CHM 2046 PRACTICE EXAM I

# CHM 2046 PRACTICE EXAM I - CHM 2046 PRACTICE EXAM I 1 A...

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CHM 2046 PRACTICE EXAM I 1. A tightly sealed 5.0-L flask contains 781 mm Hg of Ar at 19 ° C. The flask is heated until the pressure is doubled. What is the temperature of the gas? a. -127 ° C b. 38 ° C c. 95 ° C d. 149 ° C e. 311 ° C E 2. A 0.225-L flask contains CH 4 at 27 ° C and 318 mm Hg. What is the pressure of the CH 4 if the volume is increased to 0.500 L and the temperature increased to 95 ° C? a. 117 mm Hg b. 176 mm Hg c. 503 mm Hg d. 508 mm Hg e. 867 mm Hg B 3. What volume of CO 2 at 15 ° C and 1.50 atm contains the same number of molecules as 0.410 L of O 2 at 35 ° C and 3.00 atm? a. 0.192 L b. 0.219 L c. 0.767 L d. 0.820 L e. 1.14 L C 4. A 50.0 L cylinder of Ar has a pressure of 137 atm at 25 ° C. What mass of Ar is inside the cylinder? ( R = 0.08206 L·atm/mol·K) a. 0.143 g b. 4.48 g c. 918 g d. 2.80 × 10 2 g e. 1.12 × 10 4 g E 5. Calculate the density (in g/L) of Kr at 308 K and 527 mm Hg. ( R = 0.08206 L·atm/mol·K) a. 2.30 g/L b. 4.78 g/L c. 31.1 g/L d. 1.75 × 10 3 g/L e. 2.36 × 10 4 g/L A

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6. 45.0 g of ice at -12.0
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## This note was uploaded on 04/07/2008 for the course CHM chm1046 taught by Professor Dillon during the Spring '08 term at FSU.

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CHM 2046 PRACTICE EXAM I - CHM 2046 PRACTICE EXAM I 1 A...

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