THIS IS MULTIPLE CHOICE
Q1. A sample of carbon dioxide has a volume of 12.4 L at 650 torr. If the temperature is held constant, what volume does it have at 3.2 atm?
4.5 L 3.3 L 26 L 46 L 0.30 L
Q2. A 3.00 L sample of argon has a pressure of 345 kPa at 55.0°C. What volume would the sample have if the pressure is 0.839 atm and the temperature exactly 0°C?
22.4 L
10.1 L
1030 L
60.4 L
0.615 L
Q3. A 5.00 L sample of xenon gas has a pressure of 155 torr at -90oC. What mass of Xe is present?
0.088 g 8.92 g 4.53 g 6.78E3g 18.1 g
Q4. Ammonia burns in air as follows:
4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(g)
How many liters of nitrogen are formed by burning 2.50 L of ammonia in excess oxygen with all species at the same temperature and pressure?
2.00 L 2.50 L 1.25 L 5.00 L 0.625 L
Q5. Hydrochloric acid is prepared by bubbling hydrogen chloride gas through water. What is the concentration of a solution prepared by dissolving 225 L of HCl(g) at 37°C and 672 torr in 5.25 L of water?
1.49 M 1.66 M 7.82 M 12.5 M 16.6 M
Q6. Which of the following gases will be the fastest to diffuse through a room?
sulfur dioxide hydrogen sulfide carbon dioxide water neon
Q7. A sealed container contains 2.0 g of hydrogen and 56 g of nitrogen gas. If the total pressure in the container is 1.5 atm, what is pressure exerted by each gas?
H2 = 1.0 atm and N2 = 0.50 atm
H2 = 0.50 atm and N2 = 1.0 atm
H2 = 1.0 atm and N2 = 2.0 atm
H2 = 2.0 atm and N2 = 1.0 atm
There is not enough information given to answer the question.
Q8. The interhalogen compound chlorine trifluoride can be prepared by direct combination of the elements:
Cl2(g) + 3F2(g) → 2ClF3(g)
If 2.00 L of chlorine at 1.20 atm are mixed with 2.00 L of fluorine at 3.10 atm in a 5.00 L flask at 240oC, what is the partial pressure of the reactant remaining, assuming 100% yield?
0.253 atm F2
0.067 atm Cl2
0.827 atm Cl2
0.758 atm F2
0.0333 atm Cl2
Q9. Which of the following gases has the greatest average kinetic energy at 350 K?
Xe Ne Ar CH4 all have the same average kinetic energy
Q10. At 25oC, which of the following gases has the largest average velocity?
He Ne O2 N2 Cl2 All have the same average velocity
Q11. The time requried for 0.010 moles of SO3(g) to effuse through an opening was 22 s. Under the same conditinos, an unknown gas required 28 s. The unknown gas is
Xe UF6 SiF4 CF4 SF6
Q12. The density of the vapor of a volatile organic compound is 0.371 g/L at 18.5 kPa and 300.oC. What is the molar mass of the gas?
694 g/mol 135 g/mol 943 g/mol 95.5 g/mol 50.0 g/mol
2006-10-11
22:51:35
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17 answers
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asked by
ibrakeforchucknorris
1
in
Chemistry