The volume of a single platinum atom is 1.12*10-23 cm3. what is the volume of a platinum atom in microliters?

Basically, this problem asks you to convert units of volume from cm³ to μL. Cubic centimeters is the cubic volume equivalent of milliliters or mL. According to the metric system for L, microliter is 10⁻⁶ of a liter, while milliliter is 10⁻³ of a liter. Therefore, the solution is written as

(1.12*10⁻²³ cm³) * (1 mL/1 cm³) * (10⁻³ L / 1 mL) * (1μL/10⁻⁶ L) = 1.12*10⁻²⁰ μL