PS07.MoreMoles

Basic Chemistry (Chapters 1-16)

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CHEMISTRY 2001 NAME DATE PERIOD DIRECTIONS: READ SECTIONS 6.8 AND 6.9 BEFORE ATTEMPTING THESE PROBLEMS! For each problem that requires a calculation, show the set-up , unit cancellations , and the answer . USE CORRECT # OF SIG-FIG’S! 1. Find each of the following quantities (for help, see Section 6.8): a. the mass, in grams, of a mole of aspirin, C 9 H 8 O 4 b. the volume, in liters, of 835 g of sulfur trioxide. (Hint: Use the “Mole Road.” Find the number of moles first!)
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Unformatted text preview: c. the mass, in grams, of 18.0 liters of methane, CH 4 , at standard temperature and pressure (STP) 2. For each of the following compounds, calculate the percent composition of each element (for help, see Section 6.9): a. hydrogen sulfide, H 2 S b. magnesium hydroxide, Mg(OH) 2 c. ammonium oxalate, (NH 4 ) 2 C 2 O 4...
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This document was uploaded on 06/02/2010.

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