The number of gas molecules striking per...

The number of gas molecules striking per second per square meter of the top surface of a table placed in a room at `20^(@)C` and 1 atmospheric pressure is of the order of `(k_(B) = 1.4 xx10^(-23)` J/K, and the average mass of an air molecules is `5xx10^(-27)`kg)

A

`10^(27)`

B

`10^(23)`

C

`10^(25)`

D

`10^(29)`

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The correct Answer is:

A

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