{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

chem 1007 practice problems postprelim2-1

chem 1007 practice problems postprelim2-1 - CHEM 1007...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEM 1007: Optional practice problems for material after prelim 2 Gases 1. Consider a 1.0 L sample of helium gas and a 1.0 L sample of argon gas, both at room temperature and atmospheric pressure. (a) Do atoms in the helium sample have the same average kinetic energy as the atoms in the argon sample? (b) Do the atoms in the helium sample have the same average velocity as the atoms in the argon sample? (c) Do the argon atoms, exert a greater pressure on the walls of the container? (d) Which gas sample would have the fastest rate of effusion? 2. The mass of an evacuated 255 mL flask is 143.187 g. The mass of the flask filled with 267 Torr of an unknown gas at 25 ° C is 143.289 g. Calculate the molar mass of the unknown gas. 3. A mixture of CO(g) and O 2 (g) in a 1.0 L container at 1000K has a total pressure of 2.2 atm. After some time the total pressure falls to 1.9 atm as the result of the formation of CO 2 (g). Find the amount of CO 2 (g) that forms. 4. A steel container of volume 0.35 L can withstand pressures up to 88 atm before exploding. Find the maximum mass of helium that can be stored in this container at 299K. 5. A mixture of CH 4 (g) and C 2 H 6 (g) has a total pressure of 0.53 atm. Just enough O 2 (g) is added to
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}