What is the final Pressure?
105211
Pressure * volume = number of mol * temperature (in ^oK) * 8.314\n\nYou have all the information you need right there. \nFirst solve for n for the initial state. \nSince you haven't added any more material you can then use the same value of n for the second state and solve for P.\n\nThis is sixth grade algebra. Anyone being asked to solve gas equations had better be able to do it standing on their head or they are in real trouble.
495016
This is more of a physics question...\nd final = .5*a*t^2 + v*t + d\nv final = a*t + v\nd is displacement, v is velocity, a is acceleration.\nEnjoy.
1105154
pressure is: \n p(density)gh / gc =y(specific weight)h\nflow of liquid flowing inside the pipeline is:\n use the bernoulli equation:\n [p1/p(density)g  +  v1^2/2g  +  z1]  =  [p2/p(density)g  +  v2^2/2g  +  z2  +  hf]\n\nnote: p(density) is rho and y(specific weight) ir gamma.
458068
Pressure is force over area and would be per m^2.  They use the center of the earth because the math works out such that all the mass of the earth could be treated as being at that point.  It doesn't have as much physical meaning as you might think.
1165877
at the very end \nlike 90thish?
180516
Well, P * V = n * R * t\nRight side is equal before and after changin` pressure.\nSo, P1 * V1 = P2 * V2\nP1 = 1.01 kPa ;\nV1 = 458 mL ;\nV2 = 477 mL.\nP2 = (P1 * V1)/V2\nP2 = (1.01 kPa * 458 mL)/477mL\nP2 = 0.97 kPa\n\nP.S. You didn't have to say how much is the temperature, it doesn't mather.
432484
Atmospheric pressure is a direct result of the weight of the air. This means that air pressure varies with location and time, because the amount (and weight) of air above the earth varies with location and time. Atmospheric pressure drops by ~50% at an altitude of about 5 km (equivalently, about 50% of the total atmospheric mass is within the lowest 5 km). The average atmospheric pressure, at sea level, is about 101.3 kilopascals (about 14.7 pounds per square inch).
1002151
14.7 PSI is the atmospheric pressure at sea level. It has nothing to do with gravity.
131400
I believe it was around 300 psi.
197287
Total pressure  = partial pressure of water + partial pressure of everything else.  If water is 18% of the total, then the total is 139 mm Hg / 0.18 or around 700 mm Hg (flying with no calculator).  \n\nYou should point out to your teacher that it is physically impossible to have that high a partial pressure of water in a greenhouse (at least, on Earth), and it will rain in this greenhouse until reaching the saturation point of water in air.  This is determined by temperature and the Antoine constants for water.
856212
There is a standard model of the atmosphere which is used for calibrating instruments such as aircraft altimeters.  The standard sea level pressure is 1.01325 bars, or about 760 mm Hg.  In a vacuum, the pressure is reduced sufficiently to facilitate whatever process the vacuum was intended to enable; in laboratories, vacuums of 1E-8 bar or lower are attainable.
934061
40-65 PSI - that's the standard.
631138
Water pressure is the force exerted by water on its surroundings.\n\nOne example is diving under water. At the surface, the air pressure is one atmosphere (atmosphere is a unit of pressure). If you dive 33 feet down, then the pressure is 2 atmospheres. 66 feet is 3 atmospheres, etc. This means, under 33 feet of water, the force exerted on you by the water is double the pressure of air at the surface (which you don't notice because you're used to it ... you only notice when it changes, such as when you go in an airplane and your ears pop).\n\nAnother example is in pipes. Water is pressurized so that it will flow out of your faucet when you open the tap. The air pressure at your sink is one atmosphere. As long as the water in the pipes is pressurized more than one atmosphere, water will flow when you open the tap.
911852
Pressure is nothing but a force applied onto an area. Pressure in air filled balloon, for example,  is due to "concurrent forces" created by compressed air pushing outward from the center on the balloon. These forces are equal in strength that at the center they clear each other. Thus at the center the pressure is a nonsatble 0.
543227
55.280 kPa - 101.325 kPa = -45.045 kPa\n\nAbsolute pressure is gauge pressure plus atmospheric pressure which is 101.325kPa.
744792
Pressure at the bottom = p1 = 12.7 * 0.0136 * 9.8 *10000 + 101300= 118226.56 Pa\nT1 at the bottom = 273+33=306 K\nT2 at surface = 273+33.6=306.6 K\nV1=0.115 cu.cm.\np1*v1/T1 =p2*v2/T2\n118226.56 * 0.115 /306 =101300*v2/306.6\nwe get v2 = 0.1345 cu.cm
1160713
Convert temperatures to absolute; add 273 and then use Charles'law.0.55atm /173 = x /473 so x = 0.55atm times 473/173 = 1.5 atm.   That's the new pressure.