does air have mass?

Question

i really need the answer its for my science homework

Answer 1

Yeah it has mass.

Answer 2

Well what is air made up of? The most common elements are hydrogen, Nitrogen and of-course Oxygen. These are molecules and they are made up of atoms like everything else.

Each atom has a specific mass. So an atom of iron has more mass than that of say Hydrogen/Nitrogen but the hydrogen atom still has some mass. Though not as much.

So yes air does have mass.

Also, think of air pressure. Its the weight of all the air molecules above you. The combined pressure of them is 1 atmosphere. If you go to a higher altitude you really begin to feel the difference of that loss of pressure.

Hope this answers your question.

Answer 3

On the balloon example, you don't need to pop a balloon. Just take a yardstick and tie a string directly in the middle. Tie two balloons to each end of the ruler. Blow one balloon up. As long as they are the same type of balloon they will weigh the same. The balloon with air will drop lower because it has more mass.

An equation to test air mass can be found in the description below:

Air isn't very dense, so there
isn't as much matter in a cup of air as there is
in a cup of water. However, it does have mass,
and you can calculate it. Let's say I have
1 liter of air at 1 atm of pressure and at 25 degrees Celsius
(298K). I can use the equation PV = nRT (the gas law)
to calculate n, the number of moles of air, given
that R is a constant equal to 0.0821. Now, if you assume
that about 70% of those moles are nitrogen gas (weighing
28 grams per mole) and 30% are oxygen (weighing 32 grams per mole)
you can estimate how many grams of air you would have.

Answer 4

Yes. The atmosphere is composed of 78% nitrogen, 21% oxygen, and 1 percent other gases such as argon or helium.

Because air has mass, it is a body, and as a body, it reacts to the scientific laws of bodies in the same manner as other gaseous bodies. This body of air resting upon the surface of the earth has weight, and at sea level develops an average pressure of 14.7 pounds per square inch, or 29.92 inches of mercury.

Answer 5

Yes, it does.. Here is a lesson plan I found... it has activities the teacher will use to show her students that air has mass. Check it out and maybe try the activities, so you will gain a better understanding of this concept.

http://www.umd.umich.edu/sep/students/jflecha/LessonPlan1.pdf

Answer 6

Mass ?? , well it duz --- an average room of air at sea level 14.7 psi = around 1 half of 1 kilo ... of course the size of the room is important :-0

Answer 7

Yes it does. You can test this by balancing a ruler on your finger and tying an equally full balloon to each end. pop one and the ruler will become unbalanced.

Answer 8

If air did not have mass, then tornadoes would cause no damage.

Answer 9

It does, 1,29 kilogram per cubic meter,

according to "Karlebo Handbok".

Answer 10

yes