Jeff's body contains about 4.97 l of blood that has a density of 1060 kg/m. approximately 45,0% (by mass) of the blood is cells and the rest is plasma the density of blood cells is approximately 1 125 kg/m, and about l % of the cells are white blood cells, the rest being red blood cells. the red blood cells are about 7.50 pum across (modeled as spheres). what is the mass of the blood mblood in jeffs body? mblood- kg approximately how many blood cells (of both types) n are in jeff's blood?