Question

Calculate the heat energy required to raise the temperature of an iron block from 15°C to 265°C. Mass of block is 20kg and specific heat capacity of iron is 450J/kg°C.

Answer 1

Hey.

Here is the answer.

As, Q = m C ∆T

here , m = 20kg , C =450J/kg℃ and

∆T = (265-15)℃ = 250 ℃

So, heat required = 20×450×250 J

Hence, the heat energy required to raise the temperature of an iron block from 15°C to 265°C is 2250000 J or 2250 kJ.

Thanks.