Question

calculate the required heat energy to change 10gram of ice at 0C into water vapour at 100C​

Answer 1

mass=10g(m)

temp diff = 100-0=100(t)

Specific heat capacity of water( c )=4.2 j per kg kelvin

Q(heat energy)=mxcxt

4.2x100x10=4.2x1000=4200J

The heat energy required = 4200 J