A fixed amount of gas at 25.0 °C occupies a volume of 9.23 L when the pressure is 629 torr. Use Charles's law to calculate the volume (L) the gas will occupy when the temperature is increased to 135 °C, while maintaining the pressure at 629 torr.

For many purposes we can treat methane (CH4) as an ideal gas at temperatures above its boiling point of -161. °C. Suppose the temperature of a sample of methane gas is raised from 99.0 °C to 118.0 °C, and at the same time the pressure is decreased by 5.0%. Does the volume of the sample increase, decrease, or stay the same? If you said the volume increases or decreases, calculate the percentage change in the volume. Round your answer to the nearest percent. O increase O decrease O stays the same % ☐ x10 X

The mole fraction of hydrogen gas in a mixture of gases is 0.17. The total pressure of the gas mixture is 2.8 atm. What is the partial pressure of the hydrogen gas?

A sample of neon gas occupies a volume of 8.35 L at 44.0°C and 0.960 atm. If it is desired to increase the volume of the gas sample to 11.2 L, while decreasing its pressure to 0.767 atm, the temperature of the gas sample at the new volume and pressure must be