It depends on if you want the volume of the gas itself which is impossible to calculate because it changes based on the container it is in, but if you want to find the volume of the gas in relation to the container it is in then it is possible and fairly easy to do, can you calculate the volume of a gas technically yes you can but it will always be different if you change the container it is in
Answer: Yes, just the measure the volume of the container it is in.
Explanation:
Solid state : It is a state in which the particles are closely packed and does not have any space between them.This state has a definite shape and volume.
Liquid state : It is a state in which the particles are present in random and irregular pattern. The particles are closely arranged but they can move from one place to another. This state has a definite volume but does not have a fixed shape.
Gaseous state : It is a state in which the particles are loosely arranged and have a lot of space between them.This state has indefinite volume as well as shape. They occupy whole of the container in which they are put.
Thus the the volume of a gas can be measured by measuring the volume of the container it is in.
