The Student Room Group

Quick Query on hydroxyapatite

a.) How many atoms are in the unit cell for Hap?
b.) What are the unit cell parameters? Please use the attached diagram to determine.
c.) Calculate the unit cell volume for HAp.
d.) Calculate the density for HAp.
e.) Calculate the packing factor for HAp.
f.) Derive an equation for calculating the specific surface area for hydroxyapatite particles consisting of unit cell dimension particles. Calculate the value for the specific surface area of these particles in meters squared per gram (m^2/g). What is interesting about the magnitude of this number?
g.) How would you differentiate between a polycrystalline, a single crystalline, and a nanocrystalline sample of HAp?
No-one's going to do your homework for you. Post back with what you're stuck on when you've had a go at answering it, rather than just dumping the question wholesale.

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