Unformatted text preview: Chem 1420 —Aut. 92.: 2006 —Final Exam P232 5 9. (10) Balance the following rcdox reaction in basic solution: HPbOﬂaq) + Re(s) —> Pb(s) + Reo; (aq) 10. (10) Calculate the empirical and molecular formulas of the unknown compound with a molar mass of approximately 90 g/mol that contains carbon, hydrogen and oxygen if the combustion of 150.0 g of the compound with an excess of oxygen
yielded 220.0 g of C02 and 90.00 g of water. ...
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- Spring '07