a patients blood test shows that her hemoglobin concentration is 16. g/dL. how many milligrams are in every 2.00mL of the patients blood?

320 mg

Explanation:

Concentration of hemoglobin = 16g / dL

1 g/dL = 10 mg/mL

16 g/dL = 16 * 10 mg/mL

= 160 mg/mL

For 1 mL the amount of hemoglobin present is 160 mg.

For 2 mL the amount of hemoglobin present is 160 * 2 mg / mL = 320 mg.