A chemist has the following reaction

6ClO2 +3H2O -> 5HClO3 + HCl
If a chemist wants 30.0 moles of HClO3, what is the minimum number of moles of ClO2 that she can use

every 5 moles of HClO3 uses 6 moles of ClO2

6 / 5 = x / 30