Question

what quantity does the measurement 37 mmol represent?
○ speed
○ volume
○ amount
○ density

Explanation:

• Speed: Measured in units like m/s, km/h, etc., not mmol. So speed is incorrect.
• Volume: Measured in units like L, mL, m³, etc., not mmol. So volume is incorrect.
• Amount (of substance): The unit "mmol" (millimole) is used to measure the amount of a substance (in the context of moles, where 1 mmol = \(10^{-3}\) mol). This matches.
• Density: Measured in units like g/cm³, kg/m³, etc., not mmol. So density is incorrect.

Answer:

C. amount