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How much heat in kilojoules is required to melt an ice cube with a mass of 18.6 g at 0 °C? The Lf for water is 333 J/g.

a)0.0559 kJ
b)55.9 kJ
c)6190 kJ
d)6.19 kJ

Respuesta :

Q = m.Lf.
Here, m = 18.6 g
Lf = 333 J/g 

Substitute their values, 
Q = 18.6 × 333 = 6193.8 J

We know, 1 KJ = 1000 J
So, 6193.8 J = 6.193 KJ

In short, Your Answer would be Option D

Hope this helps!