food and nutrition

O2 Water

Question: Fish generally need an O2 concentration in water of at least 4 mg/L for survival. What partial pressure of oxy? What partial pressure of oxygen above the water (in atmospheres at 0 C ) is needed to obtain this concentration? The solubility of O2 in water at 0 C and 1 atm partial pressure is . 2.21 x 10^-3 mol/L

Answer: 2e-3 mol dissolved O2/ L = 1 atm O2 gas (we'll use this as a conversion factor in a moment) (4 mg / L) / (16 g / mol) = 0.25 mmol O2 / L (0.25 mmol O2 / L) (1 atm O2 gas / 2e-3 mol O2/ L) = 0.125 atm O2 gas m


Related News and Products

Fox News

Russians troops fighting in Ukraine? Naw. Just on ?vacation.?
Washington Post
 

New York Daily News

'Cops' Crew Member with Ties to Mass. Killed on the Job
Boston.com
 

New York Daily News

Sister of Boston Marathon bombing suspects accused of threatening to 'put ...
New York Daily News
 

SFGate

Gun tourism grows in popularity in recent years
San Jose Mercury News
 

BBC News

Bryan Singer accuser drops sexual abuse case
BBC News
 

Indian Express

Gaza Truce Leaves No Clear Winner After 50-Day Conflict
Bloomberg
 

Daily Mail

Rotherham child abuse scandal officials still continue to pass the buck
Daily Mail
 

New York Times

Tony didn't get whacked in finale: 'Sopranos' creator
New York Post