CHEM PRACTICE EXAM 2 .docx - A 10.85 g sample of a fuel is...

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A 10.85 g sample of a fuel is combusted in excess oxygen. Upon completion of the reaction, 26.48 g of carbon dioxide and 10.84 g of water is recovered. A. What is the mass of carbon in the fuel? B. What is the mass of hydrogen in the fuel? C. Does the fuel contain oxygen? D. What is the empirical formula of the fuel? E. What mass (in g) of oxygen ( O 2 ) reacted?
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A. What is the balanced chemical equation for the reaction of liquid propanol ( CH 3 CH 2 CH 2 OH) in oxygen to produce carbon dioxide and liquid water (proper chemical formulas, complete balance, and states of mater)? B. Preform the following calculations given the combustion of solid naphthalene ( C 10 H 8 ) in oxygen to produce carbon dioxide and liquid water shown below: C 10 H 8 ( s ) + 12 O 2 ( g ) 4 H 2 O ( g ) + 10 CO 2 ( g ) a. What mass of naphthalene (MM=128.18 g×mol 1 ¿ will react in excess oxygen to produce 185.5 g carbon dioxide? Mass C 10 H 8 = ¿ g b. If 10.0 g of both naphthalene and oxygen are used, what is the limiting reactant?
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