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DNA has density 1.1 g//mL. And its molec...

`DNA` has density `1.1 g//mL`. And its molecular weight is `6xx10^(3) g//"mol"`. Average volume occupied by its single molecule will be :

A

`9.1xx10^(-20) cc`

B

`9.1xx10^(-21) cc`

C

`9.8xx10^(-21) cc`

D

`9.6xx10^(-20) cc`

Text Solution

Verified by Experts

The correct Answer is:
B
`wt`. Of `1` molecule `=(6xx10^(3))/(6.02xx10^(23))`
volume occupied by its
`=("mass")/("density")=(6xx10^(3)//6.03xx10^(23))/(1.1)mL`
`=9.1xx1^(-21)cc`
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