Search: barometric pressure of 765.7 mmHg is equivalent to 1.008 atm

Number of results: 11,327

Math
Andrea is shelving books in the school library. She places the books on the cart in order from lowest call number to the highest. In which answer are the numbers listed correctly A.765.16 738.26 776.83 724.98 B.724.98 738.26 765.16 776.83 C.738.26 776.83 765.16 724.98 D.738.26...
Tuesday, October 16, 2012 at 6:52pm by Jerald

Chem
Please tell me if these are right? A mixture of oxygen and helium is prepared for a scuba diver that will descend to 125 feet below the ocean surface. At that depth the diver breathes a gas mixture that has a total pressure of 8atm. If the particle pressure of the oxygen in ...
Monday, November 29, 2010 at 1:29pm by Lindsay

chemistry
A mixture of O2 and He is prepared for a scuba diver who is going to descend 200 ft below the ocean surface. At that depth, the diver breathes a gas mixture that has a total pressure of 7.00 atm. If the pressure of the O2 in the tank at 200 ft below the ocean surface is 1140 ...
Sunday, December 12, 2010 at 9:57pm by steph

chemistry
The vapor pressure of water at 80 degrees c is 355mmHg. A 100cm3 vessel contained wateraturated oxygen at 80 degrees c., the total gas pressure being 760 mmHg. The contents of the vessel were transferred by pumping to a 50cm3 vessel at the same temperature. What were the ...
Wednesday, October 26, 2011 at 9:22pm by el

chemistry
The half-life for the first-order decomposition of is 1.3*10^-5. N2O4--> 2NO2 If N2O4 is introduced into an evacuated flask at a pressure of 17.0 mmHg , how many seconds are required for the pressure of NO2 to reach 1.4mmHg ? i know that the half life equation is t1/2= ...
Tuesday, February 1, 2011 at 9:53pm by Anonymous

chemistry
yes but the reason is the conversion factor is what I posted below Dr.Bob's comment to clarify on that. thus mmHg(760atm/mmHg)= atm
Tuesday, April 29, 2008 at 7:53pm by ~christina~

Chemistry
A sample of argon gas has a volume of 715 mL at a pressure of 1.34 atm and a temperature of 144 Celsius. What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 622 mmHg and 321 K?
Saturday, May 15, 2010 at 4:45pm by Kelly

Chemistry - Urgent Please help!!
The problems: 0.0513 grams of Al (Wt. 27.0) was reacted with excess HCI to produce H2 according to the following balanced equation: 2 Al + 6 HCI ---> 2 AlCl3 + 3 H2 a) Determine the number of moles of H2 evolved from that quantity of Al when collected over water? 0....
Tuesday, April 23, 2013 at 7:01pm by Kishwa

Algebra
(7r-9s)7=(-35) 7 (9r+7s)9=85.9 7(7r-9s)=765 7(7r-9s)=-35.7 9(9r+9s)=765 7(7r-9s)=-245 9.9r+9.7s=765 7.7r-7.9s=-245 81r+63s=765 49r-63s=-245 81r+63s=765 49r-63s=-245 (81r+63s)+(49r-63s)=765.245 49r-63s=-245 1230r=520 49r-63s=-245 130r/130=520/130 49r-63s=-245 r=2^3-1 49r-63s=-...
Friday, August 20, 2010 at 6:00pm by Judy

Chemistry
A closed container is filled with oxygen. The pressure in the container is 435kPa . What is the pressure in millimeters of mercury? (i know that 1atm=760mm Hg=101,325 Pa) How do I use this to solve for the question? so: 435kPa*101,325=44,076,375Pa, & O2 = 32g/mol & you...
Saturday, October 20, 2007 at 9:33pm by leo

AP Chem - to Dr. Bob
I don't understand how to even start this problem: A mixture of H2(g), O2(g), and 2 mL of H2O is present in a 0.5 L rigid container at 25 degrees Celsius. The number of moles of H2 and the number of moles of O2 are equal. The total pressure is 1146 mmHg. Vapor pressure of ...
Tuesday, January 23, 2007 at 10:23pm by Belinda

Chemistry
If a gas has a volume of 400.0 cm cubed at a pressure of 755 mmHg and a temperature of 25 degrees celsius, what would be its pressure (in atm) at 85 degrees celsius if the volume is reduced to 50.0 cm cubed?
Monday, April 21, 2008 at 10:47am by Kate

Chemistry
The vapor pressure of an unknown substance is given at various temperatures. properties of the substance are: density of solid=1.375g/ml density of liquid= 1.150g/ml. freezing point= 275.0K boiling point=375.0 K How would i calculate the vapor pressure at 150.0K measured at ...
Tuesday, February 7, 2012 at 8:00pm by Gifty Ansah

math
Look for some low prime numbers as factors of both 765 and 2023. 2023 = 7 x 289 = 7 x 17 x 17 765 = 153 x 5 = 51 x 3 x 5 17 x 3 x 3 x 5 It looks like the only comon factor is 17. Cancel it out of the numerator and denominator
Sunday, November 11, 2007 at 2:12pm by drwls

AP Chem
Can someone please check these problems? 34. You fill a balloon with helium gas to a volume of 2.68 L at 23 degrees C and 789 mmHg. Now you release the balloon. What would be the volume of helium if its pressure changes to 632 mmHg but the temperature is unchanged? 3.35 L 38. ...
Wednesday, November 12, 2008 at 8:34pm by Anna

Chemistry
How many moles of a gas do you have if it is under 800.mmHg of pressure in a 500.mL flask at a temperature of 32 degrees fahrenheit?
Thursday, May 3, 2012 at 7:54pm by Lindsey

chemistry
If 22.0 of gas has a volume of 0.22 at 320 , what is its pressure in mmHg?
Saturday, April 6, 2013 at 2:50pm by amelia

chemistry
Hi, I really need help with my lab report because Im completely stuck. Its about the Ideal Gas behaviour. I am given the mass of Nano2 (0.5044g) the temperature of n2 gas (21.2 C) the temperature of water (21.9 C) the volume of n2 (186.1 ml) and the barometric pressure (753.06...
Tuesday, October 18, 2011 at 12:02am by Tamara

Chemistry
Give the physical state of CO2 under the following conditions: pressure = 4000 mmHg, temperature = 18 degrees F. show work!
Tuesday, September 6, 2011 at 7:18pm by Sarah

Barometric Pressure
Furthur to my recent question and thank you Bob. Had the 32 feet being 33 feet I would have considered this close enough to 10m. However I now understand there are many answers to the question of the decrease in barometric pressure with height all probably correct. Taking the ...
Tuesday, August 29, 2006 at 10:49am by mike

chemistry
When 25.0 g of Zn reacts, how many L of H2 gas are formed at 25 °C and a pressure of 854 mmHg?
Monday, April 19, 2010 at 4:22pm by kellie

Chemistry
How do I convert the atmospheric pressure = 30.17in to mmHg? also how do I convert to mm H2O?
Tuesday, October 21, 2008 at 4:42pm by Kate

Chemistry
If you converted a barometric pressure of 30.03, how would you convert to mm Hg and how would you convert that to mm H2O.
Thursday, October 14, 2010 at 12:31pm by Lorie

Chemistry 105
A sample of N20 gas has a density of 2.65 g/L at 298 K. What must be the pressure of the gas (in mmHg )?
Sunday, October 23, 2011 at 5:29pm by JULIE

chemistry
A 33.0g sample of nitrogen, N2 has a volume of 42.0L and a pressure of 640.mmHg. What is the temperature, in kelvins and degrees Celsius, of the gas?
Wednesday, April 24, 2013 at 4:05pm by John

Chem-organic, bio, intro
A gas mixture contains oxygen and argon at partial pressures of 0.60 atm and 425 mmhg. If nitrogen gas added to the sample increases the total pressure to 1250 torr, what is the partial pressure in Torr of the Nitrogen added? Steps for solving this problem are greatly ...
Sunday, October 16, 2011 at 3:20am by Ashleigh

Chemistry - Half-life
Phosphene decomposes to phosphorus and hydrogen in a first order mechanism. 4PH3(g) --> P4(g) + 6H2(g) This reaction's half-life is 35.0 s at 680 degrees C. If you had 520 mmHg of phosphene in an 8.00-L flask, how long does it take for the pressure in the flask to ...
Wednesday, April 25, 2012 at 5:17pm by Aria

chemistry
The volume of a flask is 300.0 mL, the pressure in the room is 770 mmHg and the temperature is 22.0°C. How many moles of CO2 are in the flask?
Tuesday, November 16, 2010 at 11:54am by Anonymous

chemistry
Nitroglycerine decomposes according the the equation: 4C3H5(NO3)3 -> 12 CO2 + 10 H2O +6N2 + O2. 15.0 g of nitroglycerine is placed in a 500 ml flask at 25.0 C. The vapor pressure of water at this temperature is 23.8 mmhg. Find the total pressure in the flask after the ...
Monday, March 15, 2010 at 3:28am by Ben

chemistry
a sample of vapor weighing 0.745 g filled a 250 ml flask when placed in a water bath at 98 degrees celsius. the barometric pressure that day was 753 torr. calculate the volume of the vapor at stp, and the weight of one mol of the volitile liquid
Monday, June 18, 2012 at 4:37pm by Anonymous

Chemistry
If 0.896g of a gas occupies a 250mL flask at 20 degree celcius and 760 mmHg of pressure, what is the molar mass of the gas?
Friday, August 6, 2010 at 7:53am by TangenT

chemistry
no, and I hope the anonymous person is not being mean.. What I posted above was the conversion for one part of the question, jerson. you convert the pressure (how I did it above, but using the numbers you have in the problem) Analyzing your problem because it seems you don'...
Tuesday, April 29, 2008 at 7:53pm by ~christina~

Chemistry
The normal boiling point of a liquid is A. the temperature at which all three phases are in equilibrium. B. the only temperature at which there can be equilibrium between the liquid and gas states. C. the temperature at which the vapor pressure equals 760 mmHg. D. the ...
Thursday, December 9, 2010 at 4:10pm by Jake

Chemistry
KClO3 decomposes in the presence of MnO2 to form oxygen gas, collected over H2O at 23.0 degrees C and a barometric pressure of 754.2 torr, as described in the experimental description. After the pressure of the oxygen gas is equalized with atmospheric pressure, the mass of ...
Wednesday, July 9, 2008 at 5:40pm by Anonymous

college chemistry!! need help now!!
An adult takes about 15 breaths per minute, with each breath having a volume of 500mL. if the air that is inhaled is "dry", but the exhaled air at 1 atm pressure is saturated with water vapor at 37 degree C(body temp), what mass of water is lost from the body in 1hr...
Sunday, October 19, 2008 at 9:51pm by CM

chemistry
a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid
Thursday, February 17, 2011 at 7:10pm by ella

chemistry
You memorize this. Standard pressure 101.3kPa 1 atm 760 torr 760 mmHg 14.6 psi 32.8 ft water
Wednesday, April 28, 2010 at 7:31pm by bobpursley

Chemistry
If you wanted to prepare 50.0 mL of hydrogen, collected over water at 25 C on a day when the barometric pressure was 730 torr, what mass of aluminum would you react with a hydrochloric acid? (Balance the equation first.) ___Al(s)+___HCl(aq)=___AlCl3(aq)+___H2(g)
Monday, April 8, 2013 at 12:05pm by Kate

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 reaction is ...
Tuesday, October 3, 2006 at 6:43pm by geoff

Chemistry
well, the moles will be proportional to pressure. Balance the equations: CH4+2O2>>CO2 + 2H20 **1 C2H6+7.5 O2>> 2CO2 + 3H2O **2 so in methane, one gets the same amount of CO2 as CH4 In the ethane, one gets twice as much. So,of the final pressure, the...
Friday, August 13, 2010 at 2:29am by bobpursley

physics (gas laws)
I have a packet of homework so I think I may post other questions that I'm stuck on later this weekend. So thats a heads up. This packet deals with Gas Laws. 1. Given 100 ml of dry gas measured at 37° C and 760 mmHg, what would be its volume at 60°C? I used Charle...
Saturday, January 26, 2008 at 9:08pm by abby

chemistry
the vapor pressure of ethanol at 20c is 44 mmHg and the vapor pressure of methanol at the same temperature is 94mmHg. A mixture of 30.0 g of methanol and 45.0 g of ethanol is prepared (and can be assumed to behave as an ideal solution). a.) calculate the vapor pressure of ...
Monday, January 30, 2012 at 10:37am by cassidy

chemistry
1 atmosphere of pressure is equivalent to
Monday, December 5, 2011 at 1:55pm by Anonymous

Chemistry
A 19.9mL volume of a hydrochloric acid solution reacts completely with a solid sample of magnesium carbonate, producing 183mL of CO2 that is collected over water at 24.0 degrees C and 738 torr total pressure. The vapor pressure for water at 24.0 degrees C is 22.39 mmHg. What ...
Thursday, April 18, 2013 at 7:18pm by Michelle

chemistry
Calculate the partial pressure (in atm) of propane in a mixture that contains equal weights of propane (C3H8) and butane (C4H10) at 18°C and 746 mmHg
Monday, November 21, 2011 at 10:17am by Anonymous

college math for teachers
Use the following sets to complete the givien statements in as many ways as possible. a= a,b,c,d b= e,f c=b,a,c,d d= 1,2,3,4 A. Sets _ and _ are not equivalent and not equal B. Sets _ and _ are not equivalent but are equal. C. Sets _and _ are equivalent but not equal D. Sets _...
Sunday, January 10, 2010 at 8:20pm by Sueann

math
I don't see how your formula is related to the data given in the question cost to Chris before any sales tax is added would be 100(.85)(.9) = 76.50 (the single discount equivalent to consecutive discounts of 15% and 10% i >985)(.9) = .765 Is there a sales tax of 6% ...
Wednesday, October 12, 2011 at 1:42pm by Reiny

CHM
Calculate the molecular weight of a small protein if a 0.32 g sample dissolved in 161 mL of H2O has an osmotic pressure of 9.0 mmHg at 25 degree celcius. (R=0.0821 L X atm/K X mol)
Sunday, January 13, 2013 at 5:59pm by Robby

chemistry
What is the vapor pressure of CS2(in mmHg) at 18.5degree C? Carbon disulfide, CS2, has Pvap= 100mm at -5.1 degree C and change in Hvap = 28.0 kj/mol .
Monday, January 25, 2010 at 9:03pm by Lauren

AP Chem
Help with these two please. 105. A radioactive metal atom decays (goes to another kind of atom) by emitting an alpha particle (He+2 ion). The alpha particles are collected as helium gas. A sample of helium with a volume of 12.05 mL was obtained at 765 mmHg and 23 Degrees C. ...
Wednesday, November 12, 2008 at 9:20pm by Anna

Chemistry
I live in an area of 1014 millibars barometric pressure and I have an imaginary balloon with 22 grams of CO2 and a temperature of 61 degrees Fahreheit. What is the volume of the gas in liters. I know to use the Ideal gas law but how do I convert millibars to atm for the "...
Thursday, April 22, 2010 at 11:26am by Robert

Physics QUIZ
Rising air cools as a result of a decrease in barometric pressure with altitude. (Lapse Rate) True/False? When an inflatable life jacket is inflated with a compressed air cylinder the air inside the now inflated life jacket is much colder than it was prior to inflation when it...
Saturday, December 9, 2006 at 2:01pm by ROB

Chemistry
a sample of carbon dioxide has a volume of 25.0L at 5.80 x 10^2 mmHg. what pressure would be needed to increase the volume to 55.5 L? assume constant temperature
Thursday, December 8, 2011 at 6:57pm by Colby

chemistry
A 150.0 mL flask contains 0.391 grams of a volatile oxide of sulfur. The pressure in the flask is 750 mmHg and the temperature is 22C. Is the gas SO2 or SO3?
Monday, March 14, 2011 at 12:47pm by Rachel

Chemisty
A student following the procedure described in this experiment collected the following data: Mass Mg,g 0.0243 volume of gas mL 25.5 barometric pressure, mm Hg 298 Calculate the value of the gas law constant, R. Please help me work this out, I have no idea. Thank you!
Monday, November 26, 2012 at 2:15pm by Sam

Chemistry
A 271-mL of a sugar solution containing 1.79g of the sugar has an osmotic pressure of 30.1 mmHg at 35.1 degrees C. What is the molar maas of the sugar?
Monday, October 18, 2010 at 5:51pm by John

physics
a) use the equation of continuity b) Use bernoullis equation, I can check your work. c) Change pressure in b to mmHg.
Tuesday, November 13, 2007 at 7:58pm by bobpursley

college Chemistry
An adult takes about 15 breaths per minute, with each breath having a volume of 500mL. if the air that is inhaled is "dry", but he exhaled air is 1 atm pressure is saturated with water vapor at 37 degree C(body temp), what mass of water is lost from the body in 1hr? ...
Sunday, October 19, 2008 at 8:37pm by CM

AP Chem
Would someone please check these for me? 52. In an experiment, you fill a heavy-walled 5.00-L flask with methane gas, CH4. If the flask contains 7.13 g of methane at 19 degrees C, what is the gas pressure? 2.14 atm 56. A 2.50-L flask was used to collect a 5.65-g sample of ...
Wednesday, November 19, 2008 at 11:22am by Anna

chemistry
Calculate the partial pressure of propane in a mixture that contains equal numbers of moles of propane (C3H8) and butane (C4H10) at 20 °C and 505 mmHg. (R=0.082 L-atm/K mol)
Thursday, May 3, 2012 at 11:28pm by Brandon

chemistry
The normal boiling point of acetone is 56.2 (degrees)C and the molar heat of vaporization is 32.0 kj/mol. At what temperature will acetone boil under a pressure of 50.0 mmHg?
Monday, June 21, 2010 at 2:07pm by Jim

Phase
http://en.wikipedia.org/wiki/Melting_point Question: A solid substance has a vapor pressure of 100 mmHg at the melting point (100C). Assuming an atmospheric pressure of 760 mmHg, describe the behavior of this solid as the temperature is raised from room temperature to its ...
Monday, November 13, 2006 at 10:10pm by Lance

Chemistry
Help-I'm really confused-The barometric pressure in my area is 1014 and the temperature is 61 degrees farhenheit. I am suppose to have an imaginary balloon that contains 22 grams of carbon dioxide. Calculate the volume in liters of the balloon using the gas law constant. ...
Wednesday, April 21, 2010 at 3:50pm by Robert

chemistry
The volume of a gas is 5.80 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.65 L? (The temperature remains constant.)
Monday, November 15, 2010 at 1:24pm by rasheedat

chemistry
A sealed flask contains 0.40 g of water at 28 deg. celsius. The vapor pressure of water at this temperature is 28.36 mmHg
Sunday, September 6, 2009 at 8:54pm by jeff

chemistry
An experiment shows that a 250mL gas sample has a mass of 0.433g at a pressure of 740 mmHg and a temperature of 29 C. What is the molar mass of the gas?
Monday, October 13, 2008 at 11:57am by Anonymous

Chem
A sample of co2 gas at 90.7 degree celsius has a volume of 300. ml at 810 mmHg. How many moles of co2 are present R=.08206 L atm/mol K 1 atm=760 mmHg
Monday, December 3, 2012 at 4:14pm by hanah

chemistry
Calculate the partial pressure of propane in a mixture that contains equal numbers of of moles of propane (C3H8) and butane (C4H10) at 20 degrees C and 844 mmHg. (R=0.082 L-atm/K mol)
Tuesday, April 10, 2012 at 10:09pm by Randy

physics
The guage pressure at the height h = ρgh the atmospheric pressure = 1.013•10⁵ Pa ρgh•760/1.013•10⁵ =1030• 9.8•0.61•760/1.013•10⁵=46.2 mmHg
Sunday, October 28, 2012 at 1:53am by Elena

chemistry
a tank contains helium gas at 490 mmHg, nitrogen gas at 0.75 atm, and neon at 520 torr. What is the total pressure in atm?
Wednesday, November 14, 2012 at 8:33pm by Lauren

Chemistry
A sample of gas has a mass of 0.555 g. Its volume is 119 mL at a temperature of 90 degrees C and a pressure of 744 mmHg. What is the molar mass of the gas?
Thursday, November 18, 2010 at 11:36pm by Kelsey

chemistry
Calculate the Molecular Weight (MW) of a hydrocarbon as if 0.5813 g of this gas completely fills a 250.0 mL flask at a temperature of 24.4 C and pressure of 742.6 mmHg. Show all work and assume ideal behavior.
Tuesday, August 28, 2012 at 7:40pm by Tori

Chemistry
Two Flasks containing the same inert gas are at the same temperature and pressure of 800 mmHg. One flask has volume of 1.0 L and the other, a volume of 2.0 L. Enough volatile liquid is injected into each of the flasks to allow phase equilibrium to be established. No leakage ...
Wednesday, January 31, 2007 at 6:16pm by Jason

Physics (correction)
Pressures in the head will be lower, not higher, because of the higher elevation than the measurement point. The number is also wrong: It should be 45 mmHg/13.6 = 3.3 mmHg lower I just wasn't thinking and apologize for the errors.
Friday, April 8, 2011 at 7:18pm by drwls

Science
1> What 2 types of electromagnetic energy have wavelengths of 0.76 cm? 2> What is the pressure at a depth of 3000 km inside the Earth? 3> How many inches of mercury are equivalent to 974.5 millibars of air pressure? 4> Jupiter's period of ...
Sunday, September 14, 2008 at 7:15pm by Lisa

Physics
Calculate the height of the brain above the heart for an animal with an additional blood pressure of 222 mmHg in the heart. Use ρ = 1.055 g/cm3 for the density of blood.
Saturday, January 19, 2013 at 4:11pm by Paulina

physics
Calculate the height of the brain above the heart for an animal with an additional blood pressure of 498 mmHg in the heart. Use ρ = 1.057 g/cm3 for the density of blood. ???????
Monday, February 6, 2012 at 9:40pm by lee

Chemistry
A gas occupied a volume of 3.50 L at 27 degrees celcius and 400.0 mmHg. What is the new temperature if the pressure changes to 0.789 atm and the volume is decreased to 2.50 mL
Wednesday, January 12, 2011 at 8:04pm by Tori

Chemistry
At 10 degree Celsius a sample of carbon dioxide gas has a volume of 25.5 mL under pressure of 758 mmHg. What would the volume of the CO2 sample be at STP?
Friday, November 5, 2010 at 9:44pm by Amber

Chemistry
What is the pressure in millimeters of mercury of 0.0155 mole of He gas with a volume of 206 mL at a temperature of 30 degrees C? I used the ideal gas law and ended up with 1.87 mmHg but it said that was wrong. Please help.
Saturday, December 3, 2011 at 7:06pm by Lisa

Chem
Chloroform, CHCl3, was once used as an anesthetic. In spy movies it is the liquid put in handkerchiefs to render victims unconscious. Its vapor pressure is 197 mmHg at 23 degrees C and 448 mmHg at 45 degrees C. Estimate its a) heat of vaporization b) normal boiling point I ...
Monday, March 19, 2007 at 8:58pm by Chris

chemistry please help
What is the total mmHg pressure in of a gas mixture containing argon gas at 0.25atm , helium gas at 385mmHg , and nitrogen gas at 345torr. ? sorry i didnt relize i left them out.
Thursday, September 6, 2012 at 11:10am by katy

chemistry
10.0 grams of carbon dioxide and 20.0 grams of oxygen are mixed in a 50.0 L container at 30.0 degrees celcius. What is the pressure of this mixture in mm Hg? I defined my variables. so i had Mass=30.0g Volume=50.0L Temperature=303 Kelvin pressure=x. then i used PV*GFM=mRT. (x...
Tuesday, March 18, 2008 at 6:49pm by Miley

algebra
It's spelled nickels. Let x = number of nickels (originally) let y = number of dimes (originally) 5x + 10y = 765 5*(x + 35) + 10*(2y) = 1430 5x + 20y = 1430 - 175 = 1255 The x terms are easily eliminated 10 y = 490 y = 49 5x = 765 - 490 = 275 x = 55
Thursday, June 9, 2011 at 9:09pm by drwls

Chemistry II
The mass of a particular gas is 3.562 g. If the temperature of the gas in a 126.4 mL vessel is 97.6oC, and the atmospheric pressure is 752.5 mmHg, what is the molar mass of the gas?
Tuesday, September 1, 2009 at 6:46am by Anonymous

chemistry PLEASE HELPPPP
10.0 grams of carbon dioxide and 20.0 grams of oxygen are mixed in a 50.0 L container at 30.0 degrees celcius. What is the pressure of this mixture in mm Hg? I defined my variables. so i had Mass=30.0g Volume=50.0L Temperature=303 Kelvin pressure=x. then i used PV*GFM=mRT. (x...
Tuesday, March 18, 2008 at 8:21pm by Miley

physical science
Although we often say "converting to kilograms" or to some other units, it is not realy converting in the sense of changing the quantity. Everything stays the same, so you should think of this rewriting the expression like you can rewrite a mathematical expression. ...
Wednesday, August 13, 2008 at 9:25pm by Count Iblis

Chemistry
OK. I don't know what you did. You must have generated the H2 gas and measured the total pressure at the end. So total P - pH2O - initial P would be P of dry H2. If so what you have looks ok to me. The vapor pressure of the water must be the 0.0313 (that's equivalent ...
Sunday, July 15, 2012 at 12:07am by DrBob222

chemistry
A student generates H2(g) over water using the reaction between zinc and hydrochloric acid Zn(s)+ 2HCl(aq)---> ZnCl2(aq)+ H2(g) Data: Mass of vial and zinc 15.5082 mass of vial 15.3972 mass of zinc 0.111 final burette reading 45.30mL barometric pressure: Patm 100.6kPa ...
Wednesday, November 23, 2011 at 11:37pm by Yuli

chemistry
a substance has a vapor pressure of 35.0 mmHg at 52.0 degrees Celsius and 70.0 mm Hg at 77.0 degrees Celsius. What is the heat of vaporization for this substance?
Sunday, September 30, 2012 at 5:57pm by Bru

Chemistry
Convert a gas pressure of 485 cmHg to atmospheres. (cm not mm!)Wouldn't you simple convert cm to mm (4850) and divide by 760 mmHg?
Wednesday, October 20, 2010 at 8:00am by lavonne

Physics
The modern Boeing 747 passenger jet airplane cruises at a speed up to 900 km/hr, at an altitude of 11,000 m. The cabin pressure is maintained equivalent to the atmospheric pressure at an altitude of 2,000 m. This is called the "cabin altitude". The pressure as a ...
Sunday, January 27, 2013 at 4:01am by Francisco

CHEMISTRY
At 285mmHg +25 degrees celsius,a gas sample has a volume of 2270ml. what is the final pressure in mmHg at a volume of 1250ml and a temperature od 175 degrees celsius?
Saturday, August 20, 2011 at 12:34pm by TERI

math
http://www.google.com/#sclient=psy&hl=en&source=hp&q=2445-765&pbx=1&oq=2445-765&aq=f&aqi=&aql=1&gs_sm=e&gs_upl=26425l26425l0l27078l1l1l0l0l0l0l179l179l0.1l1l0&bav=on.2,or.r_gc.r_pw.&fp=b8901692fe56d969&biw=853&bih=564
Saturday, July 30, 2011 at 9:08pm by Ms. Sue

College Chemistry
Stuck on plugging info into formula, please show set up-At 10 degrees C carbon dioide gas has volume of 25.5 mL under pressure of 758 mmHg, what would volume of CO2 be at STP?
Tuesday, November 9, 2010 at 6:08pm by Sandra

college mathematics
8. Determine which, if any, of the three statements are equivalent. Give a reason for your conclusion. Show complete work. I.) If the dog wags its tail, then the dog is not calm. II.) Either the dog does not wag its tail or the dog is not calm. III.) If the dog is not calm, ...
Tuesday, February 7, 2012 at 12:17pm by cody

Chemistry help!!
Mole percent composition of earths dry atmosphere is 78% N2, 21% O2 and 1.00% Ar. Using the atmospheric pressure you recorded in the lab during this experiment (757.5 mmHg) and an ambient temperature of 25C, calculate partial pressures of these 3 gases.
Tuesday, July 3, 2012 at 11:07am by Ally

chemistry
a gas occupies a volume of 5.00L at 27 degreesC and 742 mmHg. if the volume is held constant and the temperature is increased by 2 degreesC, what is the final pressure of the gas?
Tuesday, December 11, 2012 at 11:40pm by Nessa Marie Mejares

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