1. What is Water Density?

Water density is defined as the mass per unit volume of water. At standard temperature and pressure (STP), pure water has a density of approximately 1 g/cm³. This property is fundamental in many scientific and engineering applications.

2. How Does the Calculator Work?

The calculator uses the density formula:

Where:

• \( \rho \) — Density (g/cm³)
• \( m \) — Mass (g)
• \( V \) — Volume (cm³)

Explanation: The formula calculates how much mass is contained in a given volume of water, providing its density.

3. Importance of Density Calculation

Details: Water density is crucial in fluid dynamics, buoyancy calculations, chemical processes, and environmental studies. It varies with temperature and purity, making accurate measurement important.

4. Using the Calculator

Tips: Enter mass in grams and volume in cubic centimeters. Both values must be positive numbers. For pure water at 4°C, the density should be very close to 1 g/cm³.

5. Frequently Asked Questions (FAQ)

Q1: Why does water density change with temperature?
A: Water density is highest at 4°C (approximately 1 g/cm³) and decreases as temperature increases or decreases from this point due to molecular expansion.

Q2: What is the density of seawater compared to pure water?
A: Seawater is denser than pure water, typically around 1.025 g/cm³ due to dissolved salts and minerals.

Q3: How does pressure affect water density?
A: Water is nearly incompressible, so pressure has minimal effect on density compared to temperature changes.

Q4: Why is 4°C special for water density?
A: Water reaches its maximum density at 4°C, which is why ice floats and lakes freeze from the top down.

Q5: Can this calculator be used for other liquids?
A: While the formula works for any substance, this calculator is specifically calibrated for water. Other liquids have different density characteristics.