1. What is the Heat Equation?

The heat equation (Q = m × c × ΔT) calculates the amount of heat energy transferred when a substance changes temperature. It's fundamental in thermodynamics and heat transfer calculations.

2. How Does the Calculator Work?

The calculator uses the heat equation:

Where:

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

Explanation: The equation shows that heat transfer is proportional to mass, specific heat capacity, and temperature difference.

3. Importance of Heat Calculation

Details: Accurate heat calculations are crucial for designing heating/cooling systems, understanding chemical reactions, and many engineering applications.

4. Using the Calculator

Tips: Enter mass in kg, specific heat capacity in J/kg·K, and temperature change in K. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is specific heat capacity?
A: It's the amount of heat required to raise the temperature of 1 kg of a substance by 1 K. Different materials have different values.

Q2: Can I use Celsius instead of Kelvin?
A: For temperature differences (ΔT), the numerical value is the same in Celsius and Kelvin, but the equation technically requires Kelvin.

Q3: What are typical specific heat values?
A: Water: ~4186 J/kg·K, Aluminum: ~900 J/kg·K, Iron: ~450 J/kg·K, Air: ~1000 J/kg·K.

Q4: When is this equation not applicable?
A: During phase changes (melting/boiling) or when there are chemical reactions occurring.

Q5: How does this relate to calorimetry?
A: Calorimetry uses this principle to measure heat transfer in chemical reactions or physical changes.