Which sample contains the largest number of atoms? (A) Content not found (B) \( 1 \mathrm{mg} \)...

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Which sample contains the largest number of atoms?
(A) Content not found
(B) \( 1 \mathrm{mg} \) of \( \mathrm{N}_{2} \)
(C) \( 1 \mathrm{mg} \) of \( \mathrm{Na} \)
(D) \( 1 \mathrm{~mL} \) of water
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