Question

Hi, i need hel p with these two problem, please. Could you give methe answar an the process??
11.80
Nickel has a face-centered unit cell with all atoms at latticepoints and an edge length of 352.4 pm. The density of metallicnickel is 8.91 g/cm3 . Whath is the mass of a nickel atom? From theatomic weight, calculate Avogadro's number.

11.81
Copper metal has a face-centered cubic structure with all atoms atlattice points and a density of 8.93 g/cm3 . Its atomic weight is63.5 amu. Calculate the edge length of the unit cell.