osmotic pressure chemistry

10,993 results, page 15
  1. college

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

    asked by sharon on October 11, 2010
  2. chemistry

    what is the purpose of using an ice bath in organic chemistry when isolating the final product?

    asked by Denaiel on November 27, 2016
  3. 8th grade

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

    asked by Aaron on November 18, 2008
  4. AP CHEMISTRY

    Could someone please tell me where to find the 2008 AP Chemistry Multiple Choice for FREE ONLINE? Thank You in advance!

    asked by DAN on May 1, 2012
  5. chemistry

    answers to latenite labs chemistry lab#9 stoichiometry by loss of CO2

    asked by Anonymous on January 19, 2012
  6. Chemistry

    Consider an ideal gas encloesd in a 1.00 L container at an internal pressure of 10.0 atm. Calculate the work, w, if the gas expands against a constant external pressure of 1.00 atm to a final volume of 20.0 L. w = ____ J now calculate the work done if this

    asked by Eric on February 9, 2012
  7. chemistry

    I did a lab in chemistry in which 15-mL jumbo Beral pipets with acetone was heated in boiling water until all of the liquid evaporated. Then the pipets were placed into room temperature water so that the evaporated liquid turns into condensed vapor. The

    asked by Jerry on September 25, 2008
  8. chemistry

    The half-life of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b. the reaction is first order c. the reaction is second order d. the reaction starts out

    asked by elvis on February 19, 2012
  9. chemistry

    The half-life of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b. the reaction is first order c. the reaction is second order d. the reaction starts out

    asked by elvis on February 19, 2012
  10. boiling point

    You are in a mountain range with atmospheric air pressure of 520 mmHg, and you wish to boil some eggs. What is the approximate boiling point of the water at this air pressure?

    asked by Anonymous on April 9, 2012
  11. Physics

    a cylinder of gas is at a room temp (20 c) the air conditioner breaks down and the tempture rises to 58c what is the new pressure of the gas relative to its initial pressure?

    asked by Dee on July 30, 2013
  12. Science

    A fire breaks out and increases the Kelvin temperature of a cylinder of compressed gas by a factor of 1.4. What is the final pressure of the gas relative to its initial pressure?

    asked by KeKe on October 4, 2012
  13. Chemistry

    A sample of argon has a pressure of 1.021 atm at a temperature of 89.4 degC. Assuming that the volume is constant, at what temperature will the gas have a pressure of 1016.56 mmHg

    asked by Anonymous on February 10, 2014
  14. Chemistry

    You are in a mountain range with atmospheric air pressure of 520 mmHg , and you wish to boil some eggs. What is the approximate boiling point of the water at this air pressure?

    asked by Steph on October 4, 2011
  15. General Chemistry

    If the pressure is 748 mmHg, and if h= 35mm, what is the pressure of the gas, expressed in atm, If the substance in the tube is oil having a density of 0.788 g/mL? The density of mercury is 13.6 g/mL.

    asked by Sim on October 26, 2014
  16. Statistics

    Suppose systolic blood pressure (the higher of the two blood pressure readings) of a large group of individuals is normally distributed. If the mean is 122 and the standard deviation is 20, then

    asked by JOHN on October 9, 2016
  17. Physics

    HELP!!! Consider an airplane with a total wing surface of 140 . At a certain speed the difference in air pressure below and above the wings is 3.0 of atmospheric pressure.Find the lift of the airplane

    asked by Ericca on April 9, 2013
  18. chemistry

    A 3.50L sample of neon gas has a pressure of 0.950 atm at 20 degrees C. What would the volume be if the pressure increased to 1.50 atm and the temperature remained constant?

    asked by sun on April 28, 2015
  19. chemistry

    A 10L flask at 298K contains a gaseous mixture of CO AND CO2 at a total pressure of 4atm.if 0.20 mole OF CO is present ;find the partial pressure of CO and that of CO2

    asked by Nanayaw on November 9, 2015
  20. 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 at 287K is 12mm of Hg]

    asked by Mayank on June 30, 2012
  21. Chemistry

    A sample of argon has a pressure of 1.021 atm at a temperature of 89.4 degC. Assuming that the volume is constant, at what temperature will the gas have a pressure of 1016.56 mmHg

    asked by Anonymous on February 10, 2014
  22. chemistry

    What is the effect of the following on the separation of the mixture? a. A soluble, nonvolatile impurity b. a decrease in barometric pressure c. an increase in barometric pressure d. rapid heating rate

    asked by Anonymous on October 7, 2010
  23. science

    one mole of an ideal gas is allowed to expand isothermally at 29.3 degree celsius from a volume of 4.0 litres and pressure of 5.0 atm to a volume of 10.0l and pressure of 2.0atm

    asked by dennis on January 4, 2017
  24. Chemistry

    Calculate the pressure in atmospheres in the ocean at a depth of 3.20 km assuming the constant density of sea water in the water column is 1.10 g/mL. The atmospheric pressure is 1.00 atm.

    asked by Austin on February 8, 2018
  25. Chemistry

    A sample of Argon gas at standard pressure occupies 1000 mL. At constant temperature, what volume does the gas occupy if the pressure increases to 800 mm Hg?

    asked by Jessie on November 14, 2011
  26. CHEMISTRY

    At 25°C and 730 mm pressure,380 ml of dry oxygen was collected.If the temperature is constant ,what volume will the oxygen occupy at 760 mm pressure ? ANSWER- 365ml

    asked by Tanya on March 22, 2015
  27. jordan high

    A sample of a gas at 0.63 atm occupies a volume of 324 mL. If the temperature remains constant, what will be the new pressure if the volume increases to 124 mL? new pressure=_____atm

    asked by Anonymous on April 10, 2011
  28. Chemistry

    Thirty feet of water exert a pressure of 1 atm. Calculate the pressure (in kPa) exerted on a diver at a depth of 50 feet on a standard day.

    asked by Victor on April 9, 2017
  29. Chemistry

    A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25°C. If it is placed in a freezer at -8°C, what is the new value for its internal pressure (in atmospheres)? I did this but got a negative number that wasn't correct

    asked by Brandon on November 2, 2012
  30. Chemistry

    If a sample of gas occupies 2.1 ml at a pressure of 896 torr, what volume (ml) will it occupy at a pressure of 316.8 torr. I really need an answer, but also please show me how to work this problem.

    asked by Linzy on March 25, 2013
  31. Chemistry 105

    A sample of nitrogen gas in a 1.86-L container exerts a pressure of 1.32 atm at 20 C. What is the pressure if the volume of the container is maintained constant and the temperature is raised to 354 C?

    asked by JULIE on October 23, 2011
  32. Chemistry

    Helium gas is added to a 2.00 L container at 23 degrees Celsius containing Neon and Argon with a pressure of 725.3 mm Hg, what is the mass of Nitrogen added if the pressure is increased by 50%.

    asked by Louis on September 19, 2011
  33. Physics

    How high (in meters) would the water rise in the pipes of a building if the water pressure gauge shows the pressure to be 252 kPa at ground level?

    asked by Anonymous on May 22, 2016
  34. science

    Determine what pressure - high or low - exists at sea level at these latitudes: 90 N, 60 N, 30 N, 0 , 30 S, 60 S, and 90 S. Describe where the horse latitudes are, what the pressure and wind conditions are there, and why they have this strange name

    asked by jennifer on February 22, 2008
  35. chemistry

    A sample of chlorine gas is collected by water displacement at 23C. If the atmospheric pressure is 751 torr, what is the partial pressure due to the chlorine?

    asked by Jo on March 14, 2013
  36. chemistry

    A gas sample contained in a cylinder equipped with a moveable piston occupied 300.0 mL at a pressure of 2.00 atm. What would be the final pressure if the volume were increased to 500.0 mL at constant temperature? Answer should include units.

    asked by Kyra on February 19, 2016
  37. Pressure

    Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 750mmHg and a temperature of 23∘C. What would the pressure be if the can

    asked by Chemistry on April 29, 2015
  38. Chemistry

    132. Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if

    asked by stacy on October 5, 2011
  39. Chemistry

    A mixture of hydrogen and oxygen gas has pressure of 1.60 atm. Partial pressure of oxygen is 304 mmHg atm, what is the partial pressure of hydrogen?

    asked by Sandra on November 9, 2010
  40. ap chemistry

    1.95 mol of an ideal gas at 300 K and 3.00 atm expands from 16 L to 28 L and a final pressure of 1.20 atm in two steps: (1) the gas is cooled at constant volume until its pressure has fallen to 1.20 atm, and (2) it is heated and allowed to expand against a

    asked by cheri on October 31, 2012
  41. physical science

    A Weather balloon carries instruments that measure temperature, pressure, and humidity as it rises through the atmosphere. Suppose such a balloon has a volume of 1.2 m3 at sea level where the pressure is 1 atm and the temperature is 20oC. When the balloon

    asked by maria on October 5, 2012
  42. chemistry

    If a gaseous mixture is made of 2.37 g of He and 2.73 g of Ne in an evacuated 1.19 L container at 25°C, what will be the partial pressure of each gas and the total pressure in the container?

    asked by Kam on March 7, 2014
  43. chemistry

    if .55 grams of a gas dissolves in 1 liter of water at 20 kPa of pressure, how much will dissolve at 110 Kpa of pressure?

    asked by Anonymous on March 29, 2011
  44. chem

    at 40 degree C , the vapour pressure of water is 55.3 mm of hg. calculate the vapour pressure at same temp. of 10%aques solution of urea??

    asked by niki on June 7, 2011
  45. chemistry

    equilibrium pressure at 731 K for the reaction H2+I2-2HI initially the mixture contains 0.08592 each of H2 and I2 and 1.0atm.what is the pressure of HI at equilibrium?

    asked by christine on July 10, 2012
  46. chemistry

    A constant pressure tank is filled with air at 16.7 Atm at 24C it warms to 65C, what is the tank pressure

    asked by Arde on November 8, 2012
  47. chemistry

    water has a vapour pressure of 23.76 torr at 25C.what is the vapour pressure of a solution of sucrose ,if its mole fraction is 0.25?

    asked by sumie on June 14, 2012
  48. Chemistry

    A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25°C. If it is placed in a freezer at -8°C, what is the new value for its internal pressure (in atmospheres)?

    asked by Brandon on November 2, 2012
  49. chem

    For a mixture of two gases, consisting of 1.00 mol of N2 and 1.00 mol of CF4, at a total pressure is 2.04 atm, what is the partial pressure of N2?

    asked by marl on June 28, 2011
  50. chemistry

    A 200.0 mL flask contains 1.03 mg of O2 and 0.41 mg HE at 288K. Calculate the partial pressure of oxygen and helium in the flask. What is the total pressure?

    asked by Henry on August 4, 2011
  51. college physics

    If 61.9 L of oxygen at 17.7 degrees C and an absolute pressure of 1.55 atm are compressed to 46.4 L and at the same time the temperature is raised to 49.3 degrees C, what will the new pressure be?

    asked by Anonymous on May 2, 2010
  52. AP Chemistry

    Equal masses of Ne and Ar are placed in a rigid, sealed container. If the total pressure in the container is 1.2 atm, what is the partial pressure of Ar?

    asked by Elizabeth on November 6, 2013
  53. chem

    A pressure cooker with a volume of 6 L is filled with 27 grams of water and heated to 390.2 K. What is the pressure (atm) in the cooker?

    asked by laura on December 6, 2011
  54. Chemistry

    A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) B (g) + C (g)

    asked by Ash on October 19, 2015
  55. Chemistry

    A 120. mL sample of a gas is at a pressure of 1.50 atm. If the temperature remains constant, what will be its volume at 3.50 atm of pressure?

    asked by Ivy on December 6, 2010
  56. Chemistry

    A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) B (g) + C (g)

    asked by Ash on October 18, 2015
  57. Chemistry

    Find molality of a solution containing non - volatile solute if its vapour pressure is 2% below the vapour pressure of pure water

    asked by Jashan Gill on February 1, 2013
  58. Science

    Fill in the blanks...Air masses MOVE from areas of ______ pressure to areas of_________ pressure.

    asked by Matt on May 30, 2008
  59. chem

    A pressure cooker with a volume of 6 L is filled with 27 grams of water and heated to 390.2 K. What is the pressure (atm) in the cooker?

    asked by laura on December 5, 2011
  60. Chemistry

    A gas is bubbled through water at a temperature of 30°C and at an atmospheric pressure of 100.2 kPa. What is the pressure of the dry gas?

    asked by jinal on March 28, 2016
  61. chemistry

    a quantity of gas is collected over water at 15C. The manometer indicated a pressure of 24.0kPa. what would be the pressure of the dry gas?

    asked by garrett on February 24, 2012
  62. Science

    You know that a gas in a sealed container has a pressure of 111kPa at 23 Celsius. What will the pressure be if the temperature rises to 475 Celsius?

    asked by Anna on October 18, 2012
  63. Chemistry

    A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) B (g) + C (g)

    asked by Ash on October 18, 2015
  64. 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.

    asked by kelvin on March 5, 2013
  65. Pure Chemistry

    At 27 degrees celcius, nitrogen has a volume of 650cm^3 under a pressure of 980mmHg. What would be its volume at the same temperature but at a pressure of 760mmhg ?

    asked by Richaj on September 15, 2014
  66. chem

    a sample of gas is compressed from 3.25 l to 1.20 l at constant temperature. if the pressure of this gas in the 3.25 l volume is 100.00 kpa, what will the pressure be at 1.20 l ?

    asked by hasan on April 5, 2010
  67. 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?

    asked by Eileen on February 17, 2011
  68. chemistry

    A gaseous mixture of and contains 35.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 565 ?

    asked by Chrissie on November 8, 2009
  69. Chemistry

    The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure of the gas, assuming constant temperature?

    asked by Soojung on August 29, 2008
  70. 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?

    asked by Lisa on October 18, 2012
  71. Science

    Calculate the partial pressure of co2 and o2 in a mixture of 2 gases consisting of 4.4g co2 and 6.4g o2, with a total pressure of100kpa

    asked by Kathiel on November 15, 2018
  72. Chmistry

    28.31 mL of O2(g) at 1.00 atm pressure dissolve in 1.00 L of water at 25.0 °C. If the pressure of O2(g) is raised to 3.86 atm what will the new concentration of oxygen be expressed in mol/L

    asked by Anonymous on December 1, 2012
  73. chemistry

    A sample of helium has a volume of 235 ml and a pressure of 565 mm Hg. What will be the pressure if the helium is compressed to 215 mL (T constant)

    asked by ree on June 4, 2014
  74. Chemistry

    A 120. mL sample of a gas is at a pressure of 1.50 atm. If the temperature remains constant, what will be its volume at 3.50 atm of pressure?

    asked by Kiesha on December 1, 2010
  75. chemistry

    A pressure cooker with a volume of 6 L is filled with 27 grams of water and heated to 390.2 K. What is the pressure (atm) in the cooker?

    asked by laura on December 6, 2011
  76. chemistry

    If you calculate the density of a gallon of CO2 gas at 27degrees celcius and 0.50 atomic pressure what the atomic pressure be?

    asked by Angela on March 31, 2010
  77. chemistry

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

    asked by Anonymous on February 3, 2012
  78. Chemistry

    The pressure in pressure cooker is 1.90 what will be the temperature

    asked by Humza Alvi on September 24, 2016
  79. 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

    asked by Smushy on December 16, 2014
  80. chem

    Consider the decomposition of ammonium hydrogen sulfide: NH4Hs(s) NH3(g) + H2S(g) In a sealed flask at 25*C are 10.0 g NH4HS, ammonia with a partial pressure of .692 atm, and H2S with a partial pressure of .0532 atm. When equilibrium is established, it is

    asked by Chris on April 10, 2007
  81. trig

    Suppose that Magnus' blood pressure can be modeled by the following function {{{p(t)=83-18sin(71pi*t)}}} Magnus' blood pressure increases each time his heart beats, and it decreases as his heart rests in between beats. In this equation, p(t)is the blood

    asked by joey on March 23, 2014
  82. Physics

    Some hydrogen gas is enclosed within a chamber being held at 200C with a volume of 0.025m^3. The chamber is fitted with a movable piston. Initially, the pressure in the gas is 1.50*10^6 Pa (14.8 atm). The piston is slowly extracted until the pressure in

    asked by Lizzie on August 15, 2011
  83. Physics

    A tropical cyclone with wind speed of 170km/h. "Estimate the air pressure at the eye of the cyclone." Assuming that: *it is a laminar flow of air *wind speed outside the cyclone is zero. * the pressure is at normal atm pressure outside the cyclone.

    asked by Britney on September 22, 2016
  84. Science

    Consider the isothermal expansion of 4.50 mol of an ideal gas at 450 K from an initial pressure of 12.0 bar to a final pressure of 2.75 bar. Describe the process that will result in the greatest amount of work being done by the system and calculate work

    asked by Katherine on January 25, 2011
  85. Science

    A liter(1000cubed)of gas is under a pressure of 80.00cm of mercury . What pressure is needed in order to reduce the original volume of the gas to 600.0cm cubed?

    asked by Jordan on November 19, 2008
  86. Gen Chem 1

    We want to change the volume of a fixed amount of gas from 745mL to 2.30L while holding the temperature constant. To what value must we change the pressure if the initial pressure is 102 kPa?

    asked by Kay on October 26, 2010
  87. Chemistry

    The oxygen gas emitted from an aquatic plant during photosynthesis is collected over water at a temperature of 25 C and a total pressure of 760 torr . what is the partial pressure of the gas?

    asked by Zoe on April 16, 2010
  88. physics

    The pressure under the surface of a liquid increases with depth. Determine the pressure in Newtons per square meter on a lake at a depth of 100 meters (over 300 feet).

    asked by sierra on March 8, 2012
  89. Dr bob please! Chemistry

    hi, i think this prob has to do what you did the last time but how does pressure play appart in this chapter?? What pressure would have to be applied to steam at 325°C to condense the steam to liquid water (ÄH vap = 40.7 kJ/mol)?

    asked by Rachelle on November 29, 2008
  90. 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?

    asked by Anon on October 31, 2014
  91. Chemistry

    Rank the following in order of decreasing vapor pressure, and briefly explain the observed trend in vapor pressure: Acetic Acid Isobutane Acetamide Propanal

    asked by Sarah on December 8, 2015
  92. chemistry

    A 24L sample of a gas at fixed mass and constant temperature exerts a pressure of 3.0 atm. What pressure will the gas exert if the volume is changed to 16L?

    asked by catherine on March 17, 2010
  93. Chemistry-Conversions

    Can you please show me how to set up these conversions (how to do each of these conversions) Question- The pressure of gas is measured ay 550 mm Hg. Calculate the pressure in: a. Torr b. lb/in2 c. atm d. in Hg Can someone other than DrBOB answer this

    asked by KL on May 3, 2012
  94. Chemistry

    What pressure will be exerted by each of the gases in the following mixture if the total pressure of the mixture amounts to 768.8 torr? 0.500 g of hydrogen; 0.245 g of oxygen; 0.335 g of nitrogen. What do I need to do??

    asked by jenny on May 27, 2010
  95. Chemistry-Conversions

    Can you please show me how to set up these conversions (how to do each of these conversions) Question- The pressure of gas is measured ay 550 mm Hg. Calculate the pressure in: a. Torr b. lb/in2 c. atm d. in Hg Can someone other than DrBOB answer this

    asked by KL on May 3, 2012
  96. Chem

    At 850 C, the equilibrium constant Kp for the reaction: C(s)+CO2(g) >< 2CO(g) has a value of 10.7. If the total pressure in the system at equilibrium is 1.000 atm, what is the partial pressure of carbon monoxide.

    asked by Noemi on April 22, 2009
  97. science

    This graph represents the relationship of the pressure and volume of a given mass of a gas at constant temperature. When the pressure equals 8 millimeters of mercury (mmHg), what is the volume, in milliliters (mL)?

    asked by Anonymous on February 9, 2012
  98. Chemistry

    Consider this molecular-level representation of a gas. 5 orange 6 green---> 3 pairs 6 blue If the partial pressure of a diatomic gas is .750 atm, what is the total pressure?

    asked by Sarah on June 21, 2013
  99. physical science

    need help unscrambling these words sperruse ster nertlaim pressure http://www.ssynth.co.uk/~gay/anagram.html rest what is a g-spot Pressure Rest

    asked by nancy on December 13, 2006
  100. chemistry

    A bag of potato chips contains 585 mL of air at 25°C and a pressure of 765 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 434 mm Hg and the temperature is 4.3°C?

    asked by bob the builder on February 10, 2011