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Density of a metal from its molar mass, fcc structure and the volume of its unit cell

The same question, asked 2 times: May 2022 S1*, 16 Apr 2026 S2. Every wording below, oldest first.

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  1. Question 1

    May 2022 S1

    71
    Calculate the density of metal having volume of unit cell 64×10−2464 \times 10^{-24} cm3^3 and molar mass of metal 192 g mol−1^{-1} containing 4 particles in unit cell.

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  2. Question 2

    16 Apr 2026 S2

    21
    When silver crystallizes, it forms face centered cubic cells, if the volume of unit cells 6.84×10−23 cm36.84 \times 10^{-23}\ \mathrm{cm^3}. Calculate the density of silver. (Molar mass of silver is 108 g/mol, NA=6.022×1023N_A = 6.022 \times 10^{23})

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