An hour after a meal,a patient's blood glucose level is 150 mg/dL.Express this glucose level as mass/mass percent concentration.(Assume the density of blood is 1.0g/mL. )

Question

Quizplus · Accepted Answer

To express the glucose level as mass/mass percent concentration, we need to find the mass of glucose in 100g of blood. We can use the density of blood to convert 100mL of blood to 100g of blood.

Since the blood glucose level is given in mg/dL, we need to convert it to mg/mL. 
Blood glucose level = 150 mg/dL 
Since 1dL = 100mL, 
Blood glucose level = 150 mg/dL x (1 dL/100 mL) = 1.5 mg/mL

Now we need to find the mass of glucose in 100g of blood. 
Mass of glucose in 100g of blood = 1.5 mg/mL x 100g = 150 mg

Therefore, the mass/mass percent concentration of glucose in the blood is:
Mass of glucose in 100g of blood = 150 mg 
Mass of solution (100g of blood) = 100000 mg 
Mass/mass percent concentration = (150/100000) x 100% = 0.15%

Therefore, the best choice is C) 0.15%.

An Hour After a Meal,a Patient's Blood Glucose Level Is