Answer :

Final answer:

The mass of oxygen per decilitre of blood is significantly increased by the presence of hemoglobin, which can bind oxygen molecules and transport them throughout the body.

Explanation:

The mass of oxygen per decilitre of human blood is dependent on the presence of hemoglobin, which increases the concentration of oxygen carried in the blood. Without hemoglobin, the concentration of dissolved O₂ in blood serum at 37°C is only 0.010 mM.

However, with hemoglobin present in normal blood concentration of about 2.2 mM, and its ability to bind four O₂ molecules, the total dissolved O₂ concentration is raised to approximately 8.8 mM. This is significantly higher than the concentration without the oxygen-binding properties of hemoglobin. To find the mass of oxygen per decilitre, one must consider the decilitre as 0.1 liters and use this O₂ concentration along with the molar mass of oxygen to calculate the mass.

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Rewritten by : Barada