Seawater has 5.65 x 10^-3 g of dissolved oxygen in one kilogram of water. Concentration of O2 in parts per million is
Correct answer: A. 5.65
- A. 5.65
- B. 7.69
- C. 5.20
- D. 4.11
Explanation
A is correct since the solution is given asGiven: Water = 103 g(1 kg), Oxygen = 5.65 x 10-3 gRequired : Oxygen in ppm = ?Formula : Ppm = value in gram / amount of water ( solvent ) x 106Ppm = 5.65 x 10-3 / 103 x 106 = 5.65ppmB, C and D are incorrect because these are not correct values in ppm
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About Concentration Units
Concentration units express the amount of solute in a given amount of solution or solvent. Calculations cover molarity, molality, normality, mole fraction, mass percentage, volume percentage, parts per million and dilution, including the effect of temperature on volume-based units and the distinction between molarity and molality.
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