0
How do you calculate pressure when you know volume and temperature?
Wiki User
∙ 9y ago
The Force (weight) in Newtons (aprrox. 10N=1Kg) divided by the area (in Cm squared)
Correction:
To work out the pressure you nee to use this formula; Pressure=Force/Area. The force can be in N or Kg, I prefer to use N. The area can be measured in mm,cm,m etc. If you divide say 10N by 5cm (10/5) it would equal 5N/cm, this is because the meausurment reflexs onto the sum. However, if you did Force x Area (not used for working out pressure) and say the force was 10N and the area 10cm (10x10) then it would be 10Ncm (without the '/').
!
Wiki User
∙ 8y ago
Wiki User
∙ 15y agoFor a gas, pressure in a closed vessel is proportional to absolute temperature (kelvin) and inversely proportional to volume. This can be expressed in the ideal gas equation: P x V = R x T, where P = pressure, V = volume, T = degrees kelvin, R = molar gas constant = 8.31 Jmol-1K-1. This equation applies to a quantity of 1 mole of a gas. To put it in terms of actual mass of gas, we can write
P x V = mRT/M, where m = mass of gas in g, M = molar mass in g, which is the molecular weight, ie 32 for oxygen for example. To make the arithmetic correct, you need to use SI units, pressure in pascals and volume in cubic meters, and temperature in deg kelvin.
If you are changing gas conditions from P1, V1, T1, to P2, V2, T2, you can just write an equation: P1 x V1 x T2 = P2 x V2 x T1
Wiki User
∙ 9y agoThe relation is:
P = T/V x k
Add your answer:
Earn +20 pts
Concentration of H2SO4 titrations?
i dont know really......cos u have to be specific what volume is it in how many moles room temperature pressure precautions etc
When the temperature of the gas rises to 353 kelvins what is the volume of the gas?
That would also depend on the amount of gas. If you know the volume at a lower temperature, do a rule of three (for example, twice the temperature will cause twice the volume).
How can the stoichiometry be determined for a reaction that forms a gas instead of a precipitate?
If a reaction produces a gas instead of a precipitate, the volume of the evolved gas can be measured. With the volume, temperature, and pressure of the gas known, the number of evolved moles of gas can be calculated. If the pressure is fairly low, the ideal gas law should give an adequate method to calculate the number of moles: n = PV/RT If the number of moles of the reactants and any other products are know, the stoichiometry should be fairly straightforward to calculate - unless there are multiple reactions occurring.
If the density and volume of an object is known what can also be found?
If you know the density and the volume, you can calculate the mass. This is becausedensity = mass/volume.
What is the difference between Charles' Law and Boyle's Law?
Gases have diverse properties tat we can observe with our senses. These properties include gas pressure, temperature (T), mass, and the volume that contains the gas. Close scientific observation has confirmed that these variables are related to one another and that the values of these properties can determine the states of the gas. Boyle's law states that at a constant temperature the volume of a gas is inversely proportional to the pressure while Charles law states that the relationship between temperature and volume are proportional to one another.Boyle's Law states that the product of the pressure and volume for a gas is a constant for a fixed amount of gas at a fixed temperature. The mathematical relationship of Boyle's law is given as PV=k (P= pressure, V= volume, k= constant). When the pressure of the gas was increased, the volume of the gas decreased. This can be seen when, as more weights are added onto a piston, the pressure increases while the volume decreases leaving less room for the particles to move around. So if the volume was 10 Liters and the pressure was 1 atm., the value of k was 10 L atm. This value for k is the same even after a 50 Kg. weight is added changing the volume to 8.39 Liters and the pressure to 1.18 atm.Another law that states the relationship between temperature and volume when pressure is constant is Charles's law. The mathematical relationship is V/T=b (V= volume, T= temperature, b= a constant). As volume increases so does the temperature. The initial value for b (the constant) before the heating of the gas inside the piston chamber was around 0.017 L / K. This value was also the same or constant after increasing the temperature of the gas inside the piston by 10 degrees Celsius. Initially, for temperature of 25o C or 298 K the volume was 5 liters (pressure constant) and at 35o C or 308 K, the volume changed to 5.17 Liters but when you substitute these values into the equation V/T= b, b is the same value. Thus, even though the values change in both laws, the constant remains the same.The constant in Charles law depends on the quantity of gas and the pressure. The ratio of volume to temperature for any set of volume - temperature values always equals the same. In Boyle's law, the constant for different gases can be determined by finding out the volumes and pressures.
How to calculate mass with volume temperature and pressure?
You cannot. If you know the volume, temperature and pressure of a pencil, you will be no closer to knowing its mass!
How to calculate final pressure when given initial pressure and initial temp and also final temp and know that it's a constant volume process from initial state?
You can calculate pressure and temperature for a constant volume process using the combined gas law.
How do you calculate pressure of gas in a piston?
You can calculate the pressure of any gas in an enclosed space provided you know the number of moles of gas (or can calculate the number of moles), the volume of the space and the temperature of the gas. The equation is: PV=nRT P is the pressure, which is what you are calculating. V is the volume, which you need to know or to calculate from the dimensions of the piston. n is the number of moles of the gas, which you need to know R is the gas law constant; depending upon the units for the other four numbers, you can look this number up on the internet T is the temperature of the gas, which needs to be in Kelvin for the equation to work
Is the graph created by Pressure vs Volume an exponential graph when constant in temperature?
It depends, you have to know which variable (Temperature/Pressure/Volume) is constant, see here http://hypertextbook.com/physics/thermal/pressure-volume/
What is the volume occupied by 27.9 of argon gas at a pressure of 1.17 and a temperature of 346?
There is no such thing as "27.9 of argon". You must specify the unit, such as moles, kilograms, etc. The same applies to the pressure and the temperature - the unit must be specified, since there are several options in each case. Once you know that, use the formula for the universal gas law to calculate the corresponding volume.
What are facts about pitch and volume?
i only know one witch is : in general, the volume of an object increases with an increase in temperature and decrease with an increase in pressure.
How do you calculate the amount of gas required to raise the pressure of a closed vessel to a known value?
If you know the temperature, pressure and volume of the vessel, you can calculate the amount of moles through the Ideal gas law. PV = nRT That is assuming you have ideal conditions. If not, a variance of the ideal gas law can be used in order to get the moles of your gas.
What gas law is used to calculate the pressure of gas at various volume assuming temperature stays constant?
If you know other factors, you could use PV=nRT, where P is pressure, V is volume, n is the number of moles of the gas, R is the gas constant (typically 0.0821, but it depends on the units of the other factors), and T is temperature. However, if you don't know those other factors, or have no need for them, Boyle's law will suffice: P1V1=P2V2.
What is the principle know as charles law?
As temperature increases, pressure decreases. More specifically this is a gas law, and so as temperature goes up, the volume does too.
How do you find the volume of a gas at a certain temperature?
One still has to know the pressure and the amount(moles) of that gas, not which gas is concerned.
The pressure of 250 kPa acting on 15 cubic meters of a gas at a temperature of 100 K is increased to 500 kPa and the volume is increased to 30 cubic meters?
Use the ideal gas equation to solve this. PV= nRT. You will have to convert your pressure to atmosphere to use the constant R = 0.0821 L*ATM/mol*K. You know your initial pressure, volume, and temperature. Moles can be neglected (n) because they will stay the same. You also know your final pressure and final volume, so you can solve for final temperature.
3.00 liters of acetylene is how many moles?
If n = number of gas moles, then with the Ideal Gas Law you have to know pressure, Temperature as well as volume to know (calculate) the amount of matter (moles). (R is the general gas constant in the correct units)n = p.V/R.T
