Yes.
Mass is a property of matter. All matter has mass. Air is matter in the gaseous phase.
Anything that takes up space has matter. An atom takes up space, and air is made of atoms. (Oxygen, Carbon, Hydrogen, Nitrogen mainly..) . So since it takes up space, it has mass.
You can visualize this by simply blowing up a balloon. The balloon is empty at first. As you inflate the balloon with air from your lungs, the flexible sides of the balloon must expand to accommodate the increased volume of air. The more air you put in, the harder the air presses against the sides of the balloon, and the firmer the balloon gets. Pretty soon the balloon has stretched as far as it can, and then >bang<! The pressure of air is too much, and it bursts.
If your Basketball is "flat", it simply doesn't have enough air inside it to keep it firm. More air = more pressure.
So you can see clearly that "air", even though it is invisible, does indeed have mass.
This forms a front it can be a cold or warm front
A large body of air with relatively uniform properties is called an air mass. Air masses are characterized by their temperature and moisture content, which is influenced by the region over which they form. When an air mass moves over a different area, it can bring its unique weather conditions to that region.
warm air mass and cold air mass
The mass of the bag with air will be the sum of the mass of the bag itself and the mass of the air inside it. The mass of the air can be estimated by knowing the dimensions of the bag and the density of air at the given conditions.
Yes air has mass. It is the mass of the air above a point on earth that is responsible for the air pressure.
An Warm air mass
the cold air mass took the place of the large air mass
the mass air flow sensor detects the flowing of mass air into the engine while the mass air flow meter detects the amount of mass air flowing into the ingine.
If you mean when a mass of cold air meets a mass of warm air, then a front is created.
the result of air mass/air weight is air pressure.
All air has mass. Warm air of the same volume as cold air will have a lower mass.
A maritime polar air mass is characterized as a cold and moist air mass.