The change in voice is caused by the helium allowing the vocal cords to vibrate differently in the lighter gas.
The gas inside of a balloon is less dense than the air outside of it if the balloon floats. If the balloon does not float the density of the gas inside of it is equal to or more dense than that around it.
I would say that depends on the size of the balloon, the gas used to fill the balloon and the atmospheric pressure. Based on these parameters, a balloon may take anywhere from a few minutes to few hours to deflate.
Once the balloon gets high enough in the atmosphere, the ambient atmospheric pressure becomes very low (say 20mb = 2000Pa). There is a pressure gradient force from the high pressure of the air inside the balloon to the air in the environment outside of the balloon, working across the balloon material. Once this PGF becomes stronger than the tension of the balloon material, the balloon will pop.
Well this depends on the humidity. Lets say the humidity is 20%. This means 20% of the air is water vapor. So approximately 20% of the air you inhale will be water vapor.
inhale and exhale into a balloon.
One balloon full? Nothing. We breathe Nitrogen constantly. It is only when you increase the proportion inhaled in comparison to Oxygen does it begin to have an effect. A constant stream of Nitrogen would suffocate you.
Inhale = aspirer or respirer Exhale = expirer
The change in voice is caused by the helium allowing the vocal cords to vibrate differently in the lighter gas.
Inhale and exhale.
Balloon is called: POOCHEEG in Armenian.
You can do that, yeah.
Easy, just open your mouth, inhale, and say the word "no"
bal-lune
Hydrogen
When your diaphragm deflates (inhaling), it allows more oxygen into your lungs expanding them like a balloon and expanding your chest.
Yes if you tied the mouth of balloon tight enough that the gas doesn't leak and the reaction produce enough gas that would inflate the balloon. And in my knowledge you can try Hydrogen-peroxide + Iron nitrate ,Its safe but do not try to inhale the gas liberated and hold the container with some tong because they get heated up.