 3. 4. 5. 6. Please someone help, this is urgent. thank you.
  15. MATHS! URGENT!

    describe how each sequence is generated and write down the next two terms: a) 40 41 43 46 50 55 b)90 89 87 84 80 75 c)1 3 7 13 21 31 d) 2 6 12 20 30 42 PLEASE HELP its urgent!
  16. Math urgent

    explain how to compute the xy term of the product (3x-4y)^2? if possible with solution please.... its urgent
  17. science-urgent

    What are differences between Continental Drifts and Plate Tectonics? I need at last 4 for each. Please help its urgent!!!!! Thanks a bunch! Ellie
  18. spanish!!...urgent!...please help

    how did the geography influence the migration and exploration of colombia? venezuela? i need websitres for this urgent...please help asap... :(
  19. egypt

    urgent!!!!urgent!!!!!! have to go to bruins game at 5:45whats the magical fiqures inbetween the rapping in a mummy?
  20. Science- urgent-review

    what type of galaxy do astronomers consider to be the oldest? It's urgent because I am studying for a grade 9 exam but I don't know what this is.. please help.
  21. GR.10 CIVICS!!!!!URGENT

    CAN SOMOENE PLEASE GIVE ME A LINK TO A PICTURE THAT HAS TO DO WITH OR IS RELATED TO ABORIGINALS GAINING THE RIGHT TO VOTE IN CANADA(1960).PLEASE! ITS URGENT.THANKS
  22. Health

    Sometimes a patient needs additional care that his or her regular physician cannot provide. In this instance, the physician can make a referral for a patient to see another physician. What are the three types of referrals? (1 point) regular, urgent, fast normal, fast, STAT ...
  23. Chemistry

    Please,tell me the ways I can use to understand chemistry better.I need help,and it is urgent because am starting to drop.
  24. To ANY SCIENCE HELPER URGENT

    1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Please this is very urgent, I have finished everything else but these r my last 2 questions that I don't know! Please help! Thanks:)
  25. History reflections URGENT

    HELP! Trying to find information on Michael Kaznelson author of Remembering the Soviet State: Kulak Children and Dekulakisation. This is urgent so thanks for all your help.
  26. chemistry urgent urgent

    Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are caused due to the differences between the sodium atom and sodium ion?
  27. Trigonometry Urgent!

    I am writing a paper on the 8 trigonometric identites but can't find any information on them. Please does anyone know of any websites that would have things like their history, development, applications in ancient times, origins, etc. Please help. Urgent!!!!
  28. ENGLISH URGENT !!!!!!!

    What are good things to buy for a 17 year old boy that are not that expensive???? this is really urgent for a part of my english project..... pleeeeeeeeeeeeeeeeeeeese help!!!!!!!
  29. chemistery lab..urgent

    hi..can someone hwlp me out here on how we can calculate the moles of H2T(phthalic acid)?? its urgent for my lab this evening 1:00pm friday
  30. Literature

    Can someone help me on this? its really urgent. what is Foil Character and Background Character? please don't give me the stage meaning just fiction. thanks. its really urgent.
  31. urgent alg 1

    add or subtract 2 2 (2t -8t)+ (8t + 9t) second question 3 2 3 (t +8t ) + (-3t ) please helpp its urgent i have the answer butt im not suree pleasee helpp
  32. GEOGRAPHY (URGENT!!!)

    I NEED HELP!!! this is urgent!!! Human-Environmental Interactions: how did the people in Khartoum modify the environment? how is the people in khartoum being influence by the physical landscape/environment? sorry my grammar sucks i have other questions but i really extremely ...
  33. math

    fatima bought 1200 eggs at rs.16 a dozen. At what price per hundred must she sell the eggs so as to earn a profit of 15%. plz its urgent very very urgent try to solve soon.....
  34. Earth science..... help urgent

    hi can anyone help me? my problem is that i need to write a autobiography about the "LIFE CYCLE OF ROCKS". andf i have no idea how to start it.....plz help me....its urgent....give me some clues how to start !!!!
  35. chemistry

    please me,,,,,its urgent...what is the structural formula of the toxaphene?
  36. chemistry

    please me,,,,,its urgent...what is the structural formula of the toxaphene?
  37. Trigonometry Paper Urgent!!!

    I am writing a paper on the 8 trigonometric identites but can't find any information on them. Please does anyone know of any websites that would have things like their history, development, applications in ancient times, origins, etc. Please help. Urgent!!!!
  38. CHEMISTRY URGENT

    Does anyone have a "Chemistry in Context 6th edition" by mcgraw and hill book? I don't have one and my homework is in there. Page 30, questions 5,6 & 7. If you could, type out the questions for me that would be a HUGE help.
  39. Chemistry URGENT!!

    Which anions have the largest and smallest radii? Thank you!!
  40. chemistry urgent

    if 100 g of iron were reacted with 100 g of oxygen according to the reaction below, the maximum yield in grams of Fe2O3 would be: chemistry urgent - bobpursley, Tuesday, November 30, 2010 at 4:20pm Balance the equation. Note the coefficents on Fe and O2, that is the mole ratio...
  41. Chemistry 101-URGENT

    How much heat is required to melt 43.5 g of ice at 0°C?
  42. Plz urgent

    Can anyone please answer my chemistry question i posted quick?
  43. Chemistry URGENT

    Help. what is the formula to figure out the total mass of a solution?
  44. chemistry

    urgent help needed!!! what is .0966 rounded to 2 significant digits? and why?
  45. Ancient History URGENT Akhenaten

    HI Are there any good journal articles on Akhenatens personal aims? What he hoped to achieve. So far all I have is one sentance in a book saying he wanted to do away with the power of the priests of Amun. This is really urgent. My state library is offline and not responding so...
  46. organic chemistry

    What is the negative part reagent in the markovnikov's rule ? It's urgent ...
  47. Chemistry-Urgent

    What is the molality of a solution containing 11.1 g Na2SO4 dissolved in 2269.2 g of water?
  48. CHEMISTRY (URGENT!!!!)

    What is the Keq of NaOBr dissolving in water if the Ka of HOBr dissociating is 6.4*10^-6
  49. Chemistry HELP URGENT PLEASE!!!

    what current (in amperes) is required to plate out 2.85 g of Cr from a Cr^3+ solution in a period of 2.50 hr?
  50. urgent urgent algebra

    find the composite function fog f(X) = 1/X-5,g(x)-6/x question 2 find inverse, domain range and asymatotes of each function f(x)=3+e^4-x can some one help me please been stuck on these for 2 days need help solving thank you
  51. Chemistry - urgent help needed

    The following is part of a procedure for a limit test for sulphates in an NaOH sample:- Dissolve 3.0g of NaOH in 6ml of deionized water, adjust to pH 7 with 12M HCl (about 6.2ml) and dilute to 15ml with deionized water. When about 6ml of 12M HCl was added, a white ppt was ...
  52. English-URGENT-HELP NEEDED!

    Can ANYONE please help me by going to either the very bottom of this page or the top of the next and click on "English-URGENT-HELP NEEDED!"? I really need some help on that one and I'm afraid no one will find it and I'll have to keep posting it over and over. THANK-YOU ...
  53. URGENT chemistry

    What pressure is exerted by 0.625 mol of a gas in a 45.4 L container at -24.0ºC
  54. Chemistry - Urgent

    Determine the mass of 3.16 ×1023 atoms Cl. Answer in units of g. How do you do this? Need to get it done really fast. Thanks for help.
  55. CHEMISTRY URGENT!

    alpha emission by plutonium 242 write a nuclear equation
  56. URGENT!! Chemistry HELP!!

    Use standard enthalpies to calculate Triangle H for: 2C2H5OH (I) + O2 (g) -> 2CH3CHO (g) + 2H2O (I)
  57. chemistry urgent!!!

    2. When exactly 61.9 g of silver nitrate react with magnesium, how many grams of Ag are prepared? Balanced equation:
  58. Chemistry-Urgent Help Please

    What are the differences between -ate, -ide, -ite, and the other suffixes? What are some ways of remembering? Thank you for clarifying this.
  59. chemistry help, urgent!

    Which of the following should you add to stabilize the pH of a solution? solute acid <<my choice buffer base
  60. Chemistry URGENT

    Please show how N and O are combined to make NO^+2 in Lewis dot structure. I'm having a hard time. Thanks
  61. CHEMISTRY URGENT!!!

    Determine the pH (to two decimal places) of the solution that is produced by mixing 30.3 mL of 1.00×10-4 M HBr with 829 mL of 5.77×10-4 M Ca(OH)2.
  62. chemistry urgent urgent

    the managing director of a company on wall street thrives on a diet of fruit jam,bread,pasta,and coffee.she exercises intermittently.one day she desides to go to her primary healthcare provider for a check up the provider recommends that she takes the benedicts test assume ...
  63. Chemistry Urgent Help Please!

    Give two means other than crystallization from a solvent that may be used to purify an organic solid. Explain Pleaseeeee!!!!!!!!!!!!!
  64. Chemistry urgent

    How is pushing down the accelerator pedal resulting in a faster consumption of fuel in the engine concentration?
  65. Chemistry (URGENT)

    Hello! Does anyone know where to find the solubility of Ca(OH)2 in water as temperature changes? I need this information to answer the discussion in a lab report.
  66. CHEMISTRY URGENT HELP

    Why are the trunks of fruit trees painted with a mixture of copper sulphate and calcium hydroxide
  67. Chemistry urgent

    How is pushing down the accelerator pedal resulting in a faster consumption of fuel in the engine concentration?
  68. chemistry urgent

    Draw major product of substitution reaction of (2R,3S)2-bromo-3-methylpentane with CH3CH2O- nucleophile
  69. CHEMISTRY(URGENT PLEASe)

    CONVERT : 1.67KG =___MG 2.70MM=___KM 3.55 DAYS=___MINS 4.37 FAHRENHEIT=___KELVIN BETTER IF WITH SOLUTIONS PLEASE AND HOW TO DO PLEASE
  70. CHEMISTRY-URGENT

    A 4.43 gram sample of phosphorus was burned in air to produce 10.15 g of an oxide. What's the empirical formula of this compound?
  71. CHEMISTRY URGENT

    Give the full set of quantum numbers for the electron lost when a Cs atom ionizes. a. n = 6; l = 1; ml = –1; ms = +½ b. n = 5; l = 0; ml = +1; ms = –½ c. n = 5; l = 0; ml = 0; ms = –½ d. n = 6; l = 0; ml = 0; ms = +½ Is the answer A.
  72. College Chemistry..Urgent!

    THE EQUILIBRIUM CONSTANT FOR A REACTION IS 2.48 AT 25 DEGREES CELSIUS. WHAT IS THE VALUE OF ΔG°(KJ)AT THIS TEMPERATURE? (R=8.314 J/K mol)
  73. chemistry

    Which of the following species exhibits resonance if all the formal charges are minimized? a. OF2 b. N2 c. PCl5 d. ClO3- e. BrF3 plz help me out here. its really urgent!!!
  74. Chemistry URGENT/DR BOB

    I have a couple of unfinished experiments i need help with as well. If you can help me. Thanking you in advance. If I tested the ph of NaOH and its H+ was 12.2 how would I express this in a power of 10? I really have no clue. Need help.
  75. Chemistry (urgent)

    Calculate the volume of an acidified solution of 0.02M potassium manganate that would be used to oxidize 100cm^3 of magnesium etanedioate.
  76. physical chemistry

    salam.... plz give me some sources of error of determining concentration quotient of FeSCN? plzz urgent
  77. chemistry (urgent)

    Commercial breathalyzers contain .75 mg of K2Cr2O7, 1.5 mL of H20 and 1.5 mL of H2SO4. What is the concentraion of the dichromate in the solution?(hint:the acid is a solvent)
  78. Chemistry *URGENT*

    URGENT help! 3. A rock sample was dated using potassium-40, Neasyrenebt ubducated tgat 1/8 of the original parent isotope is left in the rock sample. How old is the rock? 5. When a sample of lava solidfied, it contained 28g of uranium-238. It that lava sample was later found ...
  79. urgent urgent algebra / precalculas

    1. Given a function,H(x)explain how to find the components f(X)AND g(x) such that f(g(x)) = H(x) 2. let H(x)=(2x+5)^4 find the function f and , so that f(g(X))=H(x)
  80. calculus...plz ans urgent

    Find the dimensions of the right circular cylinder of greatest volume which can be inscribe in a right circular cone with radius of 5 inches and a hieght of 12 inches(hint:use similar triangle property).also draw a label diagram....plz answer its too urgent
  81. Chemistry(Urgent, please check!!!)

    The equation A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be? My answer is k(A)(B)^2 Is this correct?
  82. CHEMISTRY--URGENT

    HNO3 with pH 3 is mixed with 2 L KOH with pH 12. assuming volumes are additive what is the pH of the final solution? I have absolutely no idea how to do this. I do know the answer, though. I have a test tomorrow and I would really appreciate it if someone could help!!!!
  83. urgent urgent algebra / precalculas

    rewrite each in exponential expression as a logarithmic expression log, x=4 log 5=2 log b=x
  84. Chemistry-urgent!

    What volume of 2.5% (w/v) KOH can be prepared from 125 mL of a 5.0% KOH solution?
  85. chemistry (urgent)

    Hi, can you tell me what is needed to ionise the O^6+ ion further in order to turn it into an O^7+ ion ? Thanks.
  86. chemistry ( little urgent pls)

    PQ and RS are two sparingly soluble salts.Their solubility products are equal to 4.0×10^(-18). Which salt is more soluble
  87. chemistry final-urgent

    electron configuration of Cr3+? I think is Cr: [Ar] 4s1,3d5 but how about Cr+, Cr2+, Cr3+? Please explain?
  88. chemistry( urgent)

    what do we assume about volume of the actual molecules themselves in a sample of gas, compared to the bulk volume overall?why?
  89. CHEMISTRY--PLEASE HELP, URGENT

    What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve in 500. mL of 0.01 M aqueous silver nitrate?
  90. Chemistry-Urgent

    What is the percent by volume of ethanol in a solution that contains 26 mL of ethanol dissolved in 113 mL of water? explain please
  91. chemistry-URGENT

    how many moles of atoms are contained in 7.654 x 10^32 atoms of Ga ? Thank you!
  92. Chemistry, Urgent!

    How is this question solved?! When 21.6g of a metal X are burned in excess oxygen, 40.8g of X2O3 are formed. From this data, what is the metal X?
  93. Chemistry(URGENT, PLEASE HELP!)

    the volume of alcohol present in 620 mL of a 40% (v/v) solution of alcohol is ______? A. 372 mL B. 40 mL C. 248 mL D. 580 mL
  94. Chemistry, Urgent!

    I can't solve this! I keep trying but I can't get it. Suppose 25mL of 1.00M HCl is added to 50mL of 1.00M HF. What is the pH of the HF in this solution? The pH is supposed to be 0.48 Thanks. -K.
  95. Social Studies (URGENT)

    Pleae help. It's urgent! 10. Why did many Native people start adapting to Victorian society? a.) Was this the only way that things could have gone between the Natives and the colonists? Explain your response. b.) Why didn't the settlers adapt to Native customs and traditions? ...
  96. chemistry urgent

    if 100 g of iron were reacted with 100 g of oxygen according to the reaction below, the maximum yield in grams of Fe2O3 would be: Dr. Bob. Please help.
  97. Chemistry-Urgent

    A gas at 61°C occupies a volume of 0.67 L. At what Celsius temperature will the volume increase to 1.12 L? whats the answer didn't understand
  98. chemistry (urgent)

    List six pieces of evidence for the existence of water on Mars, with a full reference to the source for each piece of evidence
  99. organic chemistry -urgent

    From a column chromotagraphy, how do we know which colours are pure and mixtures? Also how do we know the number of compounds on each of the colour samples and what colour they are?
  100. Chemistry urgent please

    How much mL of dilute nitric acid is needed to add in control solution in chloride limit test in sodium hydroxide sample???can u please give me Answer urgently??
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