Posted by Matt on .
The density of iron at 25 C is 7.871 g/cm^3
what is the volume of one mole of solid iron at 25 C?
i understand that volume = m/d but how would i go about solving this?

Chemistry 
bobpursley,
Isn't one mole of iron equal to its atomic mass in grams? Can you look up the atomic mass of iron?

Chemistry 
Matt,
thanks, this is how i calculated it:
1 mol Fe/.141 mol/cm^3 = 7.10 cm^3
(the .141 came from converting the density in to moles)
is that correct?
then the next step in the problem is to find the volume of 1 mol of Fe atoms assuming each atom to be spherical. the atomic radius is 0.126 nm.
so i calculated:
4/3 pi (0.126 nm)^3 = .00838 nm^3
is that correct?
thank you for your help.