The initial temperature of a 1.00 L sample of argon is 20°C. The pressure is decreased from 720 mm Hg to 360 mm Hg and the volume increases to 2.14 liters.What was the change in temperature of the argon in Celcius?

Suppose a 22.5°C car tire contains 3.85 mol of gas in a 32.5 L volume. What is the gauge pressure, in atmospheres, in the car tire? Pg1 = What will the gauge pressure be if you add a quantity of gas that had a volume of 2.00 L when it was at atmospheric pressure and the same temperature as the tire? Pg.2

0.52 mol of argon gas is admitted to an evacuated 3.00 liter (3.00 × 10-3 m3) container at 20.0°C. The gas then undergoes an isobaric process to a temperature of 260°C. What is the final volume of the gas, in liters? Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

Yusheng and Dominic determine the root-mean-square speed (thermal speed) of the molecules of a gas to be 200 m/s at a temperature 23.0°C. What is the mass of the individual molecules? The Boltzmann constant is 1.38 x 10-23 J/K. 2.45 x 10-25 kg 5.66 x 10-25 kg 3.11 x 10-25 kg 2.13 x 10-25 kg