Both synthesis and polymerization processes create chemically bonded combination of reactants. Synthesis is a reaction which uses various reactants to form one product, for example formation of water from hydrogen and oxygen. Polymerization illustrates the same process, wherein it uses simple monomer molecules in a reaction to create longer polymer chains, for example formation of proteins through polymerization of amino acids.
Given, 0.29 g of hydrocarbon produces 448ml of CO2 at STP. then, C2H5 is the emperical formula of hydrocarbon . n = 2 , hence, molecular formula will be C4H10