CH-623
Diffusion
Chemistry · Secondary 3 · Medium · Diffusion
A student diffuses two gases through the same porous pot at room temperature: helium (He, Mr = 4) and oxygen (O₂, Mr = 32).
Which statement about their rates of diffusion is correct?
Which statement about their rates of diffusion is correct?
- Helium diffuses slower than oxygen because it is lighter.
- Helium diffuses faster than oxygen because it is lighter.
- Oxygen diffuses faster than helium because it is denser.
- Both gases diffuse at the same rate because they are at the same temperature.
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