1. A Hydrocarbon contains 7.7% by mass of hydrogen and 92.3% by mass of carbon. The relative molar mass of the compound is 78. (I) Derive the empirical formula of the compound and hence it's molecular formula (ii) Name the hydrocarbon and write it's structural formula (H=1;C=12) 2.What is a functional group? 3.Name the functional group present in the following HOMOLOGOUS series (I) Alkanols (ii) Alkanoic acid 4.State 3 characteristics of HOMOLOGOUS series.

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 .

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.