0
The average molecular weight of dry air is 28.96 g/gmol.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
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)
What is the average molecular weight of mobiltherm 603 oil?
which is the average molecular weight 603 Mobiltherm?
Molecular weight of petrol and diesel?
233 g/mole is average molecular weight of deseil
How do you calculate number average molecular weight given molecular weight range and fraction?
Molecular weight is just an older term for molar mass. They are the same.
What is the average molecular weight of polytetrafluoroethylene or Teflon?
53,720 g/mol
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
What is the average molecular weight of a polymer?
Simply looking at the expressions that derive weight average and number average one can see that the weight average is a second order expression where number average is a first order. To put it more simply: weight averaged molecular weight emphasizes heavy molecules more than light ones; number averaged molecular weight says a molecule is a molecule and counts them both equally.
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 Molecular weight of diesel fuel?
233 g/mole estimated average molecular weight. Diesel fuel, like other petroleum products, is not one specific chemical compound but a complex mixture of organic compounds separated into ranges by their boiling point. For this reason, diesel doesn't have a specific molecular weight. However, you can talk about an "average molecular weight" of the mixture. EPA lists an estimated average molecular weight for diesel of 233 g/mole. http://www.epa.gov/athens/learn2model/part-two/onsite/es.htm The actual average molecular weight of diesel will vary from sample to sample depending on what grade of diesel it is (i.e. #1 diesel is light diesel), feedstock of the diesel, and the refining process of the diesel.
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.
Number-average molecular weight of a polypropylene is 1000000 gmol Compute the number-average degree of polymerization?
i got 23765.4
What is the molecular weight of chymotrypsin?
It has a molecular weight of 21,600 Daltons
