# An element has hcp packing with a hexagonal unit cell. Its density is 21000 kg/m3 and the unit cell volume is 2.94 x 10^-29 m3. Calculate the molar mass (g/mol) of the element to three significant figures.Avogadro's No. (mol-1)6.022x10^23

Question

An element has hcp packing with a hexagonal unit cell. Its density is 21000 kg/m3 and the unit cell volume is 2.94 x 10^-29 m3. Calculate the molar mass (g/mol) of the element to three significant figures.

6.022x10^23