Question

A bumer supplies heat energy at a constant rate of 434 Js-1 for 60 seconds when 10g of a solid
material melts at its melting point. From this information, find the latent heat of fusion of this
material
(a) 80 cal/g
(b) 540 cal/g
(c) 310 cal/g
(d) 620 calg​

Answer 1

Heat supplied by burner = Q = P x t = Heat used in melting