1. chemistry

    A 2.85 g sample of an unknown chlorofluorocarbon is decomposed and produces 558 mL of chlorine gas at a pressure of 756 mmHg and a temperature of 298 K.What is the percent chlorine (by mass) in the unknown chlorofluorocarbon?

    asked by cj on November 8, 2010
  2. Chemistry

    Consider the following chemical reaction: C (s)+ H2O(g) --> CO(g)+ H2(g) How many liters of hydrogen gas are formed from the complete reaction of 1.20 mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and temperature of 310 K.

    asked by Eileen on April 16, 2010
  3. Chemistry

    three different liquids are used in a manometer. (a) derive an expression for P1-P2 in terms of ro(a), ro(b), ro(c), h1, and h2 (b) suppose fluid A is methanol, B is water, and C is a manometer fluid with a specific gravity of 1.37; pressure P2=121.0 kPa;

    asked by Marissa on November 7, 2010
  4. Chemistry

    An aqueous solution is composed of 7.50 g NaCl (MM = 58.44 g/mol) diluted to 0.100 L. Calculate the osmotic pressure of the solution at 298 K a. 5.83 atm b. 9.22 atm c. 18.3 atm d. 62.8 atm

    asked by Kat on February 6, 2016
  5. Science

    5 ml of water at 4 degree Celsius (density 1 g/ml) is converted to steam at 110 degree Celsius. What volume will the steam occupy when pressure is 380 Torr?

    asked by Ayshi on June 29, 2013
  6. Chemistry

    A sample of a gas at STP has its temperature raised to 510C and its pressure raised to 5 atm. If the initial volume of this gas is 100.0 ml, what will the final volume be?

    asked by Linda on May 13, 2012
  7. pressure

    a 6.04L cylinder contains 1.71mol of gas A and 4.35 mol of gas B, at a temperature of 33.1C. calculate the partial pressure of each gas in the cylinder. assume ideal gas behavior.

    asked by Anonymous on September 18, 2013
  8. RPCC

    a sample gas has a volume of 200 cubic cm at 25 C and 700 mmHG. If the pressure is reduced to 280 mmHg, what volume would the gas occupy at the same temperature?

    asked by Bird on March 31, 2011
  9. Chemistry

    the gaseous product of a reaction is collected in a 25.0L container at 27c. the pressure in the container is 300.0 kpa and the gas has a mass of 96.0g. what is the molar mass of the gas?

    asked by Destiny on December 12, 2011
  10. SCIENCE

    The diagram shows the variation of air pressure from an alarm siren at particular instant. The speed of sound in the air is 340m/s. what is the period of alarm siren.

    asked by RITIKA on November 15, 2016
  11. Chemistry Honors

    Use the diagram below to answer the following question. What will be water's phase of matter at a temperature of 74°C and a pressure of 4.4 mm? A. mostly liquid B. mostly solid C. solid, liquid, or gas D. mostly gaseous Answer: D

    asked by Amber M. on June 2, 2018
  12. physics

    Show that the atm.pressure of 1.013x10^5Pa will support (a)10.3m of water (b)760mmHg of Hg.If the density of water is 10^3kg/m3 and density of mercury is 13.6x10^3kg/m3.

    asked by Y.Abdulsalam on December 10, 2017
  13. physics

    calculate the pressure needed for the pump of a 3.0 cm radius firehouse to pump water through its nozzle of radius 2.0 cm at an average speed of 4.0 m/s when the nozzle is 15 m above the fire truck.

    asked by hazel on January 6, 2013
  14. Chemistry

    What volume will 823 mL of SO3 gas at 11 degrees celsius and 720 mm Hg occupy when the pressure is raised to 1.55atm and the temperature is raised to 81 degrees celsius?

    asked by Teresa on November 23, 2014
  15. Chemistry

    A 3.00- L flask is filled with gaseous ammonia, N H 3 . The gas pressure measured at 28.0 ∘ C is 2.05 atm . Assuming ideal gas behavior, how many grams of ammonia are in the flask?

    asked by Anonymous on February 19, 2018
  16. phy113

    Mass of gas is 300 gm and its specific heat at constant volume is 750 J/kg K. if gas is heated through 75°C at constant pressure of 105 N/{m^2}, it expands by volume

    asked by onas on April 25, 2015
  17. Chemistry

    A sealed flask containing water and N2 gas in equilibrium is at a temperature of 25°C. If the concentration of N2 gas in the solution is 1.4 x 10-3 M, what is the partial pressure of N2 gas in the container? (kH for N2 gas in water is 6.1 x 10-4 M/atm at

    asked by Sarah on November 7, 2011
  18. CHEMISTRY

    NEED HELP (Combined gas Law) A gas at a pressure of 1.50 atm has a volume of 200 mL. Calculate the new volume if the pressue changes to 1.20 atm. Assume constant temperature.

    asked by JOY on March 19, 2013
  19. Chemistry

    If a balloon containing 1000 L of gas at 50 degrees Celsius and 101.3 kPa rises to an altitude where the pressure is 27.5 kPa and the temperature is 10 degrees Celsius, its volume there is?

    asked by Matt on November 10, 2014
  20. chemistry

    A balloon is inflaed outdoors on a cold day in lowa at a temperature of -40 c to a volume of 2.00 l. If the pressure remains constant, what is the volume of the same balloon if taken indoors at a temperature of 25 c?

    asked by Yolanda on December 6, 2012
  21. physics

    In an experiment to determine the rate at which heat is extracted from a hot material, 305 g of the material at 90 °C is put into a 50 mm diameter copper vessel to a depth of 90 mm as shown below. The hot material and calorimeter are placed in a container

    asked by john on April 12, 2011
  22. chemistry

    Oops I left a part of the question out: 2. Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a

    asked by Brooke on September 23, 2014
  23. Calculus

    Water is running into an open conical tank at the rate of 9 cubic feet per minute. The tank is standing inverted, and has a height of 10 feet and a base diameter of 10 feet. At what rate is the radius of the water in the tank increasing when the radius is

    asked by Lacy on December 14, 2015
  24. geometry

    the bore of an engine cyclinder is the diameter of the piston and the stroke is the distance that the piston will travel up the cyclinder wall. The displacement is the volume of space that the piston goes thru. If the piston is 3.97" in dia. and the stroke

    asked by ALICE on April 25, 2013
  25. math

    A cylinder shaped sculpture is 24 meters high with a diameter of 6.8 meters. An artist plans to spray paint the entire surface with silver paint. If 1 can of spray paint covers 50 square meters, how many cans does the artist need to paint the sculpture?

    asked by kelly on March 28, 2012
  26. Chemistry

    (a) What is the diameter, in micrometers, of a spherical ink droplet from an early version of an ink-jet printer if the volume of the droplet is 200 ± 10 pL? If the ink has a density of 1.1 g/mL, what is the mass in milligrams of ink in a droplet from

    asked by Zandria on May 25, 2009
  27. chemistry help!!! (clueless)

    1. Consider the conductance meter and the titration method of determining the salt content of a brine sample. Discuss at least two advantages and two disadvantages of each method. 2. A corrosion technologist pipetted a 50.00 mL sample of an unknown brine

    asked by lightning on June 19, 2006
  28. Math, mathematics of finance

    I am stuck on these two math questions. If nyone could help me solve them it would be greatly appreciated! Here is the information: Engineering estimates indicate that the variable cost of manufacturing a new product will be $35 per unit.Based on market

    asked by Zoey on February 18, 2012
  29. chemistry

    If you pass 10.0mL of a 50.0mL solution of [Co(en)2Cl2]Cl that has been reduced with Zn through a cation exchange column, you will obtain a solution that has three H+ ions for every Co3+ ion that was originally present in the sample. These H+ ions are

    asked by xx on October 26, 2014
  30. Health (Ms. Sue)

    When is CPR used? A: CPR is used when a person does not have a pulse or a blood pressure and are not responsive. CPR is also used when a person is in cardiac arrest?

    asked by Anonymous on January 1, 2014
  31. English

    Thank you very much for your help. I have some more sentences I'm not sure of. 1) I've been proud of myself when I won the regional competition of judo. I’ve been proud on 24 July when I passed my driving test. Can you say “when I got the highest grade

    asked by Mike1 on April 16, 2011
  32. Physics

    Water flowing through a 2.8 cm-diameter pipe can fill a 200 L bathtub in 5.8 min. Flow rate Q = volume/time = speed * cross section area Q=200/5.8=speed*.028....i get 1231.52 or Q=(200/348)=speed*.028...i get 20.52 both are wrong so what do i do? then i

    asked by ana on November 17, 2009
  33. AP Physics

    You can obtain a rough estimate of the size of a molecule by the following simple experiment. Let a droplet of oil spread out on a smooth water surface. The resulting oil slick will be approximately one molecule thick. Given an oil droplet of mass 10.00

    asked by Brittany on September 4, 2013
  34. chemistry

    In an esterification experiment, 2.0 mol of ethanol were mixed with 1.0 mol of ethanoic acid in a container of volume 30cm3 and the chemicals were allowed to come to equilibrium at 25°, CH3CO2H + C2HOH CH3COOC2H5 + H20 If the equilibrium mixture contained

    asked by Anonymous on May 28, 2009
  35. Algebra

    If a bicycle has a crankshaft of 40 teeth, and there are three rear sprockets attached to the rear wheel, 20 teeth, 16 teeth and 12 teeth. The diameter of the rear wheel is 60 cm. Which sprocket should be used to get the most distance in one paddle? What

    asked by Maggie on February 22, 2011
  36. Algebra 2

    If a bicycle has a crankshaft of 40 teeth, and there are three rear sprockets attached to the rear wheel, 20 teeth, 16 teeth and 12 teeth. The diameter of the rear wheel is 60 cm. Which sprocket should be used to get the most distance in one paddle? What

    asked by Maggie on February 22, 2011
  37. Maths

    “A solid consists of a right circular cylinder surmounted by a cone of the same diameter. If the height of the cone is 'h' and the volume of the solid is 3 times the volume of the cone , then find the height of the cylinder.”

    asked by Megha on March 17, 2016
  38. Math

    If a bicycle has a crankshaft of 40 teeth, and there are three rear sprockets attached to the rear wheel, 20 teeth, 16 teeth and 12 teeth. The diameter of the rear wheel is 60 cm. Which sprocket should be used to get the most distance in one paddle? What

    asked by Anonymous on February 22, 2011
  39. Chemistry

    Help needed with a calorimeter lab. I have to measure the enthalpy of a neutralization reaction between NaOH and HCl as well as find the concentration of NaOH the following ways. - using the mass and volume of NaOH - Using calorimetric data assuming no

    asked by Bibi on November 17, 2014
  40. Chemistry

    Free-energy change, ΔG∘, is related to cell potential, E∘, by the equation ΔG∘=−nFE∘ where n is the number of moles of electrons transferred and F=96,500C/(mol e−) is the Faraday constant. When E∘ is measured in volts, ΔG∘ must be in

    asked by Tim on May 18, 2014
  41. chem

    the element nitrogen and magnesium react to give magnesium nitride according to the balanced equation N2 + 3Mg = Mg3N2 suppose you have 0.3616 mol of n2 1-how many moles of mg are needed for complete reaction? 2-what mass of Mg3N2, in grams can be

    asked by burrprett on September 27, 2011
  42. Physics

    Determine the indicator horse power and piston displacement of a machine of the piston area 100m^2 given the piston stroke to be 600cm and indicating mean pressure to be 500kg/m^2. The number of piston stroke per minute is 4

    asked by Eric on November 4, 2018
  43. CHEMISTRY

    a gas mixtuer consists of equal masses of methane(molecular weight 16.0) and argon (atomic weight 40.0) if the partial pressure of argon is 26.6 kPa, what is that of methane in the same units? 10.7 26.7 66.7 34.1 I am going with 26.7 Do you agree and why

    asked by Andy on May 11, 2010
  44. physics

    At the top of mount everest the density of air is 1.2kilogram/meter cube and its pressure and temperature are 200kpa & 150k.what is the volume of the air at the bottom of mount everest if p=300pa & T=400k ?

    asked by mintesnot on October 27, 2013
  45. Chemistry

    If a catalyst is added to a system at equilibrium and the temperature and pressure remain constant there will be no effect on the: (1) rate of the forward reaction (2) rate of the reverse reaction (3) activation energy of the reaction (4) heat of reaction

    asked by Jazmin F. on March 9, 2011
  46. chem help

    A sample of methane gas, CH4 was collected over water at 25 degrees celcius and 720 torr. The volume of the wet gas is 2.50L. What will be the volume of the dry methane at a standard pressure?

    asked by annonymous on November 30, 2010
  47. chemistry

    The Henry's law constant for CO2 at 20°C is 3.7*10^-2 M/atm. What mass of CO2 (in grams) is present in 355 mL of soda drink if the pressure of CO2 in the can is 2.5 atmospheres at 20°C? (Assume the solubility of CO2 in the soda is the same as water)

    asked by Ellen on March 17, 2014
  48. chemistry

    A sample of an ideal gas at 15.0 atm and 10.0 L is allowed to expand against a constant externam pressure of 2.00 atm at a constant temperature. Calculate the work in KJ for the gas expansion (Boyle's law applies)

    asked by alexie on October 9, 2010
  49. physics

    The air pressure variations in a sound wave cause the eardrum to vibrate. Find the maximum velocity and acceleration of the eardrum for vibrations of amplitude 1.5 10-8 m at a frequency of 19.0 Hz.Repeat (b) for the same amplitude but a frequency of 19.0

    asked by mike on March 31, 2010
  50. Chemsitry

    Consider the equilibrium A(g)=2B(g)+3C(g) at 25 degrees Celsius. When A is loaded into a cylinder at 10 atm and the system is allowed to come to equilibrium, the final pressure is found to be 12.13 atm. What is the standard gibbs free energy of reaction

    asked by Anonymous on January 31, 2014
  51. Chemistry

    A 630. mL flask contains O2 at a pressure of 0.75 atm and a temperature of 20°C. What mass of O2 is present? I know you Use PV = nRT and solve for n = number of mols gas. Then n = grams/molar mass and solve for grams. But I get the wrong answer

    asked by Chelsey on February 26, 2014
  52. chemistry

    A 355.0 ml container holds 0.146 g nitrogen gas and an unknown amount of argon at 35 degrees and a total pressure of 626 mmHg, Calculate the amount (mol) of argon in the container.

    asked by Anonymous on October 30, 2017
  53. physics 1401!

    A closed-end tube is evacuated and placed with its open end beneath the surface of a reservoir of water. The water rises to a height of 9.5 m. If the density of water is 1000 kg/m^3, what is the pressure at the bottom of the column of water?

    asked by christine on July 7, 2015
  54. ap chemistry

    calculate the concentration of CO2 in a soft drink after the bottle is opened and equilibrates at 25C under a CO2 partial pressure of 0.0003 atm. c=KP henry's law k=? P=0.0003 atm. how to solve

    asked by Kyle on January 6, 2015
  55. ap chemistry

    calculate the concentration of CO2 in a soft drink after the bottle is opened and equilibrates at 25C under a CO2 partial pressure of 0.0003 atm. c=KP henry's law k=? P=0.0003 atm. how to solve

    asked by Kyle on January 6, 2015
  56. ap chemistry

    calculate the concentration of CO2 in a soft drink after the bottle is opened and equilibrates at 25C under a CO2 partial pressure of 0.0003 atm. c=KP henry's law k=? P=0.0003 atm. how to solve

    asked by an on January 6, 2015
  57. Physics Fluid Mechanics

    HELP! a 650kg weather balloon is designed to lift a 4600kg package. what volume should the balloon have after being inflated with helium at 0°C and 1atm pressure to lift the total load? (hint. use the density value of helium) thanks!!

    asked by KarryStyles on February 24, 2016
  58. physical science

    If a quantity of gas in a piston cylinder has a volume of 0.9 m3 and is initially at room temperature (30°C) and is heated in an isobaric (constant-pressure) process, what will be the temperature of the gas in degrees Celsius when it has expanded to a

    asked by Eric on May 2, 2011
  59. chemistry help!

    A sample of methane gas, CH4 was collected over water at 25 degrees celcius and 720 torr. The volume of the wet gas is 2.50L. What will be the volume of the dry methane at a standard pressure?

    asked by samantha on December 1, 2010
  60. Chemistry

    When treating a patients physicians use an isotonic means that this solution will have the same osmotic pressure as the body fluid such as blood. how many grams of glucose (C6H12O6) is in 100.0 g of H2O in the isotonic glucose solution (5.00% m/m)?

    asked by Tina on December 10, 2014
  61. Science

    fus = 12.5 and vap = 93.2 both j/k x mol Determine the entropy change when 7.30 mol of HCL(g) condenses at atmospheric pressure. my first answer was -91.3 but it keeps telling me that is incorrect and that delta Svap if scaled at 1.00 mol but needs to be

    asked by Talaya on March 14, 2015
  62. chemistry help !!!!!!!!!!!!!!!!

    H2(g)+Cl2(g)=2HCL(g) it is found experimentally that 1 mole of H2 gas react with 1 mole of CL2 gas at constant temperature & pressure , to release 184kJ of heat .what is the enthalpy change for this reaction? ∆H=

    asked by john on January 4, 2013
  63. chemistry

    A sample of an ideal gas at 1.00 atm and a volume of 1.31L was placed in a weighted balloon and dropped into the ocean. As the pressure had increased to 45.0 atm, what was the volume of the sample? Assume that the temperature was held constant.

    asked by rena on July 28, 2013
  64. chemistry

    you are given an unknown gaseous binary compound. when 10.0g of the compound isburned in excess oxygen, 16.3g of water is produced. the compound has 1.38 times that of oxygen gas at the same conditions of temperature and pressure. give a possible identity

    asked by keith on December 8, 2011
  65. Chemis

    Of the floowing compound, which would you exoect to have the lowest vapor pressure at room temperature: CHCl3 CH2Cl2 CH3Cl CCl4 From my result I think it is CH3cl beacuse of the dispersion force it has the lowest force

    asked by Avi on June 11, 2007
  66. chemistry phyics HELP PLEASE STUCK

    A 20.0 L tank contains helium at a pressure of 100 atm and a temperature of 30 degrees Celsius. A) what is the mass of the helium inside the tank?(HINT: the molar mas of He is 4.0 g/mol B) what would the mass of nitrogen (N2) be under the same conditions?

    asked by nikkie on October 27, 2014
  67. Science

    At 25°C, Kp = 2.910−3 for the following reaction. NH4OCONH2(s) 2 NH3(g) + CO2(g) In an experiment carried out at 25°C, a certain amount of NH4OCONH2 is placed in an evacuated rigid container and allowed to come to equilibrium. Calculate the total

    asked by Margaret on February 13, 2013
  68. chemistry

    The vapor pressure of dichloromethane, CH_2Cl_2, at 0 degrees celcius is 134 mmHg. The normal boiling point of dichloromethane is 40 degrees celcius. Calculate its molar heat of vaporization (in kJ/mol).

    asked by jack on January 31, 2010
  69. Chemistry

    A piece of dry ice (solid carbon dioxide) with a mass of 30.5g is allowed to sublime. Assuming that all of the carbon dioxide ends up in the balloon, what will be the volume of the balloon at a temperature of 22 ∘ C and a pressure of 746mmHg?

    asked by Anonymous on August 15, 2013
  70. AP Chem

    solid (NH4)2CO3 is placed in an evacuated container at 115C. When equilibrium is reached the total pressure inside the vessel is 0.473 atm. Some solid remain in the vessel at equilibrium. Calculate Kp.

    asked by Megan on October 28, 2014
  71. physics

    In a machine, an ideal fluid with a density of 0.9*10^3 kg/m^3 and a pressure of 1.3*10^5 Pa flows at a velocity of 6.0 m/s through a level tube with a readius of 0.5 cm. This tube connects to a level tube that has a radius of 1.5 cm. How fast does the

    asked by Anonymous on May 11, 2007
  72. chem111

    If a balloon holds 2000L of Helium at sea level, at 1 atm and 25 degress Celsius, what will its volume be if it is allowed to rise to a height og 8 miles, where the pressure is 0.30 atm and the temperature is -70 degress Celsius.

    asked by merc on November 6, 2013
  73. chemistry

    calculate the concentration of CO2 in a soft drink after the bottle is opened and equilibrates at 25C under a CO2 partial pressure of 0.0003 atm. c=KP henry's law k=? P=0.0003 atm. how to solve

    asked by Kyle on January 6, 2015
  74. chemistry

    At 25°C, Kp = 2.910−3 for the following reaction. NH4OCONH2(s) 2 NH3(g) + CO2(g) In an experiment carried out at 25°C, a certain amount of NH4OCONH2 is placed in an evacuated rigid container and allowed to come to equilibrium. Calculate the total

    asked by Ashley Jimenez on February 18, 2013
  75. Chemistry

    A sodium chloride solution has a density of 1.22 g/mL. How many moles of NaCl are dissolved in 10.0 mL of the solution? The density of water is 1.00 g/mL. My solution: ? mol NaCl = 10 mL*1.22 g/1mL*1mL/58.5g The correct answer is 3.76*10^2 mol. Please

    asked by Anonymous on March 22, 2015
  76. college Physics

    Dear Sir, Please help. I am struggling with the below problems for a very long time. thanks Larry King 1) Suppose that in a certain atmospheric situation, a falling raindrop, having an initial mass of 0.010g. collects smaller droplets by collision at such

    asked by Larry King on February 5, 2009
  77. help

    A. A light plain is coming in for a landing at a speed of 100 km/hr. The wheels have zero rotation just before touching the runway. If 1/10 the weight of the plane is maintained by the upward force of the runway for the first second, what is the

    asked by anirudh dhiman on April 18, 2012
  78. chemistry

    Which would produce greater number of moles of product: a certain amount of hydrogen gas reacting with oxygen gas to make water, or the same amount of hydrogen gas reacting with nitrogen gas to make ammonia? Why?

    asked by tay on April 11, 2010
  79. physics

    On its highest power setting, a microwave oven increases the temperature of 0.350 kg of spaghetti by 45.0°C in 100 s. (a) What was the rate of power absorption by the spaghetti, given its specific heat is 0.900 kcal/kg·°C? W (b) Find the average

    asked by taryn on April 5, 2013
  80. physics

    On its highest power setting, a microwave oven increases the temperature of 0.350 kg of spaghetti by 45.0°C in 100 s. (a) What was the rate of power absorption by the spaghetti, given its specific heat is 0.900 kcal/kg·°C? W (b) Find the average

    asked by taryn on April 7, 2013
  81. Math

    A circular ice rink is being built in town. Around the ice rink, a walkway will be built. The ice rink will have a diameter of 8080 feet and the walkway will be 1010 feet wide. What is the approximate area of the walkway? A. 314 ft B. 2,826 ft C. 12,874 ft

    asked by Madeline on December 5, 2016
  82. math/geometry

    Jamie rides a Ferris wheel for five minutes. The diameter of the wheel is 10 meters,and its center is 6 meters above the ground. Each revolution of the wheel takes 30 seconds. Being more than 9 meters above the ground causes Jamie to suffer an anxiety

    asked by sally on April 11, 2010
  83. Math

    A retail outlet purchased 400 printers at a list price of $80 less 6%, 3%. The Gross Profit Margin on the printers was 50%. After selling 50% of the shipment, the rest of the printers were marked down to a reduced selling price. When there were only 30

    asked by Geoff on January 31, 2007
  84. Math

    A souvenir consisting of a cube with an inserted sphere is made to represent Earth. Both pieces are made out of solid crystal. The sphere replaces one quarter of the volume of the cube. Calculate the volume of the souvenir piece. The sphere has diameter of

    asked by Cherie on September 24, 2014
  85. physics

    When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 10.00 cm long and 3.00 mm in diameter is compressed an average of 65.0 µm by a 0.460 kg hammer during a 1.20 ms collision. (a) What average force was exerted on the

    asked by mathew on October 1, 2014
  86. chemistry

    A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 2.35 . Assuming ideal gas behavior, how many grams of ammonia are in the flask?

    asked by chris on March 24, 2012
  87. chemistry

    A volume (54.2 L) of gas at 1150 mmHg is subjected to a new pressure of 3450 mmHg, at constant temperature. What volume in liters (L) does the gas now occupy

    asked by casey on October 21, 2015
  88. Chemistry

    A gas expands from 282 mL to 971 mL at constant temperature.Calculate the work done (in joules) by the gas if it expands against a constant pressure of 6.00 atm.

    asked by Kiana on March 28, 2011
  89. chemistry

    A solution containing 29.00 mg of an unknown protein per 22.0 mL solution was found to have an osmotic pressure of 3.10 torr at 18 ∘C. What is the molar mass of the protein? (3.10 torr* 22mL)=.682 I do not know what to do next

    asked by mmp on February 28, 2016
  90. science

    A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 1.25 . Assuming ideal gas behavior, how many grams of ammonia are in the flask?

    asked by lily on March 22, 2011
  91. Chemistry

    A mixture of gases at 760.0 torr contains 35.0% nitrogen, 22.0% oxygen , and 43.0% carbon dioxide by volume. What is the pressure of the carbon dioxide gas in torr?

    asked by Erica on August 19, 2011
  92. Chemistry

    A 5.00 L flask with mass of 463.873 g is filled with Ar gas to 3 atm pressure at 292 k. (19 celsius + 273) what is the mass of flask and gas?

    asked by Christine on April 4, 2015
  93. Chemistry

    At what pressure would 0.150 mole of nitrogen gas at -23.0oC occupy 8.90 L? -23.o0c = 250 K P=(0.150 mol)(8.31 KPA x L/ K x mol)(250 K) = P is this right?

    asked by Boberto on February 21, 2016
  94. chemistry

    Temp - 650 Pressure - 690mm Hg mass - 0.927g volume - 194cm3 How do I calculate the volume of the gas? You have the volume, given. How do I calculate the volume at a different temperature?

    asked by bex on February 27, 2007
  95. thermodynamics

    if 100ft^3 of atmospheric air at zero fahrenheit temperature are compressed to a volume of 1 ft^3 at a temperature of 200 degree fahrenheit, what will be the pressure of the air in psi?

    asked by 111111 on October 3, 2012
  96. Physics

    A 53008 lb force is applied to a surface that measures 89 in long and 21 in wide. Determine the pressure exerted on the surface by the force in both psi and Pa. 1 Pa = 1.45×10^-4 psi.

    asked by Cameron on October 14, 2018
  97. Chemistry

    A sample of gas occupies 100ml at 25 degree celsius. What volume would the gas occupy at 32 degree celsius if the pressure remains constant

    asked by Nur on October 19, 2016
  98. Chemistry

    What is the relationship between the equilibrium and changes of state? You need to be a little more specific. For liquids, for example, in a closed system, the vapor pressure of the liquid reaches equilibrium between the vapor and the liquid.

    asked by N/A on April 15, 2007
  99. chemistry

    What is the volume of 14 mol of ideal gas if its pressure is 233 kPa and its temperature is 140 ºC? (1 mol of ideal gas at STP occupies 22.4 L).

    asked by John on July 6, 2014
  100. Chemistry

    A 0.35 mol sample of an ideal gas is held in a vessel at 0.C and a pressure of 785 torr. What is the volume of the vessel? (R=62.36L x torr/mol x K)

    asked by Christina on November 9, 2009