What gas laws apply to flamethrowers and grenades?

Flamethrowers and grenades primarily illustrate the principles of Boyle's Law and Charles's Law. Boyle's Law describes how the pressure of gas increases as its volume decreases, which is relevant in grenades as the explosive materials rapidly expand when ignited. Charles's Law highlights the relationship between temperature and volume; in flamethrowers, as the gas is heated, it expands and is expelled forcefully, creating a flame. Both laws underscore the behavior of gases under varying pressure and temperature conditions in these devices.