osmotic pressure chemistry

10,993 results, page 2
  1. CHEMISTRY

    the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

    asked by lulu on October 14, 2010
  2. CHEMISTRY

    the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

    asked by lulu on October 14, 2010
  3. statistics

    At a certain college, 15% of the students receieved an A in their required math cousre, 10% receieved an A in their required chemistry course, and 5% receieved an A in both. A student is selected at random. a.) What is the probability that he received an A

    asked by Sharon on October 4, 2009
  4. Calculate Osmotic Pressure

    69.7 grams of a solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm3 of solution at 20 degrees C. What is the osmotic pressure of the soluton?

    asked by Jose Reyes on December 7, 2010
  5. Chemistry

    a solution of 4.65 of a carbohydrate in 100.0g of water has a density of 1.016g/mL and an osmotic pressure of 3.18 atm at 20.0 degrees celcius. calculate the molar mass of the carbohydrate.

    asked by Amy on February 16, 2011
  6. Chemistry

    What is the density of an aqueous solution of potassiu nitrate that has normal boiling point of 103 celsius and an osmotic pressure of 122 atm at 25 celsius?

    asked by Anmol on February 20, 2010
  7. chemistry

    find the average molar mass of polyethylene when 4.40 g of the polymer is dissolved in benzene to produce 200.0 mL of solution and the osmotic pressure is found to be7.60 torr ant 25 celcious Degree.

    asked by Anonymous on April 2, 2012
  8. chemistry

    High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa ) to about 60,000 kPa (60,000,000 Pa ). It is often

    asked by dakota on March 18, 2015
  9. Chemistry

    High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa ) to about 60,000 kPa (60,000,000 Pa ). It is often

    asked by dakota on March 11, 2015
  10. Chem

    This is also from the lab concerning activity serious of metals and calculation of electrode portentions... Question: What are the standard conditions for measuring potentials? Does that mean... Standard condition for temp: 298K Concentration: 1 molar

    asked by Marisol on March 29, 2007
  11. Chemistry

    What mass of sucrose (C12H22O11) would you combine with 5.28 102 g of water to make a solution with an osmotic pressure of 9.14 atm at 298 K? (Assume a density of 1.0 g/mL for the solution.) I came up with 67.5 but no luck...help please!!

    asked by Anonymous on July 3, 2012
  12. ap chemistry

    a solution is prepared by dissolving 4.9 g C12H22 O11 (nonelectrolyte) in 175 grams of water. calculate the freezing poitn and osmotic pressure (25C) of this solution.

    asked by yeng on January 7, 2015
  13. chemistry

    With respect to Boyle's law (lab experiment with textbooks on an apparatus), if in the classroom the air pressure in the classroom is equal to 2.4 textbooks, how does one find the total pressure of a book with the volume of 26? Am I on the right track by

    asked by Rosie829 on April 4, 2011
  14. Chemistry

    Nitric oxide (NO) reacts with molecular oxygen as follows: 2NO(g) + O2(g) ¨ 2NO2(g) Initially NO and O2 are separated as shown below. When the valve is opened, the reaction quickly goes to completion. Determine what gases remain at the end of the

    asked by Sarah on November 1, 2010
  15. Chemistry

    A solution is prepared by dissolving 35g hoemoglobin in water to make 1 litter. If osmotic pressure of solution is 10.00mmHg at 25 degree centigrade. Calculate the molarmass of the hoem6globin

    asked by Shuhudaht on June 11, 2015
  16. General Chemistry

    how many grams of a protein weighing 4500 grams/ mol must be present in 100 ml of water solution to a given osmotic pressure of 18 mm hg at 25 degrees celcius...( use formula of pie = Mrt

    asked by Sarah on December 12, 2010
  17. Chemistry

    A 271-mL of a sugar solution containing 1.79g of the sugar has an osmotic pressure of 30.1 mmHg at 35.1 degrees C. What is the molar maas of the sugar?

    asked by John on October 18, 2010
  18. Chemistry

    Intravenous medications are often administered in 7% glucose (C6H12O6). what is the osmotic pressure of such solutions at 44 degrees C (body temperture)? the density of the solution is 1 g/mol. I would convert the percent concentration to Molarity. (Broken

    asked by Camden on February 11, 2007
  19. chemistry

    A solution is prepared by dissolving 49.0 g of glucose (C6H12O6) in 225.0 g of water. The density of the resulting solution is 1.23 g/mL. Determine the osmotic pressure (in Pa) of this solution at 25.0 oC.

    asked by G-Unit 32 on February 10, 2010
  20. Biology

    What is the osmotic pressure of the salt solution in reverse-osmosis? Select one: a. An equilibrium state where the amount of solvent passing in opposite directions is equal b. An equilibrium state where the amount of solvent passing in one direction is

    asked by Clara on May 21, 2015
  21. chemistry

    pepsin is an enzyme involved in the process of digestion. its molar mass is about 3.50 x 10^-4 g/mol. what is thr osmotic pressure in mm Hg at 30 degree oC of a 0.400g sample of pepsin in 55.0mL of an aqueous solution?

    asked by mickey on August 26, 2014
  22. Chemistry

    What osmotic pressure in atmospheres would you expect for a solution of 0.150M CaCl2 that is separated from pure water by a semipermeable membrane at 310 K? Assume 100% dissociation for CaCl2 Any help is appreciated, thank you!

    asked by Joe on September 21, 2014
  23. chemistry

    Hi you guys please help me with my chemistry homework, i need to find all these items and take them to my class in a ziploc bag *a hydrocarbon with a molecular mass greater than 100g/mol *2 porpanol *an aromatic compound(not the common usage of "aromatic"

    asked by desperate on February 5, 2007
  24. chemistry

    A dilute aqueous solution of CaCl2 contains 0.159 grams of solute per liter of solution. It is fully dissociated. What is the osmotic pressure of the solution against a membrane at 20.0 °C?

    asked by sarah on September 29, 2011
  25. Chemistry

    A flask of known volume was filled with air to a pressure of 3.6atm. This flask was then attached to an evacuated flask of known volume and the air was allowed to expand into the flask. The final pressure of the air (in both flasks) was 2.7atm and the

    asked by Scott on August 27, 2016
  26. Chemistry

    1. If an aqueous solution that is 0.15 M in HF has an osmotic pressure of 3.9 atm at 25oC, what is the percent ionization of HF at this concentration? 2. A mixture of 2 volatile liquids is said to be ideal if each component obeys Raoult’s Law: Pi=XiPio

    asked by Michelle on February 5, 2015
  27. chemistryyyy

    A solution is made by dissolving 0.0100 mol of HF in enough water to make 1.00 L of solution. At 23 °C, the osmotic pressure of the solution is 0.308 atm. What is the percent ionization of this acid? Please help.

    asked by Jake on February 19, 2012
  28. Chemistry Science Project

    I need some ideas for high school science projects. It doesnt really matter what field of science, but i would prefer chemistry, biology, or physics. Really Urgent! Thanks! What about a project on osmotic pressure. Put a salt solution inside a thistle

    asked by Rachel on March 8, 2007
  29. chemistry

    I have a chemistry project where I need to make an object move using my knowledge of chemistry. The object os a small ball the size of a large marble. It must be moved using chemistry and NOT physics (ie slope wind etc). I am 15 and in grade 11.

    asked by Didier on April 8, 2010
  30. CHEMISTRY PLS HELP

    If a sample of red blood cells at an osmotic pressure of 7.70 atm is placed in a solution that contains 0.050M calcium chloride (CaCl2) at 25°C, what is the freezing point of this solution if the density of the solution is 1.50 g/mL

    asked by BYU on October 5, 2016
  31. byu

    If a sample of red blood cells at an osmotic pressure of 7.70 atm is placed in a solution that contains 0.050M calcium chloride (CaCl2) at 25°C, what is the freezing point of this solution if the density of the solution is 1.50 g/mL

    asked by CHEMISTRY PLS HELP on October 5, 2016
  32. chemistry

    A solution prepared by adding 0.17 g of a polymer to 0.6 L of toluene (methylbenzene, a common solvent) showed an osmotic pressure of 0.808 Torr at 21â—¦C. What is the molar mass of the polymer? Answer in units of g/mol.

    asked by Anonymous on November 27, 2017
  33. chemistry

    A 1.10- sample contains only glucose and sucrose . When the sample is dissolved in water to a total solution volume of 25.0 , the osmotic pressure of the solution is 3.78 at 298 .

    asked by bf on January 25, 2010
  34. Chemistry

    an aqueous solution contains 1.00g/L of a derivative of detergent lauryl alcohol.the osmotic pressure of this solution at 25 °c is 2.0 x 10³ Nm-², what is the molar mass of the detergent.

    asked by Eleanya on March 4, 2018
  35. science

    out of following solution which possesses lowest osmotic pressure,highest boiling point and highest frezzing point 1M KCl,1MNa3PO4 and 1M glucose.

    asked by sunidhi on June 21, 2016
  36. chemistry

    osmotic pressure of a solution containing 7g of protein in 100ml of solution is 20mmhg at37celsius calculate molecular mass of the protein

    asked by himanshu on January 29, 2014
  37. Chemistry

    An aqueous solution containing 10.50 g of a compound in 100.0 ml of solution has an osmotic pressure of 0.0187 atm. at 25°C. What is the molecular weight of the compound?

    asked by Sean on March 31, 2013
  38. Chemistry

    My teacher gave us the answer to a chemistry problem and i cannot figure out how she got the answer. Can you help me work out this problem so i can better understand it. A gas under an initial pressure of 0.60atm is compressed at a constant temperature

    asked by Steven on March 19, 2012
  39. Chemistry

    A protein has a molecular weight of 98,300 grams/ mole. What will be the osmotic pressure if 0.128 grams of this protein I dissolved in 15.0 ml of water at 20 degrees calcias?

    asked by Nad on December 17, 2012
  40. physical chemistry

    The freezing point of a sample of abnormal blood was found to be -0.402 degree celsius. Estimate its osmotic pressure at 37 degree celsius. Kf(water)=1.86

    asked by yogita n sarki on January 24, 2011
  41. chemistry

    A solution containing 26.05 mg of an unknown protein per 23.5 mL solution was found to have an osmotic pressure of 3.75 torr at 44 C. What is the molar mass of the protein?

    asked by M on January 25, 2010
  42. Chemistry

    A solution containing 26.40 mg of an unknown protein per 22.5 mL solution was found to have an osmotic pressure of 3.95 torr at 21 C. What is the molar mass of the protein?

    asked by RE on September 17, 2009
  43. chemistry

    A solution contains 0.02755 g of a protein in 25.0 mL of solution. The osmotic pressure is 3.22 torr at 298 K. What is the molecular weight of the protein?

    asked by m on February 17, 2013
  44. chem

    What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius?

    asked by hadi on December 14, 2015
  45. Chemistry

    Calculate the osmotic pressure of a 6.0 × 10-2 M solution of NaCl at 20°C (293 K). Okay when I set up problem MRT....I get something totally different from the answer 2.9 atm. Could u please show me your set up to get to 2.9 atm? Thanks a billion!!

    asked by Chemistry Chick on October 29, 2011
  46. CHM 152

    The freezing point of an aqueous solution of glucose was measured to be -1.52 oC. What is the osmotic pressure, in atm, of 100 mL of this solution at 25.0 oC? (Kf = 1.86 oC/m) When I calculated it out I got 16.79 atm but the answer was wrong don't know

    asked by Car on June 11, 2010
  47. college chem

    What mass of sucrose should be combined with 524 g of water to make a solution with an osmotic pressure of 8.50 atm at 270 K? (Assume the density of the solution to be equal to the density of the solvent.)

    asked by moe on September 13, 2010
  48. chemistry

    at a temperature of 5 celsius, 21.5 mg of a non electrolyte is dissolved in enough water to make a 150.0 ml solution. the osmotic pressure of the solution is 0.200 atm. what is the molar mass of the substance dissolved

    asked by amelia on September 8, 2014
  49. Science

    A solution is prepared by dissolving 4.9 grams of sucrose in 17gram of water. At 25 degree Celsius find the boiling point, freezing point and osmotic pressure of this solution.

    asked by Amara on December 19, 2018
  50. chemistry

    If 6.38 g of a polyethylene glycol is dissolved in 7550 ml of water at 300 oK, the solution has an osmotic pressure of 0.171 torr. Calculate the molar mass (g/mol) of the polyethylene glycol.

    asked by eng on January 29, 2010
  51. chemistry

    What mass of sucrose should be combined with 491 g of water to make a solution with an osmotic pressure of 8.70 atm at 270 K? (Assume the density of the solution to be equal to the density of the solvent.)

    asked by ashley on August 5, 2010
  52. CHEMISTRY

    Which of the following solutions do they have the maximum osmotic pressure : 1) 0.1 m ( molal conc.) glucose 2) 0.1 m sucrose 3) 0.5 m glucose 4) 0.2 m sucrose and why ?

    asked by MAD on July 14, 2014
  53. Chemistry

    The osmotic pressure of solution containing 4 g of the solute per litre of the solution is 0.41 atm at 27. What is the molecular weight of the solute?

    asked by Evans on August 13, 2018
  54. chemistry

    why is the osmotic pressure of 10 mole solution sodium chloride larger than that of sodium nitrate solution

    asked by taher on May 24, 2010
  55. Chemistry

    What mass of sucrose (C12H22O11) should be combined with 477g of water to make a solution with an osmotic pressure of 8.15atm at 275K ? (Assume the density of the solution to be equal to the density of the solvent.)

    asked by chemstud on February 8, 2015
  56. chemistry

    Phenylalanyl aspartate, Nutrasweet, is an artificial sweetener used in many diet drinks. If a solution prepared by dissolving 6.068 mg of Nutrasweet in 125 milliliters of water exhibited an osmotic pressure at 25ºC of 3.23 mm Hg, what is the molar mass of

    asked by Laffy Taffy on March 11, 2012
  57. chemistry

    Cellobiose(a nonvolative, nonelectrolyte) is a sugar obtained by degratation of cellulose. If 200.mL of an aqueous solution containing 1.500g of cellobiose at 25C give rise to an osmotic pressure of 407.2mmHg. What is the molecular mass of Cellobiose?

    asked by Anonymous on September 12, 2012
  58. Chem AP

    A 0.505-g sample of a compound is dissolved in enough water to form 100.0 mL of solution. This solution has an osmotic pressure of 2.56 atm at 25°C. If each molecule of the solute dissociates into two particles (in this solvent), what is the molar mass of

    asked by Me on February 3, 2014
  59. Choosing High School Courses

    I want to major in something English or History related, probably Secondary Education, International Studies, or Journalism. I am currently enrolled in chemistry and I am doing horribly. Would colleges rather see me take chemistry and get a bad grade, or

    asked by Corinne on February 23, 2009
  60. Chemistry

    In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 58.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 C when the reverse

    asked by Tracy on February 19, 2012
  61. chemistry

    calculate the osmotic pressure of a solution obtained by mixing 100ml of 0.25M solution of urea and 100ml of 0.1m solution of cane sugar at 293k

    asked by sumit on June 6, 2013
  62. CHEMISTRY

    1.Chemistry Question: A 0.1 M solution of acetic acid is titrated with 0.05M solution of NaOH. What is the pH when 60% of the acid has been neutralized? The equilibrium constant (Ka) for acetic acid is 1.8x10^-5 2. Chemistry question: On average, how far

    asked by Gerald on August 21, 2010
  63. Science

    Which branches of science do pharmacists need knowledge of to do their job properly? A.physics and chemistry B.biology and chemistry C.chemistry and geology D.physics and computer science Is the answer B?

    asked by Gwen on August 19, 2014
  64. Chemistry

    An aqueous salt solution has a freezing point of -.5 degrees Celsius and causes neither swelling or shriveling of cells. The kf of water is 1.86 K kg/mol. What is the osmotic pressure that is exerted on cells when placed in pure water? (ignore differences

    asked by Anonymous on February 15, 2014
  65. Chem

    When 0.10 g of insulin is dissolved in 0.200 L of water, the osmotic pressure is 2.30 Torr at 20°C. What is the molar mass of insulin? I tried using the van't hoff equation, converting Torr into atm; but not sure how to do it. my teacher didn't really

    asked by Mark on February 16, 2010
  66. Chemistry: Freezing point

    An aqueous solution is prepared by dissolving 1.08 g of human serum albumin, a protein obtained from blood plasma, in 50.0 mL of water. The solution has an osmotic pressure of 0.00770 atm at 298 K. What is the molar mass of the albumin? Answer: 6.86 x 10^4

    asked by JJ on February 25, 2013
  67. Science

    What is the boiling point of ethanol when the atmospheric pressure is 60kPa? I decided to repost this ? under Science instead of Chemistry. Thanks.

    asked by Gerald on April 15, 2012
  68. statistics

    At a certain college, 15% of the students received an A in their required math course, 10% received an A in their required Chemistry course, 5% received an A in both. A student is selected at random. a.) What is the probability tha he receieved an A in

    asked by Sharon on October 2, 2009
  69. statistics

    At a certain college, 15% of the students received an A in their required math course, 10% receieved an A in their required chemistry course, and 5% received an A in both. A student is selected at random. a.) What is the probability that he received an A

    asked by Sharon on October 3, 2009
  70. chemistry

    Arginine vasopressin is a pituitary hormone. It helps regulate the amount of water in the blood by reducing the flow of urine from the kidneys. An aqueous solution containing 21.6 mg of vasopressinin 100.0 mL of solution has an osmotic pressure at 25 ¢ªC

    asked by george on April 15, 2013
  71. ecc

    Arginine vasopressin is a pituitary hormone. It helps regulate the amount of water in the blood by reducing the flow of urine from the kidneys. An aqueous solution containing 21.6 mg of vasopressinin 100.0 mL of solution has an osmotic pressure at 25 ¢ªC

    asked by george on April 15, 2013
  72. Chem II

    What is the boiling point of an aqueous solution of a non electrolyte that has an osmotic pressure of 10.50atm at 25 degrees C? Kb of water is 0.52 degrees C/m. Assume the density of the solution is the same as that of pure water.

    asked by Ken on June 7, 2008
  73. chemistry

    1.00 of an aqueous solution contains 1.52g of a compound used in antifreeze. If the osmotic pressure of this solution at 20.0 degree C is 448 torr, calculate the molar mass of the antifreeze compound

    asked by courtney on April 28, 2014
  74. Chemistry

    An aqueous solution of a compound with a very high molar mass was prepared in a concentration of 82.7 g·L-1 at 25 °C. Its osmotic pressure was 0.540 ·102 Pa. Calculate the molar mass of the compound. Cheers

    asked by David on April 28, 2010
  75. Chem

    why is an understanding of chemistry important in biology? All digestion, nutrition, muscle usage/reactions, cell division/reproduction, and all of the enzymatic processes at work in the body are chemisty. Even eyesight is a chemical reaction. So you need

    asked by Samantha on June 18, 2006
  76. Chemistry

    A solution is prepared by dissolving 5.00g of an unknown molecular solid in water to make 500 ml of solution. The osmotic pressure of the solution is 1.61 atm at 25 degrees C. What is the molar mass of the solute? This is what ive done so far: M=

    asked by James on September 8, 2010
  77. Chemistry

    An aqueous solution is composed of 7.50 g NaCl (MM = 58.44 g/mol) diluted to 0.100 L. Calculate the osmotic pressure of the solution at 298 K a. 5.83 atm b. 9.22 atm c. 18.3 atm d. 62.8 atm

    asked by Kat on February 6, 2016
  78. Chemistry

    When treating a patients physicians use an isotonic means that this solution will have the same osmotic pressure as the body fluid such as blood. how many grams of glucose (C6H12O6) is in 100.0 g of H2O in the isotonic glucose solution (5.00% m/m)?

    asked by Tina on December 10, 2014
  79. chemistry

    472 mL of H2 gas was collected over water when 1.256 g of Zn reacted with excess HCl. The atmospheric pressure during the experiment was 754 mm Hg and the temperature was 26 degrees C. A. Write the balanced chemical equation (I have this) Zn + HCl --->

    asked by Jeremiah on November 19, 2012
  80. chemistry

    A solution containing 29.00 mg of an unknown protein per 22.0 mL solution was found to have an osmotic pressure of 3.10 torr at 18 ∘C. What is the molar mass of the protein? (3.10 torr* 22mL)=.682 I do not know what to do next

    asked by mmp on February 29, 2016
  81. Chemistry 2

    In a study designed to prepare new gasoline resistant coatings, a polymer chemist dissolves 6.053g of poly in enough water to make 100.0 mL of solution. At 25C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer

    asked by Mike on March 26, 2010
  82. Chemistry

    Assuming that sea water is a 3.5 wt % solution of NaCl in water, calculate its osmotic pressure at 20°C. The density of a 3.5% NaCl solution at 20°C is 1.023 g/mL.

    asked by Bob on April 13, 2010
  83. chemsitry

    How will the osmotic pressure of an aqueous solution change as evaporation occurs? does it even change? or does it increase? evaporation will increase concentration, correct?

    asked by sam on May 1, 2007
  84. Chemistry

    Suppose you have to prepare 1.00 L of the solution ( KH2PO4 and Na2HPO4 pH=7.31) and that this solution must be isotonic with blood (have the same osmotic pressure as blood). What mass of KH2PO4 would you use?

    asked by Pepz on March 16, 2013
  85. Math

    If you pass general chemistry, then you can take organic chemistry. You pass general chemistry. ˆ You can take organic chemistry. Let P = you pass general chemistry Let Q = you can take organic chemistry I came up with P - >Q P therefore Q But my set up

    asked by Madison on January 21, 2011
  86. Chemistry

    A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.135g of this subunit was dissolved in enough water to produce 2.00 mL of solution. At 28 ∘C the osmotic pressure produced by the solution was 0.138

    asked by Al on June 27, 2014
  87. chemistry

    The osmotic pressure of a solution containing 5.00 mg of an unknown protein per 10 mL of solution was 2.73 torr at 25 °C. Find the molar mass of the unknown protein.

    asked by lily on September 11, 2011
  88. chemistry

    1. If a gaseous sample contains 73% N2 by volume, what is the solubility of N2 in water at 25°C and 1.0 atm (kH in H2O at 25°C = 7.0 10-4 mol/Latm)? 2. Calculate the vapor pressure of a solution of 0.60 mol of cholesterol in 4.5 mol of toluene at 32°C.

    asked by Ashley on January 31, 2011
  89. Chemistry

    A saturated solution is made by dissolving 0.325 g of a polypeptide (a substance formed by joining together in a chainlike fashion some number of amino acids) in water to give 1.37 L of solution. The solution has an osmotic pressure of 4.13 torr at 28 °C.

    asked by Luke on July 14, 2014
  90. 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

    asked by Lynn on November 30, 2010
  91. chemistry

    Two containers of equal volume are separated by a membrane that allows free passage of water but completely restricts passae of solute molecules. Into which compartment will water flow, or will there be no net movement of water? Which solution is at the

    asked by rena on August 8, 2013
  92. chemistry

    Two containers of equal volume are separated by a membrane that allows free passage of water but completely restricts passae of solute molecules. Into which compartment will water flow, or will there be no net movement of water? Which solution is at the

    asked by rena on August 8, 2013
  93. Chemistry

    I am confused about why this is the answer to a practice problem I was given. (answer is c). Could someone explain why/why not for each answer? 2) Solution A is made from 1 L of water and 0.1 moles of Na(CH3COO), and Solution B is made from 1 L of water

    asked by Trixie on March 8, 2010
  94. Chemistry

    Here is my question and I,m hoping I worked the problem out correctly. A 10-g mass of krypton occupies 15.0 L at a pressure of 210 kPa. Find the volume of the krypton when the pressure is increased to 790 kPa. V2 = V1 x P1/P2 V2 = 15.0 L x 210 kPa/790 kPa

    asked by Amy on May 8, 2012
  95. chemistry

    a 250.0 ml sample of an aqueous solution at 25 degrees celsius contains 35.8 mg of an unknown nonelectrolyte compound. If the solution has an osmotic pressure of 11.25 mmHg, what is the molar mass of the unknown compound? I know you need to have the answer

    asked by Vic on October 1, 2012
  96. Chemistry - Science (Dr. Bob222)

    Liquid chloroform (CHCl3) is placed in a closed container and allowed to equilibrate with chloroform vapor. With the temperature held constant, additional chloroform is introduced into the system, and the vapor-liquid equilibrium is reestablished.

    asked by Ana on May 10, 2014
  97. Gen Chem

    A mixture of NaCl and sucrose (C12H22O11) of combined mass 10.2 g is dissolved in enough water to make up a 250 mL solution. The osmotic pressure of the solution is 8.29 atm at 23°C. Calculate the mass percent of NaCl in the mixture.

    asked by Brittany on February 4, 2016
  98. Miami trace

    Chemistry. AN UNKNOwn gas has a pressure of 2.0, a volume of 15.0 L and a temperature of 348 Kelvin. The sample weighs 4.20 grams. What is its molecular weight. I am trying to find formula

    asked by corey on December 1, 2015
  99. Chemistry

    Which of the solutions has the greatest osmotic pressure? Choose one answer. a. 10.0 g glucose in 1.00 L at 298 K b. 10.0 g glucose in 1.00 L at 303 K c. 10.0 g glucose in 0.500 L at 298 K d. 5.0 g glucose in 1.00 L at 298 K

    asked by CC on February 12, 2010
  100. Chem Two

    When 2.25 g of a nonelectrolyte solute is dissolved in 125 mL of water at 22 °C, the resulting solution exerts an osmotic pressure of 955 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the

    asked by Jen on July 14, 2012