Question

Cobalt has a density of 8.85 g/cm3, and the mass of a cobalt atom is 9.79 ✕ 10−26 kg. (a) If the atoms are spherical and tightly packed, what is the volume of a cobalt atom?

Answer 1

• Density=8.85g/cm^3
• Mass=9.79×10^{-26}kg=9.79×10^{-23}g

`\\ \sf\longmapsto Density=(Mass)/(Volume)`

`\\ \sf\longmapsto Volume=(Mass)/(Density)`

`\\ \sf\longmapsto Volume=(9.79* 10^(-23))/(8.85)`

`\\ \sf\longmapsto Volume=1.106* 10^(-23)cm^3`