greater
greater
Yes, given the same volume of both.
The density of air is greater at ground level because of the weight of the air above pressing down. As you go higher in altitude, there is less air above exerting pressure, leading to lower air density at the top of a mountain.
The density of a helium balloon is less than that of the surrounding air. This is why helium balloons float in the air. Helium is lighter than the nitrogen and oxygen that make up the majority of Earth's atmosphere, so it provides buoyancy for the balloon.
'Cold' air will have less volume so the density is greater.
-- If the object floats in water, then its density is less than the density of water. -- If the object sinks in water, then its density is more than the density of water. -- If the object floats in air, then its density is less than the density of air. -- If the object sinks in air, then its density is less than the density of air.
A gas with a vapor density less than 1 will float in air, while a gas with a vapor density greater than 1 will sink. Since the vapor density of the gas is 1.2, it will sink in air.
More resistance, caused by a greater density.
To float in air, the density of the balloon (divide the combined mass of balloon + contents by its volume) must be LESS than that of the same volume of air. If the gas inside the balloon has a greater density than air, the combined object (balloon + contents) won't have less density than air, either.
That depends on what fills the remainder of the bottle. If it is air, the average density of your bottle will be less than the density of the liquid.That depends on what fills the remainder of the bottle. If it is air, the average density of your bottle will be less than the density of the liquid.That depends on what fills the remainder of the bottle. If it is air, the average density of your bottle will be less than the density of the liquid.That depends on what fills the remainder of the bottle. If it is air, the average density of your bottle will be less than the density of the liquid.
Air's density is less than that of water. Water's density is almost 800 times greater than air.
The density of heated air is less than the density of cooler air.