# osmotic pressure chemistry

10,949 results, page 14
1. ## chemistry

the vapor pressure of water at 45.0 °c is 71.93 mmhg. Calculate the vapor pressure of a solution of 1.50 m Al(NO3)3 at this temperature (assume 100% dissociation)
2. ## phy

Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.
3. ## Physics

Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.
4. ## chemistry

equal masses of so2 and o2 are kept in a vessel at 27 degrees celcius. the total pressure of the mixture is 2.1atm. the partial pressure of so2 is
5. ## Chemistry

A 1.5 liter flask is filled with nitrogen at a pressure of 12 atmospheres. What size flask would be required to hold this gas at a pressure of 2.0 atmosphere?
6. ## Chemistry

A 12.7 L sample of gas is under a pressure of 740 mm Hg at 20degrees C. What will be the volume of the gas if the pressure increases to 1.00 atm and the temperature drops to 0 degrees C
7. ## chemistry

The pressure of a gas sample in a rigid container is 810.0 mmHg at 22 oC. What is the pressure, in mmHg, at 50 oC? I have a rough idea on how to solve, but which equation do I use?
8. ## Science

What is the final pressure of the gas relative to its initial pressure when there is an increase in Kelvin temperature of a cylinder of compressed gas by a factor of 2.7?
9. ## chemistry

What is the final pressure gas sample that is subjected to a temperature change from 22.0 C to 30.0 C and a volume change from 85.4 L to 37.0 L with an initial pressure 105 kPa?
10. ## Chemistry

A XX-g sample of methane, CH4, is mixed with YY atm of O2 (an excess) in a VV L combustion chamber at 125.0°C. The combustion reaction to CO2 and H2O is initiated and the vessel is cooled back to 125.0°C. What is the final pressure in the combustion
11. ## algebra

the pressure (p) that a 160-pound person's shoe exerts on the ground when walking varies inversely with area (a) of the sole of the shoe. when the shoes have a sole area of 40 sq. in., the pressure is 4 pounds per sq. in. what is the sole area of the sole
12. ## chem

An airplane is pressurized to 650mmHg , which is the atmospheric pressure at a ski resort at 1.30×10^4 altitude.If air is 21 % oxygen, what is the partial pressure of oxygen on the plane?
13. ## chemistry

120 ml of oxygen gas was collected over water at a barometric pressure of 732.0 torr and 23 degrees celsius. what is the partial pressure of the oxygen?
14. ## chemisty

A 3.2 liter sample of gas is at 40.0oC and 1.0 atmosphere of pressure. If the temperature decreases to 20oC and the pressure decreases to 0.60 atmospheres, what is the new volume in liters?
15. ## Chemistry 3A

a sample of nitrogen gas, N2 occupies 3.0L at a pressure of 3.0 atm. what volume will it occupy when the pressure is changed to 0.50 atm and the temperature remains constant?
16. ## chemistry

A sample of gas weighing 9.0 (g) at a pressure of 1 atm occupies a volume of 12.3 L. If the pressure is doubled,what is the resulting volume? (Assume constant temperature)

The volume of a fixed mass of a gas in a cylinder at constant temperature is 300cm,when the pressure is 900mmHg.calculate the new volume when the pressure is 600mmHg.
18. ## Chemistry

Air trapped in a cylinder fitted with a piston occupies 163.1 mL at 1.08 atm pressure. What is the new volume when the piston is depressed, increasing the pressure by 25%?
19. ## science

Air pressure at the surface of a fresh water lake near sea level is about 10^5 N/m2. At approximately what depth below the surface does a diver experience a pressure of 3.0 e5 N/m2?
20. ## Chemical Engg

calculate the final temperature whenHelium (degree of freedom=5/3) at 1 atm pressure is comressed quasi-statically and adiabatically to a pressure of 5 atm.
21. ## Chemistry

A gaseous mixture of and contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 505mmHG ? I am getting .41 * (505/750)= .27 .27 is my answer, is this right.
22. ## Chemistry

Clapeyron equation: dp/dT = ΔS / ΔV My textbook says, for fusion/melting reactions: dp/dT = ΔH / (T ΔV) this implies that T * ΔS = ΔH. I know T * ΔS = q and at constant pressure, that equals H, but the dp/dT reaction is not at constant pressure.
23. ## Chemistry

You have a metal tank containing 74.0 moles of nitrogen gas at a pressure of 15.0 atm. If the pressure is measured at a temperature of 25.0 °C, then the volume of the tank must be ___ liters
24. ## physics

Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.
25. ## physics

Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.
26. ## science

the vapour pressure of pure liquid benzene and toluene are 160mm and 60 mm repectively. calculate the vapour pressure of an equimolar solution at the same temperature?
27. ## chemistry

a mixture of 1.00 grams hydrogen gas and 1.00 grams helium is placed in a 1.00 L container at 27 degrees cesius. Calculate the partial pressure and total pressure
28. ## Chemistry

Why for the ionization of gas,lower pressure is more favoured than high as in the discharge tube? High pressure means more particles to be ionized then what is the reason behind this?
29. ## chemistry

Determine the molarity of in an aqueous solution at equilibrium with air at normal atmospheric pressure. The volume percent of in air is 20.65 Under an pressure of 1.00 , 28.31 of dissolves in 1.00 at 25.
30. ## chemistry

an organic sbstance has an enthalpy of vaporization of 29.0 kl/mol. the compound has a vapor pressure of524 mm HG at 25 C. at what tempurture is the vapor pressure equal to 115mm HG?
31. ## Chemistry

A 2.64 L container is filled with 169 g of argon. (a) If the pressure is 10.0 atm, what is the temperature? ____K (b) If the temperature is 225 K, what is the pressure? What Gas law formula would I use?
32. ## Physical Science

A sample of gas has its number of molecules halved, its Kelvin temperature doubled, and its volume halved. What is the new pressure, relative to the original pressure?
33. ## chem

Air trapped in a cylinder fitted with a piston occupies 162.2 mL at 1.08 atm pressure. What is the new volume when the piston is depressed, increasing the pressure by 25%?
34. ## AP Chem

The vapor pressure of diethyl ether C2H5OC2H5 is greater than the vapor pressure of ethyl alcohol, C2H5OH at any temperature. Which best accounts for this difference?
35. ## physics

4 Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.
36. ## Chemistry

A 2.64 L container is filled with 169 g of argon. (a) If the pressure is 10.0 atm, what is the temperature? ____K (b) If the temperature is 225 K, what is the pressure? What Gas law formula would I use?
37. ## meteorolgy

If the relative humidity is 66% and the vapor pressure is 16 mb, what is the vapor pressure at saturation? Answer: _________ mb (Round to one decimal place, do not include units.)
38. ## Chemistry

A sample of Helium occupies 200 L at 30ºC under a pressure of 841 torr. What is the volume it occupies at standard temprature and pressure (STP)?
39. ## Chemistry

130 cm3 of a gas exact a pressure 750mmhg. Calculate it's pressure if it's volume is increased to 150 cm3 at 35 degree Celsius

200 ml of a gas at 27oC and 1140 Pa pressure is transferred to a vessel of 450 ml capacity. What temperature is to be applied, if the pressure applied is 2000 Pa?

200 ml of a gas at 27oC and 1140 Pa pressure is transferred to a vessel of 450 ml capacity. What temperature is to be applied, if the pressure applied is 2000 Pa?
42. ## Physics

A sample of CO2 occupies a volume of 3.50l at 125 kPa pressure,What pressure would the gas exert if the volume was decreased to 2.00l?
43. ## Chemistry

Would you expect the pressure of a 12.5 mL syringe of natural gas to be the same as the pressure of 12.5 mL of air? In other words, is Boyle's Law dependent on the type of gas that is being measured?
44. ## physical science

An oxygen gas tank has a volume of 8 L and a pressure of 1500 N/m2. If the temperature decreases from 2500 K to 2000 K and its volume increases to 24 L, what is its final pressure?
45. ## science

as the pressure of two crackers are increased the crackers finally break as the pressure subsides. How is this similar to the situation in California along the San Andreas Fault?
46. ## Chemistry

A sample of Helium occupies 200 L at 30ºC under a pressure of 970 torr. What is the volume it occupies at standard temprature and pressure (STP)?
47. ## Chem II

A sample of gas in a 25.0-L containter exerts a pressure of 3.20 atm. Calculate the pressure exerted by the gas if the volume is changed to 45.0-L at constant temperature.
48. ## wwhs

An oxygen gas tank has a volume of 8 L and a pressure of 1500 N/m2. If the temperature decreases from 2500 K to 2000 K and its volume increases to 24 L, what is its final pressure?
49. ## chemistry

A 12 g sample of Ne is added to a container that also holds .78 mol of helium gas. What is the partial pressure of helium if the total pressure, after mixing is 2.43 atm?
50. ## chemistry

a gas with a volume of 4.00 L at pressure of 205kPa is allowed to expand to a volume of 12.0L. what is the pressure in the container if the temp remains constant
51. ## 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?
52. ## physics

A fountain sends water to a height of 149 m. What is the difference between the pressure of the water just before it is released upward and the atmospheric pressure?
53. ## PHYSICS

Calculate the work done against external atmospheric pressure when 1 g of water changes to 1672cm3 of steam. Take the atmospheric pressure as 1.013×105Nm−2
54. ## 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 ?
55. ## chemistry! URGENT!!!

A gaseous mixture of O2 and N2 contains 30.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 365 mmHg?
56. ## chemistry

If methane at a pressure of 3.2 atm and at 21 °C is introduced into a container, the gas be heated to ______°C to increase the pressure to 12 atm. is it 352???
57. ## chemistry

A helium-ﬁlled balloon contains 143 mL of gas at a pressure of 0.99 atm. What volume will the gas occupy at standard pressure?
58. ## PCB

A 298k the vapour pressure of water is 23.75mmhg.calculate the vapour pressure at same tempreature over 5% aqurous solution of urea?
59. ## Chemistry Lab

Hydrogen gas was collected over water in a eudiometer at 26 degrees celcius when the atmospheric pressure was 756 mm Hg. What was the pressure of the H2 gas?
60. ## 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?
61. ## Chemistry 2

An aqueous solution has a vapor pressure of 81.1 at 50 . The vapor pressure of pure water at this temperature is 92.6. What is the concentration of in mass percent?
62. ## Engineering science

A steel cylinder contains an ideal gas at 27°C. The gauge pressure is 140kPa. If the temperature of the container increases to 79°C, what is the new gauge pressure?
63. ## physics

If you dive to a depth of 10m below the surface of a lake, Part A what is the pressure due to the water alone? What is the absolute pressure at that depth?
64. ## 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
65. ## 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
66. ## 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)?
67. ## CHEM

a cyinder with a volume of 5.37 liters contains N2 at a pressure of 2.82 atm at 26 celcius. how many grams Ne must be added to raise the total pressure to 7.5 atm
68. ## 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
69. ## chemristy

A sample of gas occupies 18 L under a pressure of 1.3 atm. What would the resulting valume be if the pressure were increased to 3.9 atm if the temperature did not change?
70. ## chemistry

The total pressure in a 11.3 L automobile tire is 44 psi at 11°C. By how much does the pressure in the tire rise if it warms to a temperature of 29°C and the volume remains at 11.3 L?
71. ## Science

The pressure guage on the steam condenser for a turbine indicates 26.2 in. Hg of vacuum. The barometer reading is 30.4 in. What the absolute pressure in the condenser in psia?
72. ## 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
73. ## Chemistry

A 10 g mass of krypton occupies 15.0L at a pressure of 210 kPa. Find the volume of the krypton when the pressure is increased to 790kPa. Thanks
74. ## chemistry

A sample of gas occupies 29 L under a pressure of 1.3 atm. What would the resulting volume be if the pressure were increased to 3.9 atm if the temprature did not change?
75. ## Partial Pressure- Chemistry

A gaseous mixture of O2 and N2 contains 31.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 445 mmHg?
76. ## 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?
77. ## physics

If the specific gravity of mercury is 13.6 and the atmospheric pressure is 70cm of mercury, what is the total pressure of gas supply in cm of water
78. ## 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.
79. ## 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?
80. ## physics

100cm3 of air at 10 degree centigrade is heated to 80 degrees centigrade.What will be the new volume of the pressure that remains as atmospheric pressure?
81. ## chemistry

2 liquids a and b have vapour pressure of 500 mm hg and 200 mm hg .calculate mole fraction of a at which 2 liquids have equal partial pressure
82. ## 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?
83. ## Chemistry

A sample of gas exerts a pressure of 5.12 atm. What is the pressure of this gas expressed in torr? (3 significant figures, n.nnEn)
84. ## process chemical

The pressure guage on the steam condenser for a turbine indicates 26.2 in. Hg of vacuum. The barometer reading is 30.4 in. What the absolute pressure in the condenser in psia?
85. ## Physics

Water flows at 12 m/s in a horizontal pipe with a pressure of 3.0 x 10 4 N/m2 . If the pipe widens to twice its original radius, what is the pressure in the wider section?
86. ## PHYSICS

Calculate the work done against external atmospheric pressure when 1 g of water changes to 1672cm3 of steam. Take the atmospheric pressure as 1.013×105Nm−2
87. ## College Physics

A monatomic ideal gas with a pressure of 1.39x10^5 Pa and has a volume change of 260 L to a volume of 39.0 L. the second pressure is 3.28x10^6. How much work is done?
88. ## physics

a)a box having mass of 500kg is placed on a horizontal surface.find the pressure exerted on the surface?do not forget to write formula. b)a pond of water filled with water upto 60m.1)write formula to find the pressure of water exerted on the base of
89. ## chemistry

answers to latenite labs chemistry lab#9 stoichiometry by loss of CO2
90. ## Last chemistry post

Can someone please reply to my previous post about chemistry preferable DrBob since he was helping me on it, but anyone is fine.
91. ## college

organic chemistry lab and why is water the first choice for recrystallization when all factors are equal?

In chemistry what is the practical applicaiton of scientific principles to solve everyday problems?

94. ## organic chem

organic chemistry lab and why is water the first choice for recrystallization when all factors are equal?
95. ## chemistry

Hi I am in AP Chemistry and I did not take regulars chem so I have never done labs before and was wondering If anyone could give me examples on how to do a lab
96. ## Science repost for help

Sciece (chemistry) - help, Tuesday, September 25, 2007 at 4:32pm what is the particle theory
97. ## Chemistry

Why a model of the atom is crucial to understanding chemistry and in explaining the behavior of matter?
98. ## top ville college

Chemistry What volume of carbon (iv) oxide at s.t.p is evolved when o.5moles of NaHCO3 is heated