osmotic pressure chemistry

10,971 results, page 10
  1. science

    3. Liquefied air (assuming it is only O2 and N2) is kept in a container where pressure and temperature can be controlled. a. What is the maximum temperature at which the mixture exists as a liquid? If this temperature is kept constant, what is the minimum

    asked by haha on March 11, 2014
  2. PHYSICS

    The truck in that example is traveling at 19 m/s. The density of air is 1.29 kg/m3. By how much does the pressure inside the cargo area beneath the tarpaulin exceed the outside pressure?

    asked by Anonymous on November 18, 2015
  3. Chem

    i don't get this ?.......If the weather forecast stated that the pressure is 104.2kpa. then what is the pressure in the atmosphere? and what would a barometer measure in mm of mercury need help please

    asked by Z on January 21, 2009
  4. physics

    Determine the absolute pressure at the bottom of a lake that is 13.3 m deep. The acceleration of gravity is 9.8 m/s 2 and atmospheric pressure is 1.01 × 10 5 Pa . Answer in units of Pa

    asked by Anonymous on February 9, 2012
  5. PLZ HELP MATH

    this is pre calc arithmetic sequence. AT sea lvl pressure is 14.7 psi. It increases by 14.7 at every 30 ft descent. What is pressure at 1000 ft.

    asked by ISOSMEXY on February 14, 2016
  6. Chemistry

    What pressure would be required to compress 7.75litres of hydrogen at atmospheric pressure to 5litres?(1 atom=760mmhg=760 torr)

    asked by Ayomide on September 25, 2018
  7. science

    130cm3 of a gas at 20oc excert a pressure of 750mmhg calculate it's pressure if it's volume is increased to 150cm3 at 35oc

    asked by Emmanuel osita on February 3, 2016
  8. chem

    a flask containing 155cm^3 of hydrogen was collected under a pressure of 22.5 kPa. what pressure would have been required for the volume of gas to have been 90.0 cm^3 assuming the same temperature?

    asked by jerson on April 26, 2008
  9. Science

    22g N2, 44g CO2 and 18g of CH4 in contenar if the pressure is 750mm calculated of the partial pressure of each gases

    asked by Suvam das on April 22, 2017
  10. chemistry

    Nitrogen gas with a pressure of 1.3 atm is passed through water at a temperature of 35 degrees celcius. What is the total pressure in the container?

    asked by Meg on April 9, 2010
  11. chemistry

    The vapor pressure of water at 30 Celsius is 31.82 mmHg and the density is 0.9956 g/mL. What is the new pressure after adding enough sorbitol to make a 2.7 m solution?

    asked by mister on March 14, 2010
  12. chem

    The atmospheric pressure at the summit of Mt. McKinley is 554 mm Hg on a certain day. What is the pressure in atmospheres and in kilopascals? What are the conversions or formulas for this problem??

    asked by hannah on November 18, 2008
  13. physics

    how tall must a water filled manometer be to measure blood pressure as high as 300 mm Hg? what do i use for pressure, density and height?

    asked by Help! on December 13, 2012
  14. Physics

    At one point in a pipeline, the water's speed is 3.00 and the gauge pressure is 4.00×104 . Find the gauge pressure at a second point in the line 11.0 lower than the first if the pipe diameter at the second point is twice that at the first. I've been

    asked by Steph on January 30, 2010
  15. Algebra

    The function p(d)=1+d/33 gives the pressure, in atmospheres (atm), at a depth d in the sea (d is in feet). Note that p(0)=1 atm, p(33)=2, and so on. Find the pressure at 100 feet. The pressure at 100 feet is ___? atm. (Type an integer or a simplified

    asked by Studet5 on February 7, 2014
  16. physics

    A 45 m/s (100 mph) wind blows across the top of a flat-roofed house. Calculate the net force on the roof due to the pressure differential from inside the house to the outside. Assume that the pressure in the house is atmospheric pressure and that the roof

    asked by badgurl on January 6, 2013
  17. chemistry

    Under the appropriate conditions, NO forms NO2 and N2O: 3NO(g) N2O(g) + NO2(g) Use the values for delta G naught for the following reactions to calculate the value of Kp for the above reaction at 500.0 C 2NO(g) + O2(g) 2NO(g) delta g=-69.7 kJ 2N2O(g)

    asked by Victoria on November 5, 2012
  18. 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

    asked by mae on April 18, 2014
  19. Chem

    A carless chemistry student pours 200 grams of methanol, a flammable substance into the sink. Another careless chemistry student causes the bad situation to get even worse by dropping a lit match into the sink. The metanol burns completely with 300 grams

    asked by Sara on September 6, 2015
  20. math

    Air pressure at sea level is 30 inches of mercury. At an altitude of h feet above the, air pressure, P, in inches of mercury, is given by, P =30e^(-3.23x10-5h) a)Find th equation of the tangent line at h=0. b)A rule of thumb is given by travelers is that

    asked by farjana on August 7, 2015
  21. science

    A piston pump containing 2 liters of nitrogen gas at 3000 psia (absolute) pressure empties its entire contents into a 10 liter pressure container. Before the transfer of gas the 10 liter container already contained nitrogen gas at 100 psia (absolute)

    asked by Stephanie on February 24, 2012
  22. 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?

    asked by Katlen on December 3, 2015
  23. Chem

    A 150.0 mL cylinder containing CO at a pressure of 9.50 atm is connected by a valve to 9500 mL cylinder containing B5H9 at 2280 torr pressure. Calculate the partial pressure (atm) of B5H9 when the valve is opened.

    asked by noclueboo on April 16, 2011
  24. Math

    The pressure exerted by a certain liquid at a given point varies directly as the depth of the point beneath the surface of the liquid. The pressure at 30 meters is 80 newtons per square centimeter. What pressure is exerted at 50 meters?

    asked by Kara on February 21, 2014
  25. chemistry

    what topics are under periodic chemistry?

    asked by Elikem on September 6, 2014
  26. AP CHEMISTRY

    Someone please answer my question below in AP CHEMISTRY.

    asked by HELP PLEASE on March 19, 2012
  27. Chemistry

    What is weighted average in chemistry?

    asked by Eman on October 11, 2009
  28. previous chemistry.

    can some one reply to my last chemistry post? thanks.

    asked by Chopsticks on January 26, 2009
  29. PLZ look at Chemistry Questions!!!

    No chemistry questions are getting answered =(

    asked by Chemistry! on December 6, 2010
  30. chemistry

    Chemistry Suspension Examples...]

    asked by Chemistry Suspension Examples...] on September 9, 2008
  31. science

    write aout chemistry

    asked by bhawana bhusal on July 16, 2015
  32. chemistry

    Abstract 4 chemistry of starch

    asked by Falayi on March 19, 2011
  33. Biology

    Why do you you need to perform dilution(s)in chemistry?

    asked by Anonymous on August 27, 2008
  34. chemistry

    which topics are under periodic chemistry II?

    asked by Elikem on September 4, 2014
  35. Research paper topics

    I NEED TOPICS AVOUT CHEMISTRY !

    asked by Vanessa on March 31, 2009
  36. physics

    What model is the basis for chemistry?

    asked by kenah on May 6, 2008
  37. unt

    chemistry ---- 77=25 to the x power. Can anyone assist.

    asked by dylan on September 2, 2017
  38. CHEMISTRY

    WHAT RELATION DOES CHEMISTRY HAVE TO ART?

    asked by RYAN on February 21, 2009
  39. Drbob222

    Can you please help me with some questions I have on my Chemistry lab?

    asked by Mandy on November 28, 2010
  40. Please Help

    Can someone please help with the chemistry problems? I need them to study.

    asked by Russel on October 7, 2013
  41. DrBob222

    I really need help on these chemistry problems. Can you please help me work them. Please?

    asked by Help please on April 6, 2010
  42. Chemistry

    What are the parts of a calorimeter used in chemistry?

    asked by Anonymous on October 10, 2014
  43. chemistry

    Chemistry Suspension Examples...

    asked by Chemistry Suspension Examples... on September 9, 2008
  44. Geography

    What is the relation between geography and chemistry

    asked by RUTH on October 19, 2011
  45. Chemistry

    Road map in chemistry ?

    asked by Rodjie on November 30, 2017
  46. chemistry

    A 828 mL sample of NO2 gas is at STP. If the volume changes to 598 mL and the temperature changes to 12ºC, what will be the new pressure in atmospheres? new pressure=_____atm

    asked by Anonymous on April 10, 2011
  47. 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

    asked by Man Singh Chouhan on October 30, 2015
  48. chemistry

    a rigid container of O2 has a pressure of 340 kPa at a temperature of 713 k what is the pressure at 273 k? show work i dont know but i think formula for it is T1/P1=T2/P2 and that's all I know

    asked by help pls!!!!!!!! on May 25, 2018
  49. Physics

    A cook puts 7.20 g of water in a 2.00-L pressure cooker that is then warmed to 530°C. What is the pressure inside the container? (Assume room temperature is 20°C.)

    asked by Josie on June 22, 2013
  50. pressure

    determinr the liquid andabsolute pressure at a depth of 4min aswimmining poolgiven that the atmospheric pressure is approximately 101 kPa

    asked by Anonymous on March 30, 2012
  51. chem

    A 250 mL sample of oxygen is collected over water at 25 degrees Celcius and 760.0 torr pressure. What is the pressure of the dry gas alone?

    asked by joey on February 3, 2010
  52. Science

    Why is is it important to place your arm in a horizontal position rather than letting it hang down at your side when you take your blood pressure? Does everyone's heart create the same pressure? Why or why not?

    asked by Jake on January 12, 2008
  53. math

    Find the pressure exerted by the atmosphere on a car window which is 30 cm tall and 40 cm wide if atmospheric pressure is 101,000 Pa. (Remember that a Pa = N/m2)

    asked by Anonymous on April 27, 2017
  54. Mass Transfer

    Solution of methanol and ethanol are substantially ideal. (a) Compute the vapour-liquid equilibria for this system at 1 and at 5 atm abs pressure, and plot xy and txy diagrams at each pressure (b) For each pressure compute relative volatilities , and

    asked by RHS on April 8, 2014
  55. 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.

    asked by Nancy on September 27, 2013
  56. math

    1 + d/33 gives the pressure in the atmosphere at the depth of the sea. the pressure at 40 feet is?

    asked by scooby9132002 on June 14, 2009
  57. Physics

    What is the gauge pressure if the absolute pressure is 321 atm?

    asked by Lance on May 7, 2018
  58. Physics

    What is the absolute pressure if the gauge pressure is 100 kPa?

    asked by Lance on May 7, 2018
  59. Physics

    The air pressure in a tire is 2.38 atm. What is this pressure in kilopascals?

    asked by A.C. on April 8, 2014
  60. Chemistry

    A mixture of 6.50 g He and 37.0 g Ne has a pressure of 610. mm Hg. What is the partial pressure of each of the gases?

    asked by Chantz on November 30, 2010
  61. chemistry

    A mixture of 8.00 g He and 26.5 g Ne has a pressure of 820. mm Hg. What is the partial pressure of each of the gases?

    asked by rose on November 30, 2010
  62. Physics

    What is the gauge pressure if the absolute pressure is 400 kPa?

    asked by Lance on May 7, 2018
  63. physics

    If the systolic blood pressure is 120mmHg, what is the pressure in lb/in^2 and in pascals?

    asked by Manilyn on October 23, 2016
  64. health

    List sources of internal pressure and external pressure

    asked by Alexandra on June 3, 2016
  65. chemistry

    A particular gas has a pressure of 1614 torr. This pressure is equivalent to

    asked by Anonymous on December 5, 2011
  66. 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

    asked by Hannah on May 19, 2010
  67. 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

    asked by billy bob j on April 17, 2008
  68. PHYSICS

    The pressure and volume of an ideal monatomic gas change from A to B to C. From A to B, volume remains 0.400 and pressure rises to 4.00x10^5. From B to C, volume changes from 0.400 to 0.200 while pressure remains the same. There is a curved line between A

    asked by Coffee on December 1, 2015
  69. Subliming a substance

    Question: A substance has a vapor pressure of 50 mmHg at the melting point (100C). Describe how you would experimentally sublime that substance. My answer: I would put the substance in a sidearm test tube apparatus, put ice in the smaller tube and apply

    asked by Sheryl on November 14, 2006
  70. 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

    asked by Sara on January 17, 2013
  71. chem

    The total pressure in a flask containing air and ethanol at 257C is 845 mm Hg. If the pressure of the air in the flask is 762 mm Hg, the vapor pressure of ethanol is ? mm Hg.

    asked by matt on January 31, 2008
  72. 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?

    asked by robert on March 31, 2011
  73. 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?

    asked by Devin on May 8, 2014
  74. 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.

    asked by Vy on February 1, 2008
  75. Algebra 2

    Find the A) Constant of Variation, B) the Equation of the Variation, and the C) the Solution The volume V of gas varies inversely to the pressure P. The volume of a gas is 200 cm^3 under pressure of 32 kg/cm^2. What will be its volume under pressure of 40

    asked by Nate on February 15, 2018
  76. science

    A 2.5L flask contains 0.25mol each of so2 and n2 gas at 27 ° c. calculate the partial pressure exerted by each gas and also the total pressure exerted by each gas and the total pressure. name the law on which it is based

    asked by Hafeeza on November 9, 2015
  77. 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

    asked by Lynn on November 30, 2010
  78. Chemistry

    In which direction will the net reaction proceed X(g)+Y(g)Z(g) Kp=1.00 at 300k for each of these sets of initial conditions? a) [X]=[Y]=[Z]=1.0 m net reaction goes to the left net reaction goes to the right reaction is at equilibrium I chose 3 for a. b)

    asked by Anon on February 6, 2013
  79. 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

    asked by Natasha on February 7, 2014
  80. static

    The coefficient of correlation between the age and blood pressure of a sample of 8 persons was found to be +0.8, the average age is 50 years and average blood pressure is 60. Their standard deviations were 5 and 10 respectively. a) Obtain the two

    asked by moon on January 3, 2016
  81. Statistics

    The coefficient of correlation between the age and blood pressure of a sample of 8 persons was found to be +0.8, the average age is 50 years and average blood pressure is 60. Their standard deviations were 5 and 10 respectively. a) Obtain the two

    asked by Sara on January 3, 2016
  82. Chemistry

    Chemistry equilibrium? Consider the reaction 2NO(g) + O2(g) = 2NO2(g) at 430C an equilibrium mixture consists of 0.020 mole of O2, 0.040 mole of NO, and 0.96 mole of NO2. Calculate Kp for this reaction given that the total pressure is 0.20 atm. I used

    asked by Ashley on October 17, 2010
  83. Mechanics

    In a direct acting pressure relief valve, 64 bar pressure is acting on the conical dart seating area and the dart is kept closed by a spring force of 50 kg opposing the pressure. (5) a) Determine the bore diameter on the seat. b) What will the spring force

    asked by Tony on August 22, 2013
  84. Hydraulics

    In a direct acting pressure relief valve, 64 bar pressure is acting on the conical dart seating area and the dart is kept closed by a spring force of 50 kg opposing the pressure. (5) a) Determine the bore diameter on the seat. b) What will the spring force

    asked by Skip on February 19, 2015
  85. chemistry

    A gaseous mixture at a total pressure of 1.50 atm contains equal molar amounts of He, Ne, and Ar. At constant temperature CO2 gas is added to the mixture until the total pressure is 3.00 atm. Which of the following is a correct statement concerning partial

    asked by Sam on April 18, 2008
  86. Chemistry

    At what initial concentration would a solution of acetic acid (ka=1.8x10^-5) be 2% ionized? Thanks Responses Chemistry - DrBob222, Thursday, February 12, 2009 at 10:00pm Let's call acetic acid HAc. Then the ionization is HAc ==> H^+ + Ac^- We will call the

    asked by Chemistry - Repost for DrBob222 on February 13, 2009
  87. Chem

    A bicycle tire is filled with air to a pressure of 100 psi at a temperature of 19C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58C. The volume increases by 4%. What is the new pressure of the tire? Convert the temps to

    asked by Mew on September 30, 2006
  88. 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

    asked by Sara on January 17, 2013
  89. Chemistry

    Sulfur trioxide gas, one of the causes of acid rain, is produced in the upper atmosphere when oxygen reacts with sulfur dioxide gas in the reaction shown below: 2SO2(g) + O2(g) 2SO3(g) deltaH0 = -197kJ The gases are placed in a reaction vessel and allowed

    asked by Abbagail on April 6, 2012
  90. garyson

    A person rides up a lift to a mountaintop, but the persons ears fail to pop –that is, the pressure of the inner ear does not equalize with the outside atmosphere. The radius of each ear drum is 0.40×10ˆ-2m. The pressure of the atmosphere drops from

    asked by jhon on December 24, 2011
  91. Chemistry

    A 5.00L reaction vessel contains hydrogen at a partial pressure of 0.588atm and oxygen gas at a partial pressure of 0.302atm. The equation is 2H2(g)+O2(g)-> 2H2O(g). Suppose the gas mixture is ignited and the reaction produces the theoretical yield of the

    asked by Heather on October 2, 2012
  92. CHEMISTRY

    ok i have no idea what a 7 letter word for : force resulting from the collisions of gas particles is... so if u have any ideas to what it could be would be great. thanks kinetic? idk pressure is a force.... pressure is a eight letter word I think someone

    asked by JOE on March 18, 2007
  93. 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

    asked by Chelsey on February 26, 2014
  94. physics

    please help me by showing steps thanks Assuming atmospheric pressure to be 1.01 * 10^5 Pa and the density of sea water to be 1025 kg/m^3, what is the absolute pressure at a depth of 15.0m below the surface of the ocean? thanks again:)

    asked by y912f on February 14, 2009
  95. 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.

    asked by david on July 9, 2010
  96. chem

    i don't get this at all can you please show me how to do this problem: a sample of oxygen occupies 10.0 L under a pressure of 105 kPa. at what pressure will it occupy 13.4 L if the temperature does not change. please help me set it up

    asked by melissa on May 14, 2009
  97. 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.

    asked by david on July 9, 2010
  98. chemistry

    Determine the final pressure of a gas that has an initial pressure of 1.00 atm and is heated from 20 °C to 30 °C. Round to the nearest hundredth. Don't forget the units.

    asked by Izzie on July 18, 2011
  99. chemistry B-11

    A sample of gas in a 10.0-L container exerts a pressure of 565 mm Hg. Calculate the pressure exerted by thrvgas if he volume is changed to 15.0 L at constant temperature.

    asked by Roxana Ramirez on May 12, 2015
  100. Physics

    Assuming atmospheric pressure to be 1.01 x 10^5 Pa and the density of sea water to be 1025 kg/m^3, what is the absolute pressure at a depth of 15.0m below the surface of the ocean? Could you show me how to do this problem? Thank you.

    asked by N. on March 15, 2015