How many milliliters are in one liter?

• A. 100
• B. 10,000
• C. 100,000
• D. 1,000

Answer: (D)

Verified step by step guidance

1. Understand the relationship between liters and milliliters: 1 liter (L) is a unit of volume in the metric system, and milliliters (mL) are a smaller unit of volume within the same system.
2. Recall the metric prefixes: 'milli-' means one-thousandth (1/1000) of the base unit. Therefore, 1 milliliter is 1/1000 of a liter.
3. Set up the conversion factor: Since 1 mL = 0.001 L, to find how many milliliters are in 1 liter, you divide 1 liter by 0.001 L/mL.
4. Perform the division conceptually: \(\frac{1\ \text{L}}{0.001\ \text{L/mL}} = 1000\ \text{mL}\), meaning there are 1000 milliliters in one liter.
5. Conclude that the correct answer is 1000 milliliters in one liter, which matches the given correct answer.