Convert 1.67 x10^24 atoms of carbon to moles of carbon

1) Set up your equation. Multiply 1.67 * 10^24 atoms by 1 mol of carbon, and divide by 6.022*10^23 atoms of carbon (Avogadro's number). The atoms cancel out and will give you the answer in mols of carbon (Remember, 1 mol = 6.022*10^23 atoms).

1.67*10^24 atoms of carbon * 1 mol of carbon

6.022*10^23 atoms of carbon

= 0.277317 mol of carbon - > round to 3 sig figs!

Answer = 0.277 mol of carbon