$1~\text {cm}^3$ sample of oxygen has been given at normal temperature and pressure which sample has more number of molecules?
✓
Answer
For N molecules, Ideal gas equation $PV = NkT$ $ N=\frac{PV}{kT} $ Since for both the gases pressure $P =1$ atmosphere temperature $T =0^{\circ} C =273 K$ and volume $V =1 cm^3$ and Boltzmann constant k are same hence in both the gases number of molecules are equal.
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