yes
There's been less inflation.
It might make you light headed or possibly pass out, but it won't kill you.
helium is less dense than air. :) so helium will float better than air
Because it is a safe gas that is less dense than air, thus balloons float in air
hellium is a gas that makes light objects float e.g. balloons
Hot air, hydrogen or helium are lighter than cold air.
Water balloons are typically made of thinner material than latex balloons, so they can hold less air in comparison. Also, water balloons are designed to hold water, not air, so they may burst if overinflated with air. Latex balloons are designed specifically for holding air and can typically hold more air than water balloons.
Rubber balloons are more porous than plastic balloons, so they allow air to slowly escape through the surface more easily. This makes rubber balloons deflate faster compared to plastic balloons, which have a tighter seal and are less permeable to air.
Balloons rise because the gas inside them is less dense than the surrounding air. When the gas molecules in the balloon are heated, they spread out, causing the balloon to become less dense and rise.
Helium is less dense than air, and therefore the balloon will float.
Yes, tattoos hurt no matter what area of the body they are on. Some areas hurt less than others, but an area that is very painful to one person may be mild to someone else. The back of the leg will typically hurt less than the front, since the front is closer to bone. Fleshier areas hurt less than when working on bone.
The density of helium is less than the density of air. You can infer this without doing any calculations by thinking about the classic example of inhaling the helium from a balloon and talking. Your voice gets squeeky high because helium is less dense than air - that is, your sound waves propagate faster through helium than through air, therefore helium is less dense.