Chemistry - Stoichiometry - Avogadro's number - Avogadro's Number Calculator
An interactive converter with three connected displays: MASS (grams), MOLES, and NUMBER OF PARTICLES. The child adjusts any one value and the other two update automatically. Substance selector: H₂O (molar mass 18), CO₂ (44), NaCl (58.5), C₆H₁₂O₆ (180), Fe (56), O₂ (32). Examples to explore: Set mole