Request a call back

In a polymer sample 30% of molecules have a molecular mass 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer? (1) 40,300, (2) 30,600, (3) 43,333, (4) 50,400

Asked by patra04011965 | 14 May, 2019, 07:55: AM
The correct option is (3)
Given:

n1 = 30

n2 = 40

n3 = 30

M1 = 20000

M2 = 30000

M3 = 60000

We have,

Mass average molecular mass of the polymer is 43333.
Answered by Varsha | 14 May, 2019, 11:08: AM

## Concept Videos

CBSE 12-science - Chemistry
Asked by me.shekharhimanshu | 19 Jun, 2020, 12:03: PM
CBSE 12-science - Chemistry
CBSE 12-science - Chemistry
Asked by yashwant.mcr3004 | 10 Oct, 2019, 12:31: PM
CBSE 12-science - Chemistry
Asked by patra04011965 | 14 May, 2019, 07:55: AM
CBSE 12-science - Chemistry
Asked by sanjeet.kumar | 12 Mar, 2019, 02:18: PM
CBSE 12-science - Chemistry
Asked by Topperlearning User | 22 Jun, 2016, 12:37: PM
CBSE 12-science - Chemistry
Asked by Topperlearning User | 22 Jun, 2016, 12:34: PM
CBSE 12-science - Chemistry
Asked by Topperlearning User | 17 Oct, 2014, 09:40: AM
CBSE 12-science - Chemistry
Asked by Topperlearning User | 17 Oct, 2014, 09:40: AM
CBSE 12-science - Chemistry
Asked by Topperlearning User | 23 Jun, 2014, 04:35: PM