Convert 8.57 g of Ca3(PO4)2 into each of the following:
a) number of moles of Ca3(PO4)2
b) number of moles of Ca
c) number of Ca atoms
d) number of molecules of Ca3(PO4)2
e) number of grams of P
*all of the numbers in the formula are supposed to be subscripts, of course*
a) number of moles of Ca3(PO4)2
b) number of moles of Ca
c) number of Ca atoms
d) number of molecules of Ca3(PO4)2
e) number of grams of P
*all of the numbers in the formula are supposed to be subscripts, of course*

a) (8.57 g) / (310.1782 g/mol) = 0.0276 moles
b) 0.0276 moles x 3 = 0.0828 moles
c) 0.0828 moles x (6.022 x 10^23) = 4.99 x 10^22 atoms
d) 0.0276 moles x (6.022 x 10^23) = 1.662072 x 10^22 molecules
e) 0.0276 moles x 2 x 30.9738 g/mol = 1.71 g P
b) 0.0276 moles x 3 = 0.0828 moles
c) 0.0828 moles x (6.022 x 10^23) = 4.99 x 10^22 atoms
d) 0.0276 moles x (6.022 x 10^23) = 1.662072 x 10^22 molecules
e) 0.0276 moles x 2 x 30.9738 g/mol = 1.71 g P