Question

A solid of mass 1.2 kg has sp. heat capacity of 1.4 Jg⁻¹°C⁻¹. Calculate its heat capacity in SI units.

Answer 1

Convert the mass to grams:

m = 1.2 kg = 1200 g

Using C' = mc

= 1200 × 1.4

= 1680 J °C⁻¹

Because a change of 1°C equals a change of 1 K, the heat capacity in SI units is 1680 J K⁻¹.