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Calculate the number of O-atoms present ...

Calculate the number of O-atoms present inn 112 L of `CO_(2)` gas at STP.

Text Solution

Verified by Experts

At STP, number of molecules present in 22.4 L of `CO_(2)` gas
`=6.022xx10^(23)`
`therefore`Number of molecules present in 112 L of `CO_(2)` ga
`=(112)/(22.4)xx6.022xx10^(23)=5xx6.022xx10^(23)`
Now, each molecule of `CO_(2)` contains 2 atoms of oxygen.
`therefore`Number of O-atoms present in 112L of `CO_(2)` gas (at STP)
`=2xx5xx6.022xx10^(23)=6.022xx10^(24)`.
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