osmotic pressure chemistry

64,622 results, page 10
  1. chemistry

    If four grams of Oxygen and four grams of Helium are placed in a five liter vessel at 338 K, what will be the partial pressure of each gas and the total pressure in the vessel?
  2. Chemistry

    When a sample of neon with a volume of 683 mL and a pressure of 0.792 atm was heated from 19.0 to 76.0 °C, its volume became 733 mL. What was its final pressure (in atm)?
  3. chemistry

    At a pressure of 405 kPa, the volume of a gas is 6.00 cm3. Assuming the temperature remains constant, at what pressure will the new volume be 4.00 cm3?
  4. chemistry

    A balloon is filled with 2.2 cm3 helium gas at 132.4 atm pressure. What will be the new pressure (atm) if the volume is changed to 68.6 cm3?
  5. chemistry

    Consider the reaction 2 NO2 (g) ⇌ 2 NO (g) + O2 (g). If the initial partial pressure of NO2 (g) is 3.0 bar, and x is the equilibrium pressure of O2 (g), what is the correct equilibrium relation?
  6. chemistry

    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.
  7. chemistry

    80g of NaCl are dissolved in 400g H2O. if the vapor pressure of the water is 40 mmHg , what is the vapor pressure of NaCl above the solution?
  8. Chem

    An aqueous solution containing 21.6 mg of Vasopressin in 100 mL solution produces Osmotic Pressure of 3.70 mmHg at 25°C. Calculate the Molecular Mass of Vasopressin. Here's what I started working on, but then I got stuck. 21.6 mg = 0.0216 g v = 100 mL =
  9. Chemistry

    Three gases (8.00 of methane,CH4 , 18.0 of ethane,C2H6 , and an unknown amount of propane,C3H8 ) were added to the same 10.0-L container. At 23.0 degress celsius , the total pressure in the container is 3.90 atm. Calculate the partial pressure of each gas
  10. Physical Chemistry

    Let's say we are given 1.0 mol of an ideal gas, and we are given a starting temperature, and and initial pressure the gas exerts. We are now told that the gas expands adiabatically until it reaches some other pressure, p2. How do we calculate w and dH for
  11. Chemistry

    Using the information on the table of van der Waals Constants of Some Common gases, calculate the pressure exerted by 4.37 moles of chlorine gas confined in a volume of 2.45 L at 38 degrees Celsius. Compare the pressure with that calculated using the ideal
  12. Chemistry

    Using the information on the table of van der Waals Constants of Some Common gases, calculate the pressure exerted by 4.37 moles of chlorine gas confined in a volume of 2.45 L at 38 degrees Celsius. Compare the pressure with that calculated using the ideal
  13. Chemistry

    Using the information on the table of van der Waals Constants of Some Common gases, calculate the pressure exerted by 4.37 moles of chlorine gas confined in a volume of 2.45 L at 38 degrees Celsius. Compare the pressure with that calculated using the ideal
  14. DEsperate to undertsand-Chemistry

    The pressure of gas is measured at 550 mm Hg. Calculate the pressure in a. Torr b. lb/in2 c. atm d. in Hg How do I set up these conversions to get the [prper calcu;ations...step by step? This is the 3rd time zzzzzzzIve posted this question and I need to
  15. Chemistry,

    I reall need help, i know what formulas to use i just don't know how to do it. Can some one please work with me to get to the correct answer? 1.The air in a dry, sealed 2L soda bottle has a pressure of 0.998 atm at sea level at a temperature of 34C. what
  16. chemistry

    The vapor pressure of water at 80 degrees c is 355mmHg. A 100cm3 vessel contained wateraturated oxygen at 80 degrees c., the total gas pressure being 760 mmHg. The contents of the vessel were transferred by pumping to a 50cm3 vessel at the same
  17. chemistry

    Two moles of an ideal gas initially at 27C and 1 atm pressure are compressed isothermally and reversibly till the final pressure of the gas is 10 atm. Calculate the work done. (R=8.314 JK-1mol-1)
  18. Chemistry, Vapor Pressure

    Select the pair of substances in which the one with the higher vapor pressure at a given temperature is listed first. 1. C7H16, C5H12 2. CCl4, CBr4 3. H2O, H2S 4. CH3CH2OH, CH3-O-CH3 5. Xe, Kr
  19. Chemistry

    The oxygen gas emitted from an aquatic plant during photosynthesis is collected over water at a temperature of 25 degrees Celcius and a total pressure of 752 torr. What is the partial pressure of the oxygen gas?
  20. AP Chemistry

    Each increase in pressure of 100 atm decreases the melting point of water by 1.0 degrees C. Estimate the temperature at which liquid water freezes under a pressure of 400 atm. How do I approach this problem?
  21. Chemistry

    At sea level we are under 15.8 pounds of pressure per square inch of our body. This is the equivalent of a 16 pound bowling ball at every inch of our body. Describe why we are not overcome by the pressure of the atmosphere? What experiment in our course
  22. biology

    What must the systolic blood pressure be valued at for adequate mean arterial pressure if the diastolic pressure is 75? (Assume resting conditions) A. at least 90 B. at least 95 C. at least 100 D. at least 105 E. at least 110 F. at least 115 G. at least
  23. Physics

    2. On the inside of an airplane the air pressure is about 85% of the atmospheric pressure at sea-level while outside, when it is cruising, the pressure is about 25% of the sealevel atmospheric pressure. If a window is 0.46 m in diameter, what is the net
  24. science

    As you airplane taker off from an airstrip on the ground and rises 30,000 feet into the sky what happens to the air pressure on the outside of the airplane ? Answers are Air pressure decreases Air pressure increases Air pressure stays same more information
  25. precalculus

    The earth's atmospheric pressure, P, in terms of height above sea level is often modeled by an exponential decay function. The pressure at sea level is 1013 millibars and the pressure decreases by 14% for every kilometer above sea level. (a) What is the
  26. chemistry kinetics

    The reaction SO2Cl2(g) → SO2(g) + Cl2(g) is a first order reaction carried out at constant volume at 600 K whose t1/2 is 4.1 hr. The initial pressure of SO2Cl2 is 1.25 atm. What will be the total pressure of the system after 1 hour?
  27. Chemistry...

    The oxygen gas emitted from an aquatic plant during photosynthesis is collected over water at a temperature of 25 degrees celsius and a total pressure of 762 torr. What is the partial pressure of the oxygen gas? What formula do I need to use?
  28. chemistry

    What is the effect of the following on the separation of the mixture(hexane and toluene)? a. A soluble, nonvolatile impurity b. a decrease in barometric pressure c. an increase in barometric pressure d. rapid heating rate separation technique is
  29. Chemistry

    A Gaseous mixture contains 4.08g of oxygen and 2.78g of Nitrogen a)What pressure is exerted by the mixture inside a 100.0ml metal container at 150C. b) what pressure is contributed by the oxygen? (please show steps)
  30. Chemistry

    I need help calculating the partial pressure of H2 using the following information 0.028 g Mg with excess HCl which produced 31.0 mL of H2 gas. The gas was collected by water displacement in a 22 degrees Celsius water bath. The pressure was 746 mmHg.
  31. Gem=neral Chemistry 106

    A gas occupying a volume of 806 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
  32. Chemistry

    SHOW WORK A cylinder contains 36.5g of argon gas at a pressure of 8.20atm. The valve is opened and gas is allowed to escape until the pressure is reduced to 4.75atm at constant temperature. How many grams of argon escaped?
  33. chemistry

    How will the following system at equilibrium shift in each of the following cases? 2 SO3(g) <--> 2 SO2(g) + O2(g) H° = 197 kJ (a) SO2(g) is added (b) the pressure is decreased by increasing the volume of the container (c) the pressure is increased
  34. chemistry

    when 2g of a gas A is introduced into an evacuated flask kept at 25 centigrade, the pressure is found to be 1 atmosphere.if 3g of another gas is then added to the same flask, the total pressure becomes 1.5atm. assuming ideal behaviour, the ratio of their
  35. chemistry

    1.Vapor pressure is the pressure exerted by a vapor when condensation A. < B. = C. > evaporation over its liquid in a closed system. 2.Evaporation is an A. endothermic B. exothermic process, because when a substance evaporates it must A. absorb B.
  36. Chemistry

    A gas mixture contains 4.00 grams of O2 and 4.00 grams of He. If the total pressure of the gas sample is 4.67 atm, what is the partial pressure of each component?
  37. chemistry

    what is the partial pressure of 02 collected over water at 25 degree C and 630 torr (vapor pressure of H20 at 25 degree C is 23.8 torr)
  38. chemistry

    The vapor pressure of pure water at 25 degrees Celsius is 23.77 mm Hg. What is the vapor pressure, in mm Hg, of water above a solution that is 1.5m glucose, C6H12O6?
  39. Chemistry

    A gas sample has an initial volume of 4.5 liters at a pressure of 731 mmHg. If the volume is increased to 8.9 liters, what is the pressure?
  40. chemistry

    A tank volume of 40 liters containing 2.5 kg of oxygen gas at a pressure of 10 atm . How much air should be included in the tank so that the pressure to 15 atm ?
  41. chemistry

    A gas mixture contains 75.2% nitrogen and 24.8% krypton by mass. What is the partial pressure of krypton in the mixture if the total pressure is 853mmHg ?
  42. CHEMISTRY

    At what temperature does a 16.3 g of nitrogen gas have a pressure of 1.25 atm in a 25.0-L tank? Plz show me step by step how to do this, with using pressure as atm.
  43. CHEM!

    A gas mixture contains 0.60 mol of N2, 0.10 mol of H2, 0.20 mol of CH4. Calculate the pressure of the gas mixture and the partial pressure of each constituent gas if the mixture is in a 6.0 L vessel at 27C. What is the: Total pressure Pressure of H2
  44. Chemistry

    Samples of Neon and helium are placed in separate containers connected by a pinched rubber tube. There is 5.00 liters of neon at a pressure of 634 mm Hg in the first container. The second container has 3.00 liters of helium at 522 mm Hg. When the clamp is
  45. science

    Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would
  46. chemistry

    A sample of argon has a volume of 735 mL at a pressure of 1.20 atm and a temperature of 385 K. What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 15.4 atm and 2580C? This problem involves changes
  47. chemistry

    a 500ml sample of o2 gas at 24 degrees celsius was prepared by decomposing a 3% aqueous solution of hydrogen peroxide, in this presence of a small amount of manganese catalyst by the reaction 2H2O2>2H2O+O2. The oxygen thus prepared was collected by
  48. CHEMISTRY

    after starting with 0.343g Al and excess HCl the volume of H2 gas collected over water was 472ml. the atmospheric pressure was 754 mmHg and the temp was 21c. 1 balanced chemical equation? 2calculate the pressure in atm of dry hydrogen gas in a mixture
  49. Precalc Repost

    Hello, I'm trying to figure out how to do this problem, but don't know where to begin. I think some information is missing. Blood Pressure: The function P=120+30Sin 2pi(t) models the blood pressure (in millimeters of mercury) for a person who has a high
  50. pre-calc

    Hello, I'm trying to figure out how to do this problem, but don't know where to begin. I think some information is missing. Blood Pressure: The function P=120+30Sin 2pi(t) models the blood pressure (in millimeters of mercury) for a person who has a high
  51. vapor pressure

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 450C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at
  52. Chemistry

    If the equilibrium constant K equals .05, and the reaction C3H8=C3H6 + H2 (all gases), starts with pure C3H8 and is allowed to reach equilibrium at 200 K at a total pressure of 2 bar. Calculate the partial pressure of H2 at equilbirum.
  53. chemistry

    A 10.0 g sample of carbon monoxide, a poisonous gas produced by the incomplete combustion of hyrdocarbons, occupies 15.0 l at a pressure of 200 kpa. the volume occupied by the carbon monoxide when the pressure is increased is 700 pka is a) 1.16 L b)4.05 L
  54. chemistry

    Glycerin, C3H8O3, is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 164 g of glycerin to 325 mL of H2O at 39.8°C? The vapor pressure of pure water at 39.8°C is 54.74 torr and its density is 0.992 g/cm3.
  55. Chemistry

    Could someone please help guide me through this question: A 1.047 g sample of He(g) is found to occupy a volume of 8.446 L when collected over hexane at 25.0 ∘C and 739.6 mmHg barometric pressure. Use these data to determine the vapor pressure of
  56. Chemistry

    find the dry volume at STP of 500 mL of nitrogen gas measured over water at 15 degree C and 680 mmHg. the water vapor exerts a partial pressure of 12.8 torr at this temperature ( vapor pressure).
  57. chemistry

    Glycerin (C3H8O3) is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 180. g of glycerin to 321 mL of H2O at 39.8°C? The vapor pressure of pure water at 39.8°C is 54.74 torr and its density is 0.992 g/cm3.
  58. chemistry

    A 10.0 g sample of carbon monoxide, a poisonous gas produced by the incomplete combustion of hyrdocarbons, occupies 15.0 l at a pressure of 200 kpa. the volume occupied by the carbon monoxide when the pressure is increased is 700 pka is a) 1.16 L b)4.05 L
  59. Chemistry

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.6 L of water upon warming from 25 C to 50 C. Assume that the water is initially saturated with nitrogen and oxygen gas at
  60. Chemistry II (College)

    How would I go about solving this problem? Can someone show me an equation that can be used? The decomposition of dimethyl ether at 504°C is a first-order reaction with a half-life of 27 min. (CH3)2O(g) CH4(g) + H2(g) + CO(g) (a) What will be the partial
  61. chemistry

    Nitroglycerine decomposes according the the equation: 4C3H5(NO3)3 -> 12 CO2 + 10 H2O +6N2 + O2. 15.0 g of nitroglycerine is placed in a 500 ml flask at 25.0 C. The vapor pressure of water at this temperature is 23.8 mmhg. Find the total pressure in the
  62. Chemistry

    A gas sample containing only SO2, PF3 and SF6 has the following mass percent composition: 30.4% SO2 and 28.4% PF3. Calculate the partial pressure (atm) of SO2 if the total pressure of the sample is 676.4 torr. I tried taking the total pressure in atm and
  63. Chemistry

    A 355.0 mL cylinder containing SO3 at a pressure of 0.700 atm is connected by a valve to 0.559 L cylinder containing COCl2 at 380.0 torr pressure. Calculate the partial pressure (atm) of SO3 when the valve is opened. Unit conversion K = C + 273 1 atm = 760
  64. Physics

    A horizontal pipe narrows from a diameter of 10 to 5 cm. For an incompressible fluid flowing from the larger diameter to the smaller: Question 5 options: 1.the velocity and pressure both increase. 2.the velocity increases and the pressure decreases. 3.the
  65. Chemistry

    Which of the following indicates the exsistence of stron intermolecular forces of attraction in a liquid? a very low boiling point a very low vapor pressure a very low critical pressure a very low viscosity a very low heat of vaporization
  66. chemistry

    So the question I have is: Calculate the pressure of dry hydrogen collected. (Use the water temperature). And the evidence that we obtained was: Length of magnesium 3.8Cm Mass of 1 m of magnesium 1.254g Volume of hydrogen collected 67mL Air temperature 27C
  67. chemistry

    At 25ºC and 1 atmosphere the following equilibrium is eatablished : 2NO (g) <=> N2O4 (g) The partial equilibrium pressure of N2O4 is 0.7 atm. A) calculate Kp of the above system at 25ºC. B) calculate the partial pressure of the above two gases at
  68. College Chemistry

    A sample of octane in equilibrium with its vapor in a closed 1.0 L container has a vapor pressure of 50 torr at 45oC. The container’s volume is increased to 2.0 L at constant temperature and equilibrium is re-established. What is the vapor pressure? The
  69. Chemistry

    A system at equilibrium contains I2(g) at a pressure of 0.23 atm and I(g) at a pressure of 0.24 atm. The system is then compressed to half its volume. Find the pressure of I2 when the system returns to equilibrium. Find the pressure of I when the system
  70. Chemistry

    Consider a mixture of two gases,A and B, confined in accosted vessel. A quantity of a third gas C, is added to the same vas sekar the same temperature. How does the addition of gas C affect the following: a. The partial pressure of gas A. b. The total
  71. Chemistry

    Hey i have an idea how to do this but am not sure could you please help and show work. 12 moles of a gas sample at an initial temperature of 12 degrees celcius at a pressure of 200 Pa is allowed to expand isothermally and reversibly against a pressure of
  72. Chemistry

    Raoult's Law and Ionic or Organic Solutions At 55.0 C, what is the vapor pressure of a solution prepared by dissolving 62.8 g of LiF in 247 g of water? The vapor pressure of water at 55.0 C is 118 mmHg. Assume complete dissociation of the solute.
  73. Chemistry

    Assuming that Raoults law is followed what would be the vapour pressure of a solution formed when 40g of sugar (molecular mass 342g) is dissolved in 360ml of water at 25oC? At 250C,the vapour pressure of water is 20mm and the density is 1g/ml.
  74. chemistry

    if a car tire has a pressure of 320 kPa at 25 degrees celsius, what will the pressure be when the tempertature is 55 degrees celsius?
  75. chemistry

    At a certain Pressure and Temperature one liter of CO2 weigh's 1.95g. What is the mass of one liter of C4H10 at the same temperature and pressure
  76. chemistry

    The pressure inside a hydrogen-filled container was 2.10 atm at 21 C . What would the pressure be if the container was heated to 86 C? Pfinal = ?? atm
  77. Chemistry

    A tank holds equal amounts of 4 different gases (H2, He, O2, N2) at a pressure of 896 mm Hg. The tank contains 2.00 L. What is the individual pressure of each of these 4 gases?
  78. Chemistry

    The pressure of a gas is 35 atmospheres at a temperature of 48 (degrees) C with constant volume. What will the new pressure be if the temperature is increased to 36 (degrees) C?
  79. college chemistry

    A sample of gas has an initial volume of 5.9L at a pressure of 759mmHg. If the volume of the gas is increased to 8.4L , what will the pressure be?
  80. Chemistry

    What is the pressure (in mmHg) of the gas inside the apparatus below if the atmospheric pressure is Patm=748 mmHg, h1=40 mmHg, and h2=67 mmHg?
  81. Chemistry

    What is the pressure (in mmHg) of the gas inside the apparatus below if the atmospheric pressure is Patm=748 mmHg, h1=40 mmHg, and h2=67 mmHg?
  82. Chemistry

    A rigid container of O2 has a pressure of 3.5 atm at a temperature of 713 K. What temperature would be needed to achieve a pressure of 6.0 atm?
  83. Chemistry

    Consider an ideal gas encloesd in a 1.00 L container at an internal pressure of 10.0 atm. Calculate the work, w, if the gas expands against a constant external pressure of 1.00 atm to a final volume of 20.0 L. w = ____ J now calculate the work done if this
  84. Chemistry

    CH4 (g)+ H2O (g) --->/<---- 3H2 + CO Use Le Chateliers Principle to explain what will happen to the number of moles of hydrogen at equilibrium when a) CO is removed b) Water Vapor is removed c) Methane is added d) CO is added e) Pressure is increased
  85. Chemistry

    CH4 (g)+ H2O (g) --->/<---- 3H2 + CO Use Le Chateliers Principle to explain what will happen to the number of moles of hydrogen at equilibrium when a) CO is removed b) Water Vapor is removed c) Methane is added d) CO is added e) Pressure is increased
  86. Chemistry- partial pressures

    A sample of gas collected over water at 42 degrees C occupies a volume of one liter. The wet gas has a pressure of .986 atm. The gas is dried and the dry gas occupies 1.04 L with a pressure of 1.00 atm at 90 degrees C. Using this information, calculate the
  87. ap chemistry

    a solution of CH4N2O in water has a vapor pressure of 19.6 torr. at 25C. what is the mole fraction of CH4N2O in this solution? HELP ME WATER PURE PRESSURE (P0) IS 23.8 TORR VAPOR PRESSURE IS 19.6 TORR DON'T KNOW HOW TO SOLVE IT ? P(SOLUTION)= X (CH4N2O)
  88. Barometric Pressure

    I have been studying the reduction in barometric pressure and temperature with height and am happy with my findings ref temperature. With regard to pressure I read that for every increase in altitude of 32 feet the pressure drops 1 mb. For every increase
  89. thermal physics

    An automobile tire has a volume of 1.60 x 10-2 m3 and contains air at a gauge pressure (pressure above atmospheric pressure) of 167 kPa when the temperature is 0.00°C. What is the gauge pressure (in kPa) of the air in the tires when its temperature rises
  90. science

    Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would
  91. chemistry 106

    Dry air near sea level has the following composition by volume: N2, 78.08 percent; O2, 20.94 percent; Ar, 0.93 percent; CO2, 0.05 percent. The atmospheric pressure is 1.00 atm. (Hint: Since volume is proportional to the number of moles present, mole
  92. health

    What is atmospheric pressure? A. Pressure of the air inside the body B. Pressure of the air outside the body C. Pressure of the air within one’s mouth D. Pressure of the air within one’s lungs i think its D
  93. science - chemistry

    Some heat is supplied to a mixture of ice and liquid water in a closed container and the contents of the container are thoroughly mixed. If, after the addition of heat, both ice and liquid water remain: A) the temperature of the system will increase B) the
  94. chemistry gas laws

    In a science demonstration, 4 to 6 plastic garbage bags are arranged under a 2 m by 2 m piece of plywood. A volunteer stands on the plywood and others blow into the bags to "levitate" the volunteer. If four bags are used and a 140 lb person is on the
  95. Physical Chemistry - please help!

    Question: 0.19 litre of an ideal monatomic gas (Cv,m = 3R/2) initially at 83 °C and 47 atm pressure undergo an expansion against a constant external pressure of 1.19 atm, and do 2.3 kJ of work. The final pressure of the gas is 1.19 atm. Calculate the
  96. Chemistry

    A XX-g sample of methane, CH4, is mixed with YY atm of O2 (an excess) in a VV L combustion chamber at 125.0°C. The combustion reaction to CO2 and H2O is initiated and the vessel is cooled back to 125.0°C. What is the final pressure in the combustion
  97. Chemistry

    How would I graph this: (I don't understand the whole with [1/volume] (units=1/mL) on the X-axis ) According to Boyle's Law, pressure is inversely proportional to volume, so prepare a graph of the data, with [1/volume] (units=1/mL) on the X-axis and
  98. Chemistry!

    Liquid A has vapor pressure X, and liquid B has vapor pressure Y. What is the mole fraction of the liquid mixture if the vapor above the solution is 30% A by moles? 50% A? 80% A? (calculate in terms of x and y) I'm a little bit confused because I thought
  99. Chemistry

    A car tyre has a volume of 10 L when inflated. The tyre is inflated to a pressure of 3 atm at 17°C with air. Due to driving, the temperature of the tyre increases to 47°C. a) what would be the pressure at this temperature? b) how many litres of air
  100. Chemistry

    A mixture of 1.39 g H2 and 1.60 g He is placed in a 1.00-L container at 27°C. Calculate the partial pressure of each gas and the total pressure. PH2 = ? atm PHe = ? atm Ptotal = ? atm Please put answer so i can compare to my answer