5.97 g of copper and iron powders contain an equal number of atoms of each metal. How many cm3 of a 20.0% hydrochloric acid solution (ρ= 1.10 g/cm3) will react with the mixture of metals? Write the equations for all the reactions that occur?

Two moles of potassium chloride and three moles of oxygen are produced from the decomposition of two moles of potassium chlorate, kcos3(s). write the balanced equation. how many moles of oxygen are produced from 12 moles of potassium chlorate