Various metals are essential for human health. One such example is iron. Insufficient amounts of iron can lead to anemia, causing loss of the heme proteins in red blood cells, such as hemoglobin and myoglobin, which are important for oxygen transport in the blood. A gram of hemoglobin contains 2.15 mg of iron. A 35 year old male patient arrived at the hospital and his blood volume was determined to be 4.9 mL.
What is the density of this patient’s hemoglobin in their blood in units of g/mL?