Calculate the number of unit cells in $0.79 \ g$ of a metal if the product of the density and the volume of the unit cell is $1.58 \times 10^{-22} \ g$.

  • A
    $3.96 \times 10^{21}$
  • B
    $1.72 \times 10^{21}$
  • C
    $4.46 \times 10^{21}$
  • D
    $5.0 \times 10^{21}$

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