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x L of `N_(2)` at STP contains `3xx10^(22)` molecules. The number of molecules in `x//2` L of ozone at STP will be
A. `3xx10^(22)`
B. `1*5xx10^(22)`
C. `1*5xx10^(21)`
D. `1*5xx10^(11)`

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Correct Answer - B
Equal volume under similar conditions of temperature and pressure have some no. of molecules.

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