osmotic pressure chemistry

64,382 results, page 20

  1. Chemistry

    A gas storage tank has a volume of 350,000 when the temperature is 27 degrees celcius and the pressure is 101 kPa. what is the new volume of the tank if the temperature drops -10 degrees celcius and the pressure drops to 95 kPa? please show work.
  2. Chemistry

    A weather balloon is inflated to a volume of 26.2 L at a pressure of 755 mmHg and a temperature of 32.5 ∘C. The balloon rises in the atmosphere to an altitude where the pressure is 360. mmHg and the temperature is -13.5 ∘C. Assuming the balloon can freely expand, ...
  3. Chemistry

    A weather balloon is inflated to a volume of 29.9 L at a pressure of 755 mmHg and a temperature of 33.0 ∘C. The balloon rises in the atmosphere to an altitude where the pressure is 385 mmHg and the temperature is -16.2 ∘C. Assuming the balloon can freely expand, ...
  4. science

    A piston pump containing 2 liters of nitrogen gas at 3000 psia (absolute) pressure empties its entire contents into a 10 liter pressure container. Before the transfer of gas the 10 liter container already contained nitrogen gas at 100 psia (absolute) pressure. Assuming ...
  5. chem

    convert a pressure 1.75atm to kpa convert the pressure of 1.75atm to mm Hg convert a pressure of 570 torr to atmospheres
  6. phy

    An emphysema patient is breathing pure O2 through a face mask. The cylinder of O2 contains 0.20 ft3 of O2 gas at a pressure of 2200 lb/in2. (a) What volume would the oxygen occupy at atmospheric pressure (and the same temperature)? ft3 (b) If the patient takes in 8.0 L/min of ...
  7. phy

    An emphysema patient is breathing pure O2 through a face mask. The cylinder of O2 contains 0.20 ft3 of O2 gas at a pressure of 2200 lb/in2. (a) What volume would the oxygen occupy at atmospheric pressure (and the same temperature)? ft3 (b) If the patient takes in 8.0 L/min of ...
  8. math

    underwater pressure can be found using the formula p=L+d/33 where p is the pressure (in atmospheres), and d is the depth of the water in feet. If a scuba diver is experiencing 3.4 atmospheres of pressure, what is the depth of the diver? The L is really one. P= 1 + depth/33 ...
  9. Chem

    if the pressure was increased in this reaction : 2NO(g)+ O2 =====> 2NO2 <==== wouldnt the product side be favored? Please tell me if I'm right or wrong There are three volumes on the left, two on the right. If pressure is increased, the reaction to the right is favored. ...
  10. Chemistry

    Three of the primary components of air are carbon dioxide, nitrogen, and oxygen. In a sample containing a mixutre of only these gases at exactly one atmosphere pressure, the partial pressure of carbon dixoide and nitrogen are given as Pco2 = 0.285torr and Pn2=593.525torr. What...
  11. Chemistry

    Consider two flasks. What are the final partial pressure of H2 and N2 after the stopcock between the two flasks is opened? Assume the final volume is 3.00 L. What is the total pressure in torr? Flask 1: 2.00 L H2, 475 torr Flask 2: 1.00 L N2, 0.200 atm Imagine two round flasks...
  12. Chemistry

    In a study of the following reaction at 1200K it was observed that when the equilibrium partial pressure of water vapor is 15.0 torr, the total pressure at equilibrium is 36.3 torr. 3Fe(s)+4H2O(g) (reversible arrows) Fe3O4(s)+4H2(g) Calculate the value of Kp for this reaction ...
  13. Chemistry

    In need of help setting up each of these problems. Under the conditions in a laboratory experiment, 0.0513 grams of aluminum (At. Wt.=27.0) was reacted with excess hydrochloric acid to produce hydrogen gas according to the following balanced equation: 2 Al+ 6 HCL -> 2 AlCl3...
  14. chemistry garde 11

    plases help me.... im really stuck in this question... i have no clue how to do it... please help me oxygen gas generated in the thermal decomposition of potassium chlorate in water. the total pressure of this system was measured to be 762 mmHg and the pressure of water was 22...
  15. chemistry

    The vapor pressure of pure water at 70°C is 231 mm Hg. What is the vapor pressure depression of a solution of 115 g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 205 g of water? Use molar masses with at least as many significant figures as the data ...
  16. Physical Chemistry

    A 3 mg sample of an unknown ideal gas is subjected to an adiabatic and mechanically reversible expansion from an initial pressure of 2 atmospheres to a final pressure of 300 torr. Given that gamma for the gas is 1.532 and that the temperature drop achieved in the expansion is ...
  17. Chemistry

    The solubility of NH3 in H2O is 518 g/L at a partial pressure of 760.0 torr. a. Calculate the value of the Henry's Law constant for NH3 b. Calculate the solubility of NH3 in H2O at a partial pressure of 225.0 torr.
  18. Chemistry help!

    A sample of gas at a temperature of 37.0°C has a pressure of 725 torr and occupies a volume of 3.44 L. a. Use Boyle’s law to calculate the new pressure if the temperature is held constant and the volume is increased to 6.54 L. torr b. Use Gay-Lussac’s law to calculate the...
  19. Chemistry

    Which of the following statements is incorrect concerning the thermochemical equation below? 2SO3(g)  2SO2(g) + O2(g); H° = 198 kJ a. The enthalpy of the reactants exceeds that of the products. b. The reaction is endothermic. c. For the reaction 2SO2(g) + O2(g...
  20. Chemistry

    Which of the following statements is incorrect concerning the thermochemical equation below? 2SO3(g)  2SO2(g) + O2(g); H° = 198 kJ a. The enthalpy of the reactants exceeds that of the products. b. The reaction is endothermic. c. For the reaction 2SO2(g) + O2(g...
  21. Chemistry

    How do I figure out what element is it describibg if I am given the temperature the pressure and the g/L.
  22. Chemistry

    What would increase the pressure inside a tank of helium gas?
  23. Chemistry

    A gas initially at 20C must be changed to ? C to triple the pressure.
  24. chemistry

    A gas initially at 30C must be changed to ? C to triple the pressure.
  25. Chemistry

    A gas initially at 20 C must be changed to ____ C to triple the pressure.
  26. Chemistry ? help!

    How do I perform the following conversions of pressure units: 168 torr = What?
  27. chemistry

    f the pressure of 2 L of a gas at STP doubles, the new volume would be
  28. chemistry

    what is the relationship between the area a force is applied to and the resulting pressure?
  29. chemistry

    how are the absolute temperature and volume of a gas at constant pressure related?
  30. chemistry

    If 20.0g of nitrogen gas has a volume of 4.00L and a pressure of 6.0 atm, what is its temperature?
  31. Chemistry

    Determine the density of chlorine gas at 22C and 1.00 atm pressure.
  32. chemistry

    at what temperature does 16.3 g of nitrogen gas have a pressure of 1.25 atm in a 25.0 - L tank?
  33. Chemistry

    what is the pressure exerted by 32g of 0xygen(O2) in a 22.0 L container at 30.0`C? What Law do I use?
  34. Chemistry

    What equation is used when talking about airplane cabin pressure?
  35. College Chemistry

    Does Vapor Pressure decrease as intermolecular forces increase???
  36. chemistry

    What gas volume does the water have at a temperature of 100 and 1 pressure?
  37. Chemistry

    Which solution has a higher vapor pressure, 1 M NaCl or 1 M glucose(C6H12O6)?
  38. chemistry

    Vapor pressure ___________ as the temperature of the liquid in equilibrium with it decreases.
  39. chemistry

    Vapor pressure ___________ as the temperature of the liquid in equilibrium with it increases.
  40. chemistry

    Calculate the pressure in the flask in torr, atmosphere, and pascals if ha = 114 mm.
  41. chemistry

    What is the new volume of the balloon, where the pressure is 0.25 {\rm atm} and the temperature is -20^\circ C .
  42. Chemistry

    Calculate the density of F2 gas at 27 degree Celsius and 1.00 atm pressure?
  43. Chemistry AP

    What is the mass of oxygen in a ml flask if the pressure is 1.00 atm and a temperature of 22.0 Celsius?
  44. chemistry

    A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?
  45. chemistry

    A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?
  46. chemistry

    A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?
  47. chemistry

    Assuming a temperature of 37 C and 1 atm pressure, how many mol/min of CO2 is this?
  48. chemistry

    What are the effects on chemical equilibrium of following; Temperature , Concentration and Pressure.
  49. chemistry

    What volume does 627 cm3 of a gas at 14°C occupy at 40°C, if the pressure does not change?
  50. chemistry

    Explain how the addition of a solute affects the vapor pressure of the solvent.
  51. Chemistry

    Why is it necessary to correct the pressure of a gas that is collected over water?
  52. Chemistry

    If the pressure on a balloon were quadrupled what would happen to the balloons volume?
  53. chemistry

    a 0.296g of CO2 has a volume of 565ml and a pressure of 425mmHG, what is the temperature??????
  54. Chemistry

    For the reaction 2 N2O <===>O2 + 2 N2 what happens to the equilibrium position if the pressure is increased
  55. chemistry

    what volume does 2.5 moles of carbon monoxide occupy at 50.5 kPa pressure and 20.0 C?
  56. Applied Chemistry pls help!

    At what depth in water is the pressure equal to 2.0m atmosphere?
  57. Chemistry Lab

    Does the pressure exerted by a gas depend on its molar mass?
  58. chemistry

    what is the total pressure in a gas mixture of 100 mm hg O2, 820 mm hg N2, and 1.5 mm hg CO2?
  59. chemistry

    what is the total pressure in a gas mixture of 100 mm hg O2, 820 mm hg N2, and 1.5 mm hg CO2?
  60. Chemistry

    the pressure in a 10.0 L cylinder is raised from 483 mm Hg to 762 mm Hg. What is the new volume?
  61. Chemistry

    If the pressure is 10.0 atm, what is the temperature? If a 2.53-L container is filled with 169 g argon
  62. chemistry

    how does an increase in pressure affect the following reaction? C2H2(g)+H2(g) C2H4(g)
  63. Chemistry

    if the pressure read by the barometer is 0.882atm, what is the height of the column of mercury in cm?
  64. chemistry

    what will be the pressure of 0.010m of oxygen gas in a 4.5L flask at a temperature of 10,000C?
  65. Chemistry

    What is the pressure in a 22.1-L cylinder filled with 16.3g of oxygen gas at a temperature of 329K?
  66. Chemistry

    Find density of C02 at room temperature and normal pressure.
  67. CHEMISTRY

    The pressure exerted by 6.0g of methane gas in a 0.03m3 vessel at 129degreeC is.
  68. Chemistry

    At what pressure would 0.150 mole of nitrogen gas at -23.0^o C occupy 8.90 L ?
  69. Chemistry

    What is the yield of the synthesis of ammonia to 400° C and 500 atm of pressure?
  70. Chemistry

    calculate the volume occupied by 7g of N2 gas at 27 degree c and 750mm Hg pressure
  71. chemistry help!!!!!

    Consider the following reaction: Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm, and that the initial partial pressure of A is 0.0 atm. Make any ...
  72. Chemistry

    Mass of an empty flask and stopper is 55.844g. 5mL of an unknown liquid is added and heated in a water bath at 99.7 degrees C. It then cools down. The stopper is removed and then replaced. The weight of all of this is 56.101g. The volume of the flask is 248.1 mL. Barometric ...
  73. Physics (please help!!!!)

    Blood pressure is usually reported in millimeters of mercury (mmHg) or the height of a column of mercury producing the same pressure value. Typical values for an adult human are 130/80; the first value is the systolic pressure, during the contraction of the ventricles of the ...
  74. Algebra

    Can someone help me understand this? The function p(d)=1+d/33 gives the pressure in the atmosphere (atm) at a depth in the sea (d is in feet) Note that P(0)=1 atm, P(33)=2 and so on find the pressure at 150 feet. The pressure at 150 feet is ? atm?
  75. Math-Algebra

    The pressure of a gas varies directly as its temperature. IF the pressure of a gas is 200 pounds per square inch (lb/in^2) at a temperature of 65.5 degrees C, what is the pressure of the gas when the temperature is 250 degrees F?
  76. college physics

    a glass container was filled with oil with a density of 0.80 g/cm^3 up to 9 cm. in height. 1) what is the pressure at the base of the container? 2) what is the pressure if depth is 3 cm. from the surface of the oil? 3) what is the pressure if depth is 4 cm. above the base?
  77. chem

    A sample of O2 gas was collected over water at 23ºC and 711 torr. What is the partial pressure of the O2? (The vapor pressure of water at 23ºC is 21.2 torr.) Partial pressure of O2:_____torr
  78. CHEMISTRY

    1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume, a. how many liters of air are needed for complete combustion of 25.0 ...
  79. Physics

    If you dive to 50 m below the surface of a lake, a) what is the pressure due to the water alone? b)What is the total or absolute pressure at that depth?
  80. physics

    Determine the absolute pressure at the bottom of a lake that is 13.3 m deep. The acceleration of gravity is 9.8 m/s 2 and atmospheric pressure is 1.01 × 10 5 Pa . Answer in units of Pa
  81. physics

    A book has the mass of 1.5 kg what is pressure that it puts down on the table if it has the dimension 20cm by 26 cm? What would the pressure be if it were on end with the dimensions of 20 cm by 4 cm?
  82. AP Chem

    Calculate the partial pressure of 4.0 g methane when mixed with 16.0 g oxygen. The total pressure of both gases is 600. torr.
  83. science

    130cm3 of a gas at 20oc excert a pressure of 750mmhg calculate it's pressure if it's volume is increased to 150cm3 at 35oc
  84. Science

    22g N2, 44g CO2 and 18g of CH4 in contenar if the pressure is 750mm calculated of the partial pressure of each gases
  85. Physics

    What is the absolute pressure if the gauge pressure is 3.2 atm?
  86. AP Chemistry

    1,2-Benzanthracene is a yellow-brown nonvolatile solid with molecular weight 228.29g*mol-1. an 18.2632-g sample of 1,2-benzanthracene is dissolved in 250.0 g of benzene, C6H6. Whta is the vapor pressure of this solution at 25C, in millimeters of mergury, if the vapor pressure ...
  87. Chemistry

    Please let me know how I am doing with the following three chemistry questions. 1.A sample of a gas in thermometer has a volume of 135mL at 11 degree celcius.Indicat what temperature(in k and degree celcius)would correspond to the foll.volume: (a)volume:113mL temperature ?? ...
  88. physics 2

    A reservoir dam holds an 8 km2 lake behind it. Just behind the dam, the lake is 14.0m deep. What is the gauge pressure at the base of the dam (in Pascals)? What is the absolute pressure at a point 2.5 m down from the surface? Assume the pressure at the surface is one atmosphere.
  89. Chemistry

    Nitrogen and hydrogen, with volumes of 12.0 L each, are injected into a sealed rigid reaction chamber containing a catalyst. The pressure of the chamber is 8.00 atmospheres and at a known temperature. The reaction is allowed to proceed to completion while being maintained at a...
  90. Chemistry

    C2H5NO2 + 2H2O → 2CO2 + NH3 + 3H2 You begin with 1.25 × 10-2 moles of glycine and an excess amount of water that will allow the reaction to proceed completely to products. This is all in a vessel with a volume of 850 mls at 27°C. Assume that the vessel begins with air ...
  91. chemistry

    1.50 mol sample of helium at a certain pressure and temperature has a volume of 31.4 L. a second sample of helium at the same temperature and pressure has a volume of 42.4 L. Therefore the second sample contains how many moles of helium?
  92. Chemistry

    If I was designing an experiment where hydrogen gas was collected over a 0.1 M aqueous HCl solution from the reaction with zinc metal and I assume complete, rapid reaction, what mass of zinc would be used to collect between 50 and 100 mL of the gas? Note: I calculated using ...
  93. chemistry

    Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. independent of the chemical identity of the solute. C. dependent on the ...
  94. CHEMISTRY

    The volume of air in a persons lungs is 615 mL at a pressure of 760 mmHG inhalation occures at the pressure in the lungs drops to 752 mmHG, to wha volume did the lungs expand I got 615*760=V2*752=621 i keep getting 621 and the answer is 620 what i'am i doing wrong
  95. chemistry chem check

    an ideal mixture contains 0.4 mol of nonvolatile solute and 0.8 mol of volatile solvent. the resulting vapor pressure was 60 mmHg at 300K. What vapor pressure should be reported at 300 K for pure solvent? A) 48 mmHg B) 60 mmHg C) 75 mmHg D) 90 mmHg **Would it be B) 60 mmHg ...
  96. Chemistry

    Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. dependent on the mass of solute present. C. independent of the chemical ...
  97. Chemistry

    A mixture of ethyne ( C2H2 ) and methane ( CH4 ) occupied a certain volume at a total pressure of 16.8 kPa. Upon burning the sample to form CO2 and H2O, the CO2 was collected and its pressure found to be 25.6 kPa in the same volume and at the same temperature as the original ...
  98. physics thermodynamics

    A gas expands from a volume of 2.00m^3 to 6.00m^3 and does 6912 joules of work against a constant outside pressure. Calculate this outside pressure in Pa. The answer is 1730 Pa, but I don't know how to get that. I honestly have no idea where to start or what formulas to use. ...
  99. chemistry

    calculate the internal energy change for each of the following. a. one hundred(100.)joules of work are required to compress a gas. at the same time the gas releases 23 J of heat. b. a piston is compressed from a volume of 8.30 L to 2.80 L against a constant pressure of 1.90 ...
  100. Chemistry

    Imagine that you have a 7.00 gas tank and a 3.00 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 145 , to what pressure should you fill the ...
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