CHEM 121 Study Guide - Midterm Guide: Dumas Method, Chemical Structure, Partial Pressure

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24 Oct 2018
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CHEM 121 Full Course Notes
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CHEM 121 Full Course Notes
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Name: _____________________: the dumas method is a technique that can be used to determine percent composition of carbon, nitrogen, hydrogen and oxygen in a sample. In essence a compound is reacted with oxygen in the presence of copper dioxide at high temperatures. This procedure generates a series of simple gasses that can be analyzed. Indicate the mole fraction and partial pressure of each gas. The unbalanced equation describing this reaction is presented below? (note: r = 0. 08206 l atm k-1 mol-1) Midterm 2: draw lewis structures for the most probable structures of each of the following species. Indicate the formal charges on each of the atoms. Also indicate the orbital hybridisation on the bolded atoms indicated. Is there a resonance hybrid ? (a) tef4 (b) no3. 3a) list the following molecules in order of increasing bond angle and justify your answer. 3b) name the molecules listed in question 3a. 3c) a newly discovered anti-asthma drug is shown below.