An Avogadro's law illustration explains that equal volumes of gases at the same temperature and pressure contain an equal number of molecules. A simple example is inflating a balloon—adding more gas increases its volume while maintaining constant temperature and pressure. Another Avogadro's law illustration is comparing two balloons, one with helium and another with oxygen; if both have the same volume under identical conditions, they contain the same number of gas molecules, demonstrating Avogadro's principle. For more information Visit: https://www.88tuition.com/libr....ary/avogadro%E2%80%9