Q.

Cortisone is a molecular substance structure is given below and it contains 21 atoms of carbon per molecule. The mass percentage of carbon in cortisone is 69.98%. What is the molecular mass of cortisone?

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a

361.03

b

176.5

c

287.6

d

312.8

answer is A.

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Detailed Solution

252------------------------------69.8%

  ? ------------------------------- 100%

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Cortisone is a molecular substance structure is given below and it contains 21 atoms of carbon per molecule. The mass percentage of carbon in cortisone is 69.98%. What is the molecular mass of cortisone?