P-V=nRT (Ideal Gas Equation)

The ideal gas law, expressed as P-V=nRT, describes how gases behave. It states that the pressure (P), volume (V), and temperature (T) of a gas are related when considering a fixed amount of gas (n). Essentially, increasing temperature or the amount of gas (n) tends to increase pressure or volume, while increasing pressure can decrease volume if temperature stays the same. R is a constant, tying all these variables together. This equation helps us predict how gases will respond under different conditions, like in engines, weather, or containers.