1 / 2

Challenge Question: What is the minimum size of the chamber? Note: we know its 4ft high

Challenge Question: What is the minimum size of the chamber? Note: we know its 4ft high. *0.20=89.8mol O 2.

hanne
Télécharger la présentation

Challenge Question: What is the minimum size of the chamber? Note: we know its 4ft high

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Challenge Question: What is the minimum size of the chamber?Note: we know its 4ft high *0.20=89.8mol O2 Given that the average human needs about 11,000 liters of air per day, and air is approximately 20% oxygen determine the minimum amount of moles of oxygen that must have been present in the bubble. At 30 meters (depth of the boat sinking) the pressure is 4 atm, assume the water was 60 F (15.5 C). Determine the volume that the amount of air you calculated above would take. Given that height is 4ft or 1.2 meters and assuming a square area:

  2. What assumptions did we make? Are these valid? So what is the verdict when all these are factored in? A space of about 25-177 meters required. • Carbon dioxide toxicity doesn’t exist. • Not valid: this should have killed him, why didn’t it? • All oxygen could be used, aka minimum concentration for absorption not required. • Not valid: you would need to keep a minimum amount of oxygen in the air or else your lungs would not be able to absorb the oxygen • No gas exchange with the water • This is what helped save him. The water acted like a carbon dioxide sink. Its also possible small amounts of O2 came out of the water into the air pocket. • No metabolism change • The cold water could have certainly changed his metabolism.

More Related