1. English

    Identify each as fragment, run-on, comma splice, or sentence. 1. One legend has it that an old lady tried to dry off her sopping wet dog by putting it in the microwave this legend also predates the microwave oven. A. fragment B. run-on C. comma splice D.

    asked by Heather on April 18, 2018
  2. chemistry

    For corrosion resistance, a steel bolt is plated with nickel from a solution of nickel(II)sulfate. If 0.250 g of nickel produces a plating of the required thickness and a current of 0.540 A is used, predict how long in minutes the process will take

    asked by Alex on April 20, 2008
  3. Chemistry

    What effect would be on the normality of unknown acid? Explain why. a) if NaOH solution is pipetted into a conical flask containing some distilled water b) if an air bubble is out from the burette c) if too much acid is ran out during both titrations

    asked by Peter M.Shaker on May 15, 2014
  4. college chemistry-thermochemistry

    A 1.50g sample of NH4NO3(s) is added to 35.0g of water in a foam cup and stirred intil it dissolves. The temperature of the solution drops from 22.7 to 19.4 degrees celcius. What is the heat of dissolution of NH4NO3, expressed in kJ/mol NH4NO3?

    asked by maryanne on November 8, 2008
  5. history

    president roosevelt implemented a set of programs called the new deal. identify the problem that the new deal was designed to deal with. list other possible solutions and their advantages and disadvantages. then write a short evaluation of the chosen

    asked by hhh on May 27, 2016
  6. Mechanics

    During a soccer game a ball (of mass 0.425 kg), which is initially at rest, is kicked by one of the players. The ball moves off at a speed of 26 m/s. Given that the impact lasted for 8.0 ms, what was the average force exerted on the ball? Show the solution

    asked by Aries on September 19, 2013
  7. Calculus and Vectors

    There is a wind blowing from N80oE at 45 km/h. The airspeed of the plane will be 550 km/h. (a) What direction should the pilot steer the plane (to whole degree)? Include a diagram as part of your solution. (b) What will the actual ground speed be of the

    asked by Anon on October 3, 2018
  8. Chemistry

    Caluculate the mass of ferrous ammonium sulfate (Fe(NH4)2(SO4)2.6H2O) you would need to add to a 4.0 mL volumetric flask to make a solution that is 75 ppm. I've already identified that Fe is 14.24% of the Mohr's salt, but how would the conversion of that

    asked by Ronnie on October 1, 2015
  9. math

    You have a 1200 foot roll of fencing and a large field. You want to make two smaller fields by splitting a rectangular enclosure in half.. 1. Use an algebraic solution to find the dimensions of the largest such enclosure. How big will the enclosure be?

    asked by jill on April 3, 2011
  10. english

    Someone please help me i really need it!? someone please help me....this is 50 points.....i have done it three times already and my teacher keeps giving it back saying do it over...someone please help me. read the following excerpt, and anayzes the authors

    asked by melly on January 11, 2010
  11. criminal justice

    You have just been appointed as the new court administrator for a medium sized court system with approximately 75 employees and five full time courts. This is a new position for the courts, as in the past each individual court has primarily managed itself,

    asked by cupcake on June 25, 2009
  12. human resources

    Castle’s Family Restaurant has eight restaurants in the Northern California area with approximately 300-340 employees. Most of the employees work part time, with approximately 40% full time. The operations manager, Jay Morgan, also acts as the HR manager

    asked by Rich on April 16, 2011
  13. Health (Ms. Sue)

    1. Classify the following as risks to teen mothers, to teen fathers, or to teen parents. a. interrupted education --- teen parents b. limited job options ---- teen parents c. physical stress to bones --- teen mothers d. lower income --- teen fathers? 2.

    asked by Anonymous on December 16, 2013
  14. Accounting

    Problems: Please show all calculations. Claudette, Inc., provides warranties for many of its products. The January 1, 2014, balance of the Estimated Warranty Liability account was $38,500. Based on an analysis of warranty claims during the past several

    asked by Jessica on April 1, 2014
  15. Introduction to Victimology

    •a definition of victimology •its history and how it has developed •explain how its different from criminology, sociology, or psychology •Who established the first safe houses for battered women, as well as where and when these safe-houses were

    asked by clarence cook on May 6, 2013
  16. Math

    Find the solution of the equation. 1. 2x=12 answer: x=6 2. 4x=20 answer: x=5 Did I answer these correctly?

    asked by Tonya on October 31, 2011
  17. 4th grade math

    solve the equation. check the solution 1. a divided by 7= 20 2. d divided by 2=8 3. c divided by 3=15

    asked by mythreyee on November 14, 2013
  18. chemistry

    calculate the OH- concentration in (a) 1.0M NH3 and (b) a solution that is 1.0M in NH3 and also 1.0M in NH4Cl. (Kb = 1.8 x 10^-5 for NH3)

    asked by Ana on April 2, 2011
  19. Chemistry pH

    A 0.60 M solution of a weak acid, HA, has a pH of 3.72. What is the percentage ionization of the acid? What is the value of Ka for the acid?

    asked by Penny on April 17, 2014
  20. General chemistry

    A solution of LiCl in water is 18.0 wt% LiCl. What is the mole fraction of LiCl?

    asked by gaby on April 30, 2010
  21. Trigonometry (Logarithmic Function)

    If log_5(9) = 1.365 and log_5(2)=0.431, then what is log_5(24)? How to find the solution for this one?

    asked by Clint on February 22, 2015
  22. Chemistry

    A 0.60 M solution of a weak acid, HA, has a pH of 3.72. What is the percentage ionization of the acid? What is the value of Ka for the acid?

    asked by Anonymous on April 16, 2014
  23. Math

    An amount at certain rate of s.i become 5 times itself in 3 years.how much times to take to becomes 45 times itself what is the solution

    asked by Anonymous on November 7, 2017
  24. Math

    consider the equations:f(x)=-6x-1 and g(x)=4x^2 Select the solution for (f+g)(x) A) -6x-1+4x^2 B) -24x^3 - 4X^2 C) -24x^2 - 1 D) -6X -1 - 24X^2 I think the answer is A. Please help

    asked by Maria on November 24, 2013
  25. Chemistry

    A 0.23 M solution of a weak acid has a pH of 2.89. What is the Ka(acid ionization constant)for this acid?

    asked by Sarah on November 16, 2010
  26. College Algebra

    Give the real solution set for each of the following: 42) log(6)(x^2+11) + log(6)x = 1 + log (6)(x^2+1)

    asked by Y0gi on November 16, 2010
  27. Chemistry

    A 0.23 M solution of a weak acid has a pH of 2.89. What is the Ka(acid ionization constant)for this acid?

    asked by Sarah on November 16, 2010
  28. Evolutionary Psychology

    It’s the year 2234 and you are an explorer‐scientist who has been sent to a distant planet to study two intelligent life forms recently found there. One lives in the resource‐poor desert regions of the planet. Tests show this creature (a smartine) is

    asked by Aq on December 4, 2008
  29. English

    Can you please tell me if these sentences should be evaluated as grammatically wrong in a test? I'm looking forward to your prompt reply THank you 1) Was the hotel as they expected it to be? The hotel was different from they expected (Correction: No, it

    asked by Franco on July 2, 2010
  30. Statistics

    A statistics student hands each of 300 classmates 2 cookies side by side on a plate. Of the 300 students, 171 choose the cookie that’s on their right hand side, and the remaining 129 choose the cookie that’s on their left. The student says, “That’s

    asked by Amazon on August 2, 2013
  31. Resources For Educating Young Children, Part 1

    I know that I asked you about question 3 but I changed my mind 3. Which one of the following is true regarding group activities? a) Its not necessary for each child to participate b) a role should be planned for each child in the activity c) activities

    asked by beth on July 6, 2011
  32. Social Studies --Repost -- Sam

    Sam, Monday, May 21, 2007 at 4:01pm i need to write a paragraph on a world problem any ideas. World problems include: global warming war in Iraq Palestinian-Israeli conflict destruction of rainforests illegal immigration Wow! Take a look at the front page

    asked by Ms.Sue on May 21, 2007
  33. Math

    In 1974, Johnny Miller won 8 tournaments on the PGA tour and accumulated $353,022 in official season earnings. In 1999, Tiger Woods accumulated $6,616,585 with a similar record. (a) Suppose the monthly inflation rate from 1974 to 1999 was 0.0079. Use the

    asked by Ashton on December 11, 2014
  34. College Algebra

    In 1974, Johnny Miller won 8 tournaments on the PGA tour and accumulated $353,022 in official season earnings. In 1999, Tiger Woods accumulated $6,616,585 with a similar record. (a) Suppose the monthly inflation rate from 1974 to 1999 was 0.0079. Use the

    asked by Ashton on December 10, 2014
  35. Chemistry

    What is the molality of an aqueous solution of sucrose that freezes at -3.00 °C? The freezing point lowering constant for water is -1.86 °C/molal. 0.62 molal 1.62 molal 2.37 molal 5.58 molal

    asked by amanda on June 11, 2010
  36. Physics

    Could someone please tell me what equations i am suppose to use to work out these problems. A capacitor in RC circuit has two overlapping plates of width 3.40 m and length 8.90 m separated by 2.60 cm. A dielectric of dielectric constant being 73.0 fills

    asked by Sam on May 4, 2010
  37. physics

    hey, i was wondering if someone could explain and help me with this problems. please and thank you! A person holds an object of mass m = 4 kg on the palm of the hand with the arm stretched as shown in the attached figure. Use the torque equilibrium

    asked by daniel on November 9, 2010
  38. chem

    How many moles of potassium iodide, KI, are required to precipitate all of the lead(II) ion from 25.0 mL of a 1.6 M Pb(NO3)2 solution? A. 0.020 mol B. 0.040 mol C. 0.080 mol D. 0.64 mol E. 64 mol

    asked by victoria on April 28, 2013
  39. Chemistry

    A .682 g sample of an unknown weak monoprotic acid, HA, was dissolved in sufficient water to make 50mL of solution and was titrated with a .135 M NaOH solution. After the addition of 10.6mL of base, a pH of 5.65 was recorded. The equivalence point was

    asked by Sara on May 10, 2007
  40. Multiplication

    What is the best way to teach my 8 year old her multiplication tables. You'll probably get lots of answers and opinions! I'll tell you what worked with my brother and then with my grandsons -- repetition, repetition, and more repetition -- both verbally

    asked by Patricia on June 15, 2006
  41. English

    I’m having problems in paraphrasing the song “Never Ever” by All Saints. Can you check it, please? I included a sentence on the use of “propose” and one concerning the use of reflexive pronouns. 1) Storm is a bit ashamed of herself. She feels

    asked by Mike on March 10, 2011
  42. Chemistry

    Calculate the concentrations of all species in a 0.810 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4 x 10^-2 and Ka2 = 6.3 x 10^-8 I calculated SO32- = 0.8096 M, HSO3- = 3.58E-4, H2SO3 = 7.1E-13, OH- =

    asked by Katherine on April 21, 2012
  43. CHEM

    A 3.5g sample of potassium chloride(KCl)is dissolved in 10mL of water.The resulting solution is the added to 60mL of a 0.5M CaCl2 soltion. Assuming that the volume are additive,calculate the molar concentration and %w/v of each ion present in final

    asked by RUBY on October 13, 2017
  44. Chemistry

    When 0.100 g of calcium oxide is added to 125 g of water at 23.6°C in a coffee cup calorimeter, this reaction occurs: CaO (s) + H2O(l) -> Ca(OH)2 (aq) ∆H = -81.9kJ/mol If the specific heat capacity of water is 4.184 J g-1 °C-1, what is the final

    asked by John on September 29, 2015
  45. chemistry

    How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 10.20°C and a specific heat capacity of 4.180 J/°Cg? [Hint: ignore any effects of the calorimeter and solve

    asked by shelle on March 31, 2014
  46. science

    which of the following could not be reduced to a simpler piece of matter? compound, solution, element, mechanical mixture? Your exact answer is at the following site: http://www.syvum.com/cgi/online/serve.cgi/squizzes/chem/elements_compounds_mixtures.html

    asked by jenna on June 21, 2006
  47. Physics

    Find the force of tension in the chain. Determine the force of compression in the support bar. Be sure to include a free body diagram as part of your solution. Now the only information given is a mass=20.4 kg and the angle 22 degrees. If anyone could help

    asked by Dani on March 13, 2012
  48. Physics grade 12

    Find the force of tension in the chain. Determine the force of compression in the support bar. Be sure to include a free body diagram as part of your solution. Now the only information given is a mass=20.4 kg and the angle 22 degrees. If anyone could help

    asked by anonymous on March 14, 2012
  49. Math

    Find an equation for the tangent to the curve y=1+ (sqrt2)(csc(X)) + cot(X). I just learned, though my teacher wasn't super good with explaining, derivatives for trig functions but they still aren't making too much sense. Could you please give me a step by

    asked by Cindy on December 16, 2015
  50. chemistry

    calculate the pH of a buffer solution containing 0.200M acetic acid, HC2H3O2, plus 0.150M sodium acetate. The dissociation constant for HC2H3O2 is 1.76 x 10-5 I don't think our instructor gave enough notes on these things Im kind of winging it from the

    asked by Monique on November 11, 2011
  51. chemistry

    What is the order that these four compounds would travel through a silica gel column during liquid chromatography? a) ethylene glycol, HOCH2CH2OH b) aqueous sodium chloride solution, NaCl (aq) c) propanol, CH3CH2CH2OH d) benzene, C6H6 (eluted first), ???,

    asked by mia on April 12, 2008
  52. Salford

    How to prepare 500ml of 7% Question 6 You need to make 500mls of a 7% bovine serum albumin solution. What mass, in grams, do you need to add? Perform the calculation then type in the correct answer to 1dp. Do not add units or additional spaces. 10 points

    asked by Danielle on October 19, 2014
  53. chemistry

    calculate the volume of 0.0321M NaOH that will be required to neutralize 25.00 mL of a 0.0399M hydrochloric acid solution. M1v1=m2v2 since were trying to find out the volume I would change the equation to m2 times V2 divided by M1 0.0399 X 0.025/0.0321

    asked by elizabeth on November 2, 2014
  54. chemistry

    Calculate the potential of the following two half-cells that are connected by a salt bridge: a galvanic cell consisting of a standard hydrogen electrode on the left and a platinum electrode immersed in a solution that is 3.50 3 1023 M in TiO21, 0.07000 M

    asked by Sarah daniels on November 2, 2014
  55. Please help me solve

    How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 12.67°C and a specific heat capacity of 4.180 J/°Cg? [Hint: ignore any effects of the calorimeter and solve

    asked by Ashley on June 23, 2013
  56. chemistry

    Why is it important that the sequence of addition of reagents be followed? What could possibly go wrong when this is not followed? Reagents added: 1st: Fe3+ solution 2nd: 2.00 mL 10% NH2OH-HCl (hydroxylamine hydrochloride) 3rd: excess 0.20%

    asked by smiley on September 15, 2007
  57. chem

    150 cm3 0.24 M naoh solution react with excess al(no3)3, calculate the mass of saodium aluminate produced. al(no3)3 + 4naoh -> naalo2 + 3 nano3 +2h20 i got 0.738g.. is my answer correct? if im wrong could u show me the calculation?

    asked by Yuni on September 16, 2011
  58. chemistry

    Why is it important that the sequence of addition of reagents be followed? What could possibly go wrong when this is not followed? Reagents added: 1st: Fe3+ solution 2nd: 2.00 mL 10% NH2OH-HCl (hydroxylamine hydrochloride) 3rd: excess 0.20%

    asked by smiley on September 15, 2007
  59. Chemistry(Please help)

    Calculate the pH of an aqueous solution of 0.15 M potassium carbonate. I know that pH = -log(H30+) but I am not sure how to start this problem. Chemistry(Please help) - DrBob222, Saturday, April 14, 2012 at 11:09pm Hydrolyze the CO3^2-. CO3^- + HOH ==>

    asked by Hannah on April 17, 2012
  60. Chemistry

    The pH of a 0.050 ammonium chloride solution was experimentally determined to be 5.45. a. write the equation for the chemical reaction that determines the pH? I wrote the actual equation as NH4^+(aq) + H2O(l) ->/

    asked by Mark on May 9, 2019
  61. Chemistry

    I'm clueless on this take-home quiz we have. Calculate the concentration of (Co3)2- in a solution made by dissolving 1 mole of Co2 in 1 L of water. The hydration equilibrium constant Kh of Co2 at 25C is 1.70x10-3, Ka1 of H2CO3=2.5x10^-4, and

    asked by Clarissa on November 23, 2008
  62. How do I solve for this??

    How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 12.67°C and a specific heat capacity of 4.180 J/°Cg? [Hint: ignore any effects of the calorimeter and solve

    asked by Ashley on June 24, 2013
  63. Algebra2

    Find the polynomials roots to each of the following problems: #1) x^2+3x+1 #2) x^2+4x+3=0 #3) -2x^2+4x-5 #3 is not an equation. Dod you omit "= 0" at the end? #2 can be factored into (x+1)(x+3) = 0, so the roots are x=-1 and -3. #1 Use the quadratic

    asked by Haylee on May 13, 2007
  64. Calculus AB

    Sorry but I've got a lot of problems that I don't understand. 1) Let f(x)= (3x-1)e^x. For which value of x is the slope of the tangent line to f positive? Negative? Zero? 2) Find an equation of the tangent line to the oven curve at the specified point.

    asked by Annie on October 30, 2016
  65. chemistry

    Carbonic acid, H2CO3, decomposes into water and a gas. Write the molecular equation for this decomposition. Remember to include the states of the reactants and products. Carbonic acid is an aqueous solution.

    asked by thad on January 9, 2013
  66. Trig

    the horizontal speed of an airplane is 183mph. the magnitude of the plane's velocity is 200mph. write an expression describing the angle the angle the plane is climbing my solution: cos-1 183/200 is this right

    asked by luckybee on January 8, 2012
  67. chemistry

    If there are 0.561 g of NaCl left in a beaker that originally contained 75.0 mL of saltwater, what must have been the molar concentration of the original solution? The molar mass of NaCl is 58.44 g/mol. Give your answer to 3 decimal places

    asked by Kaylin on September 10, 2014
  68. Math

    In solving the eqaution(x+4)(x-4),Eric stated thatthe solution would be x+4=33=>x=29 or (x-4)=33=>x=37 However, at least one of these solutions fails to work when substituted back into the original eqaution. Why is that?Help Eric to understand better,solve

    asked by Sonya on February 16, 2011
  69. Math-Geometry

    I have to calcualte the volume of a cone. The height is 2.1 ft, and the base is 2 inches. I keep coming up with the answer of 8.792 cu ft. There is 4 choice answers given: 0.061 ft,0.610 ft,6.125 ft and 2.016 ft. I have tried several calculators, none of

    asked by Tammy on February 12, 2013
  70. General Chemistry

    Ferric Hydroxide, Fe(OH)3, is an insoluble salt with a solubility of 10^-39. 1) What is the maximum concentration of ferric hydroxide that can dissolve? 2) Using Le Chatalier's Principle, explain why iron (III) solutions are more soluble in acidic

    asked by Henry on May 20, 2016
  71. Chem

    A 175-g sample of water is saturated with KNO3 at 40ºC. What mass of KNO3 forms a precipitate if the solution is cooled to the freezing point of water? (Refer to the Solubility and Temperature graph.)

    asked by Marie on May 24, 2016
  72. chemistry

    Calculate the pH of each of the following strong acid solutions. 0.697 g of HClO3 in 2.97 L of solution. so i convenrted grams to moles then moles/L to get M of HCl03 then i did -log of that cocentration and put htat as the ph. did i do something wrong? i

    asked by hannah on March 2, 2013
  73. mathematical

    Having mathematical standards in grades K-12 will give students clear and realistic expectations of what they are expected to learn in mathematics. The following solution explains this importance for students as well as the impact standards have on what

    asked by Anonymous on March 15, 2011
  74. Calculus please help

    please help I can not understand this. I need an implicit form answer for the general solution of differential equation dy/dx=2(e^x-e^-x)/y^2(e^x+e^-x)^4 with (y>0). I have separated the y^2 to the left hand side to become 1/3y^3 but have no idea how to

    asked by Brian on February 18, 2011
  75. Precalculus

    I'm a little uneasy about this one, so I thought I'd ask someone who knows - [QUOTE] (5z^3w/-6m^3)*(-6m^5/25z^9) (OR) 5z^3 -6m^5 ------ * -------- -6m^3 25z^9 Perform the Operations and Simplify[/QUOTE] It's a Multiple Choice. a)wm^2/5z^5 b)wm^2/5z^6

    asked by Michael on May 1, 2008
  76. science

    what is the concentration of hydrogen ion in a 0.1M solution of sodium hydroxide(NaOH)? NaOH dissolves and completely dissociates in H2O to form the ions. NaOH ==> Na^+ + OH^- Therefore, starting with 0.1 M NaOH will give you 0.1 M in Na^+ and 0.1 M in

    asked by michelle on December 31, 2006
  77. Chemistry

    Suppose u place a beaker containing a solution in a refrigerator , an hr later a white solid is found on thr bottom of thr beaker. What happened. Why? I think a precipitate formed, but can any1 explain briefly so i can understand better? Thanks

    asked by Mia on February 23, 2013
  78. Chemistry

    10.0 g of an unknown acid is titrated to the equivalent point using 65.0 ml of 0.150M KCH. Assuming the acid is monoprotic ( like HCL or HF ) , what is the molecular mass of the acid? Is it possible to find the mols of the acid? (Balanced equation &

    asked by Gage on June 6, 2014
  79. Chemistry

    10.0 g of an unknown acid is titrated to the equivalent point using 65.0 ml of 0.150M KCH. Assuming the acid is monoprotic ( like HCL or HF ) , what is the molecular mass of the acid? Is it possible to find the mols of the acid? (Balanced equation &

    asked by Gage on June 6, 2014
  80. Algrebra II-please check my answer

    Determine the zeros of the function 7x^2 + 9x = 0 answers were: {-9/7} {-9/7,0} {o,9/7} {9/7} I think the answer is {-9/7,0} but I'm not positive when I worked it-If this is wrong please steer me into the correct calcs because then I don't what I'm doing

    asked by Sammy on January 14, 2011
  81. chemistry

    What is the freezing pint of 0.0091 m aqueous sodium phosphate, Na3PO4? Assume that sodium phosphate is a strong electrolyte and it functions ideally in solution. (express your answer in degrees Celsius)

    asked by shawn on September 14, 2010
  82. Chemistry

    if 225 mLs of .50 molars of hydrofloric (HF) acid solution is reacted with 25.5 grams of solid zinc what is the most (in grams) aqueous zinc flouride that would be produced? Based on this, how much nonlimiting ractants will be left over?

    asked by Nicole on March 14, 2011
  83. chemistry

    A 32.5 g sample of K2SO4 is dissolved in a quantity of water and stirred well. A 40.00 mL sample of the solution is evaporated to dryness and leaves behind 5.00 g of solid K2SO4.what is the molarity. Calculate molar masses of solutes to .01 grams

    asked by mark on April 26, 2015
  84. Chemistry

    A 15.00 ml sample of a standard solution containing 1 g of CaCO3/L required 8.45 ml of EDTA to fully complex the Ca present. Calculate the volume of EDTA stoichiometrically equivalent to 1.0 mg of CaCO3.' Sorry, forgot to write the entire question.

    asked by Anonymous on February 28, 2010
  85. chemistry

    The UNBALANCED equation is: Zn + HCl –] ZnCl2 + H2 How many milliliters of a 0.48 M HCl solution are needed to react completely with 7.4 g of zinc to form zinc(II) chloride? Answer in units of mL. 7.4/100.84g*2 mol

    asked by Kiley on November 23, 2015
  86. Chemistry

    For the reaction NaOH + HCl---> H20 + NaCl where the mass of NaOH is 2g and the Volume of Hcl is 100ml with a concentration of 0.5 mol/l. The initial temp is 25 and the final is 35, what is the amount of energy absorbed by the solution?

    asked by Hyde on May 4, 2010
  87. chemistry

    Calculate the pH of a 5.75×10-2 M solution of the weak acid HCN (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). Round your answer to 3 significant digits. HCN = CN- + H+

    asked by HELP ASAP PLEASE on October 10, 2013
  88. chemistry

    Calculate the solubility of Cacl2 in g/L based on the experiement. Given 650g of CaCl2 added to 1.0L and allowed to dissolve as much as possible. While the remaining solid CaCl2 is filtered out of the solution and found to have a mass of 5.509g. What is

    asked by Greg on June 6, 2012
  89. Chemistry II

    What is the molar concentration of a solution produced by dissolving 1.234 g (NH4)2CrO4 in water and diluting to a total final volume of 300.0 ml? (mass of {NH4}2CrO4 is 152.03 g/mol).

    asked by Angela on September 3, 2013
  90. chemistry

    Under an O2 pressure of 1.00 atm, 28.31 mL of O2 dissolves in 1.00 L H2O at 25 degrees. Determine the molarity of O2 in an aqueous solution at equilibrium with air at normal atmospheric pressure. The volume percent of O2 in air is 20.80 \%. (Have no idea

    asked by david on February 20, 2010
  91. chemistry

    can someone please help me with this? i've been stuck on this one forever... A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality

    asked by Anonymous on October 4, 2010
  92. Chemistry

    An aqueous solution of volume, v1 cm3, contains a mass, mg,of a compound to be extracted. When shaken with v2 cm3 of an organic solvent, a certain proportion, x, of this compound dissolves. Derives an expression for x in terms of v1, v2 and the partition

    asked by Shariah on February 1, 2017
  93. Science

    Chlorine gas was bubbled through a warm concentrated solution of potassium hydroxide. -write an equation of reaction that took place -describe how pure crystals potassium chlorate (5) may be obtained from the reaction above

    asked by Piom on July 30, 2011
  94. Chemistry

    Calculate the pH of a 0.18 M solution of cyanide ion, CN- given the Ka (HCN) = 6.2 x 10^-10. I know how to calculate Ka and Kb values no problem, but I don't know which value to use in my calculations. Is it based on the conjugate base/acid formed or

    asked by Tim on December 2, 2015
  95. Chemistry

    A solution is made by mixing 25.0 mL of toluene C6H5CH3 d=0867gmL with 135.0 mL of benzene C6H6 d=0874gmL . Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are how would i start this problem?

    asked by Riley on April 7, 2008
  96. chemistry

    Phenylacetic acid (C6H5CH2COOH) is one of the substances that accumulates in the blood of people with phenylketonuria, an inherited disorder that can cause mental retardation or even death. A 0.021 M solution of C6H5CH2COOH has a pH of 2.99. Calculate the

    asked by hannah on March 4, 2013
  97. CHEM - PLS help!!

    What would the equation look like if you added bromine (Br) in the presence of CH2Cl2 (Dichloromethane) to cyclohexanol (C_6H_11 OH). Would the solution become saturated or not??? What would the colour change be...if any?? Would a precipitate be formed??

    asked by K on February 25, 2008
  98. intermediate algebra

    In solving the equation (x-1)(x+2)=30. Eric stated that the solution would be x-1=30¨T¡úx=31 or(x-2)¨T30¨T¡úx=32 However, at least on of these solutions fails to work when subsitituted back into the orignal equation. Why is that? Please help Eric to

    asked by ROCKY on July 28, 2011
  99. Chemistry

    Calculate the volume of 1.0 M copper(II) sulfate solution required to completely react with 1.0 g of Fe(s) according to this equation: 2 Fe(s) + 3 Cu^2+ (aq) --> 2 Fe^3+ (aq) + 3 Cu (s). the copper in the reactant has a charge of 2+ and the iron in the

    asked by Sabrina on March 5, 2013
  100. chemistry

    Under an O2 pressure of 1.00 atm, 28.31 mL of O2 dissolves in 1.00 L H2O at 25 degrees. Determine the molarity of O2 in an aqueous solution at equilibrium with air at normal atmospheric pressure. The volume percent of O2 in air is 20.80 \%. (Have no idea

    asked by david on February 20, 2010