Iron and vanadium both have the bcc crystal structure, and v forms a substitutional solid solution for all concentrations at room temperature. compute the unit cell edge length for a 40 wt% fe - 60 wt% v alloy. the room-temperature density and atomic weight of fe are 7.87 g/cm3 and 55.85 g/mol, the room-temperature density and atomic weight of v are 6.10 g/cm3 and 50.94 g/mol, respectively.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o