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Answered 2016-06-08 20:13:24

At a constant volume the pressure increase.

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Answered 2017-07-20 12:50:57

The volume doubles.

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Assuming temperature is held constant, the volume is reduced by half.


Pressure is halved when ONLY volume is doubled (n and T are constant).Remember the General Gas Law:p.V = n.R.T(in which R=general gas constant)



The product PV remain constant in a closed system at constant temperature.


If only the length is doubled, the volume is also doubled.If only the length is doubled, the volume is also doubled.If only the length is doubled, the volume is also doubled.If only the length is doubled, the volume is also doubled.


pv=nrt if temp and pressure double, the equation is sound, and volume remains constant.


if the pressure is decreased to half value the volume becomes doubled at constant temperature.



Density automatically increases with mass if volume remains constant. If the amount of mass in a given volume doubles, the density of the substance in that volume has doubled.


PV=nRT, so P=nRT/V for an ideal gas, so if the volume is doubled and the temperature is halved, the pressure remains constant.




The initial pressure is halved. Use Boyle's law that relates pressure & volume at a constant temperature. P1V1 = P2V2 In this case the V1(initial volume) is doubled so V2 = 2V1 P2 = P1V1/V2 = P1V1/2V1 P2 = (1/2)*P1







The ideal Gas Law states the following: pV=nRT p=pressure [pa] V=volume [m³] n=number of moles R=constant T=temperature [K] So, if you multiply the number of moles by 2, and all the other variables are not changed, your volume will also be multiplied by 2.




pV = nRT we can firstly assume that n (number of moles) and R (gas constant) do not change and as pressure is also kept constant, the temperature must be proportional to the volume. Thus if temperature is increased from 27C (300K) to 327C (600K) and is doubled, the volume must also double.


If you double the pressure you halve the volume, so the ration is 1/2For the same amount (and temperature) double the pressure means half the volume.


The pressure of a gas would be reduced by half if the volume of the container doubled, provided that no other change occurred. Pressure and volume are inversely proportional. The relationship between the two is known as Boyle's law. In brief, the volume of a gas changes inversely with the pressure of the gas if the temperature and quantity of gas remain constant.




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