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Unformatted text preview: 4. The decomposition of potassium chlorate generates 128 mL of oxygen gas at 24.0 C and 762 mm Hg. Calculate the grams of oxygen obtained. The vapor pressure of water vapor at 24.0 C is 22.4 mm Hg. 5. Calculate the root mean square speed (m/s) of helium atoms at 25.0 C. 6. A flammable gas made up of only carbon and hydrogen is found to effuse through a porous barrier at 1.50 min. Under the same conditions, it takes an equal volume of bromine vapor 4.73 min to effuse through the same barrier. Calculate the molar mass of the unknown gas. 7. Given that 3.50 moles of ammonia occupy 5.20 L at 47.0 C, calculate the pressure of a gas (atm) using (a) the ideal gas equation and (b) the van der Waals equation....
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This note was uploaded on 04/29/2008 for the course CHEM 122 taught by Professor Zellmer during the Winter '07 term at Ohio State.
- Winter '07