Oxygen is present in a 1 L flask at a pr...

Oxygen is present in a `1 L` flask at a pressure of `7.6xx10^(-10)mm Hg`. Calculate the number of oxygen molecules in the flask at `0^(@)C`.

`2.7xx10^(9) "molecules"`

`2.7xx10^(10) "molecules"`

`2.7xx10^(11) "molecules"`

`2.7 xx10^(12) "molecules"`

Text Solution

Verified by Experts

The correct Answer is:

`PV=nRT`
`n=(PV)/(RT)implies (7.6xx10^(-10))/(760)xx(1)/(0.82xx273)`
`nimplies 0.0446xx10^(-12)`

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