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It depends upon how much of it you have. If the quantity is appropriate, weigh a container on a scale. Then put the gas that you want to weigh into the container. Weigh the container with the gas. The mass of gas is the difference between the two weights.
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoYou can use the ideal gas law to compute the molecular weight of a gas. Since n, the number of moles, is just equal to the mass m divided by the molecular weight M, we can substitute in the m/M for n in the ideal gas law and solve for M. : PV = nRT : PV = mRT / M : M = mRT / PV This is how we know that molecules like oxygen and nitrogen are diatomic gases: we measure P,V m and T for a given amount of gas and compute M
from: http://www.cartage.org.lb/en/themes/sciences/chemistry/inorganicchemistry/Informationlaws/GasIndex/Molecularweight/Molecularweight.htm
Wiki User
∙ 13y agoThat depends, what information/tools do you have readily available to you.
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How can you use variables like temperature pressure and volume of gas in cng cylinder to find out mass of gas in side it?
The ideal gas law. Pressure * Volume = moles * Gas constant R * Temperature in Kelvin Once you have moles it is easy to find mass. PV = nRT
Molecular mass equals 2vapour density?
vapor density =density of gas/density of hydrogen gas=mass of a certain vol. of gas/mass of same vol. of hydrogen gas=mass of n molecules of gas/mass of n molecules of hydrogen gas=mass of 1 molecule of gas/mass of 1 molecule of hydrogen gas=molecular mass of gas/molecular mass of hydrogen gas=molecular mass/22 x vapor density=molecular mass
Why is it important to know the mass and volume of gas at STP?
To find it's density
How could a chemist find out how much mass is given off as gas during a chemical change?
How could a chemist find out how much mass is given off as gas during a chemical reaction
How do you find molecular mass if specific volume is given?
This is easy if a gas. The weight of a volume of 22.41 L will give the molecular mass.
How do you find the mass of a comtainer?
How do you find the mass of the oxygen gas in the metal container
How do you measure the density of a gas?
To measure the density of a gas you find the mass and volume, then divide the volume by the mass.
How can you use variables like temperature pressure and volume of gas in cng cylinder to find out mass of gas in side it?
The ideal gas law. Pressure * Volume = moles * Gas constant R * Temperature in Kelvin Once you have moles it is easy to find mass. PV = nRT
Molecular mass equals 2vapour density?
vapor density =density of gas/density of hydrogen gas=mass of a certain vol. of gas/mass of same vol. of hydrogen gas=mass of n molecules of gas/mass of n molecules of hydrogen gas=mass of 1 molecule of gas/mass of 1 molecule of hydrogen gas=molecular mass of gas/molecular mass of hydrogen gas=molecular mass/22 x vapor density=molecular mass
Why is it important to know the mass and volume of gas at STP?
To find it's density
How do you find molecular mass if specific volume is given?
This is easy if a gas. The weight of a volume of 22.41 L will give the molecular mass.
How could a chemist find out how much mass is given off as gas during a chemical change?
How could a chemist find out how much mass is given off as gas during a chemical reaction
Does gas have definite mass?
Yes. Gas Mass = sum of gas atoms= n(gas atoms).
What supports the idea that mass is conserved in a reaction that produces a gas as a product?
Trapping the gas and measuring its mass...
How do you find mass and density of the gas cylinder?
That all depends on the type of gas and volume given for the problem. We can't determine the mass and density of the gas cylinder if we are not given these info, which can also include pressure (because density varies based on that variable).
What elements mass is 30 and a noble gas but not neon?
There is no such noble gas with an atomic mass of 30. The mass of neon is 20 and the mass of the next noble gas, argon, is 40
How do you find out the molar mass of a gas given density temperature and pressure?
MolarMass = [density x gas constant x temperature(in kelvin)] / pressure (in atm)
