1. physics

    An open barge has the dimensions l=22 m, w=40 m, and h=12m. If the barge is made out of 4.0 cm thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in fresh water without sinking? Is there enough room in the

    asked by wilfred on October 26, 2010
  2. Math

    Hello everybody! May I ask you a big favor? I need help. What I have is: A bag contains marbles of three different colors with at least three marbles of each color. Three marbles are randomly selected, without replacement. How many different color

    asked by mathstudent205 on January 14, 2013
  3. Chemistry

    For a particular redox reaction NO is oxidized to NO3^- and Cu^2+ is reduced to Cu^+ . Complete and balance the equation for this reaction in basic solution. We are given this as a guide to start NO + Cu^2+ --> NO3^- + Cu^+ I started with: Cu^2+ + 2e- -->

    asked by Heather on April 9, 2014
  4. Chemistry

    At -15.0 C, what is the maximum mass of fructose (C6H12O6) you can add to 3.00 kg of pure water and still have the solution freeze? Assume that fructose is a molecular solid and does not ionize when it dissolves in water. I'm confused on how you pick the

    asked by Tracy on February 16, 2012
  5. Chemistry

    I am reading through material for a recrystallization experiment, and I had a few things I wasn't sure about; - Why once filtered, should the recrystallization solution be allowed to cool slowly, undisturbed, rather than quickly? and -What makes a good

    asked by Natasha on March 8, 2010
  6. Chemistry

    Which of the following is a stronger lewis base: cyanide ion or dicarbide ion? I'm assuming it is the dicarbide ion as it is more negatively charged and a compound consisting of 2 carbons is larger and therefore more likely to lose electrons than something

    asked by Kevin on April 22, 2016
  7. Chemistry

    Calcium can also be precipitated out of the solution by adding sodium phosphate (Na3PO4) to form solid calcium phosphate. A.) write a net ionic equation for this process B.)calculate the mass of this precipitate you would generate from treating 1.000 L of

    asked by Mai on March 25, 2014
  8. Math

    Peter received a six month post dated check for 100,000 (the check can only be cashed after six months) he offers it to a friend for 92,000 .His friend's money is presently earning 10% compounded monthly.If there is 20% withholding tax on interest ,which

    asked by Queen on August 8, 2016
  9. Chemistry

    which a growing human population, scientists believe that clean freshwater will become scarce (limited). a possible solution is to desalinate salt water. using what youve learned in this unit, describe the type of a mixture salt water is and explain how

    asked by Anonymous on September 14, 2018
  10. british english

    I have to find out what this part of a story is about. 1) don't know where professor got it 2)I think it might pertain to Victorian era: They measured each other with the eye. to her he was a spidery thing against the velvet blackness and hard silver

    asked by elda on April 24, 2007
  11. algebra 1

    What point is a solution to the system of inequalities y(inequality arrow pointing right)4x and y(inequality arrow pointing right)-2x-3? -1/2,-2?

    asked by Lily on July 24, 2010
  12. chem

    an indicator HIn is blue and its anion In- is red, Ka of indicator is 0.0001 at what pH value will a solution containing HIn be blue?

    asked by Chloe on June 2, 2010
  13. science/chemistry

    thank you! What is the molar concentration of hydroxide ions in a solution with a pH of 6? Find the concentration of H ions first.. [H+]= antilog -ph Then, find [OH-] [OH-]= 1*10^-14/[H+]

    asked by Devon on June 5, 2007
  14. Algebra

    If you replace the equal sign of an equation with an inequality sign, is there ever a time when the same value will be a solution to both the equation and the inequality?

    asked by Michelle on February 23, 2010
  15. CHEMISTRY

    WHAT IS A CHEMICAL WITH A HIGH PH? A saturated solution of sodium hydroxide has a very high pH. IS SODIUM HYDROXIDE ALKALINE VERY

    asked by Anonymous on January 31, 2007
  16. chemistry

    How do you prepare a 0.4 M solution of sulfuric acid in water starting with concentrated sulfuric acid (18 M) and water?

    asked by Amanda on March 11, 2012
  17. Chem

    Compared with a pH of 7, a solution of pH 5 has what times/fraction of the hydrogen concentration? 1. 1/100 2. nearly the same concentration 3. twice 4.5/7 5. 100 times

    asked by Roksana on May 4, 2010
  18. chemistry

    How do you prepare a 0.4 M solution of sulfuric acid in water starting with concentrated sulfuric acid (18 M) and water?

    asked by Amanda on March 11, 2012
  19. science

    What is the freezing point of a solution of 12.0 g of CCl4 dissolved in 750.0 g of benzene? The freezing point of benzene is 5.48°C; Kf is 5.12°C/m.

    asked by Stephanie on May 6, 2009
  20. Chemistry

    What is the ( m/m) % concentration of a tin in a solution of 5.000 grams of tin dissolved in 95.000 grams of copper

    asked by Ruffles on December 4, 2013
  21. English Expressions

    Will you check the following English sentences? 1. Paying attention to the intonation mark, listen carefully. (Do I have to use 'mark'?) 2. Put your tongue between your upper teeth and lower teeth, and say th by letting the air over your tongue abruptly.

    asked by John on March 22, 2008
  22. psychology

    1. CheckPoint: Effects of Stress You are currently an associate at an advertising agency where you have worked for two years. You are pursuing a promotion to the position of advertising executive. While you have expected to put in extra hours and some

    asked by ann on October 9, 2008
  23. Chemistry

    1.How much energy is emitted by 1 mol of sodium ions emitting light at this wavelength? Answer in units of kJ. This is what I did for this problem, but my answer is wrong 45.8 mg = 0.0458 g 0.0458 g / (23.0 g/mol) = 0.001991 mol Na 0.001991 mol x (6.02214

    asked by Anna on February 13, 2015
  24. English

    My Recipe for Making Vegetable Soup Ingredients:a radish, a carrot, a head of cabbage, an eggplant, many leeks, many mushrooms 1. Wash cabbage, an eggplant, leeks, and mushrooms in city water(or tap water) in a big container. 2. Drain them in a colander.

    asked by John on May 7, 2009
  25. Sociology 101. Can someone please proofread this

    Both writers make valid points in their essays regarding moral decline. Robert H Bork points out in his essay, Modern Liberalism and American Decline, that the morals and values have decreased in America due to the increase or movement towards modern

    asked by Amy on February 16, 2009
  26. English

    Richard Cory poemm it ask give some points from poem to make character of this good guy. i say that he not be happy with his life even if he be rich because he shoot himself in end of poem that mean that wealth not buy happiness. do this be awareness it be

    asked by Mohammad on June 2, 2012
  27. Chemistry

    1. What is the pH of the solution created by combining 0.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? 2. What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first

    asked by Kyo on November 1, 2010
  28. physics

    A car (mass = 750 kg) is initially moving with velocity 30 m/s. The driver slowly presses on the brakes and bring the car to a stop, traveling 50 m in the process. Calculate the force of friction between the car and the ground that brings it to a stop.

    asked by Cassie on January 19, 2015
  29. Chemistry

    A 0.170-mole quantity of CoCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Co2 ions at equilibrium? Assume the formation constant (Kf) of Co(NH3)62 is 5.0× 1031 M–6. I don't really know how to start. At first I thought about

    asked by Alexis on April 14, 2014
  30. chemistry

    I feel like this question is pretty easy, but I can't seem to figure out how to go about solving it. It's like the solution is on the tip of my tongue: Nitromethane (CH3NO2) burns in air to produce significan amounts of heat. 2 CH3NO2(l) + 3/2 O2(g) -> 2

    asked by Jamie on March 19, 2014
  31. Chemistry

    The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.530. If a trial's absorbance is measured to be 0.150 and its initial concentration of SCN– was 0.00070 M, the

    asked by Anonymous on April 10, 2008
  32. education

    prepare and submit a proposal to bill that gives your suggested solution to his business plan. provide bill with the details of what he needs to purchase in order to have what he needs to conduct his business using today's technology, make sure you include

    asked by elisha on March 2, 2014
  33. PE

    You discover a red bump on your leg that itches. You decide to research the symptoms. While researching, you discover contradictory information. What is the best next step? Assume the bump is life threatening and call the doctor.*** Implement the solution

    asked by Stacy on September 27, 2015
  34. Physics

    Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 65.0. Dog exerts a force of 256 and dog exerts a force of 344 . A) Find the magnitude of the resultant force. B) Find the angle the resultant force makes with dog 's

    asked by kuwaiti on November 4, 2006
  35. Physics. Urgent help!!

    The relative humidity is 55% on a day when the temperature is 30.0°C. Using the graph below, determine the number of moles of water vapor per cubic meter of air. on the graph, Vapor pressure of water is on the y-axis and temperature on the x-axis 30C

    asked by Papito on April 25, 2007
  36. grammar

    Does this sentence has voice issues? The ball was hit by the boy. Plz help explain The ball was hit by the boy. This sentence is in PASSIVE VOICE; that is, the subject is not doing the action of the verb. (Subject = ball; verb = hit) It would be better to

    asked by chocolate on July 20, 2007
  37. Physics - Ionic bonding

    Hello My exams are coming I'm a straight A student .. the problem however is : My textbooks , teacher and every piece of work that he gives us is complicated can someone explain me how Ionic Bonding works and when we're taking about this table here can

    asked by Sasha on June 7, 2007
  38. eco

    suppose that the marginal product of the last worker employed by a firm is 40 units of output per day and the daily wage that the firm must pay is $20 while the marginal product of the last machine rented by the firm is 120 units of out put per day and the

    asked by evon on October 5, 2007
  39. English

    Can you please tell me if the following statements regarding school rules are correct? Thanks a lot. 1) You must: do your homework regularly, always bring your books to class, put up your hand if you want to ask your teacher a question or answer your

    asked by Franco on March 23, 2010
  40. calculus

    using the squeeze theorem, find the limit as x->0 of x*e^[8sin(1/x)] what i did was: -1

    asked by Lid on October 27, 2015
  41. chm

    What is the vapor pressure (in mmHg) of a solution containing 16.0 g of (3 marks) glucose (C6H12O6) in 80.0 g of methanol (CH3OH)? The vapor pressure of pure methanol at 27 °C is 140 mm Hg. If the experimentally determined vapor pressure is 128 mm Hg,

    asked by jonny on February 3, 2015
  42. English

    1. He likes warm colors such as red and yellow. 2. He likes warm colors for example red and yellow. 3. He likes warm colors, for example red and yellow. ------------------------ Which one is similar to #1? Do we have to put a comma before 'for example'?

    asked by rfvv on September 6, 2017
  43. PE

    Not exactly a question but still considered as homework i need help with. Thanks in advance for answering if you do, its a great help. Ive been given a task to survey people about excercise and fitness. The answers don't have to be long but please atleast

    asked by Ronnie on July 1, 2008
  44. Math

    There is a deck of 12 cards numbered 1 through 12. One card is drawn at random from the deck, look at it and then put it back in the deck. A total of two cards are drawn in this way. Define the following events: • A : get an even numbered card and an odd

    asked by Jackson on September 20, 2016
  45. Following Month income statement

    "Customers are billed when serviced and settle their accounts in the following month." I am supposed to construct an income statement for three straight months but I do not know where to put the revenue. So for instance the company made $15,000 in revenue

    asked by Accountant on September 16, 2006
  46. Chem

    Compound A is a clear colorless liquid with a familiar, pleasant odor, which boils at 91-92C. A dissolves readily in water. When a solution of 5 drops of A in 1 mL of water is tested with blue and red litmus, neither test paper is seen to change color. The

    asked by Jay on June 12, 2006
  47. math

    The longer leg of a right triangle is 3 more than the shorter leg. The Hypotenuse is 6 more than the shorter leg. If the perimeter of the triangle is 36, find the length of each side of the right triangle. [ Only an algebraic solution will be accepted ]

    asked by vincent on July 30, 2013
  48. chemistry

    How many milliliters of a 4.5 M HCl solution would be needed to react completely with 5.8 g of aluminum? I know the answer is somewhere around 143 mL HCl, but I CANNOT figure out how to find that answer. I have done a conversion from g of Al to mL of HCl

    asked by Reeseamelia on May 5, 2015
  49. science

    what mass of silver(1)nitrate is needed to prepare 100cm3 of silver(1)nitrate solution,concentration 0.2mol/dm3? the mass of one mole of silver nitrate is 170g please help me with this question

    asked by aminah on January 7, 2017
  50. chemistry

    A potassium iodide solution is made by mixing 0.520 g of potassium iodide with 120.0 mL of water. Calculate the molality of potassium iodide. Assume that the density of water is 1.000 g/mL

    asked by hereyago on April 19, 2012
  51. chemistry

    Calculate the freezing point of 0.15 m calcium chloride aqueous solution. Assume that the molal freezing point depression constant of water is 1.86°C·kg/mol and that the freezing point of water is 0.00°C

    asked by hereyago on April 19, 2012
  52. Informal Logic

    Sometimes people get caught in a “downward spiral,” a case in which something leads to a result which in turn leads to more of the original thing, bringing on more of the result. As the process continues, the result continually gets worse and worse. An

    asked by Anthony on December 4, 2010
  53. Managerial Economics

    I am trying to understand how to variate between MC and MB using the theory of optimization the circumstance which a waste site could be made too clean. Note: Good answers are dispassionate and employ economic analysis. Draw a graph, put cost/benefits on

    asked by Sharon Williams on May 25, 2007
  54. English

    What type of language register is used between King Anguish and his wife in lines 1-8 of the excerpt? 1-8: Finding her rage thus put to naught, she ran to King Anguish, and threw herself on her knees before him, crying out. 'Oh, my lord and husband, here

    asked by Michael on October 26, 2017
  55. Chemistry Help

    You are required to make 500 mL of a buffer solution with pH = 5.0 and a total acetate concentration of 0.1000 M. You are supplied with solid sodium actetate (CH3COONa) and 2.00 M hydrochloric acid. What mass of sodium acetate and what volume of

    asked by John on December 6, 2016
  56. chemistry (AP)

    The heat of neutralization of HCl (aq) by NaOH is -55.9Kj/mol H2) produced. If 50ml of 1.6M NaOH at 25.15 celsius is added to 25ml of 1.79M HCl at 26.34 celsius in a plastic foam cup calorimeter, what will be solution temperature be immediately after the

    asked by Annie on November 14, 2014
  57. chemistry

    A standard addition method is used to determine the concentration of ethanol in an unknown sample. Six 10 mL aliquots of the unknown are drawn from the processing vat. An aqueous solution of ethanol is standardized to have 1.57 g/L. This standard is

    asked by meeny on May 3, 2016
  58. chemistry(please check my work)

    If 0.836 g of solid Al reacts stoichiometrically according to the balanced equation in a reaction solution with a total volume of 1160 mL, what mass (g) of gaseous H2 is produced? 6 HClO4(aq) + 2 Al(s) → 3 H2(g) + 2 Al(ClO4)3(aq) 0.836g/molecular weight

    asked by eng on April 3, 2010
  59. other Quadratic equations

    The problem is 7x^3-x+1=x^3+3x^2+x. Find all real answers. I came upwith two answers 3x^2=1 and 2x=1/2. The first answer just does not look right. I must be forgeting something! You can check them by putting in x=1/4 (the second answer), and then x=+-

    asked by theresa on January 27, 2007
  60. Biology

    Equal sized potatoes are dipped into water,weak sucrose and strong sucrose solution.Predict (a)What potato would increase in size (b)What potato would decrease in size (c)Comment on the stiffness of the potatoes before and after dipping them into the

    asked by Anonymous on October 18, 2009
  61. Chemistry

    The measured potential of the following cell was 0.1776 volts: Pb|Pb2+(??M)||Pb2+(1.0M)|Pb Calculate the electrode potential of the unknown half-cell(anode). Not sure how to approach this, considering the molarity is unknown. There isn't a lot of space on

    asked by Alex on March 27, 2014
  62. chemistry

    "Stomach acid" is hydrochloric acid. A sample of gastric juice having a volume of 6.68 mL required 13.90 mL of 0.0161 M KOH solution for neutralization in a titration. What was the molar concentration of HCl in this fluid? C(HCl) = If we assume a density

    asked by walter on June 14, 2015
  63. chemistry (buffers)

    How can weak acid nitrous acid HNO2 form a buffer solution with equal concentrations and volumes with weak base NH3? I thought that buffer solutions only occured between weak acids and strong bases or vice versa. The example above as two weak soltuions.

    asked by mike on September 1, 2008
  64. Gen Chem

    Chromium can be electroplated from an aqueous solution containing sulfuric acid and chromic acid, H2CrO4. What current is required to deposit chromium at a rate of 1.25 g/min? 1mol H2CrO4 has 51.996 grams current= coulomb/sec How do I convert to get

    asked by Sarah H on March 28, 2008
  65. Chemistry

    Consider the case where we are titration 50.0mL of 1.00M HCl (receiving flask) with 1.00 NaOH (burette) Find the pH of the solution: a) After adding 50.00mL of base I do a comparison method to determine the number of moles of NaOH Amount----Volume b) After

    asked by Anonymous on January 8, 2018
  66. Basic Differential Equation

    Hi all. I need help understanding something my book dosn't go over well. For example dy/dx=-4y is a given solution and I need to find the differential equation. I simply isolate y then integrate. Getting y=e^(-4x) which is correct. My question is for

    asked by Joe on June 5, 2015
  67. General Chemistry 132

    When solid NH4NO3 is dissolved in water at 25celcius, the temp of the solution decreases. What is true about the signs of enthalpy and entropy for this process? I understand entropy is positive, however, i do no understand why enthalpy is also positive.

    asked by Robert on May 6, 2015
  68. Chemistry

    My head is spinning from this chapter! I've done most of the questions by myself but I have no idea what formulas I should use for these last two. Can you walk me through them so I can understand what I need to do? 1. What volume of 5.0 M HNO3 is required

    asked by Lissa on September 26, 2014
  69. Chemistry

    The titration of a 50.0 mL solution of the monoprotic bromoacetic acid (pKa = 3) takes 10 ml of 0.01 mol L-1 NaOH to reach the stoichiometric point. What was the initial concentration of bromoacetic acid? A) 0.02 mol/L B) 0.01 mol/L C) 0.002 mol/L D) 0.001

    asked by Connie on March 12, 2010
  70. chemistry

    What is the general form of a common automobile battery? How many electrodes does a car battery use? Does it use an acidic aqueous electrolyte solution? Is the battery rechargeable? Is the battery voltaic or electrolytic when discharging? Is the battery

    asked by Anonymous on April 27, 2012
  71. Science

    A chemist notes that a solution turns blue when a chemical reaction takes place. Which of the following correctly describes the chemist's data? A.The data is a qualitative observation*** B.The data is a quantitative observation C.The data is a prediction

    asked by Anonymous on August 25, 2015
  72. health

    1. Which of the following best describes catheterization? A. Burning away of cancerous tissue B. Visualization of the large intestine C. Implantation of an intrauterine birth control device D. Placement of a drainage tube into the bladder 2. Which is a

    asked by Anonymous on December 22, 2010
  73. Social Sciences

    I need to write an essay using the second amendment controversy with gun control as proof that the Bill of Rights is at an unhealthy state. I am going to focus on misleading ideologies surrounding guns and gun control and propose that proper gun education

    asked by Bill on March 26, 2011
  74. hi calculus asap

    the graph of a piecewise linear function f, for -1

    asked by Anonymous on November 30, 2006
  75. pre-calculus

    You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the unit price for x items. -45 x^2 - 74.5199999999995 x + 15921.36 - 1224.72 p = 0 and 54 x^2 + 1743.12 x + 13880.16 - 6940.08 p = 0

    asked by Irina on October 14, 2014
  76. lynching

    need any help available on writing a report on lynching. Need help getting started. Have all kinds of research but not sure how to put it together. Need an outline too. 1. Introduction (define, very brief history) 2. Theory of Origin 3. Detailed History of

    asked by Lori on November 20, 2006
  77. algebra

    graph each of the following equations below using their intercepts?. 25x + 50y - 100 = 0 find the intercepts Y intercept is when x is zero x intercept is when y is zero. plot those points, connect the dots. please answer my question with solution. 2y - 8x

    asked by jenny on January 31, 2007
  78. Math

    "You have been asked to help build a rectangular play area at the new Tracy elementary school. You arrive at the site eager to begin! Much to your surprise, the only things available to work with are two pieces of rope. Explain how you can use the rope to

    asked by Amanda on December 20, 2013
  79. Social Studies (unkown field)

    A high school student (Age 16) uses his computer to record songs that he plays off the internet. The student recorded the songs off the internet usign a recoring device. He then sells the recording of music at school. He opens up a little shop were he'll

    asked by IDK on November 23, 2008
  80. English

    1. His ambition to become the world champion was understandable. (Waht is the part of speech of 'to become the world champion'? Is it a noun phrase or an adjective phrase?) 2. He has only one aim, to make a lot of money. 3. He has only one aim to make a

    asked by rfvv on September 22, 2011
  81. English

    I forgot to include the following statements. Thank you very much for your help! 1) A camp instructor was thrown out of his raft and hit his head on the rock. 2) Though he lost consciousness, two of his students called the emergency services. 3) An

    asked by Mike on February 14, 2011
  82. Chemistry

    Lauryl alcohol is obtained from coconut oil and is used to make detergents. A solution of 5.00 g of lauryl alcohol in 100.0 g of benzene freezes at 4.2 oC. What is the approximate molar mass of lauryl alcohol. Refer to the text book for the boiling point

    asked by m on February 17, 2013
  83. Chemistry

    What weights of NaH2PO4 and NaHPO4 would be required to prepare a buffer solution of pH 7.45 that has an ionic strength of 0.1? pKa2=7.12 , mwt NaH2Po4=120g/mol NaHPO4=142 g/mol using the henderson-hasselbalch equation i got that the ratio of the

    asked by ?? on March 19, 2013
  84. english

    Ok, it says that I need to find a news report about a non-violent property crime or fraud. And create a table with what? who? When? Where? How?( details of how the crime was done) How?(results to victim)How?(Public reaction, if any) and How?(results in

    asked by karina on May 14, 2009
  85. Chemistry

    When 3.2 g of ammonium chloride is dissolved in 75 g of water, the temperature of the solution decreases from 22.8°C to 20.1°C. What is the energy of dissolution of NH4Cl per mole? (The molecular mass of NH4Cl = 53.49 g/mol, and the specific heat of

    asked by Morgan on December 10, 2014
  86. Science

    A chemist notes that a solution turns blue when a chemical reaction takes place. Which of the following correctly describes the chemist's data? A.The data is a qualitative observation B.The data is a quantitative observation C.The data is a prediction

    asked by Gwen on August 21, 2014
  87. algebra

    Essay. Show all work. A school designer wants to create a whiteboard with the optimal dimensions to enhance learning. it is determined that if one side of the whiteboard is x+y inches, the other side should be x^2+6xy-4y^2 inches. Write an algebraic

    asked by shay on July 19, 2011
  88. chemistry

    a student dissolves 80 mg of a crude product in 4.5 mL( the minimum required) of methanol at 25 deg C . She cools the solution in an ice bath and obtains crystals. The crystals are recovered by filtration and rinsed with 0.5 mL of ice-cold methanol. After

    asked by sara on February 11, 2013
  89. Chemistry

    An unknown was prepared with the concentration of 0.000520 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1 . The

    asked by Maggie Chuang on January 26, 2008
  90. chemistry

    For Hg2+(aq) + 2e -> Hg(l) E=0.851 V This means that: A) Hg(l) is more readily oxidized than H_2(g); B) Hg^2+(aq) is more readily reduced than H^+(aq) C) Hg(l) will dissolve in 1 M HCl D) Hg(l) will displace Zn(s) from an aqueous solution of Zn^2+ ion

    asked by someone on March 31, 2009
  91. Math

    Stuart needed to purchase cleaning supplies for his company. He purchased 15 rolls of paper towels for $0.65 each, 15 bottles of cleaning solution for $1.25 each, 4 containers of garbage bags for $2.45 each and 3 new mops for $6.98 each. He received a 15%

    asked by Leah on April 20, 2013
  92. college chemistry

    An unknown was prepared with the concentration of 0.000266 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1646.3 M^–1. What

    asked by zahra on April 20, 2009
  93. chemestry

    i don't know how to solve this problem,could anyone is here to give me the correct solution.It will be good for me. In a reactor of 1.5 L the same amount of C and H2O was introduced. When the reaction: C(s) + H2O ⇄ CO + H2 reaches the equilibrium at 1273

    asked by Anonymous on June 19, 2016
  94. Chemistry

    An unknown was prepared with the concentration of 0.000520 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1. The

    asked by Joan on April 19, 2009
  95. chem

    An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1. The

    asked by eve on April 20, 2009
  96. can please somebody tell how to solve this problem

    An unknown was prepared with the concentration of 0.000520 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1. The

    asked by anchal on October 2, 2012
  97. Chemistry

    An unknown was prepared with the concentration of 0.0000890 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1750.0 M–1. The

    asked by Sunny on January 23, 2010
  98. Algebra

    I need help finding the correct answer. I got it wrong on my homework and am studying for my test and need to know how to do it. ln e^lnx-ln(x-3)=ln 8 my wrong answer - no solution correct answer - (24/7)

    asked by Jon on April 12, 2008
  99. College Algebra

    Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions. 2x2 = -2 -5 Thank you

    asked by Sally on March 9, 2013
  100. Chemistry

    1. Commercial vinegar is a solution of acetic acid in water. How would you determine which brand of vinegar contains more acetic acid in a given volume of vinegar?

    asked by Dick Rogers on December 14, 2007