@@ -0,0 +1,364 @@
+public class Reactants%0A%7B%0A    public Reactants (Chemical chem, Integer quantity)%0A    %7B%0A        _chemical = chem;%0A        _amount = quantity;%0A    %7D%0A%0A    public final Chemical getChemical ()%0A    %7B%0A        return _chemical;%0A    %7D%0A%0A    public final Integer getAmount ()%0A    %7B%0A        return _amount;%0A    %7D%0A%0A    private Chemical _chemical;%0A    private Integer _amount;%0A%7D

Create Reactants.java