Question

The number fraction of a protein with molar mass MA=104 g mol-1 in an unknown bimodal mixture of protein species is nA=0.2. The weight fraction of this protein in the same mixture is wA=0.3.

(i) What is the molar mass of the second protein species MB in the mixture?

(ii) What is the number-average molar mass Mn of the mixture?

(iii) What is the weight-average molar mass Mw of the mixture?

(iv) What is the PDI of the mixture?

Answer 1