Final answer:
The conversion between mg/mL to g/L involves knowing that 1,000 mg equals 1 g and 1,000 mL equals 1 L. After the conversion, 4.591 mg/mL is equivalent to 4.591 g/L, making the answer option A.
Step-by-step explanation:
The question asks to convert a concentration from milligrams per milliliter to grams per liter. To convert milligrams (mg) to grams (g), we need to be aware that 1,000 mg equals 1 g. Just as well, converting milliliters (mL) to liters (L) involves the fact that 1,000 mL equals 1 L.
To convert 4.591 mg/mL to g/L, we first convert milligrams to grams (divide by 1,000), and then convert milliliters to liters (also divide by 1,000). However, since we are converting both mg to g and mL to L, these two conversions effectively cancel each other out, so the number remains the same but the units change from mg/mL to g/L.
Therefore, 4.591 mg/mL equals to 4.591 g/L. The correct answer is option A.4.591.