(a) Define diffusion (b) State Graham's law of diffusion

Which of the following concept is not an evidence of the particle nature of matter?

A steel needle floating on water, sinks when kerosine is added to the water. This is because the kerosine

A diver is 5.2m below the surface of water of density 1000Kgm-3. If the atmospheric pressure is 1.02 x 105pa. Calculate the pressure on the diver [g = 10ms-2]

Which of the following statements about the mass and the weight of a body is not correct? its

The molecular structure of a liquid is such that

The diagram above represent displacement D, versus time, t graph of a progressive wave. Deduce the frequency of the wave

Calculate the change in volume when 90g of ice is completely melted. [density of water = 1g cm-3, density of ice = 0.9cm-3]

An object weighs 60.0N in air, 48.2N in a certain liquid X, and 44.9N in water, Calculate the relative density of X