Iron crystallises in a bcc system with a lattice parameter of 2.861 Å. Calculate the densityof iron in the bccc system (atomic weight of Fe = 56,
`N_A=6.02xx10^23 mol^(-1)`

Calcium metal crystallises in a face centered cubic lattice with edge length of 0.556nm. Calculate the density of the metal. [Atomic mass of calcium 40 g/mol] [N_(A) = 6.022 xx 10^(23) " atoms/ mol"]

Iron ( alpha -from) crystallises in a body - centred cubic system with edge length 2.86 A. The density of iron is : (At.wt of Fe=56)

The number of atoms in 0.1 mol of a tetraatomic gas is ( N_(A) = 6.02 xx 10^(23) mol^(-1) )