Question

If you have a 15.055*10^22 atoms, using Avogadro's Number, how many moles is thatequivalent to?

Answer 1

$\begin{gathered} 1mole=6.022x10^{23}\text{ atoms} \\ xmoles=15.055x10^{22}\text{ atoms} \\ xmoles.6.022x10^{23}atoms=1mole.15.055x10^{22}\text{ atoms} \\ \text{x moles = }\frac{1mole.15.055x10^{22}atoms}{6.022x10^{23}\text{ atoms}} \\ x\text{ = }0.25\text{ moles} \end{gathered}$

Therefore 15.055x10^22 atoms is equivalent to 0.25 moles.