Question

According to the following reaction what mass of ethene is required to produce 50 g of polythene n(CH2=CH​2)-----> -(CH2--CH2)-n ? a)100g b)50g c)100n d)50/n

Answer 1

Since you need 'n' number of molecules of ethene to make a chain of polythene that has 'n' ethene links, the number of ethene molecules remains the same as 'n'. The mass of 'n' ethene molecules is the same as mass of one polythene chain with n links. Thus you need 50 g of ethene to make 50g of polythene.