yes
No
Convection.
It's a gas. The air molecules are free to move around anywhere in the balloon.
As The Balloons are made up helium gas.the helium gas molecules are smaller than air molecules,so they pass through the skin of the balloon .hence ,gradually the balloon becomes airless and looses flight.
The air molecules slow down and it deflates.
a particle of hellium is small enough to fit in between the molecules of latex (or whatever the balloon is made of) and eventually leaks out due to diffusion. If the environment the balloon is in has the same amount of hellium in it as the balloon, it won't deflate.
Imagine inhaling to blow in a balloon. You will take in air, hold it in your mouth and blow it into the balloon. Some of it will be the carbon dioxide you were exhaling but most of it will be the air you just breathed in. So, the gas inside the balloon will be a mixture, that is, air.
The number of molecules is 0,90332112855.10e23.
It decreases.
the process of diffusion
An inflated balloon bursts if it is pressed hard because the molecules inside the balloon squeeze when it is pressed hard and air exerts pressure so the balloon bursts and let the air molecules escape from the balloon.
This depends on the mass of nitrogen contained in the balloon.
the heat makes the molecules inside the balloon travel faster, pushing outward on the balloon. This, the balloon expands when heated
What keep balloon inflated is not the molecular forces but the kinetics energy of the gas molecules made the molecules to bump and create the pressure inside the balloon.
Diffusion
The latex balloon and to a lesser extent mylar, also, is actually porous and has tiny tiny spaces between the latex molecules. The molecules do not fit together with no space between them, and the helium molecules are so small that they are able to fit between the molecules of the balloon and float out and away.
they pop