osmotic pressure chemistry

64,480 results, page 34

  1. chemistry

    A flask that can withstand an internal pressure of 2488 torr, but no more, is filled with a gas at 21.0°C and 758 torr and heated. At what temperature will it burst?
  2. chemistry

    Assuming the temperature and pressure are held constant, which of the gas samples has the greatest number of gas particles? 45.0 mL O3 35.0 mL N2 15.0 mL of CO2 25.0 mL of SO3
  3. chemistry

    Assuming the temperature and pressure are held constant, which of the gas samples has the greatest number of gas particles? 45.0 mL O3 35.0 mL N2 15.0 mL of CO2 25.0 mL of SO3
  4. Chemistry

    HCONH2(g) <-> NH3(g) + CO2(g) Kc= 4.84 at 400 K2(g) If 0.186 mol of HCONH2(g) dissciates in 2.16L at 400K, what will be the total pressure at equilibrium?
  5. Chemistry

    At 122C the pressure of a sample of nitrogen gas is 0.830 atm. what will the temperature in Celsius be at 3.00 atm, assuming constant volume ?
  6. chemistry

    Assuming the temperature and pressure are held constant, which of the gas samples has the greatest number of gas particles? 45.0 mL O3 35.0 mL N2 15.0 mL of CO2 25.0 mL of SO3
  7. chemistry

    if 0.896 grams of a gas occupies a 250 ml flask at 20 degrees celcius and 760 mm hg of pressure,what is the molar mass of the gas?
  8. chemistry

    at 127 centigrade and 1 atm pressure of a gas contains 0.3mole of nitrogen molecule, 0.2 mole of oxygen molecule.the volume of the mixture is
  9. Chemistry

    If you decrease the pressure on the equilibrium mixture represented below, which direction would you expect the equilibrium to shift? C3H8(l) + 5O2(g) 4H2O(g) + 3CO2(g)
  10. chemistry

    A gas occupies 560.0 mL at 285 K. To what temperature must the gas be lowered if it is to occupy 250.0 mL? Assume that the pressure remains constant.
  11. Chemistry

    explain on a particle basis how the addition of a solute affects the boiling point, the freezing point, and the vapor pressure of the solvent.
  12. Chemistry

    If 0.896g of a gas occupies a 250mL flask at 20 degree celcius and 760 mmHg of pressure, what is the molar mass of the gas?
  13. General Chemistry

    How do the vapour pressure of two substance at the same temperature but with different strengths of the inter-molecular forces compare. Give a molecular explanation of why this is so.
  14. chemistry

    A sample of gas has a mass of 0.565g . Its volume is 120 mL at a temperature of 80∘C and a pressure of 747 mmHg . what is the molar mass
  15. Chemistry

    A sample of oxygen that occupies 1.00 x 10^6 mL at 575 mm Hg is subjected to a pressure of 1.20 atm. What will the final volume of the sample be if the temperature is held constant?
  16. chemistry

    a solution is made by mixing 38.0 ml of ethanol C2H6O, 62.0mL of water. assuming ideal behavior, what is the vapor pressure of the solution at 20 C
  17. chemistry

    A 813. mL sample of argon gas at 452. K is cooled at constant pressure until the volume becomes 356. mL. What is the new gas temperature in Kelvin?
  18. Chemistry

    when the pressure on 2.5liters of oxygen is decreased from 2.0atm to 1.0atm,the volume of the gas becomes how many liters.(round answer to one decimal place.
  19. chemistry

    A gas occupies 255 mL at 479.6 Torr and 21.0 °C. When the pressure is changed to 558.6 Torr, what temperature is needed to maintain the same volume?
  20. chemistry

    a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid
  21. chemistry

    400cm3 of nitrogen at 30degree celsius is heated at constant pressure to a temperature 50degree celcius.find the new volume of the nitrogen.
  22. chemistry

    400cm3 of nitrogen at 30degree celsius is heated at constant pressure to a temperature 50degree celcius.find the new volume of the nitrogen.
  23. Chemistry

    A flask that can withstand an internal pressure of 2500 Torr, but no more, is filled with a gas at 21.0 C and 758 Torr and heated. At what temperature will it burst?
  24. Chemistry

    when calculating stoichiometric relationships in gas reactions using the combined gas law why is it important to convert the volumes and pressure to STP?
  25. Chemistry

    If 0.896g of a gas occupies a 250mL flask at 20 degree celcius and 760 mmHg of pressure, what is the molar mass of the gas?
  26. chemistry

    How many liters of water vapor can be produced if 8.9 liters of methane has (CH4) are combusted, if all measurements are taken at the same temperature and pressure? Please answer & explain
  27. Chemistry

    A 4.05L sample of argon, initially at STP is heated to 500k. The final volume is 6.5L. Determine the final pressure in atm.
  28. Chemistry

    What volume of oxygen gas is needed for the complete combustion of 4.00 L of ethane gas, C2H6? Assume that the temperature and pressure of the reactants are the same.
  29. Chemistry

    What will be the new pressure when a volume of 21.0 L of a gas at 35.0 degrees celsius and 2.00 atm is compressed to 12.0 L and cooled to 10.0 degrees celcius with no change in the number of moles?
  30. chemistry

    2.8 g of the nonvolatile solute sucrose (C12H22O11) is added to 517 g of water at 25oC. What will be the partial pressure of the water vapor over this solution?
  31. Chemistry

    A gas occupied a volume of 3.50 L at 27 degrees celcius and 400.0 mmHg. What is the new temperature if the pressure changes to 0.789 atm and the volume is decreased to 2.50 mL
  32. chemistry

    a sample of water under study was found to boil at 102 degree celiceus at normal temperature and pressure . is the water pure
  33. Chemistry

    In the system A(g) + 2B(g)  2C(g) + 2D(g) H=21 kJ/mol, it is possible to increase the quantity of C by: a) adding a catalyst b) decreasing the [B] c) increasing the pressure d) increasing the temperature - I think it is b ? Am i right?
  34. chemistry

    a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid
  35. chemistry

    what volume should a 1.0L balloon at 25 degrees celcius and 1.00 atmosphere pressure be if immersed in liquid nitrogen (-196 degrees celsius, 1atm)?
  36. Chemistry

    As ice melts at standard pressure, its temperature remains at 0°C until it has completely melted. Its potential energy: increases decreases remains the same
  37. chemistry

    what volume should a 1.0L balloon at 25 degrees celcius and 1.00 atmosphere pressure be if immersed in liquid nitrogen (-196 degrees celsius, 1atm)?
  38. chemistry

    a 1.00g sample of water is allowed to vaporize completely in a 10.0L container. What is the pressure of the water vapor at 150 degrees celsius?
  39. Chemistry

    In the system A(g) + 2B(g) ⇔ 2C(g) + 2D(g) ΔH=21 kJ/mol, it is possible to increase the quantity of C by: a) adding a catalyst b) decreasing the [B] c) increasing the pressure d) increasing the temperature
  40. chemistry

    if 250ml of nitrogen dioxide were collected over mercury at 72 degrees celsious and under pressure 675mm of mercury, how many grams of nickel reacted?
  41. chemistry

    What happens to the concentration of SO2(g) when the total pressure on the equilibrium reaction 2 SO2(g) + O2(g) <---> 2 SO3(g) is increased (by compression)? I thought it remained the same but that was incorrect.
  42. Chemistry help

    A gas occupying 29 mL at standard conditions is heated to 14◦C while the pressure is reduced to 0.98682 atm. What is the new volume occupied by the gas?
  43. Chemistry

    At 57.7°C, the vapor pressure of CCl4 is 56.1 kPa, and its enthalpy of vaporization is 29.82 kJ/mol. Use this information to estimate the normal boiling point (in °C) for CCl4.
  44. Chemistry

    1 mol of pure Nitrogen gas at SATP condition of volume 24.8 mcube maintained at The temperature of 596.3K. what is the pressure of the gas?
  45. Chemistry

    Which of the following best applies to the pressure of a gas? A. It is the force per unit volume. B. It decreases with temperature. C. It increases with volume. D. It is the sum of the collisions of the molecules. Is it a or d.
  46. chemistry

    why does a can of soda explode in a hot car? As the temperature rises, the gas (carbon dioxide that make the fizzle in soda pop)exerts more and more pressure until the container ruptures. Any gas heated tries to expand due to greater molecular motion.If it is contained, it ...
  47. sciencee

    1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
  48. Physics

    Seawater has a density of about 1024 kg/m^3. In fresh water, the water line on a certain rectangular raft (8.8cm thick) moves 3.2 cm when a load of cargo is placed on it. How much will the same load of cargo move the water line in seawater? What is the pressure in fresh water ...
  49. Dr Bob222

    Can you help me with this please - Temp - 650 Pressure - 690mm Hg mass - 0.927g volume - 194cm3 How do I calculate the volume of the gas at a different temp? & at a different pressure? You can do this two ways. The simplest is P1V2/T1 = P2V2/T2
  50. Science

    If there's 1 gram of nitrogen (N2) at 1 L and 1 gram of hydrogen (H2) at 1 L, would the pressure of H2 be greater than the pressure of N2? And would the density of H2 = the density of N2 at these conditions? There would be more moles of H2 than N2, but the same mass and volume...
  51. algebra

    The function p(d)=1+d/33, gives the pressure, in atmospheres (atm), at a depth d in the sea (d is in feet). Note that p(0)=1 atm, p(32)=2 an so on. Find the pressure at 200 feet. Type an integer or simplified fraction.
  52. chem

    At a pressure of 2 atm, hydrogen gas occupies a volume of 8 L. What pressure must the gas be under if the volume is increased to 10 L? Don't forget the units. im confused on how to set it up and plug the numbers in?
  53. Physical Science

    Hello, I wanted to know If I came to the coreect answer. Thank You If a gas has a gage pressure of 156 kpa, its absolute pressure is approximately? My answer: 56kpa (156kpa-100kpa=56kpa)
  54. IPC

    the highest pressure ever produced in a laboratory setting was about 2000000 atm. if we have a .000010 liter sample of a gas at that pressure until it is equal to 0.275 atm, what would the new volume of that gas be?
  55. Physics

    An oxygen cylinder of volume 7 cubic metre has oxygen pressure 150 kg/cm^2. In OPEN state, the nozzle has diameter 1 cm. How much time is required for pressure to come down to 4 kg/cm^2 if nozzle is opened?
  56. bio

    You want to design a breathing machine that will bring 500 mL of air into the lungs. You begin with 100 mL of air at 2 atm of pressure. How would you change the pressure in your machine to accomplish your goal?
  57. math

    The function p(d)=1+d/33, gives the pressure, in atmospheres (atm), at a depth d in the sea? (d in in feet). Note that p(0)=1 atm, p(33)=2, and so on. Find the pressure at 40 feet (Type answer as a integer or a simplified fraction.)
  58. bio 102

    assuming the standard values for the atmospheric partial pressure of N2, O2, AND CO2 at sea level, what is the approximate total partial pressure of the remainig atmospheric gases?
  59. chem

    Using the same sample of gas (P 1 = 615torr , T 1 = 10 ∘ C ), we wish to change the pressure to 6150torr with no accompanying change in volume or amount of gas. What temperature T 2 , in Celsius, is needed to reach this pressure?
  60. chemistry

    If the solubility of gas in water is 5.0g/L when the pressure of the gas about the water is 2.0 atm, what is the pressure of the gas above the water when the solubility of the gas is 1.0 g/L?
  61. chem

    One mole of an ideal gas is sealed in a 22.4- container at a pressure of 1 and a temperature of 273 . The temperature is then increased to 305 , but the container does not expand. What will the new pressure be?
  62. physics

    A rigid tank contains 38:0 kg of O2 gas at a pressure of 9:70 atm. If the oxygen is replaced by helium, how many kilogram of helium will be needed to produce a pressure of 8:00 atm?
  63. college

    One mole of oxygen gas is at a pressure of 5.10 atm and a temperature of 32.0°C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature?
  64. science

    A rigid container holds a gas at a pressure of 55kPa and a temp of -100.0 deg C. What will the pressure be when the temp is increased to 200.0 deg C?
  65. Science

    The vapor pressure of water at 25 oC is 23.8 torr. Calculate the vapor pressure of a solution prepared by dissolving 35.0 g of urea [(NH2)2CO] in 75.0 g of water at 25 oC.
  66. chem

    a sample of gas has a volume of 500 ml at a pressure of 640torr. that volume in liters will the gas occupy at 1.00 atm pressure and constant temperature
  67. mueller

    You know that a gas in a sealed container has a pressure of 111 kPa at 23 degrees Celsius. What will the pressure be if the temperature rises to 475 degrees Celsius?
  68. Physics

    A block measuring 0.1m x 0.4m x 1.5m has a mass of 30kg. Calculate the pressure in each position and state in which position will the block produce greatest and least pressure on the ground.
  69. chemistry

    Dear Dr. Bob, Go to this website listed and you will see that this is not a take home exam. This is my professor's website and you can see his comment on the exams we took today 7/7/10. I just want to know what my score is so I can just relax. type in eee dot uci dot edu slash...
  70. oxford-chemisrty

    if the total pressure of a container filled with oxygen gas, nitrogen gas and water vapor is equal to the pressure of what ? A.oxygen only B. oxygen and nitrogen only C. water vapor only D. All 3 gasses added together Dalton's Law of Partial Pressures: The sum of the partial ...
  71. Physics

    The bulk modulus of water is B = 2.2 x 10^9 N/m2. What change in pressure Delta P (in atmospheres) is required to keep water from expanding when it is heated from 12.4 °C to 31.1 °C? I know that the equation for pressure is Delta P = Force / Area but I have no idea what I ...
  72. chem

    At what temperature will a 1.0 g sample of neon gas exert a pressure of 500 torr in a 5.0 L container ? or At what temperature will a 0.0470 mol of a gas fill a balloon to 1.20 L under 0.988 atm pressure ?
  73. Anatomy and Physiology

    Hello! ____ 23. The blood pressure in veins is __________ the blood pressure in arteries. (1 point) a) higher than b) lower than c) the same as d) not comparable to My Answer: B Could someone please verify my answer? Thanks in advance! - Da Fash
  74. Chem

    A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 8.0 atm? This is a new chapter were covering and i have no idea how to do this?
  75. physics

    Independent variable is volume, in cubic meters (m3). Dependent variable is pressure, in pascals (Pa). Data points are (0.1, 40), (0.5, 8), (1, 2), (4, 1), (5, 0.8), (8, 0.5), (10, 0.4). Following the directions above, write a mathematical expression for pressure P in terms of...
  76. chem

    A gas sample is connected to an open-end manometer. The mercury level is 25 mm lower in the side open to the atmosphere, and the atmospheric pressure is 754 torr. What is the pressure of the gas?
  77. Chemistry(Please help)

    The common laboratory solvent diethyl ether (ether) is often used to purify substances dissolved in it. The vapor pressure of diethyl ether , CH3CH2OCH2CH3, is 463.57 mm Hg at 25oC. In a laboratory experiment, students synthesized a new compound and found that when 27.18 grams...
  78. physics

    a pond of water filled with water apto 60m. 1)write formulato find the pressure of water exerted on the base of pond. 2)calculate the pressure exerted by the water on the base of pond?density of water is 1000kg/m3 3)half of the water was removed from the pond.what could be the...
  79. chemistry ap

    Why would [23.8-(.0588)(23.8)] be the proper setup to determine the vapor pressure of a solution at 25 Celsius that has 45g of C6H12O6, glucose (MM=180gxmol^-1), dissolved in 72g of H2O? The vapor pressure of pure water at 25Celsius is 23.8 torr. vp pure solvent - lowering due...
  80. College Physics

    A monatomic ideal gas is compressed adiabatically from a pressure of 1.39 105 Pa and volume of 260 L to a volume of 39.0 L. What is the new pressure of the gas?
  81. physics

    Tension is: ---------A contact-free force ---------A contact force ---------A specific form of energy ---------A pressure value corrected for the air pressure
  82. Science

    During exercise your body's blood pressure increases as it cool down the body's blood pressure slowly returns to its normal state this is know as?
  83. math

    The function,p(d)=1+d/33, gives the pressure in atmospheres(atm), at a depth d in the sea (d is in feet).Note that p(0)=1 atm, p(33)=2, and so on. Find the pressure at 120 feet.
  84. math

    The function,p(d)=1+d/33, gives the pressure in atmospheres(atm), at a depth d in the sea (d is in feet).Note that p(0)=1 atm, p(33)=2, and so on. Find the pressure at 120 feet.
  85. Physics

    At what depth beneath the surface of a lake is the absolute pressure 2 times the atmospheric pressure of 1.01 105 Pa that acts on the lake's surface?
  86. Innovation

    A car tire contains air at a pressure of 24 lb/in^2 at 0 degrees C. If the volume of the tire remains unchanged, what will the pressure be when the temperature has increased to 32 degrees C?
  87. chem

    A sample of gas has an initial volume of 32.6L at a pressure of 1.2atm.If the sample is compressed to a volume of 13.4L , what will its pressure be? (Assume constant temperature.)
  88. Chem

    A Baloon is filled with 3.00 L of helium at a pressure of 765 Torr. What is the volume of the baloon at an altitude where the atmospheric pressure is 530 torr?
  89. Algebra

    The function p(d)=1+d/33, gives the pressure in atmospheres (atm), at the depth d in the sea (d is in feet). Note that p(0)=1 atm, p(33)=2 and so on. Find the pressure at 40 feet? I am lost please help? Thanks!
  90. Physics..

    A container of gas is at a pressure of 1.3x10^5 Pa and a volume of 6.0m^3. How much work is done by the gas if it expands at constant pressure to twice its initial volume? Please help me I really don't know what to do,,,
  91. chem

    At a pressure of 2 atm, hydrogen gas occupies a volume of 8 L. What pressure must the gas be under if the volume is increased to 10 L? Don't forget the units.
  92. physical biochemistry

    One mole of an ideal monatomic gas initially at 300 K is expanded from an initial pressure of 10 atm to a final pressure of 1 atm. Calculate ��E, q, w, ��H, and the final temperature T2 for this expansion carried out according to each of the ...
  93. Chemistry

    I'm working on a problem that says: A 4.00 gram sample of a mixture of CaO and BaO is placed in a 1.00 L vessel containing Co2 at a pressure of 730 torr and a temperature of 25C. The CO2 reacts with the CaO and BaO forming CaCO3 and BaCO3. When the reaction is complete, the ...
  94. Physics

    a quarter sits at the bottom of a wishing well where the gauge pressure reads 294 kPa. If the quarter has a diameter of 24mm, what is the total force acting on the top surface of the quarter? Note: Atmospheric pressure = 101.3
  95. PHYSICS!!!

    A straight horizontal pipe with a diameter of 1.0 cm and a length of 46 m carries oil with a coefficient of viscosity of 0.11 N · s/m2. At the output of the pipe, the flow rate is 8.4 10-5 m3/s and the pressure is 1.0 atmosphere. Find the gauge pressure at the pipe input. ...
  96. Physics

    Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 7.6% and the body increases blood pressure to maintain a constant flow. Calculate the needed percent increase in pressure.
  97. Chem/math question - from Sam

    For the following reaction at 600. K, the equilibrium constant, Kp, is 11.5. PCl5(g) = PCl3(g) + Cl2(g) Suppose that 2.510 g of PCl5 is placed in an evacuated 470. mL bulb, which is then heated to 600. K. (a) What would be the pressure of PCl5 if it did not dissociate? ___atm...
  98. CHEM

    CaCO3 can be roasted to produce CaO ans CO2 this reaction is carried out in flask connected to an open end Mercury manometer the atmospheric presure in 762tor if the pressure of the CO2 produced is 0.254 determine the total pressure
  99. chemistry

    Heterogenous equilibrium of ammonium bisulfide. Ammonium bisulfide NH4HS forms ammonia NH3 and hydrogen sulfide H2S through the reaction NH4HS(s) arrows + H2S(g). This reaction has a kp value of 0.120 at 25 C. A 5.0-L flask is charged with .400g of pure H2S(g) at 25 C. ...
  100. physics

    Define STPD, ATPD, BTPS and list the values. I'm in college and our books haven't came in from the bookstore. I don't understand how the prof. is still making us do this HW. my younger brother told me I should try to get help from this site since it helped him. This is all I ...
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