Question

Calculate the mass of a unit cell of copper crystal (Atomic mas=63.54u)

Answer 1

Answer:

The weight of one mole of a substance is equal to its atomic mass in grams , therefore

1 mole of Al =27g of Aluminium

Also , 1 mole contains Avogadro number of atoms

1mole=6.023×1023 atoms of Aluminium

Therefore

1 mole of Al - 27 g of aluminium - 6.023×1023 atoms of aluminium

Explanation: