1. What is Water Density?

Water density is defined as mass per unit volume. At standard temperature and pressure (STP), pure water has a density of approximately 1 g/mL. This value can change with temperature and impurities.

2. How Does the Calculator Work?

The calculator uses the density formula:

Where:

• \( D \) — Density (g/mL)
• \( M \) — Mass (g)
• \( V \) — Volume (mL)

Explanation: For pure water at standard conditions, the density is exactly 1 g/mL, meaning 1 gram of water occupies 1 milliliter of volume.

3. Importance of Density Calculation

Details: Calculating water density is important in various scientific, industrial, and everyday applications including chemistry experiments, engineering calculations, and quality control in food and beverage industries.

4. Using the Calculator

Tips: Enter mass in grams and volume in milliliters. Both values must be positive numbers. The calculator will compute the density using the formula D = M/V.

5. Frequently Asked Questions (FAQ)

Q1: Does water density change with temperature?
A: Yes, water density decreases as temperature increases above 4°C. Water reaches its maximum density at 4°C.

Q2: Why is pure water density 1 g/mL?
A: The metric system was originally defined such that 1 gram of water at its temperature of maximum density (4°C) occupies exactly 1 cubic centimeter (1 mL).

Q3: How does salinity affect water density?
A: Adding salt or other dissolved substances increases water density. Seawater is denser than fresh water due to its salt content.

Q4: Can this calculator be used for other liquids?
A: While the formula D = M/V works for any substance, the default value of 1 g/mL is specific to pure water. Other liquids have different densities.

Q5: What are common applications of water density calculations?
A: Applications include buoyancy calculations, hydrological studies, chemical mixing, and determining concentration of solutions.