SCUBA project. HELP? "the bends" "oxygen toxicity" "air embolisms"?

Question

which gas law does each of these conditions respond to?

as in

boyles law goes with "the bends"

and seriously, i could just use answers,

not those snide little

"why don't you go to google."

PLEASE help me

i'm way in over my head.

Answer 1

The bends and an embolism are caused by a decrease in ambient pressure, causing nitrogen dissolved in the blood and soft tissue, to form bubbles. The bends are many tiny bubbles. An embolism is a killer bubble that blocks the circulatory system. Both come under Boyle's Law.

Oxygen toxicity is more of a biological event, than a gas one but still has it's source in a gas law and comes under Dalton's Law of partial pressures. In simple terms, it's oxygen poisoning. The higher oxygen content of a divers breathing gas, the shallower he's allowed to dive, but the longer he can stay there without decompression obligations since the concentration of nitrogen in the breathing mix is less ( takes longer for dissolved nitrogen to be an issue), compared to using normal air at 21% O2 the rest being primarily nitrogen with only trace elements of other gases. It's the partial pressure of that O2 in the tank that is the factor here. If a diver exceeds the allowable ppO2 ( partial pressure of Oxygen) limit he can sustain a O2 tox issue. An O2 tox hit can come in two forms. A CNS ( central nervous system) hit, which essentially is your body's electrical system frying or a Pulmonary hit which is less serious and usually only involves lung tissue damage. A CNS hit is usually fatal and death normally by drowning since the diver has lost motor control and can't put the reg back in his mouth after spitting it out when symptoms first start. The diver is convulsing too much and can't control what his body is doing. Lousy way to go.