osmotic pressure chemistry

10,993 results, page 12
  1. Plz urgent

    Can anyone please answer my chemistry question i posted quick?

    asked by Mia on February 23, 2013
  2. CHEMISTRY HELP

    how can analytical chemistry help on different fields of sciences and technology?

    asked by Ella on November 26, 2014
  3. college

    here is a chemistry 10 quetion. Convert 35.2mL to hm to third power

    asked by Rhonda on September 15, 2009
  4. CHEMISTRY

    THE DIFFERENT TYPES OF THE FUNCTIONAL GROUP IN ORGANIC CHEMISTRY

    asked by isaac emmen on May 27, 2018
  5. chemistry

    how do you add ph values of neutrals and bases in chemistry?

    asked by amy on October 4, 2007
  6. chemistry

    What is an open and closed sytem refer to in chemistry? thanks!

    asked by Donald on October 16, 2012
  7. Chemistry

    Why is the mole considered an important quality in Chemistry? What does it allow us to do?

    asked by Amy on October 19, 2014
  8. space

    What is the role of chemistry in outer space exploration?

    asked by bev on July 14, 2011
  9. Science

    Kindly help me on simple project topic on chemistry

    asked by Hannah on June 25, 2010
  10. CAN ANYONE HELP?

    I posted my science (chemistry) question and I have received no help and i really need to get this done so can someone please help??

    asked by Anonymous on April 3, 2014
  11. DrBobb222!! Help!!

    Please look at my Chemistry problems again, I reposted them with the constants and such. I am still confused!

    asked by Jordan on September 11, 2012
  12. chemistry project please help really need it

    help me out in choosing a topic for my project it should be anyhow related to chemistry help me please

    asked by aditi on May 23, 2013
  13. math

    underwater pressure can be found using the formula p=L+d/33 where p is the pressure (in atmospheres), and d is the depth of the water in feet. If a scuba diver is experiencing 3.4 atmospheres of pressure, what is the depth of the diver? The L is really

    asked by VERYYY IMPORTANT!!!! on March 6, 2007
  14. chem

    convert a pressure 1.75atm to kpa convert the pressure of 1.75atm to mm Hg convert a pressure of 570 torr to atmospheres

    asked by amie on May 31, 2008
  15. Physics

    One of the proposed mechanisms for the lift of an aircraft is the pressure difference that develops due to the aerodynamic shape of the wings. Higher pressure develops bellow the airplane which lifts it up. Suppose you have a semi-circular wings with

    asked by Al on June 24, 2013
  16. Chem

    At 930 K, Kp = 0.30 for the following reaction. 2 SO2(g) + O2(g)=>2 SO3(g) Calculate the equilibrium partial pressures of SO2, O2, and SO3 produced from an initial mixture in which the partial pressures of SO2 and O2 = 0.51 atm and the partial pressure of

    asked by Opi on November 10, 2014
  17. Algebra II

    The volume of a gas in cubic centimeters, V, varies inversely with the pressure of the gas in liters per square centimeter, p. When the volume of the gas is 16 cm3, its pressure is 20 L/cm2. Find the volume of the gas when the pressure is 2.2 L/cm2.

    asked by kristy on December 16, 2016
  18. Physics

    The air pressure on Pikes Peak in Colorado is approximately 600 millibars. What is the relationship between air pressure at the top of Pikes Peak and at sea level, where air pressure is 1013 millibars?

    asked by mike on June 10, 2014
  19. Algebra 1

    Pressure and volume vary inversely in the idea has law. The pressure exerted by a gas of volume 150cubic inches is 30 p.s.i. Find the pressure exerted by the gas if the volume is decreased to 50cuboc inches

    asked by Pj clancy on May 12, 2016
  20. Science

    The air pressure on Pikes Peak in Colorado is approximately 600 millibars. What is the relationship between air pressure at the top of Pikes Peak and at sea level, where air pressure is 1013 millibars?

    asked by mike on June 10, 2014
  21. chemistry

    HOF-->HF + 1/2O2(oxygen) Half life: 30 minutes If the partial pressure of HOF in a 1.00 L flask is initially 100 mm Hg at 25C, what is the total pressure in the flask and the partial pressure of HOF after exactly 30 minutes?

    asked by Anonymous on March 31, 2010
  22. chemistry

    Posted by Jenni on Monday, December 13, 2010 at 3:32pm. Determine the molarity of nitrate ions in a solution prepared by mixing 25.0 mL of 0.50 M Fe(NO3)3 and 35.0 mL of 1.00 M Mg(NO3)2 Please explain fully do not know where to start? chemistry - DrBob222,

    asked by Jenni on December 14, 2010
  23. chemistry

    Could somebody tell me dose my answer for this question right or wrong for this question.My answer is reverse 2SO2(g) + O2(g) ↔ 2SO3(g) which has Kp = 3.45 x 106 at 600K. In an experiment, SO3 at pressure 125 atm is mixed with SO2 at pressure 0.13 atm

    asked by Mi on March 24, 2017
  24. physics

    A hypodermic syringe is attached to a needle that has an internal radius of 0.303 mm and a length of 3.02 cm. The needle is filled with a solution of viscosity 2.00 10-3 Pa · s; it is injected into a vein at a gauge pressure of 16.1 mm Hg. Ignore the

    asked by ray on March 23, 2013
  25. chemistry

    please can someone help me with these questions? 24) Which represents the largest pressure? A) five mm Hg B) one atmosphere C) one millimeter of mercury D) one hundred pascals E) five pounds per square inch 25) What would be the new pressure if a 400 mL

    asked by brandy on November 9, 2009
  26. Chemistry - Vapor Pressure

    a.)What is the partial vapor pressure of a benzene above solution obtained by mixing 44.7 g benzene, C6H6, and 77.3 g toluene, C6H5CH3, at 25 ∘C? At 25 ∘C the vapor pressure of C6H6 = 95.1 mmHg; the vapor pressure of C6H5CH3 = 28.4 mmHg. b.)What is the

    asked by Anonymous on February 22, 2016
  27. chemistry

    A mixture of gases at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2 is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?

    asked by natasha on July 29, 2008
  28. chemistry

    A mixture of gases at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2 is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?

    asked by kayla on August 4, 2008
  29. Chemistry

    A mixture of gasses at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2, is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?

    asked by Bob on February 23, 2010
  30. Chemistry- partial pressures

    A sample of gas collected over water at 42 degrees C occupies a volume of one liter. The wet gas has a pressure of .986 atm. The gas is dried and the dry gas occupies 1.04 L with a pressure of 1.00 atm at 90 degrees C. Using this information, calculate the

    asked by Dave on January 1, 2007
  31. Chemistry

    Concentration 15.8 mg/L Final Volume 100.0 mL What is the concentration of phosphate in the original lake water sample if the unknown lake water sample in the option has been diluted by taking 25.0 mL of lake water and diluting it to the indicated final

    asked by Anon on December 6, 2012
  32. Chem

    What is the molarity of a solution made by dissolving 4.14 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.) .67137, but that wasn't right. An open-ended mercury manometer is used to measure the pressure exerted by

    asked by Anonymous on December 4, 2012
  33. chem

    Show work 1. How many moles of oxygen will occupy a volume of 2.50 liters at 121.6 kPa and 331 K? 2. An unknown volume of chlorine gas (Cl2) is resting at 127 °C at a of pressure 152.4 kPa. If the gas weighs 191.4 g, what is the volume? 3. A 2.917 mole

    asked by theresa on February 22, 2015
  34. algebra

    The volume of gas varies directly with temperature and inversely with pressure. Volume is 100 m^3 when temperature is 1508 degrees and pressure is 15 lb/cm^2. What is the volume when the temperature is 2508 degrees and the pressure is 20 lb/cm^2?

    asked by ciara on February 12, 2013
  35. Math-Algebra

    The pressure of a gas varies directly as its temperature. IF the pressure of a gas is 200 pounds per square inch (lb/in^2) at a temperature of 65.5 degrees C, what is the pressure of the gas when the temperature is 250 degrees F?

    asked by McKenna Louise on November 11, 2013
  36. Algebra

    Can someone help me understand this? The function p(d)=1+d/33 gives the pressure in the atmosphere (atm) at a depth in the sea (d is in feet) Note that P(0)=1 atm, P(33)=2 and so on find the pressure at 150 feet. The pressure at 150 feet is ? atm?

    asked by Anonymous on June 18, 2008
  37. Chemistry

    You have 1L of an ideal gas at 0 degree celsius and 10 atm pressure. You allow the gas to expand against a constant external pressure of 1 atm, while the temperature remains constant. Assuming, 101.3 J/liter-atm, find q,w,delta E, and delta H in Joules, A)

    asked by John on November 25, 2011
  38. Math

    air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the

    asked by Angelina on March 9, 2015
  39. math

    air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the

    asked by Angelina on March 9, 2015
  40. Chemistry

    I need to calculate the mass of CO2 produced in the reaction of NaHCO3 + HCl Data Mass of NaHCO3 = .05g Mass of system before reaction 117.9 g Mass of system after reaction 117l98 Maxium pressure 1.4094 initial pressure 1.0094 pressure change .4 temp

    asked by Sarah on June 25, 2014
  41. Stastics

    A researcher wanted to test the effect of a new drug on reducing blood pressure. In the study, there were 35 participants. The researcher measured the participants’ blood pressure before and after the drug was administered. If we want to compare the mean

    asked by Davina on April 25, 2016
  42. Biology

    Pick the correct answer, and explain why it is correct. If the pressure in the thoracic cavity increases and the pressure in the ventricles due to venous return remains the same, A. Stroke volume will decrease B. heart rate will decrease C. Cardiac output

    asked by Sarah. (please help) on March 24, 2015
  43. Chemistry

    We're doing gas problems in chemsitry. I have no idea where to even begin on this problem: Air is 20% oxygen and 80% nitrogen. What is the mass of air in an automobile tire of 19.7 L and internal pressure of 46.7 PSI at 24 degrees celsius? (That pressure

    asked by Avalon on March 30, 2010
  44. Chemistry

    A 260-ml flask contains pure helium at a pressure of 756torr . A second flask with a volume of 470ml contains pure argon at a pressure of 717 torr . A)If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial

    asked by Rose on October 16, 2009
  45. Math

    air pressure decreases during a storm. the difference between the normal air pressure n and the air pressure during the 1935 florida keys hurricane wasd greater than 121 millibars. write and solve the inequality to find the normal airpressure in the

    asked by Angelina on March 9, 2015
  46. Chemistry

    A sample of gas collected over water at 42 C occupies a volume of one liter. The wet gas has a pressure of 0.986 atm. The gas is dried, and the dry gas occupies 1.04 L with a pressure of 1.00 atm at 90 C. Using this information, calculate the vapor

    asked by Bree on October 15, 2010
  47. Science

    I need help understanding this. I keep re-reading and I'm still confused. Can you help me by re writing it in a way that I can understand? The pressure law states that for a constant volume of gas in a sealed container the temperature of the gas is

    asked by Learner on September 24, 2015
  48. Statistics

    Jim's systolic blood pressure is a random variable with a mean of 145 mmHg and a standard deviation of 20 mmHg. For Jim's age group, 140 is the cutoff for high blood pressure. If Jim's systolic blood pressure is taken at a randomly chosen moment, what is

    asked by Loray on September 17, 2014
  49. physics

    The sound level in decibels is typically expressed as β = 10 log (I/I0), but since sound is a pressure wave, the sound level can be expressed in terms of a pressure difference. Intensity depends on the amplitude squared, so the expression is β = 20 log

    asked by melisa on November 16, 2011
  50. physics

    The sound level in decibels is typically expressed as β = 10 log (I/I0), but since sound is a pressure wave, the sound level can be expressed in terms of a pressure difference. Intensity depends on the amplitude squared, so the expression is β = 20 log

    asked by maria on November 17, 2011
  51. physics

    The sound level in decibels is typically expressed as β = 10 log (I/I0), but since sound is a pressure wave, the sound level can be expressed in terms of a pressure difference. Intensity depends on the amplitude squared, so the expression is β = 20 log

    asked by maria on November 16, 2011
  52. Science

    A cylinder and an airtight piston are used in the following experiment. The piston is pushed up and down in the cylinder and the resulting pressure of the air inside the cylinder is measured with a pressure gauge. The results of the experiment are recorded

    asked by dulce on July 13, 2014
  53. Chem Help Please!!! DrBob222

    a) The equipment you would use for carrying out a simple distillation at reduced pressure (i.e. under vacuum) b) the equipment you would use for carrying out a simple distillation at atmospheric pressure. a) The equipment you would use for carrying out a

    asked by Bailey on September 1, 2014
  54. chemistry

    11.31) solve for the new pressure when each of the following temperature changes occurs, with n and V constant: a. a gas sample has a pressure of 1200 torr at 155 celcius. what is the final pressure of the gas after the temperature has droped to 0 celcius?

    asked by Jetta on June 27, 2010
  55. chemistry

    A 1-\rm L flask is filled with 1.35 g of argon at 25 {\rm ^\circ C}. A sample of ethane vapor is added to the same flask until the total pressure is 1.15 atm.What is the partial pressure of argon, P_Ar, in the flask?What is the partial pressure of ethane,

    asked by Anonymous on January 11, 2011
  56. chemistry

    A 1 L flask is filled with 1.40 g of argon at 25 degrees celcius. A sample of ethane vapor is added to the same flask until the total pressure is 1.00 atm. Whatis the total pressure of Argon in the flask ? What is the partial pressure of ethane in the

    asked by supaflychic101 on March 1, 2010
  57. Chemistry

    A 1.00 L flask is filled with 1.05 g of argon at 25 ∘C. A sample of ethane vapor is added to the same flask until the total pressure is 1.150 atm . a.)What is the partial pressure of argon, PAr, in the flask? b.)What is the partial pressure of ethane,

    asked by Kevin on July 11, 2018
  58. chemistry

    A 8.00 L cylinder containing SF6 at a pressure of 0.400 atm is connected by a valve to 91.0L cylinder containing 02 at 342 torr pressure. Both cylinders are at 8.00 C. Calculate the partial pressure (torr) of SF6 when the valve is opened and the

    asked by betty on January 27, 2008
  59. chem

    A 1-L flask is filled with 1.25g of argon at 25 ∘C. A sample of ethane vapor is added to the same flask until the total pressure is 1.35atm . What is the partial pressure of argon, PAr, in the flask? What is the partial pressure of ethane, Pethane, in

    asked by emily on November 25, 2013
  60. Chemistry

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.6 L of water upon warming from 25 C to 50 C. Assume that the water is initially saturated with nitrogen and oxygen gas at

    asked by RE on September 18, 2009
  61. chemistry

    Two gases are contained in gas bulbs connected by a valve. Gas A is present in a 56 L bulb at a pressure of 213 torr. Gas B exerts a pressure of 683 torr in a 74 L bulb. What is the partial pressure of gas B after they equilibrate once the valve has been

    asked by Bob on November 1, 2010
  62. chemistry

    At 650 degree C and a pressure of 690mm HG, the 0.927g sample has a volume of 194cm3. How do I calculate the volume at the same temp but at a pressure of 760mm Hg? Also, how do I calculate the volume at the same pressure but at a temp of 0 degree C? Thanks

    asked by sarah on February 26, 2007
  63. Chemistry

    Nitric oxide (NO) reacts with molecular oxygen as follows: 2NO(g) + O2(g) ¨ 2NO2(g) Initially NO and O2 are separated as shown below. When the valve is opened, the reaction quickly goes to completion. Determine what gases remain at the end of the

    asked by Sarah on October 31, 2010
  64. Chemistry HELP!!!!

    Nitric oxide (NO) reacts with molecular oxygen as follows: 2NO(g) + O2(g) ¨ 2NO2(g) Initially NO and O2 are separated as shown below. When the valve is opened, the reaction quickly goes to completion. Determine what gases remain at the end of the

    asked by mia on October 31, 2010
  65. AP Chemistry

    A mixture of aluminum and zinc metal is used in 2 experiments described below: A- A 1.7 gram sample of the mixture is reacted with excess hydrochloric acid and the resulting hydrogen gas is collected over water. The reaction takes place at 750 mm Hg

    asked by Kate on April 3, 2011
  66. history/chem

    can someone briefly explain what did aristotle and what did plato contribute to chemistry?

    asked by kelli on September 19, 2008
  67. science

    chemistry Science.what can be deduced from the temperature change during the different reaction?

    asked by ofentse on September 21, 2015
  68. science

    How do the principles of physics and chemistry both come into play when developing new materials

    asked by long on March 15, 2012
  69. CHEMISTRY

    how would a chemistry student make a 600 mL of 1.5 M solution of NaBr?

    asked by David on May 9, 2013
  70. CHEMISTRY

    how would a chemistry student make a 600 mL of 1.5 M solution of NaBr?

    asked by David on May 9, 2013
  71. Calculating Charge on a Polpetide

    10) What is the charge on the peptide CHEMISTRY at pH 8.3?? How would you go about this?Look at the ionizable groups? Thanks, Rachel

    asked by Rachel on January 20, 2009
  72. Chemistry

    Please,tell me the ways I can use to understand chemistry better.I need help,and it is urgent because am starting to drop.

    asked by Miracle on February 17, 2016
  73. Reduction

    when NaBH4 is used as a reducing agent in organic chemistry, is the B or the H being oxidized?

    asked by Tony on December 9, 2008
  74. science

    someone please help with this chemistry question. Describe what happened when Ag+ combined with Na^2CO^3. What does this indicated?

    asked by hotdognibba70 on December 6, 2017
  75. chemistry

    I need help on a balance ionic equation in chemistry Ca(NO3)2 + NaOH

    asked by Anonymous on January 27, 2013
  76. science

    How do the principles of physics and chemistry both come into play when developing new materials?

    asked by long on March 14, 2012
  77. chemistry

    I need some help with making a solubility rule for CrO4 -2 for my chemistry homework.

    asked by Debbie on April 1, 2012
  78. college chemistry

    what major concepts makes chemistry useful in everday life?

    asked by edward on January 10, 2015
  79. Where is DrBob222?

    Hey does anyone know when DrBob222 comes on here, cause I have a lot of chemistry questions which I need him to check. Thanks.

    asked by Anonymous on October 11, 2010
  80. chemistry

    what major concepts makes chemistry useful in everday life?

    asked by edward on January 10, 2015
  81. A&P

    Why is chemistry such an important part of the study of Anatomy and Physiology?

    asked by jamie on August 29, 2008
  82. chemistry

    hey i need help on finding a good oxidation chart for chemistry.

    asked by shylo on April 3, 2008
  83. Chemistry- volumn

    chemistry: 50mL HNO3 + 50.5mL HaOH = volumn?

    asked by Julia on November 5, 2010
  84. To all chemistry students

    Please understand that one of our chemistry tutors is on vacation this week. Please be patient.

    asked by Writeacher on March 24, 2011
  85. chem :(

    If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant, what final pressure would result if the original pressure was 750.0 mm Hg? Round to the nearest tenth. Don't forget the units.

    asked by nene on May 10, 2013
  86. Chem

    Find the exerted pressure in kpa Volume=0.05L Mass=5 Atmospheric pressure =764mm Hg Temperature=21degree Celsius Cross sectional area plunger 5.3 x10-4

    asked by Riley on November 11, 2014
  87. chem

    If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant, what final pressure would result if the original pressure was 750.0 mm Hg? Round to the nearest tenth. Don't forget the units.

    asked by nene on May 10, 2013
  88. physics

    an ideal monatomic gas is allow to expand slowly until its pressure is reduced to exactly half its original value. By what factor those the volume changes if the pressure is (1)isothermal (2)adiabatic. Please is the answer suppose to be a calculation or an

    asked by Joanna on March 8, 2012
  89. Chemistry

    I have been stuck on this question please help me solve it? The following reaction is used in some self-contained breathing devices as a source of O2(g). 4KO2(s)+2CO2(g)⇌2K2CO3(s)+3O2(g)Kp=28.5at25∘C Suppose that a sample of CO2(g) is added to an

    asked by Steve on February 16, 2016
  90. chemistry

    A 250 ml cylinder containing C2H4 at a pressure of 1.00 atm is connected by a valve to 950 ml cylinder containing PF3 at 2.50 atm pressure. Calculate the partial pressure (atm) of Pf3 when the valve is opened.

    asked by betty on January 27, 2008
  91. chem

    A gas at a pressure of 2.0 atm is contained in a closed container. Indicate the changes in its volume when the pressure undergoes the following changes at constant temperature. (Assume that the volume of the container changes with the volume of the gas.)

    asked by keyisha on November 10, 2011
  92. algebra

    the function, p(d) =1 d + ____ 33 gives the pressure, in atmospheres (atm), at an 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 120 feet. The pressure at 120 fee is ____ atm.

    asked by spirit73 on September 23, 2009
  93. Grammar

    Pressure was applied. 1. This is a fragment that can be fixed by adding a subject before pressure. 2. this is a fragment that can be fixed by adding a verb after pressure. 3. This is a fragment that can be fixed by adding both a subject and a verb. 4. This

    asked by Leslie on May 10, 2011
  94. physics

    When you suddenly stand up after lying down for a while, your body may not compensate quickly enough for the pressure changes and you might feel dizzy for a moment. (a) If the gauge pressure of the blood at your heart is 14.3 kPa and your body doesn't

    asked by john on November 7, 2010
  95. Chemistry

    Divers know that the pressure exerted by the water increases about 100 kPa 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 below the surface, the pressure is 301 kPa; and so forth. If the volume

    asked by Angela on March 2, 2014
  96. science; AP Chem

    Divers know that the pressure exerted by the water increases about 100 kPa 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 below the surface, the pressure is 301 kPa; and so forth. If the volume

    asked by Anonymous on September 14, 2012
  97. chemistry

    Consider a 50 L tank which hold 20 g of hydrogen gas, 20 g of carbon dioxide gas, and 20 g of krypton gas, at a total pressure of 600 KPa. 1. which gas has the largest partial pressure? 2. Which gas the smallest average speed? 3. What is the temperature of

    asked by Hunter on January 20, 2011
  98. chem

    The pressure 15.0 meters under water is 248 kPa. what is this pressure in bar? (how would you set this up) what is the pressure in torr? I believe the second one is set up like this: 248 kpa * (760 torr/ 101.325 kpa)= 1860.15.. Although, if the lowest sig

    asked by Joanne on June 21, 2018
  99. Chemistry

    At a total atmospheric pressure of 1.00 atm, the partial pressure of CO2 in air is approximately 4.0×10−4 atm. If at 20 ∘C and a partial pressure of 760 mmHg, the solubility of CO2 in water is 0.169 g/100mL, what is the solubility of CO2 in an open

    asked by Mike on December 6, 2014
  100. 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 m^3 at sea level where the pressure is 1 atm and the temperature is 20°C. When the

    asked by Shirley on November 20, 2011