🤓 Based on our data, we think this question is relevant for Professor Addo-Mensah's class at TAMIU.
We are asked to determine how many atoms are there per cubic centimeter of Cr given the density.
We basically need to convert g → atoms.
When doing unit conversions:
▪ Put units you need to cancel out on opposite places (if it’s in the numerator then put the conversion factor with the same unit in the denominator)
▪ always raise the units to the necessary number especially when dealing with volume, area, etc.
The density of solid Cr is 7.15 g/cm 3. How many atoms are present per cubic centimeter of Cr? in atoms/cm3
As a solid, Cr adopts a body-centered cubic unit cell. How many unit cells are present per cubic centimeter of Cr? in unit cells/cm3
What is the volume of a unit cell of this metal? in cm 3
What is the edge length of a unit cell of Cr? in cm