# osmotic pressure chemistry

64,622 results, page 9
1. ## chemistry

A sample of gas occupies 100ml at 27degree Celsius and 740mm pressure. The temperature the gas will have,when its volume is changed to 80ml at 740mm pressure is?
2. ## Chemistry

At 103◦C, the pressure of a sample of nitrogen is 1.89 atm. What will the pressure be at 275◦C, assuming constant volume? Answer in units of atm
3. ## Chemistry

A quantity of gas under a pressure of 302 kPa has a volume of 600. cm3. The pressure is increased to 545 kPa, while the temperature is kept constant. What is the new volume?
4. ## Chemistry

A quantity of gas under a pressure of 302 kPa has a volume of 600. cm3. The pressure is increased to 545 kPa, while the temperature is kept constant. What is the new volume?
5. ## chemistry

A sample of air from the basement of a home is found to contain 8.3 ppm of radon. What is the partial pressure of radon in the basement if the total pressure is 755 torr?
6. ## Chemistry

Methane (CH4) behaves as an ideal gas under standard temperature and pressure conditions. What volume is occupied by 1 kg of methane at a temperature of 35 °C and a pressure of 0.9 atm?
7. ## Chemistry

a cylinder of helium has a volume of 8.0 L. The pressure of the gas is 388 lb in -2 at 25*C. What volume will the helium occupy at a standard atmospheric pressure (14.7 lb in -2) assuming there is no temperature change?
8. ## chemistry

t 103 ◦ C, the pressure of a sample of nitrogen is 1 . 89 atm. What will the pressure be at 275 ◦ C, assuming constant volume? Answer in units of atm
9. ## chemistry

20g of nitrogen gas and 10g of helium gas are placed together in a 5L container at 25C . Calculate the partial pressure of each gas and the total pressure of the gas mixture.
10. ## Chemistry

A sample of an ideal gas in a closed container (3.00 L) at 25.0 degrees C is heated to 300 degrees C. What is the pressure of the gas at this temperature? Do I use P1/T1=P2/T2? I was told to use that, but I don't know what pressure is. Thanks
11. ## Chemistry

4 L of oxygen at a pressure of 400 Kpa and 1L of nitrogen at 200 Kpa were introduced in to 2 L vessel. (A)What is the total pressure of the gases in the vessel. (B)What is the mole fraction of each gas?
12. ## chemistry

The volume at stp occuppied by a gas Q originally occupying 153.7dm at 287k and 750mm pressure (vapor pressure of gas Q at 287k is 12mm of Hg)
13. ## Chemistry 105

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 9.3 atm?
14. ## Chemistry

A 1.00 L flask is filled with Ar by water displacement at 20.0°C. the atmospheric pressure is 759.6 torr. after correcting for water vapor pressure in the flask, determine how many moles of Ar are present
15. ## Chemistry

At 125 degrees Celsius, the pressure of a sample of He gas is 345 mmHg. At what temperature degrees Celsius will the pressure become 690 mm Hg, if the volume remains constant?
16. ## chemistry

which of the following factors affect the vapor pressure of a liquid? amount of liquid atmospheric pressure addition of solute temperature type of liquid surface area of the liquid
17. ## Chemistry

A gaseous mixture of O2, H2, and N2 has a total pressure of 1.50 atm and contains 8.20 g of each gas. Find the partial pressure of each gas in the mixture They don't give you Volume and Temperature. Please explain it to me, thank you!
18. ## chemistry

The volume at stp occuppied by a gas Q originally occupying 153.7dm at 287k and 750mm pressure (vapor pressure of gas Q at 287k is 12mm of Hg)
19. ## chemistry

A sample of gas with an initial volume of 32.50 L at a pressure of 755.0 torr and a temperature of 315.0 K is compressed to a volume of 15.80 L and warmed to 395.0 K. What is the final pressure of the gas?
20. ## Chemistry

At its normal boiling point of 126°C n-octane, C8H18, has a vapor pressure of 760 torr. What is its vapor pressure at 25°C? the enthalpy of vaporization of n-octane is 39.07 kj/mol.
21. ## ap chemistry

Suppose that a sample of gas occupies 117 mL of volume at 25C and a pressure of 289 torr. What would be the volume if the pressure were changed to 490 torr at 25C? Answer in units of mL
22. ## Chemistry

A Partially weather balloon has a volume of 195 L at a pressure of 0.993 atm. What will be the pressure in the balloon when it is inflated to a volume of 7500 L? (assume to temp. change)
23. ## Chemistry

Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
24. ## chemistry

Suppose a balloon is filled so that its volume is 2.00 L when the pressure is 1.10 atm and the temperature is 300k. What volume will it occupy if it rises to an elevation where the pressure is 418mm Hg and the temperature is 200k?
25. ## Chemistry

At a temperature of 57oC, a gas inside a 5.30 L metal canister has a pressure of 4000 torr. If the temperature is decreased to 13oC (at constant volume), what is the new pressure of the gas?
26. ## College Chemistry

A mixture of He and O2 is placed in a 4.00L flask at 32 degrees Celsius. The partial pressure of the He is 2.7 atm and the partial pressure of the O2 is 1.4 atm. What is the mole fraction of O2?? I don't understand how to do this.
27. ## Chemistry

Trimix 10/50 is a gas mixture that contains 10% oxygen and 50% helium, ant the rest is nitrogen. If a tank of Trimix 10/50 has a total pressure of 2.07 x 10 4 kPa, then what is the partial pressure of helium?
28. ## Chemistry

Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
29. ## chemistry

if 429 grams of gas occupies 25.6L at 49 degrees C at a pressure of 759 mmHg what volume will 4.29g of gas will occupy at 53 degrees C (assume pressure is unchanged)
30. ## chemistry

a balloon is filled with 15 L of an ideal gas of 20C. at this temperature the pressure of the gas is 1520 mm Hg. Suppose that the volume of the gas is reduced to 5 L at 290 K. what is the new pressure of the gas in atmospheres?
31. ## chemistry

SO2 and O2 are placed in a 2.00 L container at a temperature of 786 °C and a pressure of 6.99 atm. During the reaction, SO3 forms and the pressure falls to 1.89 atm. Determine how many moles of SO3 are generated.
32. ## chemistry

The volume of a gas is 250 mL at 340.0 kPa pressure. With the temperature remaining constant, what will the volume be when the pressure is reduced to 50.0 kPa? Don't forget the units.
33. ## Chemistry

Calculate the volume at s.t.p. occupied by a gas 'Q' originally occupying 153.7cc at 287K and 750mm pressure [vapor pressure of gas 'Q'at 287K is 12mm of Hg]
34. ## Chemistry

a gas occupies 2 m3 at 100k and exerts a pressure of 100kpa. What volume will the gas occupy if the temperature is increased to 400.0k and the pressure is increased to 200.0kPa?
35. ## chemistry

At a certain temperature, the Kp for the decomposition of H2S is 0.734.Initially, only H2S is present at a pressure of 0.102 atm in a closed container. What is the total pressure in the container at equilibrium?
36. ## chemistry

A steel tank contains carbon dioxide at 34 celsius and is at a pressure of 13.0 atm. Determine the internal gas pressure when the tank and its contents are heated to 100 celsius
37. ## Chemistry

Calculate the volume at s.t.p. occupied by a dry gas 'Q' originally occupying 153.7cc at 287K and 750mm pressure [vapor pressure of gas 'Q'at 287K is 12mm of Hg]
38. ## Chemistry

A gas occupying a volume of 664 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?
39. ## Chemistry

A sample of oxygen gas at 295 kPa takes up 456 L of space at standard temperature (the “T” in STP). What is the new volume when the pressure is lowered to standard pressure (the “P” in STP)?
40. ## chemistry

A weather balloon is inflated to a volume of 27.0 at a pressure of 730 and a temperature of 31.3. The balloon rises in the atmosphere to an altitude, where the pressure is 365 and the temperature is -14.6. use as a ideal gas behavior

You have a 4.0 L steel tank containing hydrogen gas. You are able to heat or cool the tank, and measure the pressure of the gas. At what temperature, in Celsius, would you read a pressure of 4.5 atm ? 298
42. ## chemistry

a scuba driver is using eanx32, an enhanced nitrox gas mixture. this mixture contains 32% oxygen with 68% nitrogen. if the cylinder is at a pressure of 250 kpa, what is the partial pressure of oxygen?
43. ## Chemistry

An aqueous CaCl_2 solution has a vapor pressure of 82.1mmHg at 50C. The vapor pressure of pure water at this temperature is 92.6mmHg. What is the concentration of CaCl_2 in mass percent?
44. ## chemistry

A gas sample occupying a volume of 88.7 mL at a pressure of O.917 atm is allowed to expand at constant temperature until its pressure reaches 0.335 atm. what is its final volume?
45. ## chemistry

A balloon is filled to 1.000L at the bottom of the Marianas Trench, where the pressure exerted on it is 1065 atm and the temperature is 2°C, and taken to Columbus, where the pressure is 0.967 atm and the temperature is 30.00°C. What is its new volume?
46. ## chemistry

3 moles of an ideal gas initially at a pressure of 1 atm and a temprature of 100°C are expanded to twice the initial volume and then heated to 200°C at the new volume.What is the final pressure in atm?
47. ## Chemistry

A gas occupying a volume of 664 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?
48. ## Chemistry

At a temperature of 57oC, a gas inside a 5.30 L metal canister has a pressure of 4000 torr. If the temperature is decreased to 13oC (at constant volume), what is the new pressure of the gas? I know you use the formula (P1/T1) = (P2/T2)
49. ## Chemistry

Helium was heated in a sealed container from 18°C to 36°C. The original pressure of helium was 0.84 atm. Find the new pressure assuming V and n remain the same. I put 0.84 over 18 and set it equal to x over 36. I got 1.7 atm but it says its wrong?
50. ## chemistry

a steel cylinder with nitrotgen hydrogen and ammonia gases is at 500C and 5.00 atm if patrtila pressure of nitrogen is 1850 mm Hg and hydrogen is 1150 mm Hg what is the partial pressure of ammonia in mm H</p>
51. ## chemistry

a racing tire has a pressure of 148 kPa at 19 degrees Celcius. What willthe pressure be at 42 degrees Celcius, assuming the volume remains the same?
52. ## Chemistry

At a temperature of 30.°C, a gas inside a 1.50 L metal canister has a pressure of 760 torr. If the temperature is increased to 55°C (at constant volume), what is the new pressure of the gas?
53. ## Chemistry

A sample of nitrogen gas is collected over water at a temperature of 23°C. What is the pressure of the nitrogen gas if the atmospheric pressure is 791 mm Hg? Answer in units of mm Hg
54. ## CHEMISTRY

The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
55. ## Chemistry 105

A sample of gas has an initial volume of 33.0 L at a pressure of 1.1 atm. If the sample is compressed to a volume of 10.0 L, what will its pressure be? (Assume constant temperature.)
56. ## chemistry

if i have 5.6 liters of gas in a piston ata pressure of 206 kPa and compress the gas until its volume is 4.8L, what will the new pressure inside the piston be? how do i that problem?
57. ## Chemistry

Calculate the normal boiling point of a compound that has a vapor pressure of 19.30kPa at 167 Fahrenheit and a vapor pressure of 1.86kPa at 77 Fahrenheit.
58. ## chemistry

The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
59. ## Chemistry

The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
60. ## chemistry

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

the volume of a gas is 250 mL at 350 kPa pressure. what will the volume be when the pressure is reduced to 50 kPa, assuming the temperature remains constant?
62. ## Chemistry

At standard temperature and pressure (0∘C and 1.00atm), 1.00mol of an ideal gas occupies a volume of 22.4L. What volume would the same amount of gas occupy at the same pressure and 30∘C?
63. ## AP Chemistry

Suppose that a sample of gas occupies 140 mL of volume at 25C and a pressure of 252 torr. What would be the volume if the pressure were changed to 552 torr at 25C?
64. ## Chemistry

The vapor pressure of pure water at 10C is 9.2 torr. How many grams of MgCl2 would you need to add to 500 mL of water to drop the vapor pressure to 8.0?
65. ## chemistry

The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
66. ## Chemistry

A sample of methane gas at room temperature has a pressure of 1.50 atm and a volumne of 10.5 L. If the temperature is kept constant, what will be the new volume if the pressure is increased to 2.00 atm?
67. ## chemistry

A 12.8 L sample of Ne gas initially has a temperature of 32.7oC at a pressure of 2.57 atm. What is the new pressure, in atm, if the volume is changed to 10.6 L and the temperature is decreased to 13.9oC?
68. ## Chemistry

At a total atmospheric pressure of 1.00 atm, the partial pressure of CO2 in air is approximately 4.0×10−4 atm. If at 20 ∘C and a partial pressure of 760 mmHg, the solubility of CO2 in water is 0.169 g/100mL, what is the solubility of CO2 in an
69. ## Chemistry

A tank contains Ar at 1.33 atm and Kr at 3.59 atm. We add enough Xe to give a total pressure of 6.3 atm. What is the partial pressure of the Xe?
70. ## physics

which two object have masses 20kg and 15kg are placed on a plane surface.Both have same area.Which one is the correct answer for pressure. 1)20kg mass least pressure 2)15kg mass least pressure 3)20kg mass most pressure 4)both have same pressure
71. ## Chemistry

At T = 25 degrees Celsius, the reaction No2 <-> 2NO +O2 has an equilibrium constant K=5.0*10^-13. Suppose the container is filled with NO2 at an initial pressure of 0.25 atm. Calculate the partial pressure of NO at equilibrium
72. ## chemistry

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?
73. ## Chemistry

At T = 25 degrees Celsius, the reaction No2 <-> 2NO +O2 has an equilibrium constant K=5.0*10^-13. Suppose the container is filled with NO2 at an initial pressure of 0.25 atm. Calculate the partial pressure of NO at equilibrium
74. ## Chemistry

A balloon originally had a volume of 6.63 L at 86 °C and a pressure of 684 torr. The balloon must be cooled to __________°C to reduce its volume to 6.03 L (at constant pressure). Express answer to the tenth decimal place
75. ## Chemistry

How would you prepare 500.0 of an aqueous solution of glycerol with a vapor pressure of 24.8mm Hg at 26 degree Celsius (vapor pressure of pure water=25.21mm Hg)? assume the density of the solution to be 1.00 g/mL.
76. ## chemistry

A bag of potato chips contains 575mL of air at 25.0∘C and a pressure of 765mmHg . Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 458mmHg and the temperature is 10.0∘C?
77. ## Chemistry

A balloon originally has a volume of 4.39L at 44 C and a pressure of 729 torr. What temperature must the balloon be cooled to to reduce its volume to 3.78L at the same pressure? (A) 38 C (B) 72.9 C (C) 0 C (D) 546 C (E) 273 C Is the correct answer (A), 38
78. ## Chemistry

The mass percent of a three component gas sample is 95.2% PF5, 1.40% C2H2 and 3.40% C3H6. Calculate the partial pressure (atm) of PF5 if the total pressure of the sample is 570.0 torr.
79. ## Chemistry

Determine the vapor pressure (in atm) of water in an aqueous solution of 12% by mass ethylene group (antifreeze) if the vapor pressure of pure water at that temperature is 0.095 atmospheres.
80. ## chemistry

A 300 mL sample of hydrogen gas is at a pressure of 0.500 kPa. If the pressure increases to 0.750 kPa, what will be the final volume of the sample? Assume that the temperature stays constant
81. ## chemistry

A scuba diver takes a 2.3L balloon from the surface, where the pressure is 1.0atm and the temperature is 37degrees C, to a depth of 35m, where the pressure is 4.5atm and the temperature is 18degrees C.what is the final volume at this depth?
82. ## chemistry

a weather balloon is filled with helium to a volume of 250 l at sea level, where pressure is 760 mm hg. assuming constant temperature, what will be the volume when the balloon raises to a height of 25 km, where the pressure is only 10 mm hg
83. ## Chemistry

A gas sample is connected to a closed-end manometer. The difference in mercury levels in the 2 arms is 115 mm. What is the gas pressure in torr if the atmospheric pressure is 750. torr?
84. ## Chemistry

A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. what is the new pressure when the temperature is changed to 336K and the Volume is decreased to 450. milliliters? a- 0.177 b- 14.1 c- 5.64 d- 4.43
85. ## Chemistry

A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. what is the new pressure when the temperature is changed to 336K and the Volume is decreased to 450. milliliters? a- 0.177 b- 14.1 c- 5.64 d- 4.43
86. ## chemistry

A 300 mL sample of hydrogen gas is at a pressure of 0.500 kPa. If the pressure increases to 0.750 kPa, what will be the final volume of the sample? Assume that the temperature stays constant
87. ## Chemistry PLS HELP!!!

A student collects oxygen gas by water displacement at a temperature of 17 Celsius. A barometer reads 92.3 kPa. What is the pressure of the water vapor? Look it up on a water vapor pressure chart. What is the pressure of the oxygen gas? (Answer: ~14.0 mmHg
88. ## CHEMISTRY

For the reaction I2 + Br2 <-> 2IBr Kc=280 at 150C . Suppose that 0.500 mol IBr in a 2.00-L flask is allowed to reach equilibrium at 150C . What is the equilibrium partial pressure of IBr? What is the equilibrium partial pressure of I2? What is the
89. ## Chemistry

A 260-ml flask contains pure helium at a pressure of 756torr . A second flask with a volume of 470ml contains pure argon at a pressure of 717 torr . A)If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial
90. ## Chemistry

A 7.65 g sample of potassium chlorate,KClO3, was heated to decompose all the oxygen. It was found that 2.25 L of oxygen was collected over water at 25.00degreesC and 1.00 atm of pressure. The vapor pressure of water at that temperature is 23.8 mm Hg. How
91. ## 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?
92. ## 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?
93. ## chemistry

A sample of gas has an initial volume of 20.9 L at a pressure of 1.4 atm If the sample is compressed to a volume of 12.9 L: , what will its pressure be? (Assume constant temperature.) Thank you
94. ## Chemistry

A sample of nitrogen is collected over water at 21 degrees Celsius at a pressure of 745 torr. What is the partial pressure, in torr, of the nitrogen?
95. ## Chemistry

The solubility of nitrogen in water is 6.9 x 10^-4 at exactly 1 atm pressure. What is the solubility of nitrogen under .80 atmp pressure? I don't know where to start with this problem, what formula do I use?
96. ## 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?
97. ## Chemistry :((((

a gas occupies a volume of 5L at a temp. of 20C and a pressure of 1atm. what volume would it occupy at a temp. of 30C and a pressure of 1.1 atm.
98. ## chemistry

if oxygen gas were collected over water at 22c and the total pressure of the wet gas were 710 mm hg what would be the partial pressure of the oxygen?
99. ## Chemistry

if a gas is initially at 1.5 atm of pressure, Occupies a volume of 3.0 L at a tmepeature of 293K, what will be the new volume if the pressure increases to 2.5 atm and is now at 303K?
100. ## chemistry

A gas sample with a volume of 5.3L has a pressure of 745mmHg at 33degrees C.What is the pressure of the sample if the volume remains at 5.3L but the temperature rises to 79degres C?