1. What is Heat Lost by Water Calculator?

Definition: This calculator determines the amount of heat energy lost by water based on its mass, specific heat capacity, and temperature change.

Purpose: It helps in thermodynamics calculations for heating/cooling systems, chemistry experiments, and engineering applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Heat lost (Joules)
• \( m \) — Mass of water (kilograms)
• \( c \) — Specific heat capacity of water (J/kg·K)
• \( \Delta T \) — Temperature change (Kelvin)

Explanation: The formula calculates the thermal energy transferred when water changes temperature.

3. Importance of Heat Calculation

Details: Accurate heat calculations are essential for designing heating systems, understanding thermal processes, and energy efficiency planning.

4. Using the Calculator

Tips: Enter the water mass in kg, specific heat capacity (default 4186 J/kg·K for water), and temperature change in Kelvin. Temperature decrease should be entered as negative values.

5. Frequently Asked Questions (FAQ)

Q1: What's the specific heat capacity of water?
A: Pure water has c = 4186 J/kg·K, but this varies slightly with temperature and impurities.

Q2: Can I use this for temperature increases?
A: Yes, enter positive ΔT values for heat gained (negative Q will indicate heat lost).

Q3: Why use Kelvin instead of Celsius?
A: Kelvin is used because it represents absolute temperature differences required for heat calculations.

Q4: How do I convert Celsius to Kelvin?
A: Temperature differences are the same in Celsius and Kelvin (Δ1°C = Δ1K).

Q5: Can this calculate heat for other substances?
A: Yes, just change the specific heat capacity value to match your substance.