Find the volume at $STP$ and mass of $6.022 \times 10^{23}$ molecules of $O_2$. (Molar volume $= 22.4 \ L$)
- A$22.4 \ L, 32 \ g$
- B$11.2 \ L, 16 \ g$
- C$44.8 \ L, 64 \ g$
- D$22.4 \ L, 16 \ g$
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$(iii)$ $52$ $g$ of $He$.
$(i)$ $52$ moles of $Ar$
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$(iii)$ $52$ $g$ of $He$.
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