Question

Insulin contains 3.4 % sulphur. Calculate minimum molecular weight of insulin.

• A. 614.27
• B. 941.17
• C. 841.27
• D. 714.17

Answer 1

Answer: (B)

941.17

Insulin contains $3.4\%$ sulphur means $32gm$ of sulphur $=3.4\%$ of total weight

$\Rightarrow 32=3.4\times \frac{x}{100}$

$\Rightarrow x=\frac{32\times 100}{3.4}$

$\Rightarrow x=\frac{3200}{3.4}$

$\Rightarrow x=941.17$

Thus, the minimum molecular weight of insulin is $941.17$ g/mole

Hence, the correct option is (B).