Question

What is the amount of heat required to raise the temperature of 5 kg of iron from 30°C to 130°C? Specific heat capacity of iron = 483 Jkg^-1C^-1.

Answer 1

Mass of iron m = 5kg
Initial temperature t₁ = 30°C
Final temperature t₂ = 130°C
Rise is temperature Δt = (t₂ -t₁) = 130 – 30 = 100°C
Specific heat capacity of iron c = 483Jkg^-1°C^-1
Q = m × c × Δt
= 5 × 483 × 100
= 2,41,500J