The sulphur content of cystine is 26.7%. Given that cystine contains two sulphur atoms, what is the molecular weight of cystine?

The sulphur content of cystine is 26.7%. Given that cystine contains t

1.	The sulphur content of cystine is 26.7%. Given that cystine contains two sulphur atoms, what is the molecular weight of cystine?
Answer» Solution :Atomic mass of sulphur is 32, hence for TWO sulphur atoms, the molecular formula will have 64g sulphur. THUS, is 26.7 g sulphur, then molecular WEIGHT `= 100g` acid if 64g sulphur is PRESENT molecular weight `= (100 xx 64)/(26.7) = 239.7 g mol^(-1)`