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What is the molecular weight of air in lb lbmol?
The molecular weight of air is approximately 28.97 lb/lbmol.
What is the molecular weight of air in lb/lbmol?
The molecular weight of air is approximately 28.97 lb/lbmol.
Molecular weight of air at standard conditions?
First, molecular weight is a direct function of the level of dissociation and hence an indirect function of temperature. Dissociated Air has a significantly (about an order or magnitude) lower molecular weight as associated air (e.g. air at room temperature). Dissociation for air starts somewhere around 2000 Celsius (that's where O2 goes into O+O) and hence, the molecular weight of air up to 2000 Celsius is constant. This also affects the "specific gas constant" which drastically decreases in temperature regimes where dissociation occurs.With that said, the molecular weight of DRY air (no water vapor) is 28.97. Engineering Toolbox does a good job of breaking down the composition of associated air, see the URL below:http://www.engineeringtoolbox.com/molecular-mass-air-d_679.html
Does nitrogen weigh more than air?
No. Nitrogen is slightly less dens than air. The density of a gas is directly proportional to its molecular mass. Dry air is 78% nitrogen, 21% oxygen. Nitrogen has a molecular mass of 28 AMU. Oxygen has a molecular mass of 32 AMU. This makes air just a bit denser than pure nitrogen.
Acetone vapor lighter than air?
Air is mostly nitrogen, which has a molecular weight of about 28 amu. The presence of oxygen and other gases brings the average up somewhat, so we can take 29-30 g/mol as a reasonable estimate for dry air.Acetone has a molecular weight of 62.For two gases at the same temperature and pressure, the density depends only on the molecular mass. So acetone vapor is more than twice as dense as than air at the same temperature and pressure.Incidentally, applying this same reasoning to methane (molecular weight 16) indicates that it is lighter than air, and a toy balloon filled with natural gas (which is mostly methane) will indeed float ... but only just barely, because the difference in density is small enough that the weight of the balloon itself almost cancels out the buoyancy of the methane.
What is average molecular weight of air?
The average molecular weight of dry air is 28.96 g/gmol.
What is the molecular weight of air in lb lbmol?
The molecular weight of air is approximately 28.97 lb/lbmol.
What is the molecular weight of air in lb/lbmol?
The molecular weight of air is approximately 28.97 lb/lbmol.
Why molecular weight of air is 28.9?
It is the weighted average of the individual molecular weights of the components oxygen and nitrogen. Generally speaking, air is composed of 21% oxygen and 79% nitrogen. Thus the average molecular weight of air is calculated as follows: MW air = (.21)*(MW O2) + (.79)*(MW N2)
Molecular weight of air at standard conditions?
First, molecular weight is a direct function of the level of dissociation and hence an indirect function of temperature. Dissociated Air has a significantly (about an order or magnitude) lower molecular weight as associated air (e.g. air at room temperature). Dissociation for air starts somewhere around 2000 Celsius (that's where O2 goes into O+O) and hence, the molecular weight of air up to 2000 Celsius is constant. This also affects the "specific gas constant" which drastically decreases in temperature regimes where dissociation occurs.With that said, the molecular weight of DRY air (no water vapor) is 28.97. Engineering Toolbox does a good job of breaking down the composition of associated air, see the URL below:http://www.engineeringtoolbox.com/molecular-mass-air-d_679.html
Why is water vapor lighter than air?
Water evaporated at atmospheric pressure is 1601 times less dense than liquid water. Air is 1225 times less dense than liquid water.Nitrogen gas the primary component of air has a molecular weight of 28.014.Oxygen the secondary component of air has a molecular weight of 31.998.Water has a molecular weight of 18.015. Water is lighter in the gaseous state.
What is the average weight of an air conditioner?
The average weight of a residential air conditioner is around 100 to 200 pounds.
How quickly gas spreads in air?
The diffusion rate of gas in air depends on factors like temperature, pressure, and molecular weight of the gas. Gases with lower molecular weight tend to diffuse faster than those with higher molecular weight. In general, gas molecules will spread throughout the air relatively quickly due to their high mobility and ability to mix freely.
Why is the gas sulfur hexafluoride heavier then air?
The density of a gas is propotional to its molecular weight. Air is composed of primarily of nitrogen and oxygen, which have molecular weights of about 28 g/mol and 32 g/mol respectively. Sulfur hexafluoride has a molecular weight of about 146 g/mol, which would make it roughly 5 times denser than air.
Is the weight of air?
atmosphere
Is hydrogen gas denser than air?
No, hydrogen gas is less dense than air. This is because hydrogen gas has a lower molecular weight compared to the average molecular weight of gases present in air, which makes it lighter and less dense.
What is the weight of the overlying of air?
The weight of the overlying air, also known as air pressure, is about 14.7 pounds per square inch (psi) at sea level. This pressure decreases with increasing altitude as the weight of the air above decreases.
