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Chapter 11: Problem 51
What must the Celsius temperature be if \(2.0\) moles of a gas in a 4.0-L steel container has a measured pressure of \(100 \mathrm{~atm} ?\)
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Of the values for \(P, V, n\), and \(T\), which ones remain constant during the following changes? (a) Air in a sealed glass bulb is heated from \(25^{\circ} \mathrm{C}\) to \(32^{\circ} \mathrm{C}\). (b) An He-filled balloon is cooled from \(23^{\circ} \mathrm{C}\) to \(10^{\circ} \mathrm{C} .\) (c) The amount of \(\mathrm{CO}_{2}\) in a sealed steel cylinder is increased by adding \(50.0 \mathrm{~g}\) of \(\mathrm{CO}_{2}\).
When a balloon is placed in a freezer, the size of the balloon decreases. Explain why.
Are gases denser or less dense than liquids and solids? Explain.
What happens to the volume of a gas in a cylinder with a movable piston if: (a) The pressure is doubled while the temperature is held constant? (b) The temperature is doubled while the pressure is held constant? (c) The pressure and the temperature are both doubled? (The movable piston means the volume of the cylinder, and therefore of the gas, can change.)
Consider a container of gas with the pressure inside the container the same as the room pressure outside the container. If a tiny hole is punched in the side of the container, will the gas leak out? Explain your answer.
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