Energy lost to condense = 803.4 kJ
Further explanation
Condensation of steam through 2 stages:
1. phase change(steam to water)
2. cool down(100 to 0 C)
1. phase change(condensation)
Lv==latent heat of vaporization for water=2260 J/g
[tex]\tt Q=300\times 2260=678000~J[/tex]
2. cool down
c=specific heat for water=4.18 J/g C
[tex]\tt Q=300\times 4.18\times (100-0)=125400[/tex]
Total heat =
[tex]\tt 678000+125400=803400~J[/tex]
