help with these please

1. In a BCC structure (see below schematic), a=0.35 nm, the atomic weight of the material is 141 g/mol, Avogadro constant is 6.023x10 atoms/mol, answer the following questions (6 points). M 1.1. Draw a [127] direction (1 point). 1.2. Draw a (210) plane (1 point). 2 2 1.3. Calculate the theoretical density of the material (4 points)