# osmotic pressure chemistry

64,480 results, page 5

1. ### physical chemistry

2 liters of N2 at 0 degree Celsius and 5 atm pressure are expanded isothermally against a constant pressure of 1 atm until the pressure of the gas is also 1 atm. Assuming the gas to be ideal, what are the values of work,delta E, delta H, and q for the process?
2. ### Chemistry

Divers know that pressure exerted by the water increases about 100kPa with every 10.2 m of deptt. This means that at 10.2 m below the surface, the pressure is 201kPa; at 20.4 m, the pressure is 301kPa; and so forth. Given that the volume of a balloon is 3.5 L at STP and that ...
3. ### Chemistry

you reacted magnesium with a hydrochloric acid aqueous solution and hydrogen gas was produced. Let's say that you collected the gas given off by the reaction and measured it's pressure as 102.1 kPa. If the vapor pressure of water is 16.2 kPa at this temperature, then what is ...
4. ### Chemistry

Container A contains argon gas at 0C and pressure 380mmHg. Container B of volume 700 ml contains neon gas at 25C and pressure of 3atm. Both of these gases are placed in a 2L vessel at 273K and the total pressure is 1.46atm. What is the volume of container A?
5. ### Chemistry

A mixture of 0.2mole of alcohol A and 0.5mole of alcohol has a total vapour pressure of 40mmHg at 298k,if the mixture obey's Raoult's law,find the pure pressure of B at 298k given that the pressure of A is 20mmHg at 298k
6. ### chemistry

Calculate the pressure drop expected on hydrogenation of the mixture of 5.00 ml of cyclohexene and 35 ml of cylclohexane. I know I have to use PV=nRT but this is all I know we are starting at 60 psi of pressure. We also used hydrogen gas if that helps
7. ### chemistry

A gas is heated from 256 K to 287 K while its volume is increased from 20.0 L to 30.0 L by moving a large piston within a cylinder. If the original pressure was 1.16 atm, what would be the final pressure?
8. ### college chemistry

calculate the pressure exerted by 2.50 moles of CO2 confined in a volume of 5.00 L at 450K. Compare the pressure with that predicted by the ideal gas equation.
9. ### chemistry

I what this question to be solve.what will be the pressure of 50cm^3 of oxygen gas in a piston initially at a pressure of 2atm when the volume was 500cm^3 at a steady temperature of 300k
10. ### physical chemistry

a mixture of toluene and water boils at 90 degrees. calculate the vapour pressure at this temperature. Assume the atmospheric pressure to be 760 mmHg
11. ### college chemistry

calculate the pressure exerted by 1.00 moles of CO2 confined in a volume of 5.00 L at 450. K. Compare the pressure with that predicted by the ideal gas equation.
12. ### Chemistry

Which of the following changes would shift the reaction shown here to the right (product side)? 4HCl (g) + O2(g) < = > 2Cl2 (g) + 2 H2O (g) addition of Cl2*** decrease of pressure increase of pressure removal of O2
13. ### Chemistry....help

If 0.500L of dry N2 was bubbles into an inverted flask through water to saturate it at 25.0C, what would be the total volume at the lab atmospheric pressure. Our pressure was : 757.5 mmHg
14. ### Chemistry

An aerosol can is empty, except for the propellant gas which exerts a pressure of 1.20 atm at 21 °C. If the can is thrown into a fire and heated to a temperature of 565 °C, what will be the pressure inside the hot can?
15. ### chemistry 106

calculate the pressure exerted by 1.00 moles of CO2 confined in a volume of 5.00 L at 450. K. Compare the pressure with that predicted by the ideal gas equation.
16. ### Chemistry

Which of the following changes would shift the reaction shown here to the right (product side)? 4HCl (g) + O2(g) < = > 2Cl2 (g) + 2 H2O (g) addition of Cl2*** decrease of pressure increase of pressure removal of O2
17. ### chemistry

A gas has pressure of 43 pKa. What is the pressure in mm Hg?
18. ### Chemistry

The pressure in pressure cooker is 1.90 what will be the temperature
19. ### chemistry

Calculate the vapor pressure lowering of water when 5.67 g of glucose, C6H12O6, is dissolved in 25.2 g of water at 25 ºC. The vapor pressure of water at 25º C is 23.8 mmHg. What is the vapor pressure of the solution?
20. ### chemistry

A 14.5-L tank is filled with H2 to a pressure of 2.00 102 atm. How many balloons (each 2.00 L) can be inflated to a pressure of 1.00 atm from the tank? Assume that there is no temperature change and that the tank cannot be emptied below 1.00 atm pressure.
21. ### Chemistry

A 14.5-L tank is filled with H2 to a pressure of 2.00 102 atm. How many balloons (each 2.00 L) can be inflated to a pressure of 1.00 atm from the tank? Assume that there is no temperature change and that the tank cannot be emptied below 1.00 atm pressure.
22. ### Chemistry - Gas Laws

Pressurized carbon dioxide inflators can be used to inflate a bicycle tire in the event of a flat. These inflators use metal cartridges that contain 16.0 g of carbon dioxide. At 295 K, to what pressure (in psi) can the carbon dioxide in the cartridge inflate a 3.15-L mountain ...
23. ### Chemistry

A sample of O2(g) is saturated with water vapor at 27 C. The total pressure of the mixture is 772 torr, and the vapor pressure of water is 26.7 torr at 27 C. What is the partial pressure of the O2?
24. ### chemistry

solve for the new pressure when each of the following temperature changes occurs, with n and V constant: b. an aerosol can has a pressure of 1.40 atm at 12 celcius.what is the final pressure in the aerosol can if it is used in a room where the temperature is 35 celcius?
25. ### Chemistry

The total pressure in a flask containing air and ethanol at 257C is 900 mm Hg. If the pressure of the air in the flask is 762 mm Hg, the vapor pressure of ethanol is (blank) mm Hg.
26. ### Chemistry

The total pressure in a flask containing air and ethanol at 257C is 882 mm Hg. If the pressure of the air in the flask is 762 mm Hg, the vapor pressure of ethanol is _____ mm Hg.
27. ### College Chemistry

1 L of N_2_ gas, having a pressure of 2.5 atm, is added 1 L of Ar gas, having a pressure of 3.7 atm, in a sealed, rigid flask. What is the final pressure in the flask?
28. ### Chemistry

a sample of gas of unknown pressure occupies 0.766 L at the temperture of 298k the same sample of gas is than tested under known conditions and has the pressure of 32.6kPa and occupies 0.664 L at 303 k. What is the original pressure of gas
29. ### Physics

pressure of a fluid. calculate the a.) absolute pressure b.) gauge pressure at an ocean depth of 1000m. Assume the density of a sea water is 1024 kg cubic meter and that the air above exerts a pressure of 101.3kPa
30. ### Chemistry

Two Flasks containing the same inert gas are at the same temperature and pressure of 800 mmHg. One flask has volume of 1.0 L and the other, a volume of 2.0 L. Enough volatile liquid is injected into each of the flasks to allow phase equilibrium to be established. No leakage ...
31. ### chemistry

If I contain 3 moles of gas in a container with a volume of 60 liters and at temperature of 400 K, what is the pressure inside the container? Ideal Gas Law: PV=nRT I know I'm given the volume, temperature, and numbers of moles of gas, but how do I know which ideal gas constant...
32. ### Chemistry

A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 3.00 atm. The partial pressure of hydrogen is 0.550 atm and the partial pressure of argon is 615 mm Hg. What is the partial pressure of helium?
33. ### chemistry

A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 2.55 atm. The partial pressure of hydrogen is 0.700 atm and the partial pressure of argon is 705 mm Hg. What is the partial pressure of helium?
34. ### chemistry

a mixture of gases at a total pressure of 95kPa contains carbon dioxide, oxygen, and nitrogen. The partial pressure of the carbon dioxide is 48kPa and the partial pressure of the nitrogen is 24kPa. What is the partial pressure of the oxygen?
35. ### chemistry

A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 2.90 atm. The partial pressure of hydrogen is 0.500 atm and the partial pressure of argon is 760. mm Hg. What is the partial pressure of helium?
36. ### chemistry homework help!!

many gases are shipped in high pressure containers. consider a steel tank whose volume is 42.0L and which contains O2 gas at a pressure of 165atm at 23 degrees celsius. 1.) what mass of O2 does the tank contain? 2.) what volume would the gas occupy at STP? 3.) At what ...
37. ### Chemistry

Need help with #2 & # 3 1. Record the pairs of data for pressure (atm) and volume (mL). Pressure(atm) Volume(mL) 1.000 150 mL 1.154 130 mL 1.364 110 mL 1.667 90 mL 2. Does your experimental data verify Boyle's Law? Explain. 3. What pressure would the gas sample have at a ...
38. ### Chemistry

Sulfur dioxide is used to make sulfuric acid. one method of producing it is by roasting mineral sulfides, for example, FeS2(s) + O2 (g) ---> SO2(g) + Fe2O3(s) (unbalanced). A production error leads to the sulfide being placed in a 950-L vessel with insufficient oxygen. ...
39. ### Chemistry

a gas misture containing N2 and O2 was kept inside a 2.00 L container at a temp of 23.0 degrees C and a total pressure of 1.00atm. The partial pressure of O2 was 0.722atm. How many grams of Nitrogen were present in the mixture?
40. ### Chemistry

Suppose the atmospheric pressure during the experiment was 751 mmHg. The temperature of the water was found to be 23.0 degrees celsius. What is the pressure of the oxygen gas, Po2 that is produced?
41. ### Chemistry

explain why a sealed bag of potato chips "puffs out" (increases in volume) if taken from sea level to a high mountain pass. I know this has to do with pressure.. so is it because the higher up you go, the less pressure there is? Thanks!
42. ### chemistry... confusing!

a scuba diver breathing normal air descend to 100 m of depth, where the toal pressure is 11 atm. What is the partial pressure of oxygen that the diver experiences at this depth? I know that at 100m that a diver would have to breathe Heliox, meaning that the air in the tank is ...
43. ### chemistry urgent

a mixture of NO, CO2, and O2 gases has a total pressure of 2.5x10^3 torr. if the partial pressure of NO is 800 torr and CO2 is 600 torr, what is the partial pressure of O2? Dr. Bob. Please help
44. ### Chemistry

What is the vapor pressure at 23 degree C of a solution of 1.20g of naphthalene, C10H8 in 25.6 g of benzene, C6H6? The vapor pressure of naphthalene can be neglected. Calculate the vapor-pressure lowering the solution
45. ### Chemistry

At a depth of 200 meters in Lake Nyos, the pressure of pure CO2, released from a volcanic vent is equal to the water pressure at this depth. P (pascals) = density * g * height. Density= 1000 kg/m^3, g= 9.8m/s^2. Using this Pascal pressure, convert it, and calculate the ...
46. ### chemistry

It decreases? If the air pressure increased, wouldn't that make the diver go down? What happens when you press on the pressure cap? Oh, yeah. So, at night the atmospheric pressure increases and therefore the diver sinks? Can someone help me with this question about a Cartesian...
47. ### heat

if the absolute pressure of a gas is 550.280 kPa, its gage pressure is ? A.101.325kPa b.277.280kPa c.448.955kPa d.651.605kPa Gauge pressure - atmosphericpressure=absolute pressure where atmospheric pressure varies, but standard atmospheric pressure is 101.325kPa NEED ANSWER ...
48. ### Chemistry

The vapor pressure of an unknown substance is given at various temperatures. properties of the substance are: density of solid=1.375g/ml density of liquid= 1.150g/ml. freezing point= 275.0K boiling point=375.0 K How would i calculate the vapor pressure at 150.0K measured at ...
49. ### Chemistry

A chemist is preparing to carry out a reaction at high pressure that requires 36.0 mol of hydrogen gas. The chemist pumps the hydrogen into a 15.5L rigid steel container at 25 degrees Celcius. To what pressure (in atmospheres) must the hydrogen be compressed? What would be the...
50. ### chemistry

a 20.0-L vessel at 700 K initially contains HI (g) at a pressure of 6.20 atm;at equilibrium, it is found that the partial pressure of H2 (g) is .600 atm. What is the partial pressure of HI (g) at equilibrium?
51. ### Chemistry

The total pressure in a flask containing air and ethanol at 257C is 878 mm Hg. If the pressure of the air in the flask is 762 mm Hg, the vapor pressure of ethanol is mm Hg.
52. ### Earth's Dynamic Atmosphere

Air pressure doesn't crush everything underneath it because A. air pressure is hypothetical and not a real force. B. air pressure is strong enough. C. things on earth have learned to withstand the constant pressure. D. air pressure is exerted in all directions. my answer is b.
53. ### chemistry

Condition Pressure Volume Temperature Comment initial 1.0 atm 22.4 L 273 K 1 mole of N2 gas fills the tank. final 3.0 atm 22.4 L 273 K 2 moles of O2 gas have been added to the 1 mole of N2 gas in the tank. Key Questions 7. What was the initial pressure caused by the nitrogen ...
54. ### Chemistry

A 559.0 mL cylinder containing C5H12 at a pressure of 304.0 torr is connected by a valve to 610.0 mL cylinder containing CO2 at 532.0 torr pressure. Calculate the partial pressure (atm) of CO2 when the valve is opened.
55. ### Chem

Would you please tell me if these are right? A sample of helium has a volume of 325 ml and a pressure of 655 mm hg. What will be the pressure if the helium is compressed to 125 ml (t and n are constant) I got 1703 mm of Hg A 75.0 ml sample of oxygen has a pressure of 1.50 atm...
56. ### chemistry

"A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium? What is ...
57. ### engineering

A saturated soil sample under CU test was subjected to a confining pressure of 200 kPa with back pressure (pore pressure) of 50 kPa. What would be the value of pore pressure if the confining pressure was raised to 400 kPa without drainage? If the pore pressure parameter A is 0...
58. ### Chemistry

A 69.4 L cylinder containing C2H6 at a pressure of 570 torr is connected by a valve to 105 L cylinder containing C6H6 at 0.350 atm pressure. Calculate the partial pressure (atm) of C6H6 when the valve is opened.
59. ### chemistry - vapor pressure

the vapor pressure of pure water at 25C is 23.8 torr. determine the vapor pressure (torr) of water at 25 C above a solution prepared by dissolving 35g of urea (a nonvolatile, non-electrolyte, MW = 60.0G/MOL) IN 76G of water. answer:21 i just want to know the steps bc im ...
60. ### Chemistry: Partial Pressure

A mixture of 0.166 moles of C is reacted with 0.117 moles of O2 in a sealed, 10 L vessel at 500 K, producing a mixture of CO and CO2. The total pressure is 0.640 atm. What is the partial pressure of CO? Please provide a step by step explanation with the answer so I can ...
61. ### chemistry

In which one of the following processes is ΔH = ΔE? a. 2HI(g) → H2(g) + I2(g) at atmospheric pressure. b. Two moles of ammonia gas are cooled from 325°C to 300°C at 1.2 atm. c. H2O(l) → H2O(g) at 100°C at atmospheric pressure. d. CaCO3(s) → CaO(s...
62. ### college chem

A mixture contains H2 at 600 torr pressure, N2 at 200 torr pressure and O2 at 300 pressure. what is the total pressure of the gases in the system?
63. ### Chemistry

A mixture of H2 and water vapor is present in a closed vessel at 20°C. The total pressure of the system is 755.0 mmHg. Partial pressure of water vapor at 20°C equals 17.5 mmHg. What is the partial pressure of H2?
64. ### Physics

Continuously running exhaust hoods in a university chemistry building keep the inside air pressure slightly lower than outside. A student notices that a 175 N force is necessary to start opening a 1.2 m by 2.3 m door. The door is hinged on one of its 2.3 m vertical sides, and ...
65. ### chemistry(total pressure)

Two cylinders at 27C are connected by a closed stopcock ystem. One cyclinder contains 2.4 L of hydrogen gas at o.600 atm; the other cylinder contains 6.8L of helium at 1.40 atm. Assume valve take up no room. what is the total pressure when the valve is open ? I don't know how ...
66. ### Physical chemistry

Estimate the vapor pressure of sea water at 20C given that the vapor pressure of pure water is 2.338 kPa at that temperature and the solute is largely Na+ and Cl- ions, each present in about .50 mol/dm^3. I'm pretty sure the formula to use is pj=xjpj'. Where pj' is the vapor ...
67. ### Ap Biology

We performed a lab that studied osmosis in potato cells. We put cylinders of potato into varying molar Sucrose solutions and after recording different types of data were able to find the osmotic and water potential of the sucrose solution and potato cells. One of the questions...
68. ### chemistry

How do intermolecular forces determine the vapor pressure of a liquid? A. A nonpolar compound has a low vapor pressure because of London dispersion forces. B. A compound that can form hydrogen bonds has a low vapor pressure. C. A polar compound has a high vapor pressure ...
69. ### chemistry

A solution is made by dissolving 22.9 g urea (), a nonelectrolyte, in 302 g water. (The vapor pressure of pure water is 23.8 torr at 25°C and 71.9 torr at 45°C.) Calculate the vapor pressure of this solution at 25°C. Vapor pressure = torr Calculate the vapor pressure of ...
70. ### 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 45.0C , the total pressure is 980 mm Hg. The vapor pressure of ethanol at the new temperature...
71. ### physics

The pressure gauge on a tank registers the gauge pressure, which is the difference between the interior pressure and exterior pressure. When the tank is full of oxygen (O2), it contains 10.0 kg of the gas at a gauge pressure of 43.0 atm. Determine the mass of oxygen that has ...
72. ### Chemistry Lab+Help

Okay, basically what we did in the lab was fill up an empty soda can with about 5mL of water, and we had to heat it up to a boiling point. After that we turned the soda can upside down into a beaker with cold water. After a minute or so, the can just snapped in half. I have to...
73. ### college chemistry

a gas is collected over water at a certain temperature. The total pressure is 756 torr. The vapor pressure of water at this temperature is 17torr. The partial pressure of the gas collected is what?
74. ### chemistry

A sample of oxygen gas is collected by displacement of water at 25°C and 1.17 atm total pressure. If the vapor pressure of water is 23.756 mm Hg at 25°C, what is the partial pressure of the oxygen gas in the sample?
75. ### 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 the new temperature ...
76. ### chemistry

Find the a)partial pressure of ethylene oxide and b)the total gas pressure, after 30 hours in a reaction vessel at 415C if the initial pressure of ethylene oxide is 782mmHg. k= 2.05x 10^-4 t(1/2)=56.3 Part A) I converted hours to seconds, and used the formula ln(Pa)t = 108000s...
77. ### Chemistry

150.0 mL flask contains 740. g of N2 at 0°C. What is the pressure in atm. What is the pressure in torr? What is the pressure in psi? I know you have to do: n = grams/molar mass Then PV = nRT R in 0.08206 L.atm/mol.K gives P in atm atm x 760 = p in torr 1 atm = 14.7 psi
78. ### chemistry

Divers know that the pressure exerted buy the water increases about 100kpa with every 10.2 m of depth. This means that at 10.2 m below the surface, the pressure is 201 kpa; at 20.4 m , the pressure is 301 Kpa; and so forth. Given that the volume of a balloon is 3.5L at STP and...
79. ### Chemistry

I have to chane the barometric pressure in my area to ATM. We have to look at the U.S. Weather map that gives the barometric pressure. I live in an area that has shows 1016 for barometric pressure. First is 1016 in millibars or what and secondly how do I convert that to atm so...
80. ### chemistry

A bottle of rubbing alcohol (C3H7OH) from the store is a 70% solution by mass. Determine the total vapor pressure inside the closed bottle. The vapor pressure of the water at room temperature is 24mmHg; the vapor pressure of the volatile rubbing alcohol is 44mmHg.
81. ### physics

if i take a fluid in a container open to the atmosphere and raise its height what happens to the hydrostatic pressure? I thought it would decrease because pressure decreases with altitude but the answer says that it would increase. I just assumed it would be the opposite of ...
82. ### chemistry

A system at equilibrium contains iodine at a pressure of 0.21 and iodine at a pressure of 0.23 . The system is then compressed to half its volume.Find the pressure diiodine of when the system returns to equilibrium.
83. ### Chemistry

A steel tank at 300 K contains 0.285 L of gas at 1.92 atm pressure. The tank is capable of withstanding a maximum pressure of 5.76 atm. Assuming that doubling the kelvin temperature causes the internal pressure to double, a. at what temperature will the tank burst? b. will it ...
84. ### calculus

At a constant temperature, the pressure, P, and volume, V, of a trapped gas have the relationship P equals the quotient of k divided by V , where k is some positive constant. What occurs if the volume is compressed such that V → 0+? The pressure increases without bound. ...
85. ### Chemistry

An 8.07g sample of impure Ag2O decomposes into solid silver and O2(g). If 395mL O2 is collected over water at 25C and 749.2mmHg barometric pressure, then what is the percent by mass of AgO2 in the sample? The vapor pressure of water at 25C is 23.8mmHg. Could someone help me ...
86. ### conceptual chemistry

the density of air at 25dergees C and 1 atmosphere of pressure is about 1.18 g/L. What happens to the dnesity of air as the temperature is increased. When the pressure is incrased?
87. ### chemistry

A rigid ball that contained 25.0 liters of air at 22°C and 6.25 atm pressure was placed in an oven at a temperature of What was the new pressure inside the ball
88. ### Chemistry

A gas occupies a volume of 4.64 x 102 mL at 519.57 mm Hg pressure. What will be its volume, at constant temperature, if the pressure is changed to 764.71 mm Hg?
89. ### chemistry

A gaseous mixture of O2 and N2 contains 34.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 465 mmHg?
90. ### chemistry

A gaseous mixture of O2 and N2 contains 35.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 565 mmHg?
91. ### Chemistry

A gaseous mixture of O2 and N2 contains 37.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 485 mmHg ?
92. ### chemistry

A gas mixture, has a total pressure of 300. Torr and consists of equal masses of Ne and Ar. What is the partial pressure of Ar, in Torr?
93. ### Chemistry

a sample of gas has the pressure of 1120 mmhg and volume of 2.00 L. if the pressure is changed to 0.155 atm calculate the new volume
94. ### chemistry

The temperature of an ideal gas in a 5.00 L container originally at 1.01 bar pressure and 25 °C is lowered to 220 K. Calculate the new pressure of the gas.
95. ### chemistry

A sample of oxygen occupies 1.00 L. If the temperature remains constant and the pressure on oxygen is decreased to one-third the orginal pressure, what is the new volume?
96. ### Chemistry

A sample of helium has a volume of 325mL and a pressure of 655mmHg. What wll be the pressure if the helium is compressed to 125mL (T constant)?
97. ### chemistry

The pressure of the earth's atmosphere at sea level is 14.7 lb/in2. What is the pressure when expressed in kg/m2? (2.54 cm = 1 in., 2.205 lb = 1 kg) 2.62×102 kg/m2 5.02×104 kg/m2 4.30×10-3 kg/m2 2.09×10-2 g/m2 1.03×104 kg/m2
98. ### Chemistry

A mixture containing 235 mg of Helium and 325 mg of neon has a total pressure of 453 torr. What is the partial pressure of Helium
99. ### Chemistry -need help in solving problem

The solubility of a gas at 7.0 atm of pressure is 0.52 g/L . How many grams of the gas would be disolved per 1.0 L if the pressure increased 40 percent?
100. ### phyiscal chemistry

Moving from solid to liquid by changing the pressure, so what happend if u decrease the pressure on a solid at constant temperature?