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Charle’s Law describes that temperature and volume are directly proportional to each other. When a gas is heated, it expands. As the expansion of the gas takes place, it becomes less dense and the balloon is lifted in the air. The warm is less dense than the cold air, which means that it is lighter than the cold air.
Early scientists explored the relationships among the pressure of a gas (P) and its temperature (T), volume (V), and amount (n) by holding two of the four variables constant (amount and temperature, for example), varying a third (such as pressure), and measuring the effect of the change on the fourth (in this case, volume).
When temperature is constant, pressure is inversely proportional to volume. When pressure is constant, volume is directly proportional to temperature. This last point describes thermal expansion —the change in size or volume of a given mass with temperature.
24 Απρ 2018 · The relationship between pressure and temperature of a gas is stated by Gay-Lussac’s pressure temperature law. This law states that the pressure (P) of a fixed mass of gas held at a constant volume is directionally proportional to its Kelvin temperature (T).
28 Μαΐ 2020 · Define the property of temperature and pressure; Define and convert among the units of temperature and pressure; Describe the operation of common tools for measuring gas pressure
We find that temperature and pressure are linearly related, and if the temperature is on the kelvin scale, then P and T are directly proportional (again, when volume and moles of gas are held constant); if the temperature on the kelvin scale increases by a certain factor, the gas pressure increases by the same factor.
The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles’s law). The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle’s law).
