The number of unit cells in 58.5 g of NaCl i | vedclass

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Question

(C) The molar mass of $NaCl$ is $58.5 \ g/mol$.Given mass of $NaCl = 58.5 \ g$,which is equal to $1 \ mol$.Number of $NaCl$ formula units in $1 \ mol

Vedclass · Accepted Answer

$1.5 	imes 10^{23}$

Vedclass · Answer

(C) The molar mass of $NaCl$ is $58.5 \ g/mol$.Given mass of $NaCl = 58.5 \ g$,which is equal to $1 \ mol$.Number of $NaCl$ formula units in $1 \ mol = 6.022 	imes 10^{23}$.Since one unit cell of $NaCl$ (face-centered cubic) contains $4$ formula units of $NaCl$,the number of unit cells is calculated as:$	ext{Number of unit cells} = \frac{	ext{Total formula units}}{4} = \frac{6.022 	imes 10^{23}}{4} \approx 1.5 	imes 10^{23}$.

The number of unit cells in $58.5 \ g$ of $NaCl$ is nearly

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