Question

Insulin contains 3.4% sulphur. What will be the minimum molecular weight of insulin ?

• A. 94.117
• B. 1884
• C. 941.176
• D. 976

Answer 1

Answer: (C)

941.176

Answer 2

For minimum molecular mass, insulin must have at least one sulphur atom in its one molecule If it has $3.4\,g\,S$, the mol. mass $=100$ If it has $32\, g S$, the mol. mass $=\frac{100\times32}{3.4}$ $=941.176$