Question

Calculate the number of unit cells in 8.1 g of aluminium, if it crystallises in a face centered cubic structure. (Atomic mass of Al = 27 g mol-¹ ).

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Answer 1

Answer:

4.52×1023 unit cells.

Explanation:

8.1 g of aluminium as 6.022×102327×8.1=1.807×1023 atoms of Al. FCC unit cell has 4 atoms of aluminium. =4.52×1023 unit cells.

Answer 2

Answer:

8.1 g of aluminium as 6.022×102327×8.1=1.807×1023 atoms of Al. FCC unit cell has 4 atoms of aluminium. =4.52×1023 unit cells.