Trick Question: When can we see an invisible hazardous gas?

We can see some hazardous gases, even at low concentrations, such as Chlorine (Cl2). But some hazardous gases are “clear/invisible”. So, using Anhydrous Ammonia (NH3) as our hazardous gas… What does 300 ppm of Anhydrous Ammonia (NH3) look like? Note: 300 ppm is the IDLH for NH3 For example, there’s a release of NH3. You...