Let's Check Your Knowledge!
Directions: Encircle the letter that corresponds to the best answer.
1. Two bottles at the same temperature containing hydrogen sulphide (H2S) and ammonia
(NH3) are placed at equal lengths from you and are opened at the same time. Which gas would
you smell first?
A. Both
B. Hydrogen sulphide C. None
D. Ammonia
2. Which of the following gases diffuses the fastest? Oxygen (02), Hydrogen (H2), Sulphur
dioxide (SO2), or Carbon dioxide (CO2)?
A. Oxygen
B. Sulphur dioxide
C. Hydrogen
D. Carbon dioxide
3. Which of the following gases diffuses the slowest? Oxygen (02), Hydrogen (H2), Sulphur
dioxide (SO2), or Carbon dioxide (CO2)?
A. Oxygen
B. Sulphur dioxide
C. Hydrogen
D. Carbon dioxide
4. Which of the following gases diffuses the fastest? Helium (He), Ammonia (NH3), Hydrogen
sulphide (H2S), or Carbon dioxide (CO2)?
A. Helium
B. Hydrogen sulphide C. Ammonia
D. Carbon dioxide
5. Which of the following gases diffuses the slowest? Helium (He), Ammonia (NH3), Hydrogen
sulphide (H2S), or Carbon dioxide (CO2)?
A. Helium
B. Hydrogen sulphide C. Ammonia
D. Carbon dioxide
6. Which of the following gases diffuses the fastest? Helium (He), Hydrogen (H2), Sulphur
dioxide (SO2), or Carbon dioxide (CO2)?
A. Helium
B. Sulphur dioxide
C. Hydrogen
D. Carbon dioxide
7. How much faster does helium gas diffuse than sulphur dioxide?
A. 2x
B. 0.5%
C. 4x
D. 0.25x
8. How much faster does hydrogen gas diffuse than sulphur dioxide?
A. 5.65x
B. 0.18x
C. 4x
D. 0.25x 10
9. How will a gas velocity vary if its molecular weight was decreased from 144 g/mol to 64
g/mol
A. It will be faster by 200%
C. It will be halved.
B. It will remain the same.
D. It will be faster by 150%
10. How will a gas velocity vary if its molecular weight was increased from 32 g/mol to 128
g/mol?
A. It will be faster by 200%
C. It will be halved.
B. It will remain the same.
D. It will be faster by 150%


Pa answer po ng maayos..
thank you​