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The total number of air molecules in a r...

The total number of air molecules in a room of capacity `25.0 m^3` at a temperature of `27^circ` C and 1 atm pressure is

A

`6.1 x 10^20`

B

`6.1 x 10^22`

C

`6.1 x 10^26`

D

`6.1 x 10^24`

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