The first one that comes to mind is hydrochloric acid, which is essential to digestion.
1. A cave is non ventilated volume and the concentration of radon is greater than outdoor. 2. Determination of radon concentration (in Bq/m3 or in pCi/L). The maximum concentration should be under 150-250 Bq/m3.
That's all down to the concentration. At low concentration, there's no effect at all. At a high concentration, a few minutes.
I think it is dangerous in both the cases as each has its own complications.
A whirlpoolRapids in a riverA volcanoA rocky beach in a stormAn exposed hill during a thunderstorm
Corrosion of metals arising as a result of the formation of an oxygen concentration cell due to the uneven supply of air on the metal surface is known as differential aeration corrosion.Differential aeration corrosion occurs when a metal surface is exposed to differential air concentrations or oxygen concentrations. The part of the metal exposed to higher oxygen concentration acts as cathodic region and part of the metal exposed lower oxygen concentration acts as anodic region. Consequently, poorly oxygenated region undergoes corrosion.
The first one that comes to mind is hydrochloric acid, which is essential to digestion.
TFA is pretty nasty, so I'll go with that.
That depends on what type of insulation you're talking about. Exposed foam insulation generally isn't dangerous. Exposed asbestos insulation might be.
1. A cave is non ventilated volume and the concentration of radon is greater than outdoor. 2. Determination of radon concentration (in Bq/m3 or in pCi/L). The maximum concentration should be under 150-250 Bq/m3.
Phosphorus has a faint glow when exposed to oxygen.
Exposed to hazard; dangerous; risky.
The concentration of vitamin C in the solution decreases.
At risk; exposed; unsafe; unprotected; unguarded; vulnerable; insecure; harmful; dangerous.
That's all down to the concentration. At low concentration, there's no effect at all. At a high concentration, a few minutes.
iieye reeaally oont knooo....
Sure: Carbon monoxide is dangerous!
NO it is dangerous.