A cylinder containing 15.0 L of helium gas at a pressure of 165 atm is to be used to fill party balloons. Each balloon must be filled to a volume of 2.0 L at a pressure of 1.1 atm. What is the maximum number of balloons that can be inflated? Assume that the gas in the cylinder is at the same temperature as the inflated balloons. (HINT: The “empty” cylinder will still contain helium at 1.1atm.)

A particular gas exerts a pressure of 2.61 bar.  What is this pressure in units of atmospheres?  (1 atm = 760 mm Hg = 101.3 kPa = 1.013 bar)

A sample of helium gas occupies a volume of 9.69 L at 49.0°C and 0.420 atm. If it is desired to increase the volume of the gas sample to 11.5 L, while decreasing its pressure to 0.316 atm, the temperature of the gas sample at the new volume and pressure must be °C.

A sample of helium gas at 283 K and 1.01 atm occupies a volume of 4.53 L. If the gas is compressed into a smaller volume, while at the same time it is heated to a higher temperature, the final gas pressure O could be higher or lower than 1.01 atm depending on the final volume and temperature. O will be lower than 1.01 atm. O will be higher than 1.01 atm.

A cylinder containing 15.0 L of helium gas at a pressure of 150. atm is to be used to fill party balloons. Each balloon must be filled to a volume of 2.8 L at a pressure of 1.1 atm. What is the maximum number of balloons that can be inflated? Assume that the gas in the cylinder is at the same temperature as the inflated balloons. (HINT: The "empty" cylinder will still contain helium at 1.1 atm.)

The temperature of a gas is 52•C. The gas expands from 835.2 mL to 1.148 L at a constant pressure of 746 torr. The final temperature of the gas is •C. Answer must be verified.

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 -69.0 °C to -38.0 °C, and at the same time the pressure is increased 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 % 0 x10 X

A gas sample containing 0.6838 moles is trapped in a chamber with a volume of 7.557 liters.  If the temperature of the chamber is 25.02 oC, what is the pressure of the gas in atm? (assuming ideal behavior)

References Use the References to access important values if needed for this question. The stopcock connecting a 1.00 L bulb containing xenon gas at a pressure of 454 mm Hg, and a 1.00 L bulb containing nitrogen gas at a pressure of 526 mm Hg, is opened and the gases are allowed to mix. Assuming that the temperature remains constant, what is the final pressure in the system? mm Hg

An ideal gas is placed into a sealed container with a fixed volume.  The initial temperature and pressure of the container are 29.6 °C and 1.14 atm respectively.  The container and gas are heated to 88.8 °C.  What is the resulting pressure (in atm)?