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Does gas have mass and density?


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Answered 2016-11-18 10:48:47

The short answer is yes, gas has mass and density. However, you should note that gas is a state of matter, just as solid and liquid are. Since all matter has mass, any substance in its gaseous state has mass. Since all matter occupies space, it has density, since density is defined as mass per unit volume, where volume is space.

Larger objects dont always have more mass than smaller objects.

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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


To measure the density of a gas you find the mass and volume, then divide the volume by the mass.


There will be the same amount of gas but in a smaller space. Density is mass/volume So as volume decreases and mass is constant, the density increases.


Oxygen - Atomic Mass: 15.9994.


First of all, the density of water decreases when it gets in gas state. Density is depended on mass and volume and thus the formula density= mass/volume. When water gets into gas state, the volume increases which results in an decrease in density.



mass is mass for solid, liquid, and gas. density of solid > density of liquid > density of gas volume of solid < volume of liquid < volume of gas There are some exceptions to "density of solid > density of liquid" and "volume of solid < volume of liquid", with some of them being ice / water and rock / magma.


Density is defined as mass / volume. Solving for mass: mass = density x volume In other words, all you have to do is multiply the density times the volume, to get the mass. Answer:0.8 mg



The question cannot be answered because its basic assertion not true. If the mass of a gas in a closed container is increased, then the density of the gas WILL increase.


The mass remains the same.the volume increases.the density decreases.


Density = Mass/Volume The density of natural gas (CH4) is approx. 800 g/m3.


for an gas,the relation PV=nRT holds good. n is no. of gas moles. Mass depends on density but density is directly proportional to pressure P.so at constant P,mass is given by VxDensity.


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).


A gas (including air) will expand if the temperature increases. That means the same mass of gas will have a larger volume. Since density is mass / volume, that means the density will decrease.


Volume = Mass/Density. In a larger container the mass of the gas remains unchanged, the density decreases so the volume increases.


It will increase. Density is mass/volume. Mass remains constant since no matter is entering or escaping. Lowering the temperature decreases the volume. Same mass in a smaller space= increased density.



Density is equal to the mass of the substance divided by the volume of the substance. D=m/V When you heat a gas, it expands. When it expands, its volume increases. If the volume of a substance increases while the mass stays the same (no loss nor gain in mass) then the density will decrease. If the gas cools, the volume will decrease and the density will increase.


the density of the gas at STP (standard temperature and pressure)


Mass of the gas divided by the area it takes up.



The density depends only on the mass of the sample and the volume to which it is confined. Then the density is (mass) divided by (volume), regardless of what happens to the temperature, or why.


Density = mass/volume for solid, liquid, or gas. It doesn't matter.


Temperature in this instance will not affect density, but rather pressure. The density of the gas will be much smaller than the density of a liquid or solid of the same chemical because it is a gas. The formula for density is mass over volume, and a gas has no measurable mass, making the gas always less dense than the liquid and the solid.



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