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The density of aluminum metal is 2.70 g/mL, the atomic mass 26.98 g/mol, the radius of...

The density of aluminum metal is 2.70 g/mL, the atomic mass 26.98 g/mol, the radius of an aluminum atom is 143 picometer and the packing density is 74% of theory. Compute Avogadro's number from this data and PLEASE state which parameter you think is causing the error.

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