1. 0.1 mL of a protein solution of concentration of 16 mg/mL was
diluted to a total volume of 4.0 mL with water (i.e. 0.1 mL of the
solution was added to 3.9 mL of water). 3 mL of this solution was
then mixed with 27 mL of water. What is the concentration of the
diluted protein solution?
0.04 mg/mL
0.4 mg/mL
0.04 ug/mL
0.8 mg/mL