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Unformatted text preview: Determine the identity of the alkaline earth metal. Prove your answer by calculations. Write the equation of the chemical reaction. 4 . A 2.05-g sample of iron-aluminum alloy is dissolved in excess HCl(aq) to produce 0.105 g of H 2 (g). What is the percent composition, by mass, of the alloy? Fe(s) + 2HCl(aq) FeCl 2 (aq) + H 2 (g), 2Al + 6HCl(aq) 2AlCl 3 (aq) + 3H 2 (g) 5 . The insecticide dieldrine contains carbon, hydrogen, oxygen and chlorine. Upon complete combustion, a 1.510-g sample yields 2.094 g CO 2 and 0.286 g H 2 O. The compound has a molecular mass of 381 amu and has as many chlorine atoms as carbon atoms. What is the molecular formula of dieldrine?...
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This note was uploaded on 06/13/2008 for the course CHEM 1 taught by Professor Kryatov during the Spring '08 term at Tufts.
- Spring '08