If the mass of 0.25 mole of an element X is 2.25 g , the mass of one atom of X is

Question

anonymous · Answer

@JFraser

aaronq · Answer

use these two formulas to interconvert from atoms, moles mass

             $n=\dfrac{m}{M}$   and   $n=\dfrac{N}{N_a}$

n=moles
m=mass
M=molar mass
N=number of particles/atoms/molecules
$N_A$=avogadros number

anonymous · Answer

wait i am trying

aaronq · Answer

so you wanna find how many atoms there are (with the second formula), then divide the mass by the number of atoms.

anonymous · Answer

i got molar mass as 9

aaronq · Answer

well you don't really need the molar mass, i just posted that formula for completion.
Follow what i said in my previous post.

joannablackwelder · Answer

I did this one like a conversion problem. 
1 atom of X * (1 mole/6.02x10^23 atoms)*(2.25 g X/0.25 mole X) = ? g X