# osmotic pressure chemistry

64,622 results, page 36
1. ## Chemistry

What is the volume occupied by 12.3 g or argon gas at a pressure of 1.17 atm and a temperature of 455K? So...Dr. Bob... PV=nRT 1.17V=(12.3)(.08206)(455K) V=459.25/1.17 V=392.5L ???
2. ## Chemistry

A mixture containing 5 g of H2 and 10 g of o2 is allowed to react in a 15 L rigid container at a constant temperature of 25 C. H2+O2->H2O Once the reaction is complete, what will be the pressure of the excess gas inside the container?
3. ## Bio physics chemistry pre medical

Methane react with steam to form h2 and co. . what volume of h2 can be obtained from 100cmcube of methane at the standard temperature and pressure? ?
4. ## Chemistry

To charge a lead storage battery you must apply a direct current to it. hold a magnet close to it.*** force alternating current through it. increase the pressure on it.
5. ## Bio physics chemistry pre medical

Methane react with steam to form h2 and co. . what volume of h2 can be obtained from 100cmcube of methane at the standard temperature and pressure? ?
6. ## Chemistry

A certain substance has a heat of vaporation 56.21 kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times higher than it was at 361k? I need help in setting the problem: I got 56.21/8.3145j/mol.k(1/T1-1/T2)?
7. ## Chemistry

A 10.00 g sample of He is compressed isothermally from a volume of 61.1 L to a volume 2.00 L at a temperature of 25 °C. Calculate the work done by the gas on the surroundings if the external pressure is 101.325 kPa.
8. ## Chemistry

Given the reaction NH3(g) + O2(g)--> NO(g) + energy, in what direction will the reaction shift if you: a)remove O2 (g) b)increase the pressure by decreasing the volume c)decrease the temperature d)add a catalyst
9. ## Chemistry

The combustion of ethane: 2 C2H6 (g) + 7 O2 (g) ---> 4 CO2 (g) + 6 H2O (g) At the same temperature and pressure, what is the maximum volume in liters of carbon dioxide that can be obtained from 15.9 L of ethane and 52.3 L of oxygen?
10. ## CHEMISTRY

Method for getting correct answer? Thank you! Initially there were equilibrium concentrations of 0.1887 M A, 0.1042 M B. Which of the equations below is correct if the pressure decreased by a factor of 2.40? Use the reaction below. 6A(g) ↔ 5 B(g) a.
11. ## chemistry

A 15.0 g of sample of silver is heated to 100.0 0C and then placed in a constant-pressure calorimeter containing 25.0 g of water at 23.0 0C. The final temperature of the system was measured as 25.0 0C. What is the specific heat of silver?
12. ## Chemistry

If 200 ml of gas held at a constant pressure has a starting temperature of 300 degrees K, and it expands to fill a 300 ml space, what would be the new temp? (I got 454.54) Thanks!
13. ## Chemistry

The heat of vaporization of water at 100C is 40.66 kj/mol find the change in entropy when 5.0 g of water vapor condenses to liquid at 100 C and 1 atm pressure
14. ## Chemistry

What is the final volume of 880. mL of hydrogen gas at 335 mm Hg if the pressure is increased to 735 mm Hg? Assume the temperature and the amount of gas are held constant.
15. ## Chemistry

Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 ∘C. At what temperature does benzene boil when the external pressure is 480torr ?
16. ## Chemistry

Consider the following chemical equation. Cl2(g) + O2(g) → Cl2O3(g) Assuming all gases are at the same temperature and pressure, how many milliliters of oxygen gas must react to give 3.50 L of Cl2O3?
17. ## chemistry

what is the universal gas constant( the R, in the equation PV=nRT) of this question? What is the pressure in a 10.0-L cylinder filled with 0.470 mol of nitrogen gas at a temperature of 329 K?
18. ## ap chemistry

On a hot sunny day in August, the weather- man reports that the barometric pressure is 49 atm atmospheres. How many Pascals is this? Answer in units of Pascals
19. ## Pre Ap Chemistry

A sample of carbon dioxide gas occupies 566 mL at 0.825 atm and 15 ◦C. What will the pressure be at a volume of 834 mL and a temperature of 20◦C
20. ## CHEMISTRY

Method for getting correct answer? Thank you! Initially there were equilibrium concentrations of 0.1887 M A, 0.1042 M B. Which of the equations below is correct if the pressure decreased by a factor of 2.40? Use the reaction below. 6A(g) ↔ 5 B(g) Qc
21. ## Chemistry

a 5.00 Liter tank holds argon gas a 675 kPa and 11C. what would be its pressure if this argon is transferred to a different tanks whose volume is 17.0 liters at 135C?
22. ## Chemistry

When 6.0L of H2 reacts with 2.0L of N2, 4.0L of gaseous product are formed. All volumes of gases are measured at the same temperature and pressure. What is the formula of the product? Hint: Assume all reactants are consumed.
23. ## Chemistry

A mixture of gases collected over water at 14C has a total pressure of 1.198 atm and occupies 72 mL. How many grams of water escaped into the vapor phase?
24. ## Chemistry

a 5.00 Liter tank holds argon gas a 675 kPa and 11C. what would be its pressure if this argon is transferred to a different tanks whose volume is 17.0 liters at 135C?
25. ## Chemistry

If 500 mol of hydrogen gas occupies 5.00L at 25 celsius, what is the pressure in atm? I believe this is Ideal gas law. I can't figure out how to put it in the PV=nRT.
26. ## chemistry quick homework help

A gas occupies 359 mL at 501.4 Torr and 24.1 °C. When the pressure is changed to 441.8 Torr, what temperature is needed to maintain the same volume?
27. ## chemistry

A steel container is filled with 5.00atm of nitrogen, 2.00atm of oxygen, and 0.50atm of argon. What is the total pressure in the vessel and the mole fraction of each gas?
28. ## Chemistry

N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350°C and 2.50 atm pressure
29. ## chemistry

SO2 mixed with O2, 800K is in the 2.00L metal container and it was 1.9atm. The reaction occur and than pressure of container dropped to 1.65atm. How many SO3 was produced?
30. ## Chemistry

To charge a lead storage battery you must apply a direct current to it. hold a magnet close to it. force alternating current through it.*** increase the pressure on it.
31. ## chemistry

Consider the following chemical reaction: 2 KNO3 (s) ------------> 2 KNO2 (s) + O2 (g) What volume, in liters, of O2 at 31.2oC and 2.045 atm pressure can be produced from the decomposition of 54.92 g of KNO3 (FM = 101.1 g/mol).
32. ## chemistry

an ideal gas at 75.0 c and 760 .mm hg is contained in a flexible vessel. Its volume is doubled and the pressure remains.unchanged .determine the temperature of the gas as a consequence of these changes
33. ## Chemistry

a 5.00 Liter tank holds argon gas a 675 kPa and 11C. what would be its pressure if this argon is transferred to a different tanks whose volume is 17.0 liters at 135C?
34. ## chemistry

A hot-air balloon has a volume of 970 L at 28 degrees C . To what temperature must it be heated to raise its volume to 1200 L , assuming the pressure remains constant?
35. ## chemistry

At a particular pressure and temperature, it takes just 2.040 min for a 3.632 L sample of F2 to effuse through a porous membrane. How long would it take for the same volume of UF4 to effuse under the same conditions
36. ## chemistry

Carbon disulfide,CS2, is a volatile, flammable liquid. It has a vapor pressure of 426.6 mmHg at 29.8C and 760.0 mmHg at 46.5C. What is the heat of vaporization of this substance?
37. ## Chemistry

A gas occupies 275 ml at 0°C and 610 Torr. What final temperature would be required to increase the pressure to 760 Torr, the volume being held constant?
38. ## chemistry

The average out door concentration of carbon monoxide ,co at 15 c and 1 atm of pressure is about 900 micrograms per cm^3 . What is this concentration expressed : on ppm scale ? And on the molecules /cm^3scale?
39. ## Chemistry

Methanol, CH3OH a colorless voltile liquid was formerly known as wood alcohol. It boils at 65 degrees C and has a heat of vaporization of 37.4 kJ/mol. What is its vapor pressure at 22.0 degrees C?
40. ## chemistry

A typical air sample in the lings contains oxygen at 100 mm Hg, nitrogen at 573 mm Hg, carbon dioxide at 40mm Hg and water at 47 mm Hg. What is the total pressure on the sample in mm Hg?
41. ## Chemistry

Imagine that you have a 6.00L gas tank and a 3.00L 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 125atm , to what
42. ## PHYSICS

A piece of aluminum (bulk modulus 7.1 x 1010 N/m2) is placed in a vacuum chamber where the air pressure is 0.307 x 105 Pa. The vacuum pump is then turned on and the pressure is further reduced to zero. Determine the fractional change V/V0 in the volume of
43. ## Physics

What is the normal pressure of the atmosphere at the summit of Mt. Everest, 8850m above sea level? (Assume g is constant and that the density of air, ρ, is proportional to the pressure, P, at any height. Use the values at sea level ρ0 = 1.29kg/m3 and P0
44. ## physics

The balloon contains 0.30 {\rm mol} of helium starts at a pressure of 115 {\rm kPa} and rises to an altitude where the pressure is 55.0 {\rm kPa}, maintaining a constant 300 {\rm K} temperature. (A)By what factor does its volume increase? (B)How much work
45. ## science

3. Atmospheric pressure at the top of Mt. Everest is about 150 mm Hg. That is why climbers always bring oxygen tanks. If a climber carries a 12.0 liter tank with a pressure of 35,000 mm Hg, what volume will the gas occupy if it is released at the top of
46. ## Calculus

Air expands adiabatically in accordance with the law PV^1.4=Const. If at a given time the volume is 14 cubic feet and the pressure is 40 pounds per square inch, at what rate is the pressure changing when the volume is decreasing 1 cubic foot per second?
47. ## Physics

A weather ballon is designed to expand to a maximum radius of 20 m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the ballon is filled at atmospheric pressure and 300 K, what is its radius at liftoff?
48. ## Physics

A weather ballon is designed to expand to a maximum radius of 20 m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the ballon is filled at atmospheric pressure and 300 K, what is its radius at liftoff?
49. ## science

3. Atmospheric pressure at the top of Mt. Everest is about 150 mm Hg. That is why climbers always bring oxygen tanks. If a climber carries a 12.0 liter tank with a pressure of 35,000 mm Hg, what volume will the gas occupy if it is released at the top of
50. ## physics

Your town is installing a fountain in the main square. If the water is to rise 20 m above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal to 100,000
51. ## physics

A diesel engine takes in 0.5 moles of air at 20.0„aC and at atmospheric pressure. It then compresses it adiabatically to one twentieth of its original volume. Obtain the final temperature, pressure and volume of the compressed air? which formula should i
52. ## Statistics

Topic: Normal Probability Distribution Question: Assume that blood pressure readings are normally distributed with a mean if 116 and a standard deviation of 4.8. If the 36 people are randomly selected, How do I find the probability that their blood
53. ## physics

The balloon contains 0.30 mol of helium starts at a pressure of 125 kpa and rises to an altitude where the pressure is 55.0 kpa, maintaining a constant 300 {\rm K} temperature. A)By what factor does its volume increase? B)How much work does the gas in the
54. ## CHEMISTRY

Dr Bob Can you confirm please Given a cylinder of fixed volume filled with one mole of Ar gas,which of the following is CORRECT? (assume that all gases obey the ideal gas laws) A: if the cylinder temp. is changed from 20 to 25 deg.C the pressure will
55. ## chemistry

Calculate the Molecular Weight (MW) of a hydrocarbon as if 0.5813 g of this gas completely fills a 250.0 mL flask at a temperature of 24.4 C and pressure of 742.6 mmHg. Show all work and assume ideal behavior.
56. ## Chemistry

When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to -8.000 x 10^3 K. According to the Clausius Clapeyron equation, Hvap is ? kJ/mol.
57. ## Chemistry

How do you solve this: if 24.0 L of O2 burns completely a sample of carbon disulfide, how many grams of sulfur dioxide will be produced at 15 degrees celcius at a pressure of 1.3 atm? (the answer is 45.7 g). CS2 + 3O2 -> CO2 + 2SO2
58. ## Chemistry

When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to -8.000 x 10^3 K. According to the Clausius Clapeyron equation, Hvap is ? KJ/mol
59. ## Chemistry

Suppose that in your experiment you conducted in lab you neglected to account for pressure due to water vapor in your collected sample of hydrogen gas. How, if at all, would this affect your final value of atomic weight of the metal?

1) Which of the following properties of water can be explained using hydrogen bonding arguments? 1. its ability to dissolve most ionic compounds. 2. its high boiling point. 3. its low vapor pressure a) only 1 or only 2 or only 3 b) 1 and 2 only c) 1 and 3
61. ## chemistry

Calculate the amount of energy in the form of heat that is produced when a volume of 3.56 L of SO2(g) is converted to 3.56 L of SO3(g) according to this process at a constant pressure and temperature of 1.00 bar and 25.0 °C. Assume ideal gas behavior.
62. ## Chemistry

A Sample of propane, C3H8, occupies 5.00L at 270C and 309torr. The volume of the canister is changed to 1.85L while the pressure remains constant. What is the Temperature, in K and 0C, of the gas after the change? What would be the setup for this problem?
63. ## chemistry

When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to -9.500 x 10^3 K. According to the Clausius Clapeyron equation, Hvap is kJ/mol.
64. ## Chemistry

A sample of a smoke stack emission was collected into a 1.25L tank at 752 mm Hg and analyzed. The analysis showed 92% CO2, 3.6% NO, 1.2% SO2, and 4.1% H2O by mass. What is the partial pressure exerted by each gas?
65. ## Chemistry

Given that many laboratory gases are sold in steel cylinders with a volume of 43.8 L, What mass (in grams) of argon is inside a cylinder whose pressure is 17810kPa at 24∘C? I've attempted this problem but I'm not getting the correct answer. Please
66. ## chemistry

When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to -1.0500 x 10^4 K. According to the Clausius Clapeyron equation, Hvap is kJ/mol. ?
67. ## Chemistry

Convert a pressure of 23.8 in. Hg into kilopascal. Ok so I looked up kilopascal and it Said 1 Kpa = 1000 pa So I began to set it up like this 23.8 / 29.2 x1000 am I correct Chemistry - DrBob222, Thursday, October 13, 2011 at 1:48pm I don't think that will
68. ## Chemistry

Methanol, CH3OH, is produced on an industrial scale from carbon monoxide and hydrogen. At the temperatures used, gaseous methanol is formed according to the following thermochemical equation: CO(g)+ 2H2(g) <---> CH3OH(g) £H = -90Kj 1. State Le
69. ## Physics

Your town is installing a fountain in the main square. If the water is to rise 14 m (45.9 feet) above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal
70. ## physics

Your town is installing a fountain in the main square. If the water is to rise 16 m (52.5 feet) above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal
71. ## physics

Your town is installing a fountain in the main square. If the water is to rise 26 m (85.3 feet) above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal
72. ## physics

A current I=1A flows along a thin-walled cylinder of radius R=4cm. What pressure in Pascals do the walls of the cylinder experience? Assume that the current is uniformly distributed. Bonus thing to think about: Is this pressure directed inwards or
73. ## physical science

3. Atmospheric pressure at the top of Mt. Everest is about 150 mm Hg. That is why climbers always bring oxygen tanks. If a climber carries a 12.0 liter tank with a pressure of 35,000 mm Hg, what volume will the gas occupy if it is released at the top of
74. ## physical science

3. Atmospheric pressure at the top of Mt. Everest is about 150 mm Hg. That is why climbers always bring oxygen tanks. If a climber carries a 12.0 liter tank with a pressure of 35,000 mm Hg, what volume will the gas occupy if it is released at the top of
75. ## Heat transfer

For a sample of air having 22 degC DBT, relative humidity 30 % at barometric pressure of 760 mm of mercury, calculate the vapour pressure,humidity ratiio,dew point temperature,vapour density,and enthalpy
76. ## science

how do i ansewr this question? An aerosol spray can with a volume of 400. mL contains 2.25 g of propane gas (C3H8) as a propellant (a) If the can is at 31°C, what is the pressure in the can? (b) What volume would the propane occupy at STP? (c) The can's
77. ## science

You are confronted with the following question: One mole of an ideal gas is sealed in a 22.4- container at a pressure of 1 and a temperature of 273 . The temperature is then increased to 305 , but the container does not expand. What will the new pressure
78. ## Fluid Mechanics

I have a question in fluid mechanics...and i need to know the pressure in an air-filled drain? Is it the atmospheric pressure? Thanks in advance
79. ## Algebra II

The barometric pressure in inches of mercury at a height of h feet above sea level is p=30.0e^-kh where k=3.83*10^-5. At what height will the pressure be 10.0 in. of mercury.
80. ## Chem Help!

How do I perform the following conversions of pressure units: 168 torr = What? I also need help with Performing the following conversions of pressure units: 5.0 x 109 Pa = What?

A balloon at contains 0.5 L of gas at a constant pressure of 1.0 atm. If the pressure is increased to 3.0 atm, what will be the volume of the gas?
82. ## Chem

A pressurized can of whipping cream has an internal pressure of 1.035 atm at 28°C. If it is placed in a freezer at -15°C, what is the new value for its internal pressure?in atm
83. ## Physical Science

A cylinder contains a gas with the pressure of 125kpa at a temp. of 200k. What is the temp. of the gas at a pressure of 100kpa?
84. ## chem

what would the temperature inside the pressure cooker beef the vapor pressure of water inside the cooker was 3.08 atm
85. ## PHYSICS

The volume of a gas is 450 mL when its pressure is 1.00 atm. If the temperature of the gas does not change, what is the pressure when its volume is changed to 2.00 L?
86. ## chemistry

A microtube is found to have an ungraduated portion that will contain 0.26 g of water. Upon setting up the experimental apparatus as described in the experiment, a microtube is filled to 0.01 ml with water at 4ºC. At a temperature of 60ºC, the volume of
87. ## Gen Chm II

Determine the pressure-based Keq for the reaction: 2SO2(g) + O2(g)<--->2SO3(g) given that 1.00×10−2 moles of SO2 and 2.00×10−2 moles of O2 were initially placed in a 2.00 L reaction chamber. The chamber contained 7.5×10−3 moles
88. ## chemistry

Which represents the largest pressure? A)five mmHg B)one atmosphere C)one millimeter of mercury D)one hundred pascals E)five pounds per square inch I tried converting them all to mmHg and I think the answer is B, but I just want to make sure.
89. ## chemistry

Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 degrees C. At what temperature does benzene boil when the external pressure is 470 torr?
90. ## chemistry

A flask that can withstand an internal pressure of 2511 torr, but no more, is filled with a gas at 21.0°C and 758 torr and heated. At what temperature will it burst? i used P1/x=P2/T2 and got 69.6 degrees Celsius. what is wrong
91. ## chemistry

a 47.7L sample of a gaseous hydrocarbon, measured at 1.00atm and 25degreesC is burned in excess oxygen, liberating 4.33X10^3 kJ of heat at a constant pressure. what is the identity of the hydrocarbon?
92. ## General Chemistry

A piston has an external pressure of 7.00 atm. How much work has been done in joules if the cylinder goes from a volume of 0.130 liters to 0.650 liters. Express your answer with the appropriate units.
93. ## Chemistry 103

2NiO(s)→2Ni(s)+O2(g) If O2 is collected over water at 40.0C and a total pressure of 739mmHg , what volume of gas will be collected for the complete reaction of 24.18g of NiO?
94. ## Chemistry

When 1 mol of a gas burns at constant pressure, it produces 2424 J of heat and does 6 kJ of work. How do i calculate delta E for this problem? I tried q+w but that didn't work for me. I got the answer wrong.
95. ## chemistry

Calculate the volume of nitrogen gas that will be produced in the air bag of a car when 88,8g of sodium azide is thermally decomposed at 22 C to give the bag a pressure of 1,10 atm
96. ## chemistry

If you are given .060m. sugar (glucose-C6H12O6), .030m. AlCl3 and .025m. NaOH. How do you figur out lowest boiling point and lowest vapor pressure of the given solutions?
97. ## Chemistry

Calculate the mass of nitrogen dissolved at room temperature in an 80L home aquarium. Assume total pressure of 1 atm and mole fraction of .78 for nitrogen
98. ## Chemistry

What is the pressure in millimeters of mercury of 0.0155 mole of He gas with a volume of 206 mL at a temperature of 30 degrees C? I used the ideal gas law and ended up with 1.87 mmHg but it said that was wrong. Please help.
99. ## chemistry

A 150.0 mL flask contains 0.391 grams of a volatile oxide of sulfur. The pressure in the flask is 750 mmHg and the temperature is 22C. Is the gas SO2 or SO3?
100. ## chemistry

Assuming the temperature and pressure are held constant, which of the gas samples has the greatest number of gas particles? Answer 45.0 mL O3 35.0 mL N2 15.0 mL of CO2 25.0 mL of SO3 how would i go about answering this question.