It depends on the state of the water. Water vapor is lighter than air. Liquid or solid water (ice) are more dense and heavier than air.
They are not really lighter, they only seem lighter. Objects weigh the same in water as in air, but in the water, there is an additional force, of the water pushing the object up.
Yes, helium will float in water. Helium is lighter than air, so it will also be lighter than water and rise to the surface when submerged in water.
Moist air is heavier than dry air, because of the water.
HYDROGN IS 14 TIMES LIGHTER THAN AIR.
There are many, but one is Helium
depends if the plastic is heavier or lighter than water and if its hold air which is lighter than water
Objects are more buoyant in water than in air.
They are not really lighter, they only seem lighter. Objects weigh the same in water as in air, but in the water, there is an additional force, of the water pushing the object up.
Yes, helium will float in water. Helium is lighter than air, so it will also be lighter than water and rise to the surface when submerged in water.
Water isn't "heavy." Liquid water is more dense than air, yes, but water vapor is (significantly) lighter than air. Water is a liquid at temperatures far higher than what might be expected based on its molecular weight because of hydrogen bonding.
Moist air is heavier than dry air, because of the water.
Water constantly pushes upwards against an object making it seem lighter.
Snow is lighter than water because it is less dense. Snow forms when water vapor in the air freezes into ice crystals, creating a structure with more air pockets compared to liquid water. These air pockets make snow less dense, allowing it to float on water and appear lighter.
Yes, ozone is lighter than air.
Helium is lighter than air and this causes the air to push it up. (just as water pushes up things that are lighter than it i.e. a boat) This is called buoyancy
HYDROGN IS 14 TIMES LIGHTER THAN AIR.
100% of hydrogen is lighter than air