Question

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

Answer 1

@JFraser

Answer 2

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

Answer 3

wait i am trying

Answer 4

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

Answer 5

i got molar mass as 9

Answer 6

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

Answer 7

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