Calculate the volume of 10^23 molecules of oxygen at STP
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volume at NTP occupied by 10^21 molecules of Oxygen
No. of moles = No. of molecules / N .... ( N is avagadro number....)...
No. of moles = 10^21 / 6 × 10^23 ...
= 1/6 × 10^-2 = 0.0016 ...
Volume at STP = moles × 22.4
= 0.0016 × 22.4 = 0.037 L.
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