Solve Mass-Mole Conversion: 1kg CaF2 = 13mol

[webz]

Homework Statement

Show that 1kg of CaF2 equals 13 mol.

Homework Equations

Molar mass CaF2 = 78.074g/mol

The Attempt at a Solution

I can take 78.074g/mol CaF2 * 13 mol = 1014.962 g CaF2
But I can't do this equation backwards, I'm missing a step. I would think if I'm converting g/mol to mol, I would divide by how many grams I have (1000 in this case), but 78.074g/mol CaF2 / 1000g $$\neq$$ ~13mol.Edit: I'm dumb. 1000/78.074 = ~13mol. Kill me now.

 

[Borek]

You got it correctly on your own, there is still hope

Pay attention to units:

$$\frac {78 \frac g {mol}} {1000 g} = 0.078 \frac 1 {mol}$$

- and it is obvious what went wrong.