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Unformatted text preview: CHAPTER 3 REVIEW 2300 1. Terephthalic acid, used in the production of polyester fibers and films, is composed of carbon, hydrogen, and oxygen. When 0.6943 g of terephthalic acid was subjected to combustion analysis it produced 1.471 g CO 2 and 0.226 g H 2 O. What is its empirical formula? A. C 2 H 3 O 4 B. C 3 H 4 O 2 C. C 4 H 3 O 2 D. C 5 H 12 O 4 E. C 2 H 2 O 2. In the combustion analysis of 0.1127 g of glucose (C 6 H 12 O 6 ), what mass, in grams, of CO 2 would be produced? A. 0.0451 g B. 0.0825 g C. 0.1652 g D. 0.4132 g E. 1.466 g 3. In a blast furnace, elemental iron is produced from a mixture of coke (C), iron ore (Fe 3 O 4 ) and other reactants. An important reaction sequence is 2C( s ) + O 2 ( g ) → 2CO( g ) Fe 3 O 4 ( s ) + 4CO( g ) → 3Fe( l ) + 4CO 2 ( g ) How many moles of iron can be formed in this sequence when 1.00 mol of carbon, as coke, is consumed? A. 6.00 mol Fe B. 3.00 mol Fe C. 1.33 mol Fe D. 1.25 mol Fe E. 0.750 mol Fe 4. Magnesium (used in the manufacture of light alloys) reacts with iron(III) chloride to form magnesium...
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This homework help was uploaded on 04/20/2008 for the course CHEM 1300/ taught by Professor Ballester during the Fall '08 term at Nova Southeastern University.
- Fall '08