Frank ICSE Solutions for Class 10 Chemistry - Mole Concept And Stoichiometry PAGE NO : 103 Solution 1:Gay-Lussac's law: It states that 'when gases react, they do so in volumes which bear a simple ratio to one another, and also to the volume of the gaseous product, provided all the volumes are measured at the same temperature and pressure'. Avogadro's law : It … [Read more...] about Frank ICSE Solutions for Class 10 Chemistry – Mole Concept And Stoichiometry