If you consider an amount of watermolecules, they weigh at all times the same.
If you consider a volume of watermolecules, as temp increases, molecules expand, and there will be less molecules for the same volume, thus reducing weight per volume.
A porous object absorb water and is heavier. In air the water is evaporated and the object become lighter.
hevier
salted water
No water is heavier then oil.
depends if the plastic is heavier or lighter than water and if its hold air which is lighter than water
A heavier boat will sink more into the water because the weight of the boat causes it to displace more water, resulting in a lower buoyancy force. This increases how deep the boat sits in the water compared to a lighter boat of the same size and shape.
Salt water is heavier than fresh water. The salt dissolved in salt water increases its density, making it heavier than pure water.
Coal can be heavier or lighter than water depending on its type. Most types of coal are heavier than water in terms of density, however, broken bituminous coal has only a density of 0.833 kg/m3, so it is lighter than water.
Hurrdy dur
Saturn is much lighter than water. It is a gas giant made primarily of hydrogen and helium, with a density lower than that of water.
When an object is in water, it may appear lighter because of the buoyant force acting on it. The buoyant force counteracts the weight of the object, making it feel lighter in water compared to in air.
no,it is heavier than water and so it'll sink