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exp10_ld

# exp10_ld - Answer 2 What is the pressure exerted by 1.8 mol...

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Name Your name Lab Day and Time Day & Time TA TA's name Room Room C HEMISTRY 21L L EARNING D EVICE EXPT. Experimenting with Gas Laws 10 10 For calculations, you must show all of your work and include appropriate units to receive full credit. Answers to the discussion questions should be in the form of complete sentences. 1. a) What is an ideal gas? Write the ideal gas equation and define each term in the equation with appropriate units when R = 0.08206 L-atm/mol-K. (3 pts) Answer b) With respect to the ideal gas equation, which term is the independent variable in Part F of this experiment? Which term is the dependent variable? Which variables are held constant? (2 pts) Answer c) In Part G of this experiment, which variable is the independent variable? Which is the dependent variable? Which variables are held constant? (2 pts)
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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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