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Cortisone is a molecular substance conta...

Cortisone is a molecular substance containing 21 atoms of carbon per molecule. The mass percentage of carbon in cortisone is `69.98%`. It's molar mass is

A

`176.5 gmol^(-1)`

B

`252.2 gmol^(-1)`

C

`287.6 gmol^(-1)`

D

`360.1 gmol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Let molar mass = M `" "` Mass of 21 carbon atoms = 252
% of carbon `=(252xx100)/(M)=69.98`, molar mass `=360.1 g"" mol^(-1)`
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