density & buoyancy

Metals have high density and are very heavy. Iridium and osmium have the highest densities where as lithium has the lowest density..

The higher density of liquids compared to gases is due to the fact that molecules of liquids are more closely packed than gases. In general, the density of liquids is higher than gases and it decreases with increase in temperature. It has been found that the densities..

Density - 0.5 kg of cotton occupies more space than 0.5 kg of iron. The particles of iron are closely packed while that of cotton are loosely packed. The amount of iron packed in a unit volume is more. This explains as to why iron is heavier than the same volume of cotton. In Physics, we ..

Its density is 1.513 g cm - 3 at 20 o C. Thus pure nitric acid is about 1 times as dense as water while commercial nitric acid has a lower density..

Chloroalkanes are lighter than water while bromides and alkyl iodides are heavier. With the increase in the size of the alkyl group, the densities go on decreasing in the order of : fluoride > chloride > bromide > iodi..

The densities of alkali metals are low as compared to other metals, with Li, Na and K being even lighter than water (K is lighter than Na). While alkali metals do have close packing of metal atoms in their lattice the large size of their atoms cause them to have low densities. ..

Alkenes are lighter than wate..

Its vapor density is 8.5. Hence it is lighter than air (vapor density of air = 14.4..

Its vapor density = 18.25 (Vapor density of air = 14.4), hence it is nearly 1.25 times denser than ai..

Its vapor density is 32, while the vapor density of air is 14.4. Hence sulphur dioxide gas is 2.2 times denser than ai..