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Unformatted text preview: Answer 2. What is the pressure exerted by 1.8 mol O 2 in a 8.0 L flask at 32 o C? (4 pts) Answer 3. The mathematical expression for a linear relationship is y = mx +b . Define each variable. (2 pts) Answer 4. A table that describes the composition of dry air is given below. The density of dry air is 0.001185 g/mL at 25 o C and 1.0 atm. Composition of Dry Atmospheric Air Constituent Molar Mass (g/mol) Percent Composition N 2 28.01 78.08 O 2 32.00 20.95 CO 2 44.01 0.033 Ar 39.95 0.934 a) Using the information given above, determine the molar mass of air. (3 pts) Answer b) Using the molar mass that was calculated in part a), determine the moles of air in a 250-mL Erlenmeyer flask. (4 pts) Answer...
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This note was uploaded on 06/10/2010 for the course CHEM 102L taught by Professor N/a during the Spring '07 term at UNC.
- Spring '07