A gas sample is let out from a fixed location in a laboratory. A detector is positioned ten metres away from the release point. It measures and notes the time at which the gas concentration reaches ten molecules per million molecules of air. The investigation is done using two gases at different temperatures. In which experiment was the time shown by the detector the largest?
- Agas: $\text{SF}_6$, temperature of laboratory: $20\,^{\circ}\text{C}$
- Bgas: $\text{SF}_6$, temperature of laboratory: $40\,^{\circ}\text{C}$
- Cgas: $\text{CO}_2$, temperature of laboratory: $20\,^{\circ}\text{C}$
- Dgas: $\text{CO}_2$, temperature of laboratory: $40\,^{\circ}\text{C}$