Calculate the number of moles of oxygen that will dissolve in 45 L of water at 20°C if the partial pressure of oxygen is 0.21 atm. Henry's constant for oxygen is 0.0013 mol/ L•atm
1. 0.00027 mol
2. 0.0013 mol
3. 0.012 mol
4. 0.0062 mol
5. 0.28 mol
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