Problem: The density of solid Cr is 7.15 g/cm 3. How many atoms are present per cubic centimeter of Cr? in atoms/cm3As a solid, Cr adopts a body-centered cubic unit cell. How many unit cells are present per cubic centimeter of Cr? in unit cells/cm3What is the volume of a unit cell of this metal? in cm 3What is the edge length of a unit cell of Cr? in cm

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FREE Expert Solution

PART 1

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.