Question

How much heat energy is gained when 5 kg of water
at 20°C is brought to its boiling point (Specific heat
of water = 42Jkg 1c-)​

Answer 1

Answer:

heat energy gained = mcT+mL

=5(42.1*(100-20)+2260*1000)

=5(42*80+2260000)

=5*2263360

=11316.8kJ