The following diagram represents the reaction of (red spheres) with (blue spheres):

How many moles of product can be made from 1.0 mol of A2? From 1.0 mol of B2?

The reaction of potassium chlorate and sucrose is given below: 

If 2.33 x 10^-7 formula units of potassium chlorate are reacted, how many grams of carbon dioxide will be produced? 

If the density of ethanol, CH₃CH₂OH, is 0.789 g/mL, how many milliliters of ethanol are needed to produce 4.8 g of H₂O in the following reaction?