What is the approximate density of water at 20 °C?

• A. 1.00 g/cm^3
• B. 0.92 g/cm^3
• C. 0.80 g/cm^3
• D. 1.20 g/cm^3

Answer: (A)

Verified step by step guidance

1. Recall that the density of a substance is defined as its mass divided by its volume, expressed as \(\text{density} = \frac{\text{mass}}{\text{volume}}\).
2. Understand that the density of water varies slightly with temperature, but at 20 °C, it is very close to 1 gram per cubic centimeter (\(\text{g/cm}^3\)).
3. Recognize that this value is a standard reference point often used in chemistry and physics for water at room temperature.
4. Compare the given options to the known approximate density of water at 20 °C, which is about 1.00 g/cm\(^3\).
5. Conclude that the correct approximate density of water at 20 °C is 1.00 g/cm\(^3\) based on standard reference data.