In an introductory blood lab, if a “vial” is defined as containing 10 mL of whole blood, approximately how many vials are equivalent to 1 U.S. pint of blood (about 473 mL)?

Step 3: To find how many vials are equivalent to 1 U.S. pint, set up a division of the total volume by the volume per vial: \(\text{Number of vials} = \frac{\text{Volume of 1 pint}}{\text{Volume per vial}}\).

Step 4: Substitute the known values into the formula: \(\text{Number of vials} = \frac{473\ \text{mL}}{10\ \text{mL per vial}}\).