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

Number of results: 11,433

Chemistry
Is barometric pressure of 765.7 mmHg is equivalent to 1.008 atm? I'm confused.
Wednesday, September 2, 2009 at 12:32am by Kedia

Chemistry
I'm trying to find the dry gas pressure of H2 in mmHg. The barometric pressure is 765.3 mmHg, the vp of H20 is 23.76 mmHg and the gas collected was 25.6 mL. this is what i did. 765.3 mmHg - 23.76 mmHg - (25.6 Ml/13.6 mmHg) = 739.66 = 740 mmHg 93 sig figs). Then I have to ...
Wednesday, September 26, 2007 at 1:21pm by Clay

physics conversions
can you check my answers. 1. What is the corresponding barometric pressure values in mmHg if the barometric pressure is reported as: 29.7 inHg. = 754.38mmHg 31.8 inHg. = 807.72mmHg 26.4 inHg. = 670.56mmHg 22.1 inHg. = 561.34mmHg 34.8 inHg. = 883.92mmHg 2. What are the ...
Monday, January 28, 2008 at 4:21pm by james

physics conversions check my answers
can you check my answers. 1. What is the corresponding barometric pressure values in mmHg if the barometric pressure is reported as: 29.7 inHg. = 754.38mmHg 31.8 inHg. = 807.72mmHg 26.4 inHg. = 670.56mmHg 22.1 inHg. = 561.34mmHg 34.8 inHg. = 883.92mmHg 2. What are the ...
Monday, January 28, 2008 at 11:20pm by james

chemistry
A sample of O2 gas is collected over water at 23C at a barometric pressure of 751 mmHg (vapor pressure of water at 23C is 21 mmHg). The partial pressure of O2 gas in the sample collected is: (a) 21 mmHg (b) 751 mm Hg (c) 0.96 atm; or (d) 1.02 atm The answer is (c). Not sure ...
Wednesday, November 2, 2011 at 4:36pm by Holly

Chemistry
A 70.8mL sample of "wet" O2(g) is collected over water at 29.9 degrees Celsius at a barometric pressure of 743 mmHg. The vapour pressure of water at 29.9 degrees Celsius is 31 mmHg. What is the mole fraction of O2 in the gas collected? So i found the partial pressure...
Saturday, October 16, 2010 at 5:10pm by Jon

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 water = 17.5 mmHg at ...
Wednesday, October 12, 2011 at 8:12pm by Duane

chemistry
Pressure of pure A at 85 (degrees)C is 500 mmHg, what is the vapor pressure of pure B at this temperature? A)336 mmHg B)960 mmHg C)576 mmHg
Sunday, June 27, 2010 at 6:58pm by jimbo

Chemistry
I have to chane the barometric pressure in my area to ATM. We have to look at the U.S. Weather map that gives the barometric pressure. I live in an area that has shows 1016 for barometric pressure. First is 1016 in millibars or what and secondly how do I convert that to atm so...
Tuesday, May 18, 2010 at 8:35pm by Hannah

Chemistry
Data:O2 gas production Tria1 Trial 2 Mass of tube and contents prior to O2 production (g) 24.5196 g 24.4328 g Mass of tube and contents after O2 production (g) 24.4315 g 24.3513 g Mass of O2 generated (g) 0.0881 g 0.0815 g Moles of O2 generated (mol) 0.00275 mol 0.00255 mol ...
Wednesday, October 17, 2007 at 9:41pm by Taylor

chemistry
I figured it out. P total=751 mmHg. Partial pressure O2 + partial pressure H2O=751 mmHg. partial pressure O2=730 mmHg and 1atm/760 mmHg=x atm/730 mmHg. answer=0.96 atm! It was so easy I missed it....
Wednesday, November 2, 2011 at 4:36pm by Holly

Chemistry
Data:O2 gas production Tria1 Trial 2 Mass of tube and contents prior to O2 production (g) 24.5196 g 24.4328 g Mass of tube and contents after O2 production (g) 24.4315 g 24.3513 g Mass of O2 generated (g) 0.0881 g 0.0815g Moles of O2 generated(mol) 0.00275 mol 0.00255 ...
Wednesday, October 17, 2007 at 9:41pm by Taylor

Bio 207
If barometric pressure is 480mmhg, what is the partial pressure of 02 in inspired air? At this pressure, what % of 02 would you have to gave in the air you are breathing so that the inspired p02 would be normal? ( 160 mmhg)
Monday, July 30, 2012 at 3:49pm by Sharon

chemistry
What is the effect of the following on the separation of the mixture? a. A soluble, nonvolatile impurity b. a decrease in barometric pressure c. an increase in barometric pressure d. rapid heating rate
Thursday, October 7, 2010 at 7:04pm by Anonymous

Physiology
If barometric pressure is 480mmhg, what is the partial pressure of 02 in inspired air? At this pressure, what % of 02 would you have to gave in the air you are breathing so that the inspired p02 would be normal? ( 160 mmhg)
Monday, July 30, 2012 at 12:54pm by Sharon

chemistry
What is the effect of the following on the separation of the mixture(hexane and toluene)? a. A soluble, nonvolatile impurity b. a decrease in barometric pressure c. an increase in barometric pressure d. rapid heating rate
Monday, November 8, 2010 at 5:33am by Anonymous

CHEMISTRY- vapour pressure
Bromobenzene, C6H5Br, and chlorobenzene, C6H5Cl, form essentially ideal solutions in all proportions. At 100°C, the equilibrium vapour pressure of bromobenzene is 137mmHg and that of chlorobenzene is 285mmHg. Calculate the equilibrium vapour pressure above a 17.6% (w/w) ...
Saturday, October 9, 2010 at 7:38am by lulu

chem
The reaction AB(aq)->A(g)+ B(g)is second order in AB and has a rate constant of 0.0282 M^{-1} s^{-1} at 25 Celsius. A reaction vessel initially contains 250 mL of 0.105 M AB which is allowed to react to form the gaseous product. The product is collected over water at 25...
Friday, January 13, 2012 at 11:15pm by Yuni

Maths *have answer, want method* Urgent!
Suppose that the blood pressure of the human inhabitants of a certain Pacific island is distributed with mean, \mu = 108 mmHg and standard deviation , \sigma = 6 mmHg. According to Chebyshev's Theorem, at least what percentage of the islanders have blood pressure in the ...
Saturday, April 13, 2013 at 12:40pm by Orla

chemistry
We have a tank that contains O2 at 146 mmHg, N2 at 146 mmHg, and CO2 at 138 mmHg. We then add 135 mmHg of Ar. What is the pressure in the tank?
Monday, May 6, 2013 at 11:13am by Jenny

chemistry
We have a tank that contains O2 at 146 mmHg, N2 at 146 mmHg, and CO2 at 138 mmHg. We then add 135 mmHg of Ar. What is the pressure in the tank?
Sunday, May 5, 2013 at 4:31pm by Jenny

Chemsitry
What is the phase of a compound at 600 mmHg and 32oC if it melts at 35oC when pressure is 760 mmHg? Its triple point occurs at 200 mmHg and 36oC.
Thursday, April 8, 2010 at 6:58pm by Dan

Chemistry
Any help would be great on the below problems. I am not sure where to begin. How do I solve these? Do I use a formula? 1. You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe how you would make the desired ...
Tuesday, August 17, 2010 at 11:14pm by Ashley

Chemistry
If a sample of Helium gas is collected over water, what is the pressure of the dry gas alone if the total pressure is 760.0 mmHg and the partial pressure of water is 20.0 mmHg?
Sunday, January 10, 2010 at 6:57pm by Jane

Chemistry
A sample of oxygen is collected over water at a total pressure of 592.2 mmHg at 27C. The vapor pressure of water at 27C is 26.7 mmHg. What is the partial pressure of O2? ***Please show steps
Wednesday, March 7, 2012 at 9:43pm by Cindy

Chemistry
yeah your off...180 mmHg is not the gas pressure. Instead, 180 mmHg is the difference between the gas pressure and the atmospheric pressure. i have the same problem...and i cant figure it out! your on the right track though!
Sunday, October 21, 2007 at 4:58pm by Major

Chemistry
A gas mixture with a total pressure of 750 mmHg contains each of the following gases at the indicated partial pressures: , 265 mmHg; Ar 134 mmHg; and ,O2 157 mmHg; The mixture also contains helium gas.
Tuesday, November 9, 2010 at 12:27am by Lisa

chem
if you mean 30C then here is the answer Air pressure = 763mmHg 298.7K ethanol pressure ? mmHG 303 K Total pressure of water= 980 mmHG 303 K you need to change air pressure to be based on 303 K after its been placed or immersed in water. P1/T1= P2/T2 (762 X 303)/ 298.7 = ? ? = ...
Sunday, April 26, 2009 at 6:51pm by ........

Chemistry 105
A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123 mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas...
Sunday, October 23, 2011 at 5:34pm by JULIE

Chemistry
A sample of iron reacted with hydrochloric acid. The liberated hydrogen occupied 40.1 mL when collected over water at 27 C at a barometric pressure of 750 torr. What is the mass of the sample of iron? (Because of the collection of gas over water, the vapor pressure of the ...
Monday, April 8, 2013 at 12:03pm by Kate

Chemistry
An open-ended mercury manometer is used to measure the pressure exerted by a trapped gas as shown in the figure. Atmospheric pressure is 750. mmHg. What is the pressure (in mmHg or torr) of the trapped gas if h =23 cm? I got 893.462, but that wasn't right. Can someone help...
Wednesday, December 5, 2012 at 10:47am by Anonymous

Chem
You measure two different pressures of the sealed vial containing air and ethanol at two different temperatures; 89027 mmHg at 27C and 90853 mmHg at 40C . From earlier measurements you found that the pressure of air at 27C is 76005 mmHg . Calculate the VPethanol at both ...
Monday, October 8, 2012 at 2:29pm by Anonymous

math
well, memorize this standard pressure is 101.3kPa 760 torr 760 mmHg 14.5 PSI 1 atm now, since all these are equal 2psi/14.5PSI=x mmHg/760mmHg solve for x mmHg then x mmWater= x mmHg* specificgravityHg now, convert xmmWater to inches x inch water= 25.4*xmmWhater
Saturday, December 11, 2010 at 8:15pm by bobpursley

chemistry
For A pressure of 25.7 inHg would be how many kilopascals? This is the answer I received: 25.7 mmHg x (101.325 kPa/760.0 mmHg) The mmHg cancel each other out So 98.659 kPa My Question is I started out with inHg, and not mmHg. Would it be the same since I'm starting with ...
Thursday, November 24, 2011 at 12:10pm by Sandy

Chemistry
The dry gas pressure is pressure inside the tube - watervapor pressure. The pressure has nothing to do with the volume collected, unless you are supporting a column of water, then you have to adjust barometric pressure for the height of the column, it does not appear you had ...
Wednesday, September 26, 2007 at 1:21pm by bobpursley

Chem
Can someone check these homework answers please? 32. The barometric pressure measured outside an airplane at 9 km was 259 mmHg. Calculate the pressure in kPa. 34.5 kPa 36. A diving bell is a container open at the bottom. As the bell descends, the water level inside changes so ...
Tuesday, November 11, 2008 at 9:46pm by Anna

college chemistry
A sample of helium occupies 1521 mL at 719 mmHg. Assume that the temperature is held constant and determine a) the volume of the helium at mmHg. b)the pressure, in mmHg, if the volume is changed to 315mL
Tuesday, October 23, 2012 at 11:10pm by Haley

Chemistry
A weather balloon is inflated to a volume of 29.6 L at a pressure of 734 mmHg and a temperature of 27.0 C. The balloon rises in the atmosphere to an altitude, where the pressure is 360 mmHg and the temperature is -13.6 C.
Monday, November 8, 2010 at 11:26pm by Lisa

Math
7.5x102 = 765 let the amount of 11.98% mixture be x let the amount of 7.3% mixture be 765-x .1198x + .073(765-x) = .105(765) solve for x
Tuesday, November 22, 2011 at 10:28pm by Reiny

Chemistry
I forgot in my previous question to say 1014 millibars. The question is I live at 1014 millibars for barometric pressure and temp. is 61 degrees Fahrenheit. I have an imaginary balloon that contains 22 grams of CO2-what is the volume in liters of the balloon using the gas ...
Wednesday, April 21, 2010 at 9:35pm by Robert

chemistry
How many grams of NaCl must be added to 225.0 g of H2O at 45 °C to lower the vapor pressure of water by 2.21 mmHg? The vapor pressure of pure water is 71.93 mmHg at 45 °C.
Saturday, April 20, 2013 at 1:21am by Kelly

PHYSICS
WHEN THE BAROMETRIC PRESSURE IS 14.9LBS\IN AND THE PRESSURE GAGE ON A TIRE READS 34.6LBS\IN WHAT IS THE ABSOLUTE PRESSURE INSIDE THE TIRE
Monday, October 1, 2012 at 2:34pm by PATRICK

Barometric Pressure
I have been studying the reduction in barometric pressure and temperature with height and am happy with my findings ref temperature. With regard to pressure I read that for every increase in altitude of 32 feet the pressure drops 1 mb. For every increase in height of 1000m the...
Monday, August 28, 2006 at 4:08am by mike

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
Wednesday, October 19, 2011 at 3:18pm by Angel

Chemistry
A gas occupied 870 ml under a pressure of 720 mmHg at a temperature of 17C ,the next day it was measured under a pressure 0f 750 mmHg at a temperature of 21C.what volume did the gas occupy under these condition
Sunday, March 11, 2012 at 12:49pm by faisal

chemistry
Can someone please help me with some steps towards solving this problem? A glass tumbler containing 243.3cubic centimeters of air at 1.00e2kPa (barometric pressure) and 20Celsius is turned upsde down and immerse in a body of water to a depth o 20.5m. The air in the glass is ...
Friday, June 19, 2009 at 3:48pm by Juggernaut

Chemisty
Surely you haven't typed all of the question. What gas is collected? Is it collected over water or not. What is the temperature? The pressure surely is not 298 mm Hg. Use PV = nRT. P = (mmHg - mmHg vapor pressure H2O/760) V = 0.0255 n = 24.3/atomic mass Mg R = solve for ...
Monday, November 26, 2012 at 2:15pm by DrBob222

7th grade weather
Try some of the following links: http://search.yahoo.com/search?fr=mcafee&p=how+to+calculate+barometric+pressure Sra
Thursday, June 2, 2011 at 12:30am by SraJMcGin

chem
the pressure 15 meters under water is 248 kPa what is the pressure in atm what is the pressure in mmHg
Tuesday, November 13, 2012 at 12:05am by christie

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 a trapped gas as ...
Monday, December 3, 2012 at 8:33pm by Anonymous

chemistry
Carbon disulfide,CS2, is a volatile, flammable liquid. It has a vapor pressure of 426.6 mmHg at 29.8C and 760.0 mmHg at 46.5C. What is the heat of vaporization of this substance?
Monday, January 17, 2011 at 2:57pm by patty

Chemistry
The vapor pressure of pure ethanol at 20 degrees C is 44 mmHg, and the vapor pressure of pure methanol at the same temperature is 94 mmHg. In a solution of the two, the mole fraction of ethanol is .439; the mole fraction for methanol is .561. Calculate the vapor pressure of ...
Monday, October 18, 2010 at 5:38pm by Stephany

AP CHEM
2-propanol has a delta Hvp of 701 J/g and a vapor pressure of 31.6 mmHg at 20.0 degrees C. Estimate the normal boiling point of this alcohol in degrees C. i used the clasius-clayperon equation and this is what i have so far. ln (31.6 mmHg/760 mmHg)= (-701 J/g)/8.314 J/g C (1/ ...
Thursday, January 24, 2008 at 3:24am by John

Ap Chemistry
2-propanol has a delta Hvp of 701 J/g and a vapor pressure of 31.6 mmHg at 20.0 degrees C. Estimate the normal boiling point of this alcohol in degrees C. i used the clasius-clayperon equation and this is what i have so far. ln (31.6 mmHg/760 mmHg)= (-701 J/g)/8.314 J/g C (1/ ...
Wednesday, January 23, 2008 at 6:46pm by John

chemistry
A pressure of 25.7 inHg would be how many kilopascals? I received an answer but the person who helped me used mmHg. How do I convert inHg into mmHg to solve my questions. Help please
Thursday, November 24, 2011 at 12:32pm by Sandy

chemistry
A very flexible helium-filled balloon is released from the ground into the air at 20 degree C. The initial volume of the balloon is 5.00 L, and the pressure is 760 mmHg. The balloon ascends to an altitude of 20km, where the pressure is 76.0 mmHg and the temperature is -50 ...
Saturday, October 20, 2012 at 8:52am by Liang

chemistry
Chlorine gas is collected in a gas collecting tube above water. The gas is at 20oC and the total pressure in the tube is 755 mmHg. What is the pressure (in mmHg) of chlorine gas in the tube?
Monday, March 11, 2013 at 10:01pm by andrew

Chemistry....help
find the water vapor pressure from the temperature, and subtract that pressure from your observed pressure. At 25C, water vapor pressure is 23.8 mmHg (check that) so your observed pressure then was 757.5mmHg-23.8mmHg. Now, you have pressure and volume at that pressure, convert...
Tuesday, July 3, 2012 at 9:19am by bobpursley

physics
a tank of ideal gas is sealed off at 20 degrees C and 1.00 atm pressure. What will be the pressure (in kPa and mmHg) in the tank if the gas temperature is decreased to -35degrees C ? the book answer is 82kPa = 6.2 x10^2 mmHg can you help me figure out how the book got this ...
Saturday, March 6, 2010 at 5:44pm by phyllis

Chemistry
The vapor pressures of ethanol (C2H5OH) and 1-propanol (C3H7OH) are 100 mmHg and 37.6 mmHg, respectively. Assume ideal behavior and calculate the partial pressures of ethanol and 1-propanol at 35 degrees Celsius over a solution of ethanol in 1-propanol, in which the mole ...
Thursday, March 18, 2010 at 12:27am by Arnold

Chemistry
A sample gas has a volume of 200 cm^3 at 25 degrees celsius and 700 mmHg. If the pressure is reduced to 280 mmHg, what volume would the gas occupy at the same temperature?
Monday, April 4, 2011 at 2:00pm by B

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?
Thursday, March 31, 2011 at 4:58pm by Bird

chemistry
120 ml of oxygen gas was collected over water at a barometric pressure of 732.0 torr and 23 degrees celsius. what is the partial pressure of the oxygen?
Wednesday, November 17, 2010 at 11:31pm by kayla

Chemistry
180/760 gives the DIFFERENCE between the atmospheric pressure and the pressure in the container in mmHg's. The container pressure is higher than the atmospheric pressure so add the difference to the container pressure.
Sunday, October 21, 2007 at 4:58pm by Jrod

CHEMISTRY
The volume of air in a persons lungs is 615 mL at a pressure of 760 mmHG inhalation occures at the pressure in the lungs drops to 752 mmHG, to wha volume did the lungs expand I got 615*760=V2*752=621 i keep getting 621 and the answer is 620 what i'am i doing wrong
Sunday, July 24, 2011 at 9:49pm by SHARON

Physics
Gauge pressure is the pressure relative to the ambient atmospheric pressure. A pascal (Pa) is the unit of measurement of pressure equivalent to 1 N (newton) acting on an area of 1 m². To produce a pressure sufficient to suck water to a height of 187 mm, the pressure ...
Wednesday, November 25, 2009 at 8:10pm by MathMate

chemistry
a sample of gas is collected over water at a temperature of 35 degrees celcius when the barometric pressure reading is 742.0 torr what is the partial pressure of the dry gas?
Tuesday, May 18, 2010 at 4:44pm by Jimmy

Physics (please help!!!!)
Blood pressure is usually reported in millimeters of mercury (mmHg) or the height of a column of mercury producing the same pressure value. Typical values for an adult human are 130/80; the first value is the systolic pressure, during the contraction of the ventricles of the ...
Saturday, April 16, 2011 at 3:05pm by Anonymous

Chemistry
1. A small piece of zinc reacts with dilute HCl to form H2, which is collected over water at 16°C into a large flask. The total pressure is adjusted to barometric pressure (752 torr), and the volume is 1538 mL. Use Table 5.2 to help calculate the partial pressure and mass ...
Monday, October 18, 2010 at 5:18pm by Carter

chemistry
1. Mass of flask, boiling chips, foil cap and unknown after cooling reaction 83.350g 2. Mass of flask, boiling chips and foil cap. 82.657 3. water bath temperature C 95.0 C 4. Barometric pressure in Hg 30.09 5. Accepted molar mass of unknown 86.2g/moles 6. Volume of flask 270 ...
Monday, June 14, 2010 at 12:42pm by Patty

Chemistry
P1V1/T1 = P2V2/T2 (765 mmHg)(585mL)/298K=(442mmHg) V2/278K V2=944.55mL so would that be right for #2?? Thank you so much for your help, I wasn't sure which law to use.
Tuesday, August 17, 2010 at 11:14pm by Ashley

Tidal Heights/Barometric Pressure
1013millibars
Friday, August 18, 2006 at 4:10am by john

Chemistry
What unit is barometric pressure measured in?
Sunday, February 27, 2011 at 10:45pm by Ana

Chemistry
a gas is at a pressure of 699 mmGh at 40 degrees celsius. what will the temperature be if the pressure increases to 760 mmHg
Friday, July 23, 2010 at 12:34am by lauryn

chem 105
A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas ...
Sunday, October 23, 2011 at 6:52pm by JULIE

chemistry
A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas ...
Sunday, October 23, 2011 at 7:13pm by samantha(very important)

chemistry
What is the total vapor pressure4 at 20° C of a liquid solution containing 0.30 mole fraction benzene, C6H6, and 0.70 mole fraction toluene, C6H5CH3? Assume that Raoult’s law holds for each component of the solution. The vapor pressure of pure benzene at 20° C is ...
Tuesday, September 14, 2010 at 6:57pm by Tim

CHEMISTRY
Solve for the new pressure in each of the following with N and V constant A sample of Na with a pressure of 770 mmHG at -60C is heated to 23C
Sunday, July 24, 2011 at 9:46pm by SHARON

chemistry garde 11
plases help me.... im really stuck in this question... i have no clue how to do it... please help me oxygen gas generated in the thermal decomposition of potassium chlorate in water. the total pressure of this system was measured to be 762 mmHg and the pressure of water was 22...
Saturday, January 15, 2011 at 11:39am by Kamal

Partial Pressure- Chemistry
A gaseous mixture of O2 and N2 contains 31.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 445 mmHg?
Tuesday, September 23, 2008 at 1:30am by Sarah

Chemistry
A 3.80 L cylinder contains 6.83g of methane, CH4, at a pressure of 3320 mmHg. What is the temperature of the gas? I know you use the formula PV= nRT, but I can't seem to get two sides equal each other, thus having the wrong temp. My guess is that I have to change mmHg to a...
Wednesday, November 14, 2012 at 6:13pm by Sarah

Chemistry
The pressure of an unknown gas is measured with a manometer. Instead of mercury the manometer is filled with a liquid (X) whose density is 0.553 g/cc. The pressure is measured as 653 mmX. What is the pressure in mmHg?
Wednesday, April 11, 2012 at 9:32pm by Alex

algebra 1
You should be able to reach a gauge pressure of -760 mm Hg (perfect vacuum), unless: (1) you have a leak or outgassing (2) you have a poor vacuum pump (3) atmospheric pressure is 759 mm Hg due to altitude or barometric pressure change (stormy weather)
Friday, January 28, 2011 at 5:19am by drwls

Science
Why the vaccum presure has a limit of -760 mmHg. if we wants to create a vaccum pressure more than -760 mmHg what i can do means how i can create?
Friday, January 28, 2011 at 10:50am by Sandip patel

chemistry
I am not certain the height of the water column. Whatever the height, you change to mm of mercury (inchesHg= heightwater/densitymercury) . Now subtract that from barometric pressure, and you have the pressure of the water vapor.
Thursday, October 25, 2007 at 4:46pm by bobpursley

chemistry
What is the barometric pressure of water at 23.2 C, perferably in atm. Thank you.
Tuesday, January 19, 2010 at 6:35pm by anonymous

Chem
A Baloon is filled with 3.00 L of helium at a pressure of 765 Torr. What is the volume of the baloon at an altitude where the atmospheric pressure is 530 torr?
Wednesday, June 29, 2011 at 8:20am by Chris

math
markup%= (985-765)/765 * 100
Thursday, March 27, 2008 at 8:31pm by bobpursley

chemistry
Which represents the largest pressure? A)five mmHg B)one atmosphere C)one millimeter of mercury D)one hundred pascals E)five pounds per square inch I tried converting them all to mmHg and I think the answer is B, but I just want to make sure.
Sunday, November 8, 2009 at 8:56pm by Holly

chemistry
A sample of Nitrogen(N2)& Helium has a volume of 250mL @ 30degrees celsius & a total pressure of 745 mmHg a)If the pressure is 32mmHg what is the partial pressure of the Nitrogen? b) What is the volume of the Nitrogen at STP?
Thursday, March 24, 2011 at 7:36am by Connie

Chemistry
what role does barometric pressure play in the boiling point of water?
Sunday, April 3, 2011 at 11:46am by pat

chemistry
express the barometric pressure in atm. 30.09Hg
Thursday, November 4, 2010 at 6:57pm by thomas richards

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 10:28pm by Belinda

Science (Chemistry)
This is the third time I have seen this question posted here. I see you changed the water bath temperature to something that makes sense: 45 C instead of 450. I explained how to to do this several days ago. The method remains the same. The partial pressure air increases by a ...
Saturday, February 2, 2008 at 2:26am by drwls

chemestry
A gas is contained in a metal cylinder with a piston, so that the volume of the cylinder can change. If the gas initially occupies volume of 664 ml at 471 mmHg, what will be the volume if the temperature is kept constant and the pressure is changed to 408 mmHg?
Tuesday, May 17, 2011 at 7:28pm by jo

chemistry
a mixture of methane and ethane is stored in a container at 294 mmHg. The gases are burned in air to form co2 and h2o. if the pressure of co2 is 357 mmhg measured at the same temperature and volume as the original mixture, calculate the mole fraction of the gases.
Saturday, December 4, 2010 at 3:37am by maggie

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