$5.6 \, L$ of oxygen at $STP$ contains .............
- A$6.02 \times 10^{23} \, \text{atoms}$
- B$3.01 \times 10^{23} \, \text{atoms}$
- C$1.505 \times 10^{23} \, \text{atoms}$
- D$0.7525 \times 10^{23} \, \text{atoms}$
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