Question

insulin contains 3.4% sulphur by mass what will be the minimum molecular weight of insulin

Answer 1

3. 4 g of sulphur is present in 100 g of insulin .
32 g of sulphur will be present in 100\3.4 ×32 g
insulin = 941
molecular mass of insulin is about 941 amu........

Answer 2

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answer is 941