Answer:
0.1765 Kg / m3
Explanation:
Mass of cholesterol = 39mg
Volume = 221mL
The concentration is given as; Mass/ Volume
Concentration = 39 / 221 = 0.1765 mg /mL
The relationship between mg / mL and Kg / m3 is;
1 mg / mL = 1 Kg / m3
This means that;
0.1765 mg /mL = 0.1765 Kg / m3
