The reaction of butan-2-ol with concentrated aqueous hbr goes with partial racemization, giving more inversion than retention of configuration. propose a mechanism that accounts for racemization with excess inversion. (b) under the same conditions, an optically active sample of trans-2-bromocyclopentanol reacts with concentrated aqueous hbr to give an optically inactive product, (racemic) trans-1,2- dibromocyclopentane. propose a mechanism to show how this reaction goes with apparently complete retention of configuration, yet with racemization.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

here are some of the ways in which chemical and nuclear reactions differ.

explanation: