(a)
Interpretation:
The given structural formula of styrene has to be redrawn showing all atoms in it.
Concept Introduction:
The Structural formula of a compound shows how the atoms are arranged in a molecule and, in particular, shows which functional groups are present.
Functional group: They are certain substitutes in the organic molecules which determine the characteristic reactions taking place in it.
Line-angle drawing:
- • The structure of a molecule can be represented using a line-angle drawing.
- • Each vertex is assumed to have one carbon atom.
- • If a line is extended from the backbone indicates another carbon atom which will be a methyl group unless the
symbol for another element is given. - • In line-angle drawing, hydrogen atoms are not indicated.
(b)
Interpretation:
The styrene chemical formula has to be identified.
Concept Introduction:
Chemical formula of a compound is the symbolic representation of its atomic constituents.
(c)
Interpretation:
The molar mass for polystyrene consists of
Concept Introduction:
Molar mass: It is obtained by dividing the mass of substance with the amount of substance and the S.I. unit of molar mass is
Monomer: A molecule is considered as monomer when this molecule bonds with another identical molecule which results to form polymer.
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