Which set of equipment would be most useful to determine the density of a liquid?

• A. A funnel and filter paper
• B. A thermometer and a beaker
• C. A burette and a hot plate
• D. A graduated cylinder and a balance

Answer: (D)

Verified step by step guidance

1. Understand that density is defined as mass per unit volume, expressed mathematically as \(\text{density} = \frac{\text{mass}}{\text{volume}}\).
2. To determine the density of a liquid, you need to measure two quantities: the mass of the liquid and the volume of the liquid.
3. A balance (or scale) is used to measure the mass of the liquid accurately.
4. A graduated cylinder is used to measure the volume of the liquid precisely.
5. Therefore, the most useful set of equipment to determine the density of a liquid is a graduated cylinder (for volume) and a balance (for mass).