Pascal Gas Stoichiometry

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

Which of the following gases diffuses the fastest? Oxygen (O2), Hydrogen (H2), Sulphur dioxide (SO2), or Carbon dioxide (CO2)?

• A. Oxygen

• B. Sulphur dioxide

• C. Hydrogen

• D. Carbon dioxide

Which of the following gases diffuses the slowest? Oxygen (O2), Hydrogen (H2), Sulphur dioxide (SO2), or Carbon dioxide (CO2)?

• A. Oxygen

• B. Sulphur dioxide

• C. Hydrogen

• D. Carbon dioxide

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

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

How much faster does helium gas diffuse than sulphur dioxide?

• A. 2x

• B. 0.5x

• C. 4x

• D. 0.25x

How much faster does hydrogen gas diffuse than sulphur dioxide?

• A. 5.65x

• B. 0.18x

• C. 4x

• D. 0.25x

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%

• B. It will remain the same.

• C. It will be halved.

• D. It will be faster by 150%

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%

• B. It will remain the same.

• C. It will be halved.

• D. It will be faster by 150%