If the temperature of the gas is doubled and the volume is quadrupled, the pressure becomes half the initial pressure.

At constant temperature and pressure the volume of a gas is directly proportional to the number of moles of gas. At constant temperature and volume the pressure of a gas is directly proportional to the number of moles of gas.

Decreasing Pressure The combined gas law states that the pressure of a gas is inversely related to the volume and directly related to the temperature. If temperature is held constant, the equation is reduced to Boyle’s law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase.

this relationship between pressure and volume is called Boyle’s law. So, at constant temperature, the answer to your answer is: the volume decreases in the same ratio as the ratio of pressure increases.

When the pressure on the piston is doubled, it moves downward until the pressure exerted by the gas equals the pressure exerted by the piston. At this point the volume of the gas is halved. If the pressure on the piston is again doubled, the volume of gas decreases to one-fourth its original volume.

If you compress a gas adiabatically (without allowing heat to enter or leave) you are doing Work on the gas. That increases its internal energy. The temperature is a measure of the internal energy (kinetic energy of the molecules for an ideal gas). Thus, compression increases temperature.

The temperature of the gas is proportional to the average kinetic energy of its molecules. Faster moving particles will collide with the container walls more frequently and with greater force. This causes the force on the walls of the container to increase and so the pressure increases.

As temperature decreases, volume decreases—which it does in this example. If V1 = 623 mL, T1 = 255°C, and V2 = 277 mL, what is T2?

So, that means that volume is directly proportional to temperature. Even then, since we increase the temperature inside a material, the molecules’ kinetic energy increases and they start to vibrate more and move around further from each other, therefore accounting for an increase in volume.

That’s because the outside temperature has an impact on tire pressure. When the temperature is high, the air in your tires takes up more volume, whereas when the temperature is cold, the air takes up less volume. The inflation pressure in tires generally drops by 1 to 2 psi for every 10 degrees the temperature lowers.

Tire manufacturers suggest checking tires when they’re cold for the most accurate reading. Outside temperatures can cause tire pressure to vary by as much as 1 psi per 10 degrees; higher temperatures mean higher psi readings.

Higher pressure generally is not dangerous, as long as you stay well below the “maximum inflation pressure.” That number is listed on each sidewall, and is much higher than your “recommended tire pressure” of 33 psi, Gary. So, in your case, I’d recommend that you put 35 or 36 psi in the tires and just leave it there.

Yes, you typically need to inflate your tires in cold weather. As we’ll explain, low temperatures often mean low tire pressure, and low tire pressure could mean dangerous driving. Firestone Complete Auto Care is here to help you drive safer with a quick lesson on cold weather and tire pressure.