If there is an extremely large number of particles within a small object, what does that mean about the size of the particles?

Ibelieve its because the stove is a cleaner burning fuel

Molarity is moles of solute over liters of solution. idk if that is what you are talking about, but you can convert moles of solute to grams of solute using dimensional analyzes by using molar mass found on the periodic table.

Ahigh energy (high speed) particle (alpha or beta or neutron) are shot at the target;