1L of a gas is at a pressure of `10^(-6)` mm of Hg at `25^(@)C`. How many molecules are present in the vessel.

Options

A. `3.2xx10^(6)`
B. `3.2xx10^(13)`
C. `3.2xx10^(10)`
D. `3.2xx10^(4)`

Explanation

(b) `(p_(1)V_(1))/(T_(1))=(p_(2)V_(2))/(T_(2))Rightarrow (10^(-6x)xx1000)/(298)=(760xxV_(2))/(273)`
Number of molecules
`(6.02xx10^(23))/(22400)xx1.2xx10^(-6)`
`3.2xx10^(13)`