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# At 25 *C and 0% salinity the amount of oxygen in the ocean is 5.77 mL/L. What is the molarity of oxygen in the ocean at these conditions?

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- hcbiochemLv 74 months agoFavourite answer
Assuming 1 atm pressure, use the ideal gas law to calculate moles of O2 in 5.77 mL:

PV = n RT

1 atm (0.00577 L) = n (0.08206 Latm/molK) (298 K)

n = 2.36X10^-4 mol O2

So, the molarity of O2 is 2.36X10^-4 mol/L

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