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  4. Insulin contains 3.4 % sulphur. The minimum molecular weight of insulin is

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Q. Insulin contains $3.4 \%$ sulphur. The minimum molecular weight of insulin is

Organic Chemistry – Some Basic Principles and Techniques

Solution:

Minimum mass of sulphur $=$ wt. of its one atom $=32$
$3.4\, g$ of sulphur present in $100\, g.$
$\therefore 32\, g$ of sulphur present in $=\frac{100 \times 32}{3.4}=941.17$