Gas & pressure?
Q. Does increasing the pressure of a gas reduce its volume
Asked by kitten - Wed Jul 9 09:43:40 2008 - - 1 Answers - 0 Comments

A. Yep. Boyle's Law. At a constant temperature the volume of a gas varies inversely with the pressure. Increase pressure, decrease volume.
Answered by b - Wed Jul 9 09:51:36 2008

What physically causes gas pressure and how can you increase the pressure of gas?
Q. Also, I have a few other questions that I would like answered too :) Thanks for all your help. 1. How do temperatures in Celsius and Kelvin differ in their relationship with pressure? 2. How do you write an equation to express the relationship between pressure and temperature (K). Use symbols P, T, and c. 3. What should happen to the pressure of gas if Kelvin is doubled? 4. What shoul be the pressure at "absolute zero" Thanks!
Asked by Jenn - Wed Jan 16 13:06:57 2008 - - 1 Answers - 0 Comments

A. the gas law you can use is P1 * V1 = P2 * V2 T1 T2 (that's divided by) you can increase gas pressure by reducing the volume which the gas occupies (P1 *V1 = P2 * V2 of the same gas) while the temperature remains the same and also by reducing the temperature, while the volume remains the same this temperature (T1 and T2) is ALWAYS measured in Kelvins, so if you were to use degrees C, you have to add 273 to the figure to make it into Kelvins. I hope that answers no 2 if the temperature is doubled then it follows that the Pressure will also double (if the volume is kept the same) so that the equation written previously to be proven. i hope that helps!
Answered by oneworld - Thu Jan 17 05:35:56 2008

At what temperature would the gas pressure equal 725 mmHg using the Combined Gas Law?
Q. A fixed amount of He exerts a pressure of 775 mmHg in a 1.05-L container at 26 degree C. At what new temperature would the gas pressure equal 725 mmHg? Assume the volume of gas remains constant.
Asked by Shanice - Sun Nov 1 12:19:36 2009 - - 1 Answers - 0 Comments
What is the gas pressure supposed to be in a 1997 GMC Jimmy?
Q. What is the gas pressure supposed to be in a GMC Jimmy 1996 V6 Vortec 4.3. Thank You. Not the oil pressure - gas pressure
Asked by Kyle - Sun Nov 4 15:12:06 2007 - - 2 Answers - 0 Comments

A. vortex motor or not if it does 65 psi if no 30-35 psi if you dont have this pressure they both wont start gas pressure
Answered by jpattonfamily - Sun Nov 4 20:06:50 2007

What mass of gas is needed to increase the gas pressure in a fixed volume cylinder from 3400psi to 3600psi?
Q. Using nitrogen gas at a temp of 30 deg c and charging a cylinder of a fixed volume of 1000 ltrs/cm3 what is the extra mass/volume of gas required to increase the pressure in side the cylinder from 3400psi 3600psi
Asked by MarkHuae - Fri Nov 17 04:20:48 2006 - - 1 Answers - 0 Comments

A. as pressure is directly proportional to density. so for fixed volume pressure is directly proportional to mass so p1/p2 = m1/m2 p1=3400 p2=3600 m1= 1000 ltrs m2=x so we find m2=1058.82 ltrs so we need 58.82 ltrs convert into kgs by finding density of nitrogen gas. hope this helps
Answered by yog - Fri Nov 17 06:11:14 2006

A piston of mass 10lb is fitted in a cylinder with cross-sectional area of 10 in^2, What is the gas pressure?
Q. The setup is in a centrifuge that creates an acceleration of 75 ft/s^2. The pressure outside the cylinder is standard atmospheric. What is the gas pressure in psia?
Asked by craig w - Sun Aug 31 12:01:24 2008 - - 1 Answers - 0 Comments

A. metric only 10 pound-mass = 4.54 kg 75 ft/s^2 = 22.9 m/s2 10 sq in = 0.00645 m2 The force of the cylinder is 4.54 kg*22.9 m/s2 = 104 N 104 N / 0.00645 m2 = 16119 P or 2.34 psi .
Answered by billrussell42 - Sun Aug 31 12:23:05 2008

what is the flue gas pressure of muncipile solid waste incinerator?
Q. i just wanna ask the about the flue gas pressure from after just incinerator. and what is the flue gas pressure after flue gas cleaning system of the flue gas?
Asked by lixiviant - Mon Sep 10 20:04:37 2007 - - 1 Answers - 0 Comments

A. Depends on the incinerator and scrubber design. You must be more specific.
Answered by NONAME - Wed Sep 12 22:01:07 2007

What does the EPA e-check check in regards to the gas pressure?
Q. My car is coming up for echeck and I was wondering if the gas pressure check is for the cap itself or for the entire gas tank, because my car leaks gas on the bottom if filled up completely. My cap is fine though, anyone know how that part of the check works? I live in Ohio
Asked by D V - Tue May 29 15:17:51 2007 - - 2 Answers - 0 Comments

A. In Ohio they test the cap itself. They remove it from the car and stick the pressure tester directly on it. It is possible for the system to remain pressurized even with your leak (in fact, the pressure could be helping push the leak).
Answered by callmecam2 - Tue May 29 15:23:04 2007

What is the natural gas pressure from Enbridge in St. Catharines, ON?
Q. I need to know the gas pressure for installing my new barbeque. I think it might be either 3" or 7" W.C.?
Asked by eddie money - Tue Jul 8 14:09:33 2008 - - 1 Answers - 0 Comments

A. Here in the US the pressure coming off the meter, the supply pressure in the house is around 7"W.C.. for natural gas. Most appliances here and in Canada have a regulator that has an output of 3.5" W.C.. That may be where you are getting that number. I think for gas grills they don't use a regulator for natural gas, they simply use a smaller orifice and that is your metering device, acts as a sort of regulator. Hope that helps some. If you REALLY need to know more exactly you can rather simply make your own manometer and measure it. Good Luck.
Answered by Thor - Tue Jul 8 14:52:24 2008

can a hole is the gas tank hose affect gas pressure and fuel pump?
Q. no gas is being pumped to my fuel injectors, i took a look at my gas tank and I see there is a hose that is missing a clamp to clamp it tight to another pipe. can this affect the fuel tank pressure? or the fuel pump? it's a 92 chevy astro van, fuel injected. the cs model rear wheel drive. what sound should I hear from the fuel pump? it's actually the hose (3") that you pump gas into the tank through. a short 1 1/2 foot 3" hose.
Asked by GuyBen - Mon Jul 30 20:15:31 2007 - - 2 Answers - 0 Comments

A. If you dont see fuel leaking there, I doubt that is a problem. Can you hear the fuel pump running? As always, the year make and model of the vehicle in question is helpful for a good answer. I'll never understand why so many people dont include that info in their ?
Answered by Ron B - Mon Jul 30 20:24:44 2007

How to calculate dry gas pressure?
Q. CO2 was produced and I need to calculate the pressure. Would the dry gas pressure be the atmospheric pressure of the room (96kPa) minus the water vapour pressure (1.84 kPa)?
Asked by Tally - Fri Jan 11 20:25:29 2008 - - 2 Answers - 0 Comments

A. Hello! and yes! :)
Answered by Herm - Fri Jan 11 21:22:04 2008

can you help me with a gas pressure problem?
Q. A gas vessel is attached to an open-end manometer containing a nonvolatile liquid of density 0.791 g/mL as shown below. The difference in heights of the liquid in the two sides of the manometer is 43.4 cm when the atmospheric pressure is 755 mmHg. Given that the density of mercury is 13.6 g/mL, the pressure of the enclosed gas is ___ atm.
Asked by susan v - Mon May 7 12:02:57 2007 - - 2 Answers - 0 Comments

A. First of all, they want you to compare the density of the mercury to the density of the nonvolatile liquid. (13.6/0.791= 17.2) The ratio is equal to 17.2 and mercury is much more dense than the other liquid. This means that 1 cm of Hg in the manometer would correspond to 17.2 cm of the other liquid in the manometer. So you have a difference of 43.4 cm in the manometer. This would correspond to (43.4/17.2) = 2.52 cm of mercury. This would be the same as 25.2 mm of mercury. We know that the atmospheric pressure is 755 mmHg. Since I can't see the manometer diagram, I will have to ASSUME that the pressure of the enclosed gas is higher than the atmosphere. The pressure of the enclosed gas is (755 + 25.2) mmHg or 780.2 mmHg. Now convert… [cont.]
Answered by mrfarabaugh - Mon May 7 12:19:16 2007

What happens to hydrogen gas under pressure ,thats been heated to right below the combustion temperature?
Q. It expands ,right ? Or if it's in a liquid form when under pressure , at what temperature will it revert to a gas? Or will it stay a liquid under pressure at any temperature?Please enlighten my highschool dropout brain.
Asked by isaacchef - Fri Feb 29 03:14:24 2008 - - 1 Answers - 0 Comments

A. That depends on the pressure and temperature. You see...everything in the universe tends to reach equilibrium. In your case, hydrogen gas under pressure will take liquid forms but still have some molecules of gas form floating above the storing place. If you put more pressure, some of these floating molecules will join their brethren in liquid form so less of the molecules in gas form. Raising temperature means giving energy for molecules to actively bouncing around if it's gas form or if it's solid or liquid form just 'shaking' there in place. As more and more calories are added, the more energy for bouncing around or 'shake-shake' till you break free. So those liquid form of hydrogen gas will start breaking free again into gas form. It' [cont.]
Answered by MoronZzZ - Fri Feb 29 03:48:23 2008

What is the pressure of a gas trapped in a manometer if the side open to the air is 34.1 cm higher than the si
Q. What is the pressure of a gas trapped in a manometer if the side open to the air is 34.1 cm higher than the side of the gas. Atmospheric pressure is 800.4 mm Hg
Asked by Jerry B - Mon Mar 10 00:58:33 2008 - - 2 Answers - 0 Comments

A. If it's a Mercury manometer... Open end = 800.4mmHg. Open end Hg height = 34.1cmHg...The gas side is 17.05cmHg higher pressure. = 170.5mmHg. D.P. The pressure in the closed end... = 800.4 + 170.5 = 970.9mmHg.
Answered by Norrie - Mon Mar 10 01:09:10 2008

Is it ok to run a Craftsman gas powered pressure washer in the rain?
Q. Just bought a Craftsman pressure washer. Gas powered. Briggs & Stratton engine. I believe it's a 190cc. Using it on a huge fence and deck. Forecast is for rain for the next few days. Really want to get the job done. Rain doesn't bother me, but is it bad for the motor?
Asked by ed g - Thu Sep 4 23:18:38 2008 - - 4 Answers - 0 Comments

A. The heat produced from the device running is enough to evaporate any moisture it comes in contact with, ie, light rain storm, inadvertant spray.
Answered by FoundTimeToWaste - Fri Sep 5 00:26:06 2008

What does no gas pressure mean?
Q. If a gas's pressure is turned down to 0, meaning the molecules stop moving, what has happened to the gas? Is the gas gone?
Asked by Jenny P - Fri Oct 5 23:15:41 2007 - - 4 Answers - 0 Comments

A. For a gas that can be treated ideally, PV=nrT therefore P=nrT/V thus when P=0; n=0, T=0 or V=infinity (r is a constant) Quantum mechanically, even at 0K, there is still a mode of vibration for atoms/molecules, this is called its zero point energy. Even if you imagine this doesn't exist, by decreasing the temperature to approximately 0K, you will drop below the molecules boiling and melting temperatures and the gas will be a solid (a simple example, the gas is H2O, once you drop below 0C it will solidify. Once you approach 0K, the wouldn't be many free molecules that hadn't solidified at all). When n=0, there is no gas molecules and the gas isn't there When V=infinity, the gas is spread over the whole universe. Realistically, V can… [cont.]
Answered by Stuart D - Fri Oct 5 23:18:04 2007

Easy gas pressure chemistry problem? What mass of of lithium is required to react completely with nitrogen gas?
Q. Lithium reacts according to the reaction: 6Li (s) + N2 (g) --> 2Li3N (s) What mass of lithium (in g) is required to react completely with 57.2 mL of N2 gas at STP? STP is 1 atm and 273 kelvin. Someone please explain this to me.
Asked by K B - Thu Nov 5 00:01:47 2009 - - 1 Answers - 0 Comments
How can I increase gas pressure in Gas Range / Oven?
Q. Is there a way to increase gas preassure in the gas range so the flame would burst more so it can produce more heat? ill provide the range info if that's needed thank you need to increase flame in the Top Burners My oven is new. i just want a higher n powerful flame. i need more heat in the burners then usual. i need more heat in the burners than usual.
Asked by heart_crafter - Sat Apr 7 14:44:54 2007 - - 7 Answers - 0 Comments

A. sounds like if the flame isn't nice and blue you aren't gettin enough oxygen in the mix make sure the gas and air regulators are properly adjusted. And you probably don't really want more heat in an oven a flame burns at about 1200 degrees F. that should be plenty hot to cook with.
Answered by wanttoknow25 - Sat Apr 14 22:53:11 2007

f-150 dual tanks gas from back tank drains to front builds up pressure?
Q. 1898 ford f-150 dual gas tanks. front tank does not work. lately the gas from the back tank is draining into the front tank and building up high pressure. gas leaks from the cap and sprays out like a shook up pepsi.
Asked by Jon E - Tue Apr 15 17:44:57 2008 - - 1 Answers - 0 Comments

A. 1989 eh, didn't know they were made then. Of course, they always said that Henry Ford was ahead of his time. Nevertheless, I will assume that you meant 1998. I had almost the exact same problem in my 1993 F-150 hunting rig. What you will have to do involves removing the front tank. I would replace the fuel pump while you have it out. Coming out of the top of the fuel pump above the tank you will see a check valve attached to the out line. Supposing that you buy just the pump, this valve will need to be replaced. It is tricky because of the bend in the line and you may end up taking a cutoff wheel and cutting it off (then puttign on the new one). If you buy the whole fuel pump assembly (pump, mounting plate, and level sender)… [cont.]
Answered by Adam - Thu Apr 17 00:09:07 2008

18) the volume of a gas is doubled while the temperature is held constant. How does the gas pressure change?
Q. a) it is reduced by one half b) it does not change c) it is doubled d) it varies depending on the types of gas
Asked by xXLiLXx - Fri Feb 29 21:19:46 2008 - - 4 Answers - 0 Comments

A. just a guess here - a) it is reduced by one half yes. checked it. Boyle's law states: If the temperature of a gas remains constant, the pressure exerted by the gas varies inversely as the volume.
Answered by * - Fri Feb 29 21:23:17 2008

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