osmotic pressure chemistry

10,993 results, page 30
  1. Chemistry

    List the total number of each type of atoms in the following reactants. A) 2HCL + Ca(OH)2 = 6 hydrogen, 2 carbon, 2 lithium, 2 calsium, 4 oxygen B) 2Na3PO3 + 3Ca(NO3)2 This one is a bit more complicated. May any chemistry teacher show me how to do this.

    asked by Derrick on July 12, 2010
  2. organic cehmistry

    I am totally lost on the subject of Fischer projection. I have no clue on where to begin solving : (S) 3-chloro-1-penten-4-yne http://www.mhhe.com/physsci/chemistry/carey/student/olc/ch07projections.html

    asked by Becky on April 7, 2007
  3. chemistry

    By how much will the vapor pressure of water decrease if a solution at 40.0°C is produced by dissolving 16.0212 g of K3PO4 (formula mass = 212.30 g/mol) with 40.8480 g of water. The vapor pressure of pure water at this temperature is 55.30 mmHg. If the

    asked by kat on February 21, 2014
  4. Chemistry

    The vapor pressure of diethyl ether is 463.57 mm Hg at 25 degrees celsius. How many grams of aspirin C9H8O4, a non volatile nonelectrolyte (mw=180.1g/mol), must be added to 216.7g of ether to reduce the vapor pressure to 453.74 mm Hg. Ether=74.12g/mol This

    asked by Hannah on February 19, 2012
  5. Chemistry

    At the start of a road trip, the pressure of the air in a car tire is 276kPa and the temperature is 12.0 degrees Celsius. After driving for some time the pressure in the tire is now 303kPa. Assuming that the volume of the air inside the tire remains

    asked by Joseph on December 5, 2015
  6. Physical Chemistry

    At 25.0o C, the equilibrium 2 NOBr(g) ¡ê 2 NO(g) + Br2(g) is rapidly established. When 1.10 g of NOBr is placed in a 1.0 L vessel at 25.0o C, the equilibrium pressure is 0.355 bar. Calculate the equilibrium constant K. ( P¥è = 1 bar ) Angela. Read your

    asked by Angela on October 18, 2006
  7. chemistry

    use a combustion reaction of liquid ethanol( C2H5OH) an air as a source of work, assuming T=25 celcius, air pressure is 1 atm, and all products are gases with partial pressure of 10 atm each. How high can one lift a 1000 kg weight by burning 100 g of

    asked by Whitney on November 8, 2010
  8. Chemistry

    A student reacts 0.1212 g of an Mg/NaCl mixture with hydrochloric acid. The volume of hydrogen saturated with water vapor collected at 20.0C was measured to be 42.7 ml. The column of water that remained in the buret was 10.3 cm high. If vapor pressure of

    asked by Duane on October 13, 2011
  9. Chemistry

    The world record for a human holding their breath is 11 minutes, but most people can only hold it for a few minutes. If a women holds her breath at the maximum lung capacity (4.2 L), calculate the final pressure in her lungs, if her body temperature is

    asked by Boberto on February 22, 2016
  10. Chemistry- please check my work

    Compute the vapor pressure of water above a solution formed by dissolving 25.00 grams of magnesium sulfate, MgSO4 (MM=120.3) in 95.00 grams of water at 338K. The vapor pressure of pure water at 338K is 188.0 torr. I took 95.00g H20 divided by 18.0g. which

    asked by Eliz on February 24, 2009
  11. science

    An older brother pours all the water out of a small cup on his little brother's head. Later, the little brother pours all the water out of a large pot on the older brother's head. Which of the answer choices correctly analyzes the pressure exerted by the

    asked by malia on August 24, 2017
  12. Chemistry

    I need to be able to tie in acetic acid and boric acid. To decipher properties of acid-base chemistry and how they adhere to Le Chatelier’s principle. I appreciate any input....

    asked by Colleen on November 30, 2010
  13. Physics

    An Ideal gas is sealed within a container at a temperature of 17 degree Celsius and a pressure of 101 KPa. The container is heated until temperature of the gas reaches 100 degree Celsius. A valve in the container is then opened to allow gas to escape until

    asked by Aboodi on November 9, 2017
  14. physics

    water is flowing at 3 m/s in a horizontal pipe under a pressure of 200 kpa. the pipe, which narrows to half its original diameter, is laid out on a level ground? a) what is the speed of flow in the narrow section? b) what is the pressure in the narrow

    asked by Arnel Comia on May 6, 2015
  15. Physics

    Hey can someone help, im having trouble converting alot. IP The weight of your 1440 kg car is supported equally by its four tires, each inflated to a gauge pressure of 30.0 lb/in^2. What is the area of contact each tire makes with the road? What gauge

    asked by Elizabeth on December 4, 2009
  16. math

    According to a national study, 45% of american adults have hypertension, 20% have hypotension, and 35% have normal blood pressure. A sample of 150 adults was taken and the following data were collected. Hypertensive: 54, Normal: 69, Hypotensive: 27. Test

    asked by Joe on November 4, 2012
  17. chemistry

    water is flowing at 3 m/s in a horizontal pipe under a pressure of 200 kpa. the pipe, which narrows to half its original diameter, is laid out on a level ground? a) what is the speed of flow in the narrow section? b) what is the pressure in the narrow

    asked by Arnel Comia on May 6, 2015
  18. science

    when the oxide of arsenic is heated it sublimes and becomes a gas. at 650oc and a pressure of 690mmHg the 0.927g sample of the oxide has a volume of 194cm3. calculate the volume,in cm3, that the sample would have at the same temperture (650oc) but at a

    asked by hanny dunny on February 2, 2007
  19. ap chemistry

    glycerin C3H8O is a nonvolatile liquid. what is the vapor pressure of a solution made by adding 164 g of glycerin to 338 mL of H2O at 39.8C. The vapor pressure of pure water at 39.8C is 54.74 torr and its density is 0.992 g/cm3 P solution= X solvent p

    asked by Nelson on January 11, 2015
  20. physics

    Water flows in a cylindrical, horizontal pipe. As the pipe widens to twice its initial diameter the pressure in the pipe changes. Calculate the change in pressure between the wide and narrow regions of the pipe. Give your answer as an expression in terms

    asked by JJ on January 14, 2010
  21. Chem (Help!)

    I need help in using gas laws to solve problems. I need help with this question: What is the pressure in atmospheres exerted by a 0.500 mol sample of oxygen gas in a 10.0 L container at 298 K? Also what formula would I use to solve the pressure in this

    asked by Lisa on April 29, 2008
  22. Physics

    A typical brick has dimensions of 20.0 cm by 10.0 cm by 5.0 cm and weighs 20.0 N. How does the pressure exerted by a typical brick when it is resting on its smallest side compare to the pressure exerted when it is resting on its largest side PLEASE HELP !!

    asked by anonymous on December 7, 2006
  23. chemistry

    I was asked to bring something into class with a pressure less than 1.0 atm, after researching i found out that if I heated a bottle it will shrink and therefore this bottle will have the needed pressure. the problem is that after I put the bottle inside

    asked by claudia on February 6, 2007
  24. Chemistry. PLEASE HELP

    If we believed that the molecules of a gas move around fairly rapidly, we can use this to explain all of the following EXCEPT why adding more gas increases the pressure. why most of the volume of the gas sample is taken up by the gas molecules. why the gas

    asked by Anonymous on November 5, 2013
  25. college chemistry

    The air in a typical La Crosse basement contains 53 atoms of 222Rn per liter. A. If the basement has 950 ft^2 of floor space and is 8.0 feet tall, how many 222Rn atoms are there in the whole basement? B. Assuming a total pressure of 1.00 atm, what is the

    asked by Sara on August 5, 2015
  26. chemistry

    A piece of dry ice (solid carbon dioxide) with a mass of 5.40 g is placed in a 10.0 L vessel? that already contains air at 715 torr and 25 degrees C. After the carbon dioxide has totally vaporized, what is the partial pressure of the carbon dioxide and the

    asked by Anonymous on May 1, 2013
  27. chemistry

    we believed that the molecules of a gas move around fairly rapidly, we can use this to explain all of the following EXCEPT why adding more gas increases the pressure. why most of the volume of the gas sample is taken up by the gas molecules. why the gas

    asked by Anonymous on November 5, 2013
  28. chemistry

    ok heres my question, nitrogylcerin decomposes: 4c3h4(no5)3 --->12co2(g) +10h20(g)+6n2(g)+02(g) whats is the max pressure that a 10.0L container will be able to withstand if 5.00 Nitroglycerin decomposes at temp of 1250c mm of nitroglycerin =227 g/m i got

    asked by dan on June 21, 2009
  29. physics

    Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone, calculate the total area of the tires in contact with the ground. The bicycle plus rider has a mass of 80.0 kg, and the gauge pressure in the tires

    asked by Mohanad on April 7, 2014
  30. physics

    A suitcase (mass m = 15 kg) is resting on the floor of an elevator. The part of the suitcase in contact with the floor measures 0.50 m × 0.15 m. The elevator is moving upward with an acceleration of magnitude 1.00 m/s2. What pressure (in excess of

    asked by Anonymous on July 18, 2010
  31. physics

    I once was given a metal whiskey flask for being in my cousin’s wedding. When it got dented, I put in 1 gram of H2O (initially 21°C, just like the air filling the rest of the flask) and heated it up to boil the water. It popped the dent out. Assume the

    asked by mike on April 3, 2014
  32. Physics

    I once was given a metal whiskey flask for being in my cousin’s wedding. When it got dented, I put in 1 gram of H2O (initially 21°C, just like the air filling the rest of the flask) and heated it up to boil the water. It popped the dent out. Assume the

    asked by SumSum on March 20, 2014
  33. physics

    I once was given a metal whiskey flask for being in my cousin’s wedding. When it got dented, I put in 1 gram of H2O (initially 21°C, just like the air filling the rest of the flask) and heated it up to boil the water. It popped the dent out. Assume the

    asked by sumsum on March 20, 2014
  34. Chemistry

    I'm working on chemistry homework, and I just came across a few issues I don't understand. For one, why isn't Sodium Bromide NaBr2 (Online sources show it as NaBr)? Isn't Bromine a diatomic element?

    asked by Eric on January 20, 2011
  35. Chemistry

    I did a lab in chemistry about weighing table salt and sand and mixing it with water and pouring it through a funnel. One of my lab quetions was, What are some possible sources of error in this activity? First of all, I don't know what this question means.

    asked by Jennifer on August 28, 2010
  36. chemistry

    Moles chemistry? Calculate the mass of solute required to prepare ib the solution 200cm^3 of solution containig 0.50 mol dm ^-3 cl-iond prepared by dissolving cacl2.6h2o in water.

    asked by joanna on December 8, 2016
  37. chemistry

    the pressure of 3moles of an ideal gas in a container is reduced from 1.0 atm to 0.50 atm against a constant pressure of 0.50 atm at a constant temperature of 273K..what is the change of heat (in J) for the process??Assume that internal energy change at

    asked by Emin on December 7, 2012
  38. chem - pressure

    A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to

    asked by T on March 31, 2010
  39. chemistry

    A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to

    asked by T on March 31, 2010
  40. chemistry college

    At a constant temperature of 20oC and the partial pressure of 760 mmHg, the solubility of CO2 in water is 0.169g per 100mL. If the partial pressure is changed to 43,000 mmHg, what is the solubility of CO2?

    asked by Anonymous on January 12, 2015
  41. Math - Proportion

    The acoustic intensity, I, of a sound wave is proportional to the square of the pressure amplitude, P, and inversely proportional to the velocity, v, of the wave. a) what is the proportionality relationship? b) what happens to the intensity if both the

    asked by Kiirsty on May 13, 2014
  42. Chemistry

    A gas mixture consists of equal masses of methane (molecular weight 16.0) and argon (atomic weight 40.0). If the partial pressure of argon is 200. torr, what is the pressure of methane, in torr?

    asked by Andrew on January 22, 2017
  43. chemistry

    A closed container has a mixture of methane, CH4, ethane C2H6, and propane C3H8. If 12.5 g of methane, 36.0 g of ethane, and 14.0 g of propane have a total pressure of 890. mm Hg, what is the partial pressure of each of the gases in the container?

    asked by josh on April 15, 2012
  44. Physics

    A bicycle tire whose volume is 4.1 x 10-4 m3 has a temperature of 296 K and an absolute pressure of 4.69 x 105 Pa. A cyclist brings the pressure up to 6.75 x 105 Pa without changing the temperature or volume. How many moles of air must be pumped into the

    asked by maysam on December 1, 2006
  45. physics

    Two hundred liters of gas at zero degrees Celsius are kept under a pressure of 150 kPa. The temperature of the gas is raised to 273 degrees Celsius and the pressure is increased to 600 kPa. What is the new volume?

    asked by Anonymous on April 1, 2011
  46. Chemistry

    A 360-mL sample of hydrogen is collected when the pressure is 800 mm Hg. What is the volume that the gas will occupy when the pressure is 720 mm Hg? 360/x=720/800 28800/720=720x/720 400-mL=x Am I correct?

    asked by D on May 19, 2015
  47. thermo

    four hundred cubic centimeters of a gas at 740mm Hg absolute and 18 degree celcius a process until the pressure until the pressure becomes 760mm Hg absolute and the temperature o degree celcius. what is the final volume of the gas

    asked by 111111 on October 3, 2012
  48. chemistry

    If the initial pressure of H2S(g) is 7.404 atm, calculate the % decomposition of H2S(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kp at 1132 °C is 0.0265. The initial pressure of the reaction products is 0

    asked by Anonymous on October 6, 2010
  49. Chemistry

    What partial pressure of oxygen above the water (in atmospheres at 0 C ) is needed to obtain this concentration? The solubility of O2 in water at 0 C and 1 atm partial pressure is . 2.21 x 10^-3 mol/L Concentration needed is 4mg/L Stuck and need help,

    asked by Joe on September 21, 2014
  50. Chemistry

    3. suppose a gas at STP. Calculate its pressure at 25 degrees celcius if volume remains unchanged 5. suppose 1.11 L of an unknown gas in a rigid container constant volume is cooled from 22 deg. C to -55 deg C. Calculate the new pressure of the gas 6.)

    asked by Dina on March 2, 2016
  51. chemistry

    Hydrogen gas can produced by the reaction between metallic aluminum and aqueous hydrochloric acid 2Al+6HCl----2AlCl3+3H2 Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes

    asked by shadow on November 19, 2013
  52. thermodynamics

    an automobile tire contains a certain volume of air at 30 psig and 70 degree fahrenheit. The barometric pressure is 29.50 in.Hg. If due to running conditions the temperature of the air in the tire rises to 160 fahrenheit, what will be the gage pressure?

    asked by chi on September 17, 2012
  53. vaporization lab

    A graduated cylinder containing some air is immersed in water. The height between the the water surface and the top of the water inside the graduated cylinder is 106mm. Calculate the correction that must be added to the barometric pressure to find the

    asked by mmeas on November 29, 2010
  54. physics

    A horizontal pipe (Venturi Tube) 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 2.0 x 105 Pa and the pressure in the smaller pipe is 5.0 x 104 Pa, at what rate does water flow

    asked by Anonymous on May 30, 2016
  55. Chemistry

    A vessel of 9.49 L in volume contains 3.37 L of pure water at 25¡ÆC. A partial pressure of 4.73 atm of CO2 is quickly injected into the space above the water. Calculate the partial pressure of carbon dioxide remaining once the solution has become

    asked by Sally on February 2, 2007
  56. (12)Chemistry - Science (Dr. Bob222)

    Calculate delta E for a process in which 88.0 g of nitrous oxide gas (N2O) is cooled from 165 ˚C to 65 ˚C at a constant pressure of 5.00 atm. The molecular weight of nitrous oxide is 44.02 g/mol, and its heat capacity at constant pressure, Cp, is 38.70

    asked by Ana on May 8, 2014
  57. Chemistry

    A vessel of 9.49 L in volume contains 3.37 L of pure water at 25¡ÆC. A partial pressure of 4.73 atm of CO2 is quickly injected into the space above the water. Calculate the partial pressure of carbon dioxide remaining once the solution has become

    asked by Sally on February 2, 2007
  58. physics

    A horizontal pipe (Venturi Tube) 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 8.0 x 105 Pa and the pressure in the smaller pipe is 3.0 x 104 Pa, at what rate does water flow

    asked by Anonymous on June 1, 2016
  59. chemistry

    A mixture of CH4(g) at 0.500 atm and O2(g) at 0.750 atm is present in a 3.00-L container at 28°C. The mixture is ignited by a spark and reacts according to the equation provided below. What is the total pressure in the container, now at 44°C, after the

    asked by geoff on October 3, 2006
  60. physics

    Many cultures around the world still use a simple weapon called a blowgun, a tube with a dart that fits tightly inside. A sharp breath into the end of the tube launches the dart. When exhaling forcefully, a healthy person can supply air at a gauge pressure

    asked by paro on April 5, 2010
  61. Chemistry

    Using the reaction and the E∘ given below 2Co^3+(aq)+2Cl^−(aq)→2Co^2+(aq)+Cl2(g) E∘=0.46 V what is the cell potential at 25 ∘C if the concentration are [Co^3+]= 0.565M , [Co^2+]= 0.554M , and [Cl^−]= 0.838M and the pressure of Cl2 is PCl2=

    asked by Aria on June 21, 2013
  62. Physics

    On a cool morning, when the temperature is 13 C, you measure the pressure in your car tires to be 30 psi. After driving 50 mi on the freeway, the temperature of your tires is 42C. What pressure will your tire gauge now show? T1 = 13 C T2 = 42 C P1 = 30 psi

    asked by ana on November 19, 2009
  63. science

    Which of the answer choices is a true statement about the properties of an enclosed gas? (Select all that apply) if a gas pressure remains constant, then increasing the temperature of a gas will increase its volume if the gas temperature remains constant,

    asked by malia on August 23, 2017
  64. Chemistry

    Two closed vessels of equal volume both with pressure p1 and temperature t1 are connected to each other by tube with negligible volume. If the temperature maintained of both vessels is then changed to t1 and t2 respectively what is the pressure in the

    asked by Yuktee on July 7, 2016
  65. Math

    The volume of a gas varies inversely as applied pressure if the pressure acting on a 45m^3 of gas is lowered from 3 atmospheres to 2 atmospheres what new volume does the gas occupy

    asked by M on April 15, 2015
  66. Chem.

    A gas bottle contains 0.250 mol of gas at 0.973 bar pressure. If the final pressure is 1.165 bar, how many moles of gas were added to the bottle?

    asked by John on June 4, 2015
  67. chemistry

    1. A gas cylinder contains 0.722 mL of hydrogen gas at a pressure of 10.6 atm. If the gas is used to fill a balloon at a pressure of 0.960 atm, what is the volume of the filled balloon?

    asked by Megan on October 28, 2014
  68. Jennifer

    I asked this question yesterday and it was answered, but I still have a question on it. Standard entropies for substances are defined at a pressure of exactly 1 bar in some books or exactly 1 atm(760 torr) in different books. For gases, this correction

    asked by Chemistry on April 4, 2007
  69. Physics

    A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=2×10^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides with the ground, and

    asked by MAths lover Please Helppppp on April 30, 2013
  70. Chemistry

    A mixture of three gases has a total pressure of 1380 mm Hg at 25 degrees celsius. If the mixture contained 56 grams CO2, 3.04 mol CO and 9.03 X 10^23 atoms of Argon, the partial pressure of argon would be about? First I did 9.03e23 * 760/1 = 2.26e22 and

    asked by Hannah on January 15, 2012
  71. Chemistry

    A mixture of He, Ne. And Ar has pressure of 16.1 atm at 28.0c. If the partial pressure of He is 3.05 atm and that of Ar is 1.16 atm, what is the partial pressure of Ne?

    asked by Ciara on May 4, 2016
  72. science

    3.A weather station is located 300 miles directly east of a second station. Winds at the eastern station are blowing from the south. Winds at the western station are blowing from the north. What is true about the weather system near these two locations? A.

    asked by Angelina on March 14, 2015
  73. chemistry

    If the initial pressure of SO3(g) is 4.775 atm, calculate the % of SO3(g) left over after the reaction reaches equilibrium according to the balanced equation. The value of Kp at 1000 K is 24.40. The initial pressure of the reaction products is 0 atm.

    asked by bme1 on April 7, 2010
  74. science

    Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is 1.00 g mL-1, and assume no

    asked by Jane Smith on June 5, 2015
  75. chemistry

    The following equilibrium exists in a closed container: N2(g) + O2(g) = 2NO(g), ΔH = +181 kJ/mol. Which of the following perturbations would favor the formation of NO(g)? (practice MCAT question from The Princeton Review MCAT Science Workbook, 2009

    asked by danny on February 26, 2015
  76. chemistry

    a pressure of 96.5Kpa is exerted by a mixture of nitrogen gas and water vapor in a equilibrium with liquid water at 18 degree celcius , what is the partial pressure exerted by the nitrogen gas?

    asked by nimmy on November 7, 2012
  77. Physical Science

    During a storm, the wind exerts a 150-N force on a window that measures 1.00 m by 0.50 m. The outside air pressure is 101 kPa. What pressure, in pascals, does the wind exert on the window? a. 75 Pa b. 150 Pa c. 1.5 x 10^3 Pa d. 3.0 x 10^2 Pa e. 3.0 x 10^5

    asked by Ariel on March 21, 2012
  78. phsical science

    a tire contains air ata pressure of 2.8 bar at 10 degree celsius.if the tires volume is unchanged what will the air pressure in it be when the tire warms up to 35 degree celsius if the car is driven.

    asked by natalie on June 20, 2012
  79. chemistry

    2H2O(l)=2H2(g) +O2(g) the stress is an increase in pressure. If there is an increase in pressure, the reaction would go to the side of fewer moles. Even though the left side has no moles of gas, is the result still shifting to the left

    asked by bme1 on April 24, 2010
  80. physics

    A volume of 140 cm3 of an ideal gas has an initial temperature of 20°C and an initial pressure of 1 atm. What is the final pressure if the volume is reduced to 120 cm3 and the temperature is raised to 40°C?

    asked by Sue on October 29, 2016
  81. physics

    The figure shows a nozzle on a hose carrying water. If the pressure at Point 1 is 290 x 10^3 Pa, the velocity 0.64 m/s, and the diameter 20 cm. Given that the diameter at point 2 is 1.4 cm, what is the velocity at point 2? v_2 = What is the pressure at

    asked by john on April 7, 2014
  82. Physics

    A certain amount of gas has a volume of 4000cm^3 at a temperature of 27 degree celsius and a pressure of 1.2 atmospheres. If the pressure is kept constant, find the volume of the gas if it is heated to 60 degree celsius. Please tell me what formula should

    asked by Hera on November 15, 2015
  83. Chemistry

    PLEASE HELP!! On a clear day at sea level, with a temperature of 25 °C, the partial pressure of N2 in air is 79 kPa and the concentration of nitrogen in water is 5.3 x 10-4 M. When the partial pressure of N2 is ________ kPa, the concentration in water is

    asked by Henry on May 25, 2012
  84. Chemistry

    A tank of gas at 21 degrees C has a pressure of 1.0 atm. Using the data in the table answer the following questions. Explain your answers A. If the tank contains carbon tetrafluoride, CF4 is the liquid state also present? B. If the tank contains butane,

    asked by Lauren on February 4, 2008
  85. Chemistry

    A tank of gas at 21 degrees C has a pressure of 1.0 atm. Using the data in the table answer the following questions. Explain your answers A. If the tank contains carbon tetrafluoride, CF4 is the liquid state also present? B. If the tank contains butane,

    asked by Lauren on February 3, 2008
  86. chemistry

    A cylinder is filled with 10.0L of gas and a piston is put into it. The initial pressure of the gas is measured to be 200.kPa. The piston is now pushed down, compressing the gas, until the gas has a final volume of 3.10L. Calculate the final pressure of

    asked by lady gaga on October 16, 2018
  87. chemistry

    A cylinder is filled with 10.0L of gas and a piston is put into it. The initial pressure of the gas is measured to be 200.kPa. The piston is now pushed down, compressing the gas, until the gas has a final volume of 3.10L. Calculate the final pressure of

    asked by Alexander on October 16, 2018
  88. Chemisrty

    Determine which law is appropriate for solving the following problem. What volume will 1.56 liters of a gas at 27°C and 745 mmHg of pressure occupy at 100°C and 700 mmHg of pressure? Law used: Boyle's Law Charles' Law Combined Gas Law

    asked by Angel on October 19, 2011
  89. science

    what would be the weight of the following items in the chemistry lab round to nearest tenth 3.4 kg of lead = _ newtons 390 g of copper = _ newtons 6820 cm3 of water = _ newtons

    asked by suzanna on January 22, 2010
  90. College Algebra

    Theres this chemistry problem im getting stuck in because i'm confusing myself with the math. Equation given = %O2 saturation = 100 x (pO2/(pO2 + K) %O2 = 35 K = 1.51 how do I calculate pO2?? I can't seem to cancel them out correctly. Answer = 0.813

    asked by James on April 16, 2013
  91. chemistry

    The pressure of a mixture of H2 & N2 in container in 1200 torr.The partial pressure of N2 in the mixture is 300 torr.What is the ratio of H2 and N2 molecules in the mixture torr?

    asked by Randeep on October 19, 2015
  92. chemistry

    Determine the number of bromide ions in solution when 4.23 g of magnesium bromide and 1.21 g of potassium bromide are dissolved in 120mL of water. Please explain not sure how to even start this problem, thanks! chemistry - DrBob222, Wednesday, December 8,

    asked by Stacy on December 9, 2010
  93. Health

    1). Which three kinds of direct pressure do you experience most often? A: Persuasion, explanations, and put-downs are the three kinds of direct pressure I experience most often. 2). Which three kinds of indirect pressure do you experience most often? A:

    asked by Anonymous on October 17, 2013
  94. Chm

    Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.What is the partial pressure of nitrogen in air at atmospheric pressure (1 atm)? Assume ideal behavior.

    asked by Karina on October 10, 2008
  95. physics

    A sealed cylinder contains a sample of ideal gas at a pressure of 2.0 atm. The rms speed of the molecules is vO. (a) If the rms speed is then reduced to 0.90 vO, what is the pressure of the gas? (b) By what percentage does the speed of sound in the gas

    asked by zetty on August 12, 2017
  96. Chemistry-Please help

    Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules. A)What is the partial pressure of nitrogen in air at atmospheric pressure (1 atm)? Assume ideal behavior.

    asked by Rose on October 16, 2009
  97. chemistry

    An automobile tire contains air at a pressure of 200. kPa and 25°C. The tire and its air heat up during traveling. If the pressure increases to 250. kPa but the volume remains the same, what is the temperature of the air inside the tire?

    asked by hi on April 10, 2013
  98. Chemistry

    Look up the solubility of NaCl in both water and ethanol (in the CRC handbook of chemistry which i don't have access to, and any help would be appreciated) Consider the dissolution process, and competing intermolecular forces to account for the observed

    asked by James on February 18, 2012
  99. Chemistry

    Look up the solubility of NaCl in both water and ethanol (in the CRC handbook of chemistry which i don't have access to, and any help would be appreciated) Consider the dissolution process, and competing intermolecular forces to account for the observed

    asked by James on February 18, 2012
  100. Chemistry

    I need to make a calorimeter for my high school chemistry class. Any suggestions? I have a few ideas but I can't figure out how I would light the food on fire from inside the container. I have to burn the food and measure the heat through water. thank

    asked by Elizabeth on February 12, 2014