Question

The amount of heat needed for 2 kg of ice at -5 celcius if it is heated until all ice melts is ....
(c ice = 2.100 J/kg celcius L=336.000j/kg)

Answer 1

Q= m × L Q= 2 × 336.000 Q= 672.000 Are the temperature of ice just -5°C?

Answer 2

Q = m.c.T + m.L
= 2 kg. 2100. 5 + 2.336000
= 21000 + 672000
= 693000 J