osmotic pressure chemistry

64,480 results, page 24

  1. chemistry

    What is the pressure of sulfur hexafluoride gas in a 10.0 liter tank which holds 235 g of the has at 17C?
  2. Chemistry

    Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen iodide are produced from 155 of ?
  3. chemistry

    What was Le Chatelier’s principle, in The effect on the equilibrium yield of nitric oxide of increasing the pressure?
  4. chemistry

    A balloon at 32 °C is filled with 21 L of air. What would its volume be at a temperature of 52 °C, assuming pressure remains constant?
  5. Chemistry

    Use Henry's law to determine the molar solubility of helium at a pressure of 1.5 atm and 25deg C.
  6. chemistry

    how di i use PV=nRT for: How many moles of oxygen gas (O2) are in 448L at STP (273K and 1 atm of pressure)? need help!
  7. Chemistry

    Which of the following compounds has the highest vapor pressure at 25°C? A. CH3CH2OH B. CH3OCH3 C. CH3CH2CH2Cl D. CH3CH2CH3 E. CH3CH2CH2CH
  8. Chemistry

    What is the molecular weight of a gas if a 21.0g sample has a pressure of 836mm Hg at 25.0 degrees C in a 2.00L flash?
  9. chemistry

    2.) An ideal gas in a 6.30L container at 3.50 atm and at 273K is heated to 435.0K. What is the new pressure?
  10. Chemistry

    How many moles of a gas at 100 degrees celciuos does it take to fill a 1.00 flask to a pressure of 1.50 atm?
  11. Chemistry

    Use Henry's law to determine the molar solubility of helium at a pressure of 1.5 atm and 25deg C.
  12. Chemistry

    A rigid cylinder with a moveable piston contains 50.0 liters of a gas at 30c with a pressure at 1.00atm
  13. Chemistry

    Estimate the pressure when the barometric height is 650mm Hg. Pls explain how 2estimate if its not basic
  14. chemistry

    if oxygen is removed from a sample of airas iron rusts , what happens to the total pressure of the air ?
  15. Chemistry

    a 700 mL flask contans 0.500 moles of O2 at 25. degrees celcius what is the pressure in atmosphers.
  16. chemistry

    If 1.50mol of oxygen gas exerts a pressure of 1500mmHg at 20∘C, what is the volume in liters?
  17. Chemistry

    Rank the following in order of increasing vapor pressure at 298 k: CH3CH2OH, CH3OCH3, CH3CH2CH3.
  18. chemistry

    The Henry's law constant for CO2 is 3.1 x 10-2 mol/L-atm at 25°C. What pressure would be necessary in order to have a .25 M solution?
  19. chemistry

    At 22 degrees Celsius and 729 torr pressure, what will be the volume of 75 mol of NH3 gas?
  20. Chemistry

    What is the total vapor pressure of NaCl solution at 25C with mole fraction of 0.01? (X_NaCl = 0.01) Thanks!!
  21. Physical Chemistry

    Show that, for a transition between 2 incompressible solid phases, that deta G is indepentent of the pressure.
  22. Chemistry

    A gas fills 80ml at 740mm. what volume will it have at standard pressure? Stuck on this problem. Please Help. Thanks
  23. chemistry grade 11

    which of the following has lowest vapour pressure ? 1 water 2 bromine 3 ethyl alcohol 4 ether
  24. Chemistry II

    what is the molar mass of a gaseous organic compound with a density of 3.38 g/L at 40oC and a pressure of 1.97 atm?
  25. chemistry

    How to Convert 1 ton Of Steam (Pressure 24Kg/cm2) and ( Temperature 320 C) to K Mol?
  26. Chemistry

    This same substance is a gas with a density of 1.25 g/L at 127o C and a pressure of 400 torr. What is its molar mass ?
  27. Chemistry

    How many grams of CaH2 are needed to generate 54.5L of gas if the pressure of is 815 torr at 20C?
  28. chemistry

    What is the volume, in L, occupied by 1.20 moles of C2H6 gas at a temperature of 125oC and at a pressure of 1.55 atm?
  29. chemistry

    what volume will53ml of gas measured at 25degree and 97 k pa become if the temperature is changed to 55 degree and pressure to 93 k pa ?
  30. chemistry

    determine the pressure that must be excreted on 200 grams of oxygen to contain it in a 2.oo l vessel at 30 degrees celcius
  31. Chemistry

    Hydrogen is a solid at low temperature and elevated pressure. Do you expect it to be a metal or an insulator?
  32. Chemistry

    Compare the rate of effusion of carbon dioxide with that if hydrogen chloride at the same temperature and pressure.
  33. Chemistry

    a. How many moles of N2 are present in a 1.00 qt flask that has a pressure of 425 torr at a temperature of 35°C? What is the mass in this na2?
  34. chemistry

    How many moles of gas does it take to occupy 120 L at a pressure of 233 kPa and a temperature of 340 K?
  35. chemistry

    What is the ÄH°vap of a liquid that has a vapor pressure of 641 torr at 81.7°C and a boiling point of 91.1°C at 1 atm?
  36. Chemistry B

    Determine the pressure inside a televison picture tube with a volume of 3.5L that contains 2.00 x 10-5g of nitrogen gas at 22.0C?
  37. chemistry

    equal moles of ethane and hydrogen are mixed in container at 25 c what will be the pressure exerted by hydreogen?
  38. chemistry

    calculate number of dichlorine molecules in a 5.00ml container at 40 degrees Celsius and a pressure of 2.14 x 10^4 Pa.
  39. Chemistry

    Find pressure exerted by 2.0g of helium enclosed in a 100.0 ml container at 25 degrees Celsius
  40. Chemistry

    Find temperature of 20.0g of nitrogen that occupies volume of 500.0ml at pressure 0.45 bar.
  41. chemistry

    If 2500 ml container is filled with 175 grams of argon at -48 degrees celsius, what is the pressure?
  42. chemistry

    what would the pressure of H2 gas collected in lab over water at 20.0 degrees celcius and 767 torr?
  43. chemistry

    How many moles of argon gas are present in 70L of volume with a pressure of 180atm at 21C?
  44. Chemistry

    What volume a sample of 67.0 grams of nitrogen gas (N2)will occupy at -25degrees C and 3 atm pressure?
  45. chemistry

    calculate the pressure when 57 g of flourine at 55 degrees celsius is confined to a 152 liter container.
  46. Chemistry

    What volume would be occupied by 100 g of oxygen gas at a pressure of 1.50 atm and a temp of 25 degrees C.
  47. chemistry

    How many moles of argon gas are present in 70L of volume with a pressure of 180atm at 21C?
  48. chemistry

    Calculate the volume occuiped by 7g of nitrogen gas at 27degree centigrade and 750 mm of Hg pressure?
  49. Chemistry

    Calculate the amount of heat transferred when 21.0 of CH3OH(g) is decomposed by this reaction at constant pressure.
  50. Chemistry

    What is the temperature of 0.45mol of gas at a pressure of 1.0at and a volume of 10.1L ? if anyone can tell me what i need to do to solve this problem it would be helpful
  51. chemistry

    120 ml of oxygen is collected at 27degrees C and 740 torr pressure.What is the volume at STP?
  52. chemistry

    To what temperature must a given mass of oxygen at 0degree celcius be heated so that both its volume and pressure will be doubted?
  53. chemistry

    To what a temperature must be given mass of oxygen at 0degree celcius be heated so that both its volume and pressure will be doubted?
  54. chemistry

    How many moles of argon gas are present in 70l of volume with a pressure of 280atm at 21c?
  55. Chemistry

    How many moles of air are there in flask with a volume of 125mL if the pressure is 745 mm Hg and the temperature is 22 celcius ?
  56. chemistry

    A gas cylinder of volume 5.00 L contains 1.00 g of Ar and 0.500 g of Ne. The temperature is 275 K. Find the partial pressure of Ne.
  57. Chemistry

    how do i calculate the temperature in Celsius of a 3.50L,0.75 mole sample of ammonia at 1.0 atm of pressure
  58. Chemistry

    A gas mixture contains 1.16 g N2 and 0.89 g O2 in a 1.49 L container at 16 degrees C. What is partial pressure of N2 & O2? *I already know the mole fraction for N2 is 0.60, and 0.40 for O2. I just don't know where to go from here.
  59. chemistry

    A sample of oxygen occupies 38.9L at STP. What will the pressure need to be in Torr. if the volume is to be changed to 32.2L without a change in T.
  60. chemistry

    How many moles of argon gas are present in 70L of volume with a pressure of 180atm at 21c?
  61. Chemistry

    When the pressure exerted on 1.0L of an ideal gas is quadrupled, and the kelvin temperature is tripled,what does the volume become?
  62. Chemistry

    How many moles of air must be pumped into a 4.8 L tire to give it the pressure of 47.1 psi at 25°C ? I'm not sure how to even start doing this problem.
  63. Physical chemistry

    Calculate the pressure exerted by 1.0 mol C2H6 behaving as a perfect gas
  64. chemistry

    The following reaction is at equilibrium at a pressure of 1 atm, in a closed container. NaOH(s) + CO2(g) NaHCO3(s); ΔH°rxn < 0 Which, if any, of the following actions will decrease the concentration of CO2 gas present at equilibrium? A. lowering the temperature B. ...
  65. Chemistry

    Explain the following observations using chem principles: When table salt and sugar are dissolved in water, it is observed that: 1. Both solutions have a higher boiling point than pure water. 2. the boiling point of .1 M NaCl solution is higher than that of .1 M C12H22O11 ...
  66. Chemistry

    You have two sealed jars of water at the same temperature. In the first jar there is a large amount of water. In the second jar there is a small amount of water. how does the vapor pressure of water in the first jar compares with the vapor pressure of water in the second jar.
  67. Chemistry help please

    You have two sealed jars of water at the same temperature. In the first jar there is a large amount of water. In the second jar there is a small amount of water. how the vapor pressure of water in the first jar compares with the vapor pressure of water in the second jar.
  68. physics

    Many of you may have noticed the phenomenon that basketballs get flat if the weather is cold. If a basketball was inflated to a gauge pressure of 60,000 Pa when the temperature outside was 20∘C, what is the gauge pressure inside the basketball in Pa when the ...
  69. Chemistry: Raoult's Law

    If 0.380 mol of a nonvolatile nonelectrolyte are dissolved in 3.00 mol of water, what is the vapor pressure P(H2O) of the resulting solution? The vapor pressure of pure water is 23.8 torr at 25 C. I got this answer correct: 21.1 torr A solution is composed of 1.50mol ...
  70. Chemistry

    Death Valley in California is 86 m below sea level. Will the partial pressure of oxygen in Death Valley be the same, lower or higher than the partial pressure of oxygen at sea level? A. higher B. impossible to tell without additional information C. the same
  71. Chemistry 105

    A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123 mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas...
  72. chem

    Yesterday, Jason had a sample of helium indoors (T = 23oC) in a sealed container, with a pressure of 760 mm Hg. He got bored and took the container outside, where the temperature was a blistering 35oC. He calculated the new pressure to be 750 mm Hg. Jason knew that this answer...
  73. college chemistry

    .361 g of a non-volatile solute is dissolved in 160.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 90 oC the vapour pressure of the solution is 5.1701×102 torr. (The ...
  74. Grammar

    Pressure was applied. 1. This is a fragment that can be fixed by adding a subject before pressure. 2. this is a fragment that can be fixed by adding a verb after pressure. 3. This is a fragment that can be fixed by adding both a subject and a verb. 4. This is a fragment that ...
  75. Statistic

    In a population of over 15,000 patients, the distribution of systolic blood pressure follows the normal curve. Investigators believe the average systolic blood pressure in the population is 120 mm. The investigators take a simple random sample of 6 patients from this ...
  76. chemistry

    Most natural gas consists of about 90% methane, CH4. Assume that the solubility of natural gas at 20 C and 1 atm gas pressure is about the same as that of CH4, 0.02 g/kg water. If a sample of natural gas under a pressure of 20 atm is kept in contact with 1.00 *10^3 kg of water...
  77. algebra

    the function, p(d) =1 d + ____ 33 gives the pressure, in atmospheres (atm), at an 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. The pressure at 120 fee is ____ atm.
  78. chem

    A gas at a pressure of 2.0 atm is contained in a closed container. Indicate the changes in its volume when the pressure undergoes the following changes at constant temperature. (Assume that the volume of the container changes with the volume of the gas.) The pressure increases...
  79. Physics

    I want to calibrate a barometer using current pressure. I live in a town with altitude 540m (at the top of an escarpment) but the closest internet pressure readings are from a town which is 50m above sea level(at the bottom of the escarpment). Assuming the temperature varies ...
  80. AP Chemistry

    Part 1 of 3: An apparatus consists of a 2 L flask containing nitrogen gas at 30 degrees C and 758 kPa, joined by a valve to a 11 L flask containing argon gas at 30 degrees C and 49.7 kPa. The valve is opened and the gases mix. What is the partial pressure of nitrogen after ...
  81. ap chem

    the decomposition of (CH3)2O has a rate constant of 6.8x10^-4 s^-1. the initial pressure is 135 torr, what is the partial pressure after 1420s? i don't have the slightest idea on how to solve this.
  82. Physics

    The liquid in the tube has a density of 1.48 g/cm^3 . The atmospheric pressure is 1.013 X 10^5 newtons per square meter. What is the pressure P in the container? Please walk me through your steps, don't just suggest a formula. Thank you very much.
  83. Chemistry

    A 0.0677g sample of magnesium metal reacted with excess hydrochloric acid to produce 69.9 ml of hydrogen gas. The gas was collected over water at 21.0 degrees Celsius. The levels of water inside and outside the gas collecting tube is identical. The water vapor pressure at 21.0...
  84. Physics

    One of the proposed mechanisms for the lift of an aircraft is the pressure difference that develops due to the aerodynamic shape of the wings. Higher pressure develops bellow the airplane which lifts it up. Suppose you have a semi-circular wings with radius 1 m. If air ...
  85. physics

    A hypodermic syringe is attached to a needle that has an internal radius of 0.303 mm and a length of 3.02 cm. The needle is filled with a solution of viscosity 2.00 10-3 Pa · s; it is injected into a vein at a gauge pressure of 16.1 mm Hg. Ignore the extra pressure required ...
  86. Chemistry

    Hey guys I was wondering if you guys know the answer to this: Which of the following is NOT true of colligative properties? Colligative properties are... A. independent of the chemical identity of the solute. B. responsible for lowering the vapor pressure of a solution versus ...
  87. Chemistry

    Imagine that you have a 7.00L gas tank and a 4.00L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145atm , to what pressure should you fill the...
  88. Chemistry

    Imagine that you have a 7.00L gas tank and a 4.00L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145atm , to what pressure should you fill the...
  89. Chemistry (Check)

    A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 degrees C is placed inside an oven whose temperature is 50.0 degrees D. The pressure inside the container at 20.0 degrees C was at 3.00 atm. What is the pressure of the nitrogen after its temperature is ...
  90. Chemistry

    ‘At 600.0 K, the equilibrium constant based on pressure is Kp = 1.83 x 10^2. Gaseous C2H4 and H2O are placed in a 1.2 L closed flask at 600.0 K. At equilibrium, the flask contains 0.0062 mol of C2H4 and 0.041 mol of H2O. Determine the equilibrium constant Kc assuming the ...
  91. Stastics

    A researcher wanted to test the effect of a new drug on reducing blood pressure. In the study, there were 35 participants. The researcher measured the participants’ blood pressure before and after the drug was administered. If we want to compare the mean blood pressure from ...
  92. math

    air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the florida keys before the ...
  93. Math

    air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the florida keys before the ...
  94. Math

    air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the florida keys before the ...
  95. Biology

    Pick the correct answer, and explain why it is correct. If the pressure in the thoracic cavity increases and the pressure in the ventricles due to venous return remains the same, A. Stroke volume will decrease B. heart rate will decrease C. Cardiac output will increase D. ...
  96. CHEMISTRY

    2.05 Grams of a liquid vaporized at 80 c in a 1 liter flask and a pressure of 1 atm. what is the molar mass of the gas?
  97. chemistry

    What would the pressure be if h3 po4 was vaporized in a 20L container at a temperature of 23.5 degrees Celsius?? ( gas law)
  98. chemistry

    A quantity of 2.20 mol of CaCl2 are dissolved in 1.00 L of water. What is the freezing point of this solution at 1 atm of pressure?
  99. chemistry

    calculate the pressure,in atmospheres, of 2.00 mol helium gas in a 10.0-L container at 27 celcius? Please i don't understand any of this? help please?
  100. college chemistry

    Rank from highest to lowest vapor pressure.CH3CH2CH2CH2OH,CH4,CH3CHCH2CH3CH3,CH3CH2CH2CH2CH3
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