Question

Calcuate the amount of heat absorbed by 200 g of paraffin wax to melt completely at its melting point.

[Specific latent heat of fusion of paraffin wax = 146 Jg⁻¹]

Answer 1

Given: Mass = 200 g

Latent heat = 146 Jg⁻¹

Formula: Amount of heat absorbed (Q) = Mass × Latent heat

= 200 × 146

= 29200 J

= 29.2 kJ