Question

How many calcium atoms, Ca, are in 8.34 mol of calcium? 

Answer 1

1 mole of anything is 6.023x10^23 atoms (Avogadro's number)

8.34mols = ?

= $\dfrac{8.34mol x 6.023x10^23}{1mol}$

= 5.023x10²⁴ atoms