The edge of a body-centered -cubic unit cell (which contains two atoms per unit cell) of an element Y was found to be 3.16x10^-8cm.The density of the metalis 19.35g*cm^-3. What is the approximate molar mass of Y?

Answer 1

first you take (3.16x10^-8)^3)=3.15^-23
thenyou take the 2 atoms and divide it by (3.15x10^-23)= 6.34x10^22
then:you take(6.34x10^22)and divide it by( 6.022x10^23)= 0.105
last you take 19.35 divid by 0.105= and your answer is 184g*mol