Which of the following has the least mass?

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(B) $2 \ g$ atom of nitrogen $= 2 	imes 14 \ g = 28 \ g$ $(b)$ $6.022 	imes 10^{23}$ atoms of $C$ has mass $= 12 \ g$. So,$3 	imes 10^{23}$ atoms o

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$3 	imes 10^{23}$ atoms of $C$

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(B) $2 \ g$ atom of nitrogen $= 2 	imes 14 \ g = 28 \ g$ $(b)$ $6.022 	imes 10^{23}$ atoms of $C$ has mass $= 12 \ g$. So,$3 	imes 10^{23}$ atoms of $C$ has mass $= \frac{12 	imes 3 	imes 10^{23}}{6.022 	imes 10^{23}} \approx 6 \ g$. $(c)$ $1$ mole of $S$ has mass $= 32 \ g$. $(d)$ $7.0 \ g$ of $Ag$. Comparing the masses: $28 \ g, 6 \ g, 32 \ g, 7 \ g$. The least mass is $6 \ g$ (corresponding to option $B$).

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