Practice Problems - 15.3% oxygen? (5.) Determine the...

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Practice Problems Show your work to receive credit .!! Include the correct units .!! (1.) Calculate the number of moles in 45.2g of K 2 SO 4 . (2.) Calculate the number of molecules in 85.7g of N 2 H 4 . (3.) Determine the percent by mass of carbon in C 14 H 10 . (4.) What is the empirical formula of a compound that is 77.3% Silver, 7.4% phosphorous, and
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Unformatted text preview: 15.3% oxygen? (5.) Determine the molecular formula for a compound with an empirical formula of C 2 H 4 S and a molar mass of 179g. (6.) _____ N 2 + _____ H 2 _____ NH 3 . How many moles of hydrogen are needed to completely react with two moles of nitrogen?...
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This note was uploaded on 02/14/2012 for the course CH 101 taught by Professor Sutcliffe during the Fall '08 term at University of Texas at Austin.

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