Molecular Masses of Polymers

The most suitable method for determination of the molecular mass of polymer is?

In a polymer sample, the molecular weight of $30$ molecules is $25,000$, molecular weight of $25$ molecules is $30,000$ and molecular weight of another $40$ molecules is $43,000$ then calculate the weight average molecular weight (${\stackrel{-}{\mathrm{M}}}_{\mathrm{w}}$) of the polymer.

In a polymer sample, the molecular weight of $10$ molecules is $20,000$, molecular weight of $30$ molecules is $35,000$ and molecular weight of another $20$ molecules is $40,000$ then calculate the number average molecular weight (${\stackrel{-}{\mathrm{M}}}_{\mathrm{n}}$) of the polymer.

Explain the determination of molecular mass of polymers by number average molecular weight method.

Polymer properties are closely related to their molecular mass, size and _____ .

Define molecular mass of a polymer.

Explain the method of determining the molar mass of the polymer.

In a polymer sample, the molecular weight of $20$ molecules is $20,000$, molecular weight of $40$ molecules is $30,000$ and molecular weight of another $20$ molecules is $40,000$ then calculate the number average molecular weight (${\stackrel{-}{\mathrm{M}}}_{\mathrm{n}}$) of the polymer.

Explain the determination of molecular mass of polymers by weight average molecular weight method.

Write a short note on molecular mass of polymers.

Why molecular weight of polymers is taken as average molecular weight. How many types average molecular weight can be represented? Explain each type.

Why PDI of proteins is one?

What is polydispersity index? Explain.

Write formula for number average molecular weight (${\stackrel{-}{\text{M}}}_{\text{n}}$).

Polymers have

Number average molecular mass, $\stackrel{-}{M_n}$ and weight average molecular mass $\left({\stackrel{-}{M_{ }}}_w\right)$of synthetic polymers are related as

Polymers have