- 1. What is the charge of lithium and oxygen in the compound Li2O?
A) Li=+1 O=-1
B) Li=+1 O=-2
C) Li=+2 O=-2
D) Li=+2 O=-1
- 2. What is the formula mass for MgSO4?
A) 76 amu
B) 120 amu
C) 76 g/mol
D) 120 g/mol
- 3. What is the percent composition of HYDROGEN in H2O?
A) 20%
B) 11%
C) 89%
D) 2%
- 4. What is the percent composition of SODIUM in NaCl?
A) 60%
B) 1%
C) 23%
D) 40%
- 5. What is the molar mass of KCl?
A) 74 amu
B) 36 g/mol
C) 36 amu
D) 74 g/mol
- 6. What type of reaction is 2Na +Cl2-->2NaCl?
A) decomposition
B) double-displacement
C) combustion
D) single-displacement
E) synthesis
- 7. What type of reaction is 2H2O-->2H2 +O2?
A) synthesis
B) decompostion
C) single-displacement
D) combustion
E) double-displacement
- 8. What type of reaction is 1 C3H8 + 5O2 -->3 CO2 + 4 H2O
A) synthesis
B) single-displacement
C) decompostion
D) double-displacement
E) combustion
- 9. 2 LiCl + 1 Na2SO4 -->1 Li2SO4 + 2NaCl
A) decomposition
B) combustion
C) double-displacement
D) synthesis
E) single-displacement
- 10. 3 Be + 1 Ni2S3 --> 2 Ni + 3 BeS
A) combustion
B) single-displacement
C) synthesis
D) double-displacement
E) decomposition
- 11. Which of the following is a unit for pressure?
A) K
B) oC
C) L
D) atm
- 12. Which of the following is a unit for temperature?
A) L
B) torr
C) K
D) atm
- 13. Which of the following is a unit for volume?
A) L
B) K
C) torr
D) atm
- 14. 760 torr =_________mmHg
A) none of these
B) 1
C) 101.325
D) 760
A) 0.035kPa
B) 354.6 kPa
C) 2660kPa
D) 0.0046kPa
A) 0.29torr
B) 3039.8torr
C) 0.039torr
D) 22,800torr
- 17. A volume of gas at 4.35atm was measured at 540cm3. Using Boyle's Law, determine what will be the volume if the pressure is adjusted to 5.95atm?
A) 395cm3
B) 0.001cm3
C) 0.047cm3
D) 13976cm3
- 18. Using Gay-Lussac's Law, determine the final pressure if a gas is cooled to 303K and the volume is kept constant. The original temperature was 373K and original pressure was 870mm Hg?
A) 1200mmHg
B) 1071mmHg
C) 805mmHg
D) 706mmHg
- 19. A gas sample occupies 3.3 L at 300.5K 2,000mm Hg. Using the combined gas law, determine the temperature at which the gas will occupy 4.0L at 4,700mm Hg.
A) 855K
B) 303K
C) 105.3K
D) 581K
- 20. The gas in a balloon occupies 2.45L at 295K. Using Charles's Law, determine what temperature will the balloon expand to 3.5L?
A) 206K
B) 421K
C) 500K
D) 352K
- 21. Using the Ideal Gas Law, if I have a 87 L container that holds 54 mole of a gas at a temperature of 373 K, what is the pressure inside the container?
A) 49atm
B) 32atm
C) 15atm
D) 18.9atm
- 22. How do you convert Celcius to Kelvin?
A) Multiply by 273
B) Subtract 273
C) Add 273
D) Divide by 273
- 23. What is standard pressure?
A) 760 torr
B) 1atm
C) 101.325kPa
D) All of these
- 24. What is standard temperature?
A) L
B) oC
C) Two of the above
D) K
- 25. What does "n" stand for in the Ideal Gas Law?
A) moles
B) volume
C) pressure
D) number
- 26. What is the rate constant or "R" in the Ideal Gas Law?
A) It depends on volume
B) It depends on pressure
C) 0.08206
D) It depends on temperature
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