Chem 110 Exam 1 (2002) - PENN STATE ALTOONA CAMPUS Chem....

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PENN STATE ALTOONA CAMPUS Chem. 12: Chemical Principles Dr. Carey S. Reed Fall 2002 Exam 1.1 Fri., Sept. 27, 2002 1.) (5) Do the indicated arithmetic and give the answer in scientific notation with the correct number of significant figures. 863 x [1255 – (3.45 x 108)] = 2.) (5) The melting point of sodium chloride (table salt) is 804 ° C. What is the melting point in K and in ° F? 4.) (5) A piece of aluminum foil measuring 12.0 in by 15.5 in. has a mass of 5.175g. Aluminum has a density of 2.70 g/cm 3 . What is the thickness of the foil in millimeters? 5.) (5) A colorless liquid, used as a solvent, is believed to be one of the following: Substance Density (in g/mL) n-butyl alcohol 0.810 ethylene glycol 1.114 isopropyl alcohol 0.785 toluene 0.866 To identify the substance, a chemist determined its density. By pouring a sample of the liquid into a graduated cylinder, she found that the volume was 35.1 mL. She also found that the sample weighed 30.5 g.
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This test prep was uploaded on 03/30/2008 for the course CHEM 110 taught by Professor Hofmann,brucerob during the Spring '08 term at Pennsylvania State University, University Park.

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Chem 110 Exam 1 (2002) - PENN STATE ALTOONA CAMPUS Chem....

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