Chlorine dioxide is used as a disinfectant and bleaching agent. In water, it reacts to form chloric acid (HClO3), according to the following balanced equation:
6 ClO2 + 3 H2O → 5 HClO3 + HCl
If excess ClO2 is mixed with 18.0 mL of H2O (d = ) how many grams of HClO3 are formed?
PLEASE DO NOT JUST GIVE THE ANSWER!!! I really would like to learn HOW to do this so please give explanations for each step as you solve it. Thanks!

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.